ABB ACS255 IP66 User Manual

ABB Micro drives  
User’s manual  
ACS255 drives (0.5…10 hp) (115V-480V Variants)  
3
ACS255 drives  
0.5…10 hp  
User’s manual  
3AXD10000528266 Rev B  
EN  
EFFECTIVE: 2017-06-29  
© 2016 ABB Oy. All Rights Reserved.  
4
5
1. Table of Contents  
 
6
7
ACS255 IP20 (115V)  
EASY START-UP GUIDE  
AC SupplyVoltage  
(50/60Hz)  
Supply Voltage :  
L1 L2 L3  
-
-
-
115 Volts  
1 Phase  
Earth  
L
N
Check the drive rating information on page 46  
Fuses, Cable Sizes :  
Fuses  
-
-
-
Fuse Rating recommendation values given on page 46  
Cable size recommendation values given on page 46  
Always follow local and national codes of practice  
Keypad operation can be found in sections 7 and 8  
Control Terminals :  
Based on the default, out of box settings –  
-
-
-
Connect a Start/Stop switch between terminals 1& 2  
Close the switch to start  
Open the switch to stop  
-
To vary the speed from minimum (0Hz) to maximum  
(60Hz) Connect a 10kΩ potentiometer to terminals 5,6  
& 7.  
1
2
5
6
7
10kΩ  
Speed Pot  
Stop - Run  
Motor Cable Sizes  
Cable size recommendation values given on page 46  
-
Motor Connections  
-
Check for Star or Delta connection according to the  
motor voltage rating (See page 22)  
M
Motor Nameplate Details  
-
-
-
Enter the motor rated voltage in parameter 9905  
Enter the motor rated current in parameter 9906  
Enter the motor rated frequency in parameter 9907  
 
8
ACS255 IP66 (115-480V Switched Variants)  
EASY START-UP GUIDE  
Local Speed Potentiometer  
The local speed potentiometer will adjust  
the output frequency from minimum  
(Parameter 2007, default setting = 0Hz) to  
maximum (Parameter 2008, default  
setting = 60Hz)  
Mechanical Mounting  
-
Information can be  
found on page 17  
Run Reverse / Off / Run Forward Switch  
With the factory parameter settings, this  
switch allows the drive to be started in  
the forward and reverse operating  
directions. Alternative switch functions  
can be programmed, such as  
Keypad operation can be  
found in section 7 and 8  
Local/Remote, hand / Off/ Auto, see page  
Local Power  
disconnect with lock  
out provision  
Motor Cable Sizes  
-
Cable size  
recommendation values  
given on page 46  
Fuses, Cable Sizes :  
-
-
-
Fuse Rating recommendation values given on page 46  
Cable size recommendation values given on page 46  
Always follow local and national codes of practice.  
Fuses  
Supply Voltage :  
Motor Connections  
Check for Star or Delta connection  
-
-
-
115, 230, 400, 480 Volts  
1 or 3 Phase  
Check the drive rating  
information on page 46  
-
according to the motor voltage rating  
(See page 22)  
Motor Nameplate Details  
-
-
-
Enter the motor rated voltage in  
parameter 9905  
Enter the motor rated current in  
parameter 9906  
Enter the motor rated frequency in  
parameter 9907  
 
9
ACS255 IP66 (115-480V Non-Switched Variants)  
EASY START-UP GUIDE  
Mechanical Mounting  
-
Information can be found  
on page 17  
Keypad operation can be  
found in sections 7 and 8  
Motor Cable Sizes  
Fuses, Cable Sizes :  
-
Cable size  
recommendation values  
given on page 46  
-
-
-
Fuse Rating recommendation values given on page 46  
Cable size recommendation values given on page 46  
Always follow local and national codes of practice  
Fuses  
Motor Connections  
Check for Star or Delta connection  
Supply Voltage :  
-
-
-
-
115, 230, 400, 480 Volts  
1 or 3 Phase  
Check the drive rating  
information on page 46  
according to the motor voltage  
rating (See page 22)  
Motor Nameplate Details  
-
-
-
Enter the motor rated voltage in  
parameter 9905  
Enter the motor rated current in  
parameter 9906  
Enter the motor rated frequency in  
parameter 9907  
 
Declaration of Conformity  
The manufacturer hereby states that the ACS255 product range conforms to the relevant safety provisions of the following council directives:  
2014/30/EU (EMC) and 2014/35/EU (LVD)  
2011/65/EU (RoHS)  
EN 61800-5-1: 2007  
Adjustable speed electrical power drive systems. Safety requirements. Electrical, thermal and energy.  
Adjustable speed electrical power drive systems. EMC requirements and specific test methods  
EN 61800-3 2nd Ed: 2004  
/ A1:2012  
EN 55011: 2007  
Limits and Methods of measurement of radio disturbance characteristics of industrial, scientific and  
medical (ISM) radio-frequency equipment (EMC)  
EN60529 : 1992  
Specifications for degrees of protection provided by enclosures  
Electromagnetic Compatibility  
All drives are designed with high standards of EMC in mind.  
It is the responsibility of the installer to ensure that the equipment or system into which the product is incorporated complies with the EMC  
legislation of the country of use. Within the European Union, equipment into which this product is incorporated must comply with the EMC  
Directive 2004/108/EC. When using an ACS255 with an external filter, compliance with the following EMC Categories, as defined by EN61800-  
3:2004 can be achieved:  
Drive Type / Rating  
EMC Category  
First Environment Category C1  
First Environment Category C2  
Second Environment Category C3  
ACS255-_ _U…  
Use External EMC Filter  
Use External EMC Filter  
Use External EMC Filter  
Compliance with EMC standards is dependent on a number of factors including the environment in which the drive is installed,  
motor switching frequency, motor, cable lengths and installation methods adopted.  
Note  
For shielded motor cable lengths greater than 100m and up to 200m, an output dv/dt filter must be used (please refer to  
http://www.abb.com/ProductGuide for further details)  
All rights reserved. No part of this User Guide may be reproduced or transmitted in any form or by any means, electrical or mechanical  
including photocopying, recording or by any information storage or retrieval system without permission in writing from the publisher.  
ABB Drives Ltd © 2016  
The manufacturer accepts no liability for any damage caused during or resulting from transport, receipt of delivery, installation or  
commissioning. The manufacturer also accepts no liability for damage or consequences resulting from inappropriate, negligent or incorrect  
installation, incorrect adjustment of the operating parameters of the drive, incorrect matching of the drive to the motor, incorrect installation,  
unacceptable dust, moisture, corrosive substances, excessive vibration or ambient temperatures outside of the design specification.  
The contents of this User Guide are believed to be correct at the time of printing. In the interest of a commitment to a policy of continuous  
improvement, the manufacturer reserves the right to change the specification of the product or its performance or the contents of the User  
Guide without notice.  
This User Guide is for use with version 2.0x Software.  
User Guide Revision B  
This user guide is the “original instructions” document. All non-English versions are translations of the “original instructions”.  
The manufacturer adopts a policy of continuous improvement and whilst every effort has been made to provide accurate and up to date  
information, the information contained in this User Guide should be used for guidance purposes only and does not form the part of any  
contract.  
11  
2. Safety  
2.1. What this chapter contains  
This chapter contains the safety instructions which you must follow when installing, operating and servicing the drive. If  
ignored, physical injury or death may follow, or damage may occur to the drive, motor or driven equipment. Read the  
safety instructions before you work on the unit.  
2.2. Use of warnings  
Warnings caution you about conditions which can result in serious injury or death and/or damage to the equipment and  
advice on how to avoid the danger. The following warning symbols are used in this manual:  
Electricity warning warns of hazards from electricity which can cause physical injury and/or damage to  
the equipment.  
General warning warns about conditions, other than those caused by electricity, which can result in  
physical injury and/or damage to the equipment.  
2.3. Safety in installation and maintenance  
These warnings are intended for all who work on the drive, motor cable or motor.  
Electricity safety  
WARNING! Ignoring the instructions can cause physical injury or death, or damage to the equipment.  
Only qualified electricians are allowed to install and maintain the drive!  
Never work on the drive, motor cable or motor when input power is applied. After disconnecting the input power, always  
wait for 10 minutes to let the intermediate circuit capacitors discharge before you start working on the drive, motor or  
motor cable.  
Always ensure by measuring with a multimeter (impedance at least 1 Mohm) that:  
1. There is no voltage between the drive input phases L1, L2 and L3 and the ground.  
2. There is no voltage between terminals + and BR and the ground.  
Do not work on the control cables when power is applied to the drive or to the external control circuits. Externally supplied  
control circuits may carry dangerous voltage even when the input power of the drive is switched off.  
Do not make any insulation or voltage withstand tests on the drive.  
Be sure the system is properly grounded before applying power. Do not apply AC power before you ensure that all  
grounding instructions have been followed. Electrical shock can cause serious or fatal injury.  
Note:  
Even when the motor is stopped, dangerous voltage is present at the power circuit terminals L1, L2, L3 and U, V, W and + and BR.  
       
12  
General safety  
WARNING! Ignoring the following instructions can cause physical injury or death, or damage to the equipment.  
The drive is not field repairable. Never attempt to repair a malfunctioning drive; contact your local ABB representative or  
Authorized Service Centre for replacement.  
Make sure that dust from drilling does not enter the drive during the installation. Electrically conductive dust inside the drive  
may cause damage or lead to malfunction.  
Ensure sufficient cooling.  
2.4. Safety in start-up and operation  
These warnings are intended for all who plan the operation, start up or operate the drive.  
WARNING! Ignoring the following instructions can cause physical injury or death, or damage to the equipment.  
Before adjusting the drive and putting it into service, make sure that the motor and all driven equipment are suitable for  
operation throughout the speed range provided by the drive. The drive can be adjusted to operate the motor at speeds  
above and below the speed provided by connecting the motor directly to the power line.  
Do not activate automatic fault reset functions if dangerous situations can occur. When activated, these functions reset the  
drive and resume operation after a fault.  
Do not control the motor with an AC contactor or disconnecting device (disconnecting means); use instead the control  
panel start and stop keys and or external commands (I/O). The maximum allowed number of charging cycles of the DC  
capacitors (that is, power-ups by applying power) is two per minute.  
Note:  
When parameter 1103 PRIMARY COMMAND SOURCE MODE is not set to 1 or 2, the stop key on the control panel will not  
stop the drive. To stop the drive open terminal 2 of the drive control terminals.  
 
13  
Danger: Indicates a risk of electric shock, which, if not  
avoided, could result in damage to the equipment and  
possible injury or death.  
Danger: Indicates a potentially hazardous situation  
other than electrical, which if not avoided, could result  
in damage to property.  
The ACS255 variable speed drive is intended for professional installation and commissioning into complete equipment or systems  
as part of a fixed installation. If installed incorrectly it may present a safety hazard. The ACS255 uses high voltages and currents,  
carries a high level of stored electrical energy, and is used to control mechanical plant that may cause injury. Close attention is  
required to system design and electrical installation to avoid hazards in either normal operation or in the event of equipment  
malfunction. Only qualified electricians are allowed to install and maintain this product.  
System design, installation, commissioning and maintenance must be carried out only by personnel who have the necessary  
training and experience. They must carefully read this safety information and the instructions in this Guide and follow all  
information regarding transport, storage, installation and use of the ACS255, including the specified environmental limitations.  
Do not perform any flash test or voltage withstand test on the ACS255. Any electrical measurements required should be carried out  
with the ACS255 disconnected.  
Electric shock hazard! Disconnect and ISOLATE the ACS255 before attempting any work on it. High voltages are present at the  
terminals and within the drive for up to 10 minutes after disconnection of the electrical supply. Always ensure by using a suitable  
multimeter that no voltage is present on any drive power terminals prior to commencing any work.  
Where supply to the drive is through a plug and socket connector, do not disconnect until 10 minutes have elapsed after turning off  
the supply.  
Ensure correct grounding connections. The ground cable must be sufficient to carry the maximum supply fault current which  
normally will be limited by the fuses. Suitably rated fuses should be fitted in the mains supply to the drive, according to any local  
legislation or codes.  
Do not carry out any work on the drive control cables when power is applied to the drive or to the external control circuits.  
Within the European Union, all machinery in which this product is used must comply with the Machinery Directive 2006/42/EC,  
Safety of Machinery. In particular, the machine manufacturer is responsible for providing a main switch and ensuring the electrical  
equipment complies with EN60204-1.  
The level of integrity offered by the ACS255 control input functions for example stop/start, forward/reverse and maximum speed  
is not sufficient for use in safety-critical applications without independent channels of protection. All applications where  
malfunction could cause injury or loss of life must be subject to a risk assessment and further protection provided where needed.  
The driven motor can start at power up if the enable input signal is present.  
The STOP function does not remove potentially lethal high voltages. ISOLATE the drive and wait 10 minutes before starting any  
work on it. Never carry out any work on the Drive, Motor or Motor cable when the input power is still applied.  
The ACS255 can be programmed to operate the driven motor at speeds above or below the speed achieved when connecting the  
motor directly to the mains supply. Obtain confirmation from the manufacturers of the motor and the driven machine about  
suitability for operation over the intended speed range prior to machine start up.  
Do not activate the automatic fault reset function on any systems whereby this may cause a potentially dangerous situation.  
The ACS255 has an Ingress Protection rating of IP20 or IP66 depending on the model. IP20 units must be installed in a suitable  
enclosure.  
ACS255s are intended for indoor use only.  
When mounting the drive, ensure that sufficient cooling is provided. Do not carry out drilling operations with the drive in place,  
dust and metal shavings from drilling may lead to damage.  
The entry of conductive or flammable foreign bodies should be prevented. Flammable material should not be placed close to the  
drive  
Relative humidity must be less than 95% (non-condensing).  
Ensure that the supply voltage, frequency and number of phases correspond to the rating of the ACS255 as delivered.  
Never connect the mains power supply to the Output terminals U, V, W.  
Do not install any type of automatic switchgear between the drive and the motor  
Wherever control cabling is close to power cabling, maintain a minimum separation of 4 in. (100 mm) and arrange crossings at 90  
degrees  
Ensure that all terminals are tightened to the appropriate torque setting  
Do not attempt to carry out any repair of the drive. In the case of suspected fault or malfunction, contact your local ABB  
representative for further assistance.  
14  
3. General Information and Ratings  
This chapter contains information about the ACS255 including how to identify the drive.  
3.1. Type designation key  
The type designation contains information on the specification and configuration of the drive. You find the type designation label attached to  
the drive. The first digits from the left express the basic configuration, for example ACS255-03U-05A8-4.  
The explanations of the type designation label selections are described below.  
ACS255-03 U-05A8-4+B063+F278+N828  
ACS255 product series  
1-phase/3 phase  
01 = 1-phase input  
03 = 3-phase input  
EMC Filter  
E = Filtered  
U = Non-Filtered  
Output Current Rating  
In format xxAy, where xx indicates the integer part and y the fractional part,  
For example, 05A8 means 5.8 A.  
Input Voltage Range  
1 = 110…115 V AC  
2 = 200…240 V AC  
4 = 380…480VAC  
IP66 Enclosure  
Input Switch Assembly  
(Speed potentiometer, run/stop and mains disconnect switch)  
Low ambient Temperature version (-20deg C)  
   
15  
3.2. Drive Model Numbers IP20  
Mechanical Dimensions and Mounting information are shown in section 4.  
Further Electrical Specifications are shown in section 12.2.  
Output  
Power  
(HP)  
Internal DB  
transistor  
Model Number  
Current  
(A)  
Input switch assembly  
Frame Size  
1-phase 110V…115V AC (+/-10%) - 3 Phase 230V Output  
ACS255-01U-02A3-1  
ACS255-01U-04A3-1  
ACS255-01U-05A8-1  
0.5  
1
1.5  
2.3  
4.3  
5.8  
No  
No  
No  
No  
No  
Yes  
E1  
E1  
E2  
3.3. Drive Model Numbers IP66  
Mechanical Dimensions and Mounting information are shown in section 4.  
Further Electrical Specifications are shown in section 12.2.  
Output  
Power  
(HP)  
Internal DB  
transistor  
Model Number  
Current  
(A)  
Input switch assembly  
Frame Size  
1-phase 110V…115V AC (+/-10%) - 3 Phase 230V Output  
ACS255-01U-02A3-1+B063  
ACS255-01U-02A3-1+B063+F278  
ACS255-01U-04A3-1+B063  
ACS255-01U-04A3-1+B063+F278  
ACS255-01U-05A8-1+B063  
ACS255-01U-05A8-1+B063+F278  
0.5  
0.5  
1
1
1.5  
1.5  
2.3  
2.3  
4.3  
4.3  
5.8  
5.8  
No  
Yes  
No  
Yes  
No  
No  
No  
No  
No  
Yes  
Yes  
E1  
E1  
E1  
E1  
E2  
E2  
Yes  
1-phase 200…240V AC (+/-10%) - 3 Phase Output  
ACS255-01U-02A3-2+B063  
ACS255-01U-02A3-2+B063+F278  
ACS255-01U-04A3-2+B063  
ACS255-01U-04A3-2+B063+F278  
ACS255-01U-06A1-2+B063  
ACS255-01U-06A1-2+B063+F278  
ACS255-01U-07A0-2+B063  
ACS255-01U-07A0-2+B063+F278  
ACS255-01U-07A0-2+B063+D150  
ACS255-01U-07A0-2+B063+F278+D150  
ACS255-01U-10A5-2+B063  
ACS255-01U-10A5-2+B063+F278  
ACS255-01U-15A3-2+B063  
0.5  
0.5  
1
2.3  
2.3  
4.3  
4.3  
6.1  
6.1  
7
7
7
7
No  
Yes  
No  
Yes  
No  
Yes  
No  
Yes  
No  
Yes  
No  
Yes  
No  
Yes  
No  
No  
No  
No  
No  
No  
No  
No  
Yes  
Yes  
Yes  
Yes  
Yes  
Yes  
E1  
E1  
E1  
E1  
E1  
E1  
E1  
E1  
E2  
E2  
E2  
E2  
E3  
E3  
1
1.5  
1.5  
2
2
2
2
3
3
5
10.5  
10.5  
15.3  
15.3  
ACS255-01U-15A3-2+B063+F278  
5
3-phase 200…240V AC (+/-10%) - 3 Phase Output  
ACS255-03U-02A3-2+B063  
ACS255-03U-02A3-2+B063+F278  
ACS255-03U-04A3-2+B063  
ACS255-03U-04A3-2+B063+F278  
ACS255-03U-06A1-2+B063  
ACS255-03U-06A1-2+B063+F278  
ACS255-03U-07A0-2+B063  
ACS255-03U-07A0-2+B063+F278  
ACS255-03U-10A5-2+B063  
ACS255-03U-10A5-2+B063+F278  
ACS255-03U-18A0-2+B063  
ACS255-03U-18A0-2+B063+F278  
0.5  
2.3  
2.3  
4.3  
4.3  
6.1  
6.1  
7
No  
Yes  
No  
Yes  
No  
Yes  
No  
Yes  
No  
Yes  
No  
Yes  
No  
No  
No  
No  
No  
No  
Yes  
Yes  
Yes  
Yes  
Yes  
Yes  
E1  
E1  
E1  
E1  
E1  
E1  
E2  
E2  
E2  
E2  
E3  
E3  
0.5  
1.0  
1.0  
1.5  
1.5  
2
2
3
3
5
7
10.5  
10.5  
18  
5
18  
3-phase 380…480V AC (+/-10%) - 3 Phase Output  
ACS255-03U-01A2-4+B063  
ACS255-03U-01A2-4+B063+F278  
ACS255-03U-02A2-4+B063  
ACS255-03U-02A2-4+B063+F278  
ACS255-03U-03A3-4+B063  
ACS255-03U-03A3-4+B063+F278  
ACS255-03U-04A1-4+B063  
ACS255-03U-04A1-4+B063+F278  
ACS255-03U-04A1-4+B063+D150  
ACS255-03U-04A1-4+B063+F278+D150  
ACS255-03U-05A8-4+B063  
ACS255-03U-05A8-4+B063+F278  
ACS255-03U-09A5-4+B063  
ACS255-03U-09A5-4+B063+F278  
ACS255-03U-14A0-4+B063  
ACS255-03U-14A0-4+B063+F278  
ACS255-03U-18A0-4+B063  
0.5  
0.5  
1
1.2  
1.2  
2.2  
2.2  
3.3  
3.3  
4.1  
4.1  
4.1  
4.1  
5.8  
5.8  
9.5  
9.5  
14  
No  
Yes  
No  
Yes  
No  
Yes  
No  
Yes  
No  
Yes  
No  
Yes  
No  
Yes  
No  
Yes  
No  
Yes  
No  
No  
No  
No  
No  
No  
No  
No  
Yes  
Yes  
Yes  
Yes  
Yes  
Yes  
Yes  
Yes  
Yes  
Yes  
E1  
E1  
E1  
E1  
E1  
E1  
E1  
E1  
E2  
E2  
E2  
E2  
E2  
E2  
E3  
E3  
E3  
E3  
1
1.5  
1.5  
2
2
2
2
3
3
5
5
7.5  
7.5  
10  
10  
14  
18  
18  
ACS255-03U-18A0-4+B063+F278  
   
16  
4. Mechanical Installation  
4.1. General  
Carefully Unpack the ACS255 and check for any signs of damage. Notify the shipper immediately if any exist.  
Check the drive rating label to ensure it is of the correct type and power requirements for the application.  
Store the ACS255 in its box until required. Storage should be clean and dry and within the temperature range 40°C to +60°C  
The ACS255 should be mounted in a vertical position only on a flat, flame resistant vibration free mounting using the integral holes.  
The ACS255 must be installed in a pollution degree 1 or 2 environment only.  
Do not mount flammable material close to the ACS255  
Ensure that the minimum cooling air gaps, as detailed in sections 4.3 and 4.5 are left clear  
Ensure that the ambient temperature range does not exceed the permissible limits for the ACS255 given on page 46.  
Provide suitable clean, moisture and contaminant free cooling air sufficient to fulfil the cooling requirements of the ACS255  
according to sections 4.3 and 12.1.  
4.2. Mechanical Dimensions and Mounting IP20 Open Units  
I
J
A
D
B
C
H
G
H
F
E
Weight  
Drive  
Frame  
Size  
1
A
B
C
D
E
F
G
H
I
J
mm  
in  
mm  
in  
mm  
in  
mm  
in  
mm  
in  
mm  
in  
mm  
in  
mm  
in  
mm  
in  
mm  
in  
Kg  
Ib  
173 6.81 160 6.30 109 4.29 162 6.38  
221 8.70 207 8.15 137 5.39 209 8.23 5.3 0.21 150 5.91 109 4.29  
5
0.20 123 4.84  
82  
3.23  
50  
63  
1.97 5.5 0.22  
2.48 5.5 0.22  
10  
10  
0.39 1.0 2.20  
0.39 1.7 3.75  
2
Maximum Control Terminal Torque Settings of 0.5 Nm (4.5 lb-in)  
Maximum Power Terminal Torque Settings of 1 Nm (9 lb-in)  
NOTE  
4.3. Guidelines for Enclosure Mounting IP20 Units  
Installation should be in a suitable enclosure, according to EN60529 or other relevant local codes or standards.  
Enclosures should be made from a thermally conductive material.  
Where vented enclosures are used, there should be free space clearance above and below the drive to ensure good air circulation –  
see the diagram below for minimum free space clearance. Air should be drawn in below the drive and expelled above the drive.  
In any environments where the conditions require it, the enclosure must be designed to protect the ACS255 against ingress of  
airborne dust, corrosive gases or liquids, conductive contaminants (such as condensation, carbon dust, and metallic particles) and  
sprays or splashing water from all directions.  
High moisture, salt or chemical content environments should use a suitably sealed (non-vented) enclosure.  
The enclosure design and layout should ensure that the adequate ventilation paths and clearances are left to allow air to circulate through the  
drive heatsink. ABB Drives recommend the following minimum mounting clearance requirements for drives mounted in non-ventilated  
metallic enclosures:-  
Drive  
Size  
X
Y
Z
X
Above &  
Below  
Either  
Side  
Z
Between  
mm  
in  
mm  
in  
mm  
33  
46  
in  
50  
75  
1.97  
2.95  
50  
50  
1.97  
1.97  
1.30  
1.81  
1
2
Note :  
Y
Y
Dimension Z assumes that the drives are mounted side-by-side with  
no clearance.  
Typical drive heat losses are 3% of operating load conditions.  
Above are guidelines only and the operating ambient temperature of  
the drive MUST be maintained at all times.  
X
       
17  
4.4. Mechanical Dimensions IP66 (Nema 4X) Enclosed Units  
D
B
A
I
J
E
H
G
F
Drive  
Frame  
Size  
A
B
D
E
F
G
H
I
J
Weight  
mm  
in  
mm  
in  
mm  
in  
mm  
in  
mm  
in  
mm  
in  
mm  
in  
mm  
in  
mm  
in  
kg  
Ib  
2.95 6.50  
4.20 9.26  
232.0 9.13 207.0 8.15 189.0 7.44 25.0 0.98 179.0 7.05 161.0 6.34 148.5 5.85 4.0 0.16 8.0 0.31  
257.0 10.12 220.0 8.67 200.0 7.87 28.5 1.12 186.5 7.34 188.0 7.40 176.0 6.93 4.2 0.17 8.5 0.33  
310.0 12.2 276.5 10.89 251.5 9.90 33.4 1.31 252 9.92 210.5 8.29 197.5 7.78 4.2 0.17 8.5 0.33  
The size 3 product has 4 symmetrical mounting points  
1
2
3
7.7  
17  
NOTE  
Maximum Control Terminal Torque Settings of 0.5 Nm (4.5 lb-in)  
Maximum Power Terminal Torque Settings of 1 Nm (9 lb-in)  
4.5. Guidelines for Mounting Enclosed Units  
Before mounting the drive, ensure that the chosen location meets the  
environmental condition requirements for the drive shown in section 12.1  
The drive must be mounted vertically, on a suitable flat surface  
The minimum mounting clearances as shown in the table below must be  
observed  
X
X
The mounting site and chosen mountings should be sufficient to support  
the weight of the drives  
The Enclosed ACS255s can be installed side-by-side with their heatsink  
flanges touching. This gives adequate ventilation space between drives.  
If the ACS255 is to be installed above another drive or any other heat-  
producing device, the minimum vertical spacing (X) is 150mm (5.9 inches)  
above and below.  
   
18  
4.6. Gland Plate and Lock Out  
The use of a suitable gland system is required to maintain the appropriate IP / Nema rating. The gland plate has pre moulded cable entry holes  
for power and motor connections suitable for use with glands as shown in the following table. Where additional holes are required, these can  
be drilled to suitable size. Please take care when drilling to avoid leaving any particles within the product.  
Cable Gland recommended Hole Sizes & types:  
Moulded Hole Size  
0.866in (22mm)  
1.11in (28.2mm)  
Drill Size  
UL Gland Size  
PG13.5  
PG21  
UL Gland Size  
Metric Gland Size  
M20  
Frame Size 1  
Frame Size 2 & 3  
M25  
Metric  
Flexible Conduit Hole Size  
Frame Size 1  
Frame Size 2 & 3  
1.125in (28mm)  
1.375in (35mm)  
¾ in  
1 in  
21  
27  
UL rated ingress protection ("Type " ) is only met when cables are installed using a UL recognized bushing or fitting for a flexible-  
conduit system which meets the required level of protection ("Type")  
For conduit installations the conduit entry holes require standard opening to the required sizes specified per the NEC.  
Not intended for rigid conduit system  
Local Power Isolator Lock out  
On the switched models the Local Power Isolator switch can be locked in the ‘Off’ position using a 20mm standard shackle padlock (not  
supplied).  
IP66 / Nema 12 Unit Lock Out  
IP66 / Nema 4X Unit Lock Out  
4.7. Removing the Terminal Cover  
To access the connection terminals, the drive front cover needs to be removed as shown.  
IP66 / NEMA 4X Units  
Removing the 2 screws on the front of the product allows access to the connection terminals, as shown below.  
   
19  
5. Power Wiring  
5.1. Grounding the Drive  
This manual is intended as a guide for proper installation. ABB Drives Ltd cannot assume responsibility for the compliance or  
the non-compliance to any code, national, local or otherwise, for the proper installation of this drive or associated equipment.  
A hazard of personal injury and/or equipment damage exists if codes are ignored during installation.  
This ACS255 contains high voltage capacitors that take time to discharge after removal of the main supply. Before working on  
the drive, ensure isolation of the main supply from line inputs. Wait ten (10) minutes for the capacitors to discharge to safe  
voltage levels. Failure to observe this precaution could result in severe bodily injury or loss of life.  
Only qualified electrical personnel familiar with the construction and operation of this equipment and the hazards involved  
should install, adjust, operate, or service this equipment. Read and understand this manual and other applicable manuals in  
their entirety before proceeding. Failure to observe this precaution could result in severe bodily injury or loss of life.  
5.1.1. Recommended installation for EMC compliance  
Metal Back-Panel  
Site Ground Bus-Bar bonded to Metal Back-Panel  
panel which is bonded to main power ground.  
RFI Filter  
Option  
Ensure Filter chassis is making metal-metal contact with  
Mounting panel.  
Avoid long parallel  
runs of motor cables  
with other cables  
X
Twisted-Pair shielded cables for analog control and motor  
feedback signals.  
=/>100mm  
Where control cables must cross power  
cables make sure they are arranged at an  
angle as near to 90 degrees as possible.  
Whenever possible use Shielded motor cables-  
maintaining shield as far as possible along the cable.  
360° bonding  
EMC cable gland  
(Best-Practice)  
(Shield to Motor  
Chassis)  
PE  
PE  
U V W  
U V W  
   
20  
5.1.2. Grounding Guidelines  
The ground terminal of each ACS255 should be individually connected DIRECTLY to the site ground bus bar (through the filter if installed).  
ACS255 ground connections should not loop from one drive to another, or to, or from any other equipment. Ground loop impedance must  
confirm to local industrial safety regulations. To meet UL regulations, UL approved ring crimp terminals should be used for all ground wiring  
connections.  
The drive Safety Ground must be connected to system ground. Ground impedance must conform to the requirements of national and local  
industrial safety regulations and/or electrical codes. The integrity of all ground connections should be checked periodically.  
5.1.3. Protective Earth Conductor  
The Cross sectional area of the PE Conductor must be at least equal to that of the incoming supply conductor.  
5.1.4. Safety Ground  
This is the safety ground for the drive that is required by code. One of these points must be connected to adjacent building steel (girder, joist),  
a floor ground rod, or bus bar. Grounding points must comply with national and local industrial safety regulations and/or electrical codes.  
The safety ground terminal provides a grounding point for the motor cable shield. The motor cable shield connected to this terminal (drive  
end) should also be connected to the motor frame (motor end). Use a shield terminating or EMI clamp to connect the shield to the safety  
ground terminal.  
5.1.5. Motor Ground  
The motor ground must be connected to one of the ground terminals on the drive.  
5.1.6. Ground Fault Monitoring  
As with all inverters, a leakage current to earth can exist. The ACS255 is designed to produce the minimum possible leakage current while  
complying with worldwide standards. The level of current is affected by motor cable length and type, the effective switching frequency, the  
earth connections used and the type of RFI filter installed. If a GFCI (Ground Fault Current interrupter) is to be used, the following conditions  
apply: -  
The device must be suitable for protecting equipment with a DC component in the leakage current  
Individual GFCI’s should be used for each ACS255  
The ACS255 product range has input supply voltage surge suppression components fitted to protect the drive from line voltage transients,  
typically originating from lightning strikes or switching of high power equipment on the same supply.  
5.2. Wiring Precautions  
Connect the ACS255 according to sections 5.3 and 5.4, ensuring that motor terminal box connections are correct. There are two connections in  
general: Star and Delta. It is essential to ensure that the motor is connected in accordance with the voltage at which it will be operated. For  
more information, refer to section 5.5.  
Type MC continuous corrugated aluminium armor cable with symmetrical grounds or shielded power cable is recommended for the motor  
cables if metallic conduit is not used.  
The power cables must be rated for 75˚C (167˚F).  
5.2.1. EMC Filters  
WARNING! EMC filters should not be used when there is a risk that the phase to earth voltage could exceed the phase to  
phase voltage, Typically IT (ungrounded) and corner-grounded TN systems, otherwise this may cause danger or damage to  
the EMC filter.  
 
21  
5.3. Connection Diagram  
5.3.1. IP66 (Nema 4X) Switched Units  
Power Connections  
Incoming Power Source  
External Fuse  
Optional Input Choke  
Optional Input Filter  
Internal Mains Disconnect  
Optional Brake Resistor  
Shielded Motor Cable  
Relay Output  
A
B
C
D
E
F
BR  
+DC  
G
I
Control Connections  
Internal Forward / Off /  
Reverse Switch  
J
K
Internal Speed Control Pot  
8
Analog Output  
0 10 Volts  
9
0 Volt  
10  
11  
Relay Output  
‘Drive READY’ = Closed  
5.3.2. IP20 & IP66 (Nema 4X) Non- Switched Units  
Power Connections  
Incoming Power Source  
External Mains Disconnect  
External Fuse  
Optional Input Choke  
Optional Input Filter  
Optional Brake Resistor  
Shielded Motor Cable  
Relay Output  
A
B
C
D
E
F
+DC  
BR  
G
I
Control Connections  
1
2
+ 24 Volt (100mA) User Output  
Digital Input 1  
Drive Run / Stop  
Digital Input 2  
Forward / Reverse  
Digital Input 3  
Analog / Preset Speed  
+ 10 Volt Output  
Analog Input 1  
0 10 Volt  
3
4
5
6
7
8
0 Volt  
Analog Output  
0 10 Volts  
9
0 Volt  
10  
11  
Relay Output  
‘Drive READY’ = Closed  
 
22  
5.4. Drive & Motor Connections  
For 1 phase supply, power should be connected to L1/L, L2/N. For 3 phase supplies power should be connected to L1, L2, L3. Phase sequence  
is not important. The Motor should be connected to U, V, W  
For drives that have a dynamic brake transistor an optional external braking resistor will need be connected to +DC and BR when required.  
The brake resistor circuit should be protected by a suitable thermal protection circuit. The “–DC, +and BRconnections are blanked off by  
plastic tabs when sent from the factory. The plastic tabs can be removed if/when required.  
Size 1 Connections  
IP20  
IP66 (Nema 4X)  
Size 2 & 3 Connections  
IP20  
IP66 (Nema 4X)  
5.5. Motor Terminal Box Connections  
Most general purpose motors are wound for operation on dual voltage supplies. This is indicated on the nameplate of the motor. This  
operational voltage is normally selected when installing the motor by selecting either STAR or DELTA connection. STAR always gives the higher  
of the two voltage ratings. Example Motor nameplate shown below (380V Delta illustrated):  
     
23  
5.6. Using the REV/Off/FWD Selector Switch (IP66 Switched Version Only)  
By adjusting the parameter settings the ACS255 can be configured for multiple applications and not just for Forward or Reverse.  
This could typically be for Hand/Off/Auto applications (also known as Local/Remote) for Industrial fan and pump industries.  
Parameters to Set  
Switch Position  
Notes  
1103  
9902  
Factory Default Configuration  
Run Forward or Reverse with speed  
controlled from the Local POT  
Run forward with speed controlled form the  
local POT  
Run Reverse - disabled  
Run Forward with speed controlled from the  
Local POT  
Run Reverse  
STOP  
STOP  
Run Forward  
Run Forward  
0
0
STOP  
STOP  
STOP  
STOP  
STOP  
STOP  
0
0
0
0
5
5
5,7  
1
Preset Speed 1  
Run Reverse  
Run in Auto  
Run Forward  
Run Forward  
Preset Speed 1 provides a ‘Jog’ Speed set in  
parameter 1202  
Run Forward or Reverse with speed  
controlled from the Local POT  
6, 8  
4
Run in Hand Speed controlled from the  
Local POT  
Run in Auto 0 Speed controlled using Analog  
input 2 e.g. from PLC with 4-20mA signal.  
In Speed Control the speed is controlled from  
the Local POT  
In PI Control, Local POT controls PI set point  
In Preset Speed Control, parameter 1202 sets  
the Preset Speed  
In PI Control, POT can control the PI set point  
(Parameter 4010=1)  
Run in Hand  
Run in Speed  
Control  
Run in PI Control  
Run in PI Control  
1
Run in Preset Speed  
Control  
0, 2, 4,5,  
8..12  
Hand speed controlled from the Local POT  
Auto Speed Reference from Modbus  
Run in Hand  
Run in Hand  
STOP  
STOP  
Run in Auto  
Run in Auto  
3
3
6
3
Hand Speed reference from Preset Speed 1  
(Parameter 1202)  
Auto Speed Reference from Modbus  
 
24  
6. Control Wiring  
6.1. Control Terminal Connections  
Default Connections  
Control Terminals  
Description  
1
2
+24V  
DI1  
+24V Output  
Digital Input 1  
Digital Input 2  
+24V, 100mA.  
Positive logic  
“Logic 1” input voltage range: 8V … 30V DC  
“Logic 0” input voltage range: 0V … 4V DC  
3
DI2  
Digital/Analog  
Input 3  
Digital: 8 to 30V  
Analog: 0 to 10V, 0 to 20mA or 4 to 20mA  
4
DI/AI 3  
+10V  
DI/AI4  
COM  
AO  
5
+10V Output  
+10V, 10mA, 1kΩ minimum  
Digital/Analog  
Input 4  
Analog: 0 to 10V, 0 to 20mA or 4 to 20mA  
Digital: 8 to 30V  
6
7
0V  
User ground connected to terminal 9  
Analog Output /  
Digital Output  
Analog: 0 to 10V, 20mA maximum  
Digital: 0 to 24V  
8
9
AGND  
ROC  
0V  
User ground connected to terminal 7  
10  
11  
Relay Common  
Relay Contact  
RNO  
Contact 255Vac, 6A / 30Vdc, 5A  
6.2. RJ45 Data Connection  
1
2
3
4
5
6
7
8
No Connection  
No Connection  
0 Volts  
-RS485 (PC)  
+RS485 (PC)  
+24 Volt  
-RS485 (Modbus RTU)  
+RS485 (Modbus RTU)  
For MODBUS RTU register map information  
please refer to page 44  
When using MODBUS control the Analog and  
Digital Inputs can be configured as shown in  
section 9.1.3  
Warning:  
This is not an Ethernet  
connection. Do not connect  
directly to an Ethernet port.  
     
25  
7. Operation  
7.1. Managing the Keypad  
The drive is configured and its operation monitored via the keypad and display.  
Used to display real-time information, to access and exit  
parameter edit mode and to store parameter changes.  
NAVIGATE  
(press for >1 second to toggle between status and  
parameter mode)  
Used to increase speed in real-time mode or to increase  
parameter values in parameter edit mode  
UP  
Used to decrease speed in real-time mode or to decrease  
parameter values in parameter edit mode  
DOWN  
RESET /  
STOP  
Used to reset a tripped drive.  
When in Keypad mode is used to Stop a running drive.  
When in keypad mode, used to Start a stopped drive or to  
reverse the direction of rotation if bi-directional keypad  
mode is enabled  
START  
7.2. Changing Parameters  
“Status Mode”  
H StoPH  
PAr SH  
Press for >1sec to enter  
“Short/Long Parameter group  
selection mode”  
Timeout (60s)  
PAr SH  
Use to select Short “  
PAr LH  
,  
PAr AH  
Long “  
, Advanced “  
group parameters  
Timeout (60s)  
Press to exit “Short/Long Parameter group  
selection mode” and save selection  
“Parameter mode”  
(End number flashing)  
P9902H  
Short Press to exit “Parameter  
edit mode” and save selection  
Press for >1s to return  
to status mode  
Use to select parameter for editing  
P0000  
Press to enter  
parameter edit mode  
(“Parameter edit mode”)  
Use to change  
parameter value  
NOTE  
When attempting to edit a parameter the drive must be stopped (not running), if not “L” will be shown on the left side of the display.  
7.3. Resetting to Factory Default Settings  
To reset factory default parameters, press  
reset the drive.  
,
and  
for >2s. The display shows . Press the  
button to acknowledge and  
       
26  
8. Quick Start-up and Control  
8.1. Quick Start-up Terminal Control  
When delivered, the drive is in the factory default state, meaning that it is set to operate in terminal control mode (Parameter 9902  
DIGITAL INPUTS FUNCTION SELECT = 0 and 1103 PRIMARY COMMAND SOURCE MODE = 0) and all parameters have the default values as  
indicated in section 10.  
1. Perform Mechanical and Electrical installation as per section 4 and 5.  
2. Connect a control switch between the control terminals 1 and 2 ensuring that the contact is open (drive disabled).  
3. Connect a potentiometer (1kΩ min to 10 kΩ max) between terminals 5 and 7, and the wiper to terminal 6.  
4. With the potentiometer set to zero, switch on the supply to the drive. The display will show .  
5. Press and hold the navigate key for >1s to enter parameter view mode and enter motor data from motor nameplate into parameter  
9905 MOTOR RATED VOLTAGE, 9906 MOTOR RATED CURRENT, and parameter 9907 MOTOR RATED FREQUENCY. Enter the rated  
RPM (nameplate) of the motor in 9908 MOTOR RATED SPEED to allow the display of the estimated motor speed.  
6. Close the control switch, terminals 1-2. The drive is now ‘enabled’ and the output frequency/speed are controlled by the  
potentiometer. The display shows zero speed in Hz (.) with the potentiometer turned to minimum. If the display is not  
showing Hz, change it using the  
(Navigate) key.  
7. Turn the potentiometer to maximum. The motor will accelerate to 60Hz (the default value of parameter 2008 MAXIMUM  
FREQUENCY / SPEED LIMIT) under the control of the accelerating ramp time parameter 2202 ACCELERATION RAMP TIME. The  
display shows 60Hz (.) at max speed.  
8. To display motor current (A), briefly press the  
9. To display estimated motor speed (RPM), briefly press the  
(Motor nameplate speed (RPM) must be entered in 9908 Motor Rated Speed to display the estimated RPM).  
10. To display power (Hp) briefly press the (Navigate) key a third time.  
11. Press again to return to speed (Hz) display.  
(Navigate) key.  
(Navigate) key a second time.  
To stop the motor, either turn the potentiometer back to zero or disable the drive by opening the control switch (terminals 1-2).  
If the enable/disable switch is opened the drive will decelerate to stop at which time the display will show . If the potentiometer is  
turned to zero with the enable/disable closed the display will show .(0.0Hz), if left like this for 60 seconds the drive will go into  
standby mode, display shows , waiting for a speed reference signal.  
   
27  
8.2. Quick Start-up Keypad Control  
To allow the ACS255 to be controlled from the keypad in a forward direction only, set parameter 1103 PRIMARY COMMAND SOURCE  
MODE =1:  
1. Perform Mechanical and Electrical installation as per section 4 and 5.  
2. Connect a control switch between the control terminals 1 and 2 ensuring that the contact is open (drive disabled).  
3. Switch on the supply to the drive, Press and hold the navigate key for > 1 to enter parameter view mode and set parameter 1103  
Primary Command Source Mode = 1  
4. Enable the drive by closing the switch between control terminals 1 & 2. The display will show .  
5. Press the  
6. Press  
key. The display shows .. If the display is not showing Hz, change it using the  
(Navigate) key.  
to increase speed.  
7. The drive will run forward, increasing speed until  
is released.  
The rate of acceleration is controlled by the setting of parameter 2202 ACCELERATION RAMP TIME, check this before starting.  
8. Press  
2203 DECELERATION RAMP TIME.  
9. Press the key. The drive will decelerate to rest at the rate set in parameter 2203 DECELERATION RAMP TIME.  
10. The display will finally show  at which point the drive is disabled  
11. To preset a target speed prior to enable, press the key while the drive is stopped. The display will show the target speed, use the  
key to return the display to .  
key will start the drive accelerating to the target speed.  
to decrease speed. The drive will decrease speed until  
is released. The rate of deceleration is limited by the setting in  
&
keys to adjust as required then press the  
12. Pressing the  
To allow the ACS255 to be controlled from the keypad in a forward and reverse direction, set parameter 1103 PRIMARY COMMAND  
SOURCE MODE =2:  
13. Operation is the same as when parameter 1103 PRIMARY COMMAND SOURCE MODE =1 for start, stop and changing speed.  
14. Press the  
15. Press  
key. The display changes to ..  
to increase speed  
16. The drive will run forward, increasing speed until  
is released. Acceleration is limited by the setting in parameter 2202  
ACCELERATION RAMP TIME. The maximum speed is the speed set in parameter 2008 MAXIMUM FREQUENCY / SPEED LIMIT.  
17. To reverse the direction of rotation of the motor, press the  
key again.  
8.3. Drive Operating Displays.  
Drive mains power applied, but no Enable or Run signal applied  
Drive running, display shows output frequency (Hz)  
Drive running, display shows motor current (Amps)  
Drive Running, display shows motor power (kW)  
  
Whilst the drive is running, the following displays  
can be selected by briefly pressing the  
button on the drive. Each press of the button will  
cycle the display through to the next selection.  
..  
..  
..  
If the enable/disable switch isopened the drive will decelerate to stop at whichtimethe display will show  If the  
potentiometer is turned to zero with the enable/disable closed the display will show .. (0.0Hz), if left like this for 60  
seconds the drive will go into standbymode,displayshows ,waiting foraspeedreferencesignal.  
.
  
 
28  
9. Application Macros  
9.1.  
Overview of macros  
Application macros are pre-programmed parameter sets. While starting up the drive, the user selects the macro best suited for the  
purpose with parameter 9902 DIGITAL INPUTS FUNCTION SELECT and 1103 PRIMARY COMMAND SOURCE MODE.  
1103 (control Mode)  
0 : Terminal Mode  
Selected Speed Reference  
Analog input 1  
1 : Keypad Mode (uni-directional)  
2 : Keypad Mode (bi-directional)  
4 : Fieldbus Control  
Digital Potentiometer  
Digital Potentiometer  
Speed reference via Fieldbus  
PI controller output  
5 : User PI mode  
9.1.1. Terminal Mode 1103 PRIMARY COMMAND SOURCE MODE = 0.  
9902  
Digital input 1 (T2)  
Open: Stop (disable)  
Closed: Run (enable)  
Open: Stop (disable)  
Closed: Run (enable)  
Digital input 2 (T3)  
Digital input 3 (T4)  
Analog input (T6)  
Comments  
Open : Forward run  
Closed : Reverse run  
Open: Analog speed ref  
Closed : Preset speed 1/2  
Open : Analog speed ref  
Closed : Preset speed 1  
Open: Preset speed 1  
Closed : Preset speed 2  
0
Analog input 1 reference  
1
2
Analog input 1 reference  
Digital Input 2  
Digital Input 3  
Preset Speed  
4 Preset speeds selectable.  
Analog input used as digital  
input Closed status: 8V <  
Vin < 30V  
Open: Preset speeds 1-4  
Closed : Max Speed  
(parameter 2008)  
Open  
Closed  
Open  
Open  
Open  
Closed  
Closed  
Preset Speed 1  
Preset Speed 2  
Preset Speed 3  
Preset Speed 4  
External trip input :  
Open: Trip,  
Open: Stop (disable)  
Closed: Run (enable)  
Closed  
Connect external motor  
thermistor PTC type or  
similar to digital input 3  
Switches between analog  
inputs 1 and 2  
Closing digital inputs 1 and  
2 together carries out a  
fast stop (Parameter 2206)  
Connect external motor  
thermistor PTC type or  
similar to digital input 3  
Open: Stop (disable)  
Closed: Run (enable)  
Open : Analog speed ref  
Closed : Preset speed 1  
3
4
5
Analog input 1 reference  
Closed: Run  
Open: Stop (disable)  
Closed: Run (enable)  
Open : Analog input 1  
Closed : Analog input 2  
Analog input 2 reference Analog input 1 reference  
Open: Fwd Stop  
Closed: Fwd Run  
Open: Reverse Stop  
Closed: Reverse Run  
Open : Analog speed ref  
Analog input 1 reference  
Closed : Preset speed 1  
External trip input :  
Open: Trip,  
Closed: Run  
External trip input :  
Open: Trip,  
Closed: Run  
Open: Stop (disable)  
Closed: Run (enable)  
Open : Forward  
Closed : Reverse  
6
7
Analog input 1 reference  
Analog input 1 reference  
Closing digital inputs 1 and  
2 together carries out a  
fast stop (Parameter 2206)  
Open: Stop (disable)  
Closed: Fwd Run (enable)  
Open: Stop (disable)  
Closed: Rev Run (enable)  
Digital Input 3  
Open  
Closed  
Open  
Closed  
Analog Input 1  
Open  
Open  
Closed  
Closed  
Preset Speed  
Preset Speed 1  
Preset Speed 2  
Preset Speed 3  
Preset Speed 4  
Open: Stop (disable)  
Closed: Run (enable)  
Open : Forward  
Closed : Reverse  
8
9
Digital Input 3  
Open  
Closed  
Open  
Closed  
Analog Input 1  
Open  
Open  
Closed  
Closed  
Preset Speed  
Preset Speed 1  
Preset Speed 2  
Preset Speed 3  
Preset Speed 4  
Closing digital inputs 1 and  
2 together carries out a  
fast stop (Parameter  
2206)  
Open: Stop (disable)  
Closed: Forward Run  
(enable)  
Open: Stop (disable)  
Closed: Reverse Run  
(enable)  
Normally Open (NO)  
Momentary close to run  
Normally Closed (NC)  
Momentary open to stop  
Open : Analog speed ref  
Closed: Preset speed 1  
10  
11  
Analog input 1 reference  
Analog input 1 reference  
Analog input 1 reference  
Closing digital inputs 1 and  
3 together carries out a  
fast stop (Parameter 2206)  
Normally Open (NO)  
Momentary close to run  
Normally Closed (NC)  
Momentary open to stop  
Normally Open (NO)  
Momentary close to rev  
Open: Stop (disable)  
Closed: Run (enable)  
Open: Fast Stop (disable)  
Closed: Run (enable)  
Open : Analog speed ref  
Closed : Preset speed 1  
12  
NOTE  
Negative Preset Speeds will be inverted if Run Reverse selected  
9902=0 9902 = 1  
9902=2  
+24 Volt  
+24 Volt  
+24 Volt  
Run (Enable)  
For / Rev  
Run (Enable)  
Analog / Preset  
Preset1 / Preset2  
+ 10 Volts  
Run (Enable)  
Preset Speeds 1 4  
Select  
Analog / Preset  
+ 10 Volts  
Reference  
0 Volts  
Reference  
Preset / Max  
0 Volts  
Analog speed input with 1 preset speed and  
fwd/rev switch  
Analog speed input with 2 preset speeds  
4 preset speeds and max speed select switch.  
Effectively giving 5 preset speeds  
   
29  
9902=3  
9902=4  
9902=11  
+24 Volt  
+24 Volt  
+24 Volt  
Run (Enable)  
Analog / Preset 1  
External Trip  
+ 10 Volts  
Run (Enable)  
Run Forward  
Stop  
Local / Remote  
(Hand / Auto)  
Remote (Auto)  
Reference  
Run Reverse  
+ 10 Volts  
Reference  
+ 10 Volts  
Local (Hand)  
Reference  
Reference  
0 Volts  
0 Volts  
0 Volts  
Analog speed input with 1 preset speed and  
motor thermistor trip  
Local or remote analog speeds  
(2 analog inputs)  
Push button fwd/rev/stop with fast stop using  
2nd deceleration ramp  
9.1.2. Keypad Mode 1103 PRIMARY COMMAND SOURCE MODE = 1 or 2.  
9902 Digital input 1 (T2)  
Digital input 2 (T3)  
Digital input 3 (T4)  
Analog input (T6)  
Comments  
0, 1,  
5,  
8..12  
Open: Stop (disable)  
Closed: Run (enable)  
Closed : remote UP push-  
button  
Closed : remote DOWN  
push-button  
Open : Forward  
+24V : Reverse  
Open: Stop (disable)  
Closed: Run (enable)  
Closed : remote UP push-  
button  
Closed : remote DOWN  
push-button  
Open : Keypad speed ref  
+24V : Preset speed 1  
2
Connect external motor  
thermistor PTC type or similar  
to digital input 3  
Open: Stop (disable)  
Closed: Run (enable)  
Closed : remote UP push-  
button  
External trip input :  
Open: Trip, Closed: Run  
Closed : remote DOWN  
push-button  
3
Open: Stop (disable)  
Closed: Run (enable)  
Closed : remote UP push-  
button  
Open : Keypad speed ref  
Closed : Analog input 1  
4
Analog input 1  
Connect external motor  
thermistor PTC type or similar  
to digital input 3  
Open: Stop (disable)  
Closed: Run (enable)  
Open : Forward run  
Closed : Reverse run  
External trip input :  
Open: Trip, Closed: Run  
Open : Keypad speed ref  
+24V : Preset speed 1  
6
Closing digital inputs 1 and 2  
together carries out a fast  
stop (2206)  
Open: Forward Stop  
Closed: Forward Run  
Open: Reverse Stop  
Closed: Reverse Run  
External trip input :  
Open: Trip, Closed: Run  
Open : Keypad speed ref  
+24V : Preset speed 1  
7
9902=0  
+24 Volt  
Run (Enable)  
Increase Speed  
Reduce Speed  
+ 10 Volts  
Forward / Reverse  
0 Volts  
Remote push button speed control with  
fwd/rev  
By default if the enable signal is present the drive will not Enable until the START button is pressed. To automatically enable the drive when the  
enable signal is present set Parameter 1100 KEYPAD MODE RESTART FUNCTION = 2 or 3. This then disables the use of the START & STOP buttons  
NOTE  
9.1.3. Modbus Control Mode 1103 PRIMARY COMMAND SOURCE MODE = 4.  
9902 Digital input 1 (T2)  
Digital input 2 (T3)  
Digital input 3 (T4)  
Analog input (T6)  
Comments  
0..2,  
4..5,  
8..12  
Run and stop commands given via  
the RS485 link and Digital input 1  
must be closed for the drive to run.  
Connect external motor thermistor  
PTC type or similar to digital input 3  
Master Speed Ref - start and stop  
controlled via RS485. Keypad Speed  
Ref - drive auto runs if digital input 1  
closed, depending on Parameter  
1100 setting  
Open: Stop (disable)  
Closed: Run (enable)  
No effect  
No effect  
No effect  
Open: Stop (disable)  
Closed: Run (enable)  
Open: Stop (disable)  
Closed: Run (enable)  
Open : Master speed ref  
Closed : Preset speed 1  
Open : Master speed ref  
Closed : Analog input  
External trip input :  
Open: Trip, Closed: Run  
External trip input :  
Open: Trip, Closed: Run  
3
No effect  
6
Analog input reference  
Open: Stop (disable)  
Closed: Run (enable)  
Open : Master speed ref  
Closed : keypad speed ref Open: Trip, Closed: Run  
External trip input :  
7
No effect  
For further information on the MODBUS RTU Register Map information and communication setup please refer to section 11.  
 
30  
9.1.4. PI Mode 1103 PRIMARY COMMAND SOURCE MODE = 5.  
9902  
Digital input 1 (T2)  
Digital input 2 (T3)  
Digital input 3 (T4)  
Analog input (T6)  
Comments  
Analog Input 1 can provide an  
adjustable PI setpoint, by  
setting Parameter 4010 = 1  
Analog Input 1 can provide an  
adjustable PI setpoint, by  
setting Parameter 4010 = 1  
Connect external motor  
thermistor PTC type or similar  
to digital input 3  
0, 2, Open: Stop (disable)  
9..12 Closed: Run (enable)  
Open : PI control  
Closed : Preset speed 1  
PI feedback analog input  
Analog input 1  
Open: Stop (disable)  
Closed: Run (enable)  
Open : PI control  
Closed : Analog input 1  
1
PI feedback analog input  
Analog input 1  
Open: Stop (disable)  
3, 7  
Open : PI control  
Closed : Preset speed 1  
External trip input :  
Open: Trip, Closed: Run  
PI feedback analog input  
Closed: Run (enable)  
Normally Open (NO)  
Momentary close to run  
Normally Open (NO)  
Momentary close to run  
Normally Open (NO)  
Momentary close to run  
Normally Closed (NC)  
Momentary open to stop  
Normally Closed (NC)  
Momentary open to stop  
Normally Closed (NC)  
Momentary open to stop  
Normally Open (NO)  
Momentary close to run  
Normally Open (NO)  
Momentary close to run  
Normally Open (NO)  
Momentary close to run  
Analog Input 1 can provide an  
adjustable PI setpoint, by  
setting Parameter 4010 = 1  
4
PI Feedback Analog Input  
Analog Input 1  
Open: PI Control  
Closed: Preset Speed 1  
Open: External Trip  
Closed: Run  
5
PI Feedback Analog Input  
PI Feedback Analog Input  
6
Open: Stop (disable)  
Closed: Run (enable)  
Open : Forward run  
Closed : Reverse run  
8
PI feedback analog input  
Analog input 1  
PI Mode 1103=5, 9902=0  
PI Mode 1103=5, 9902=1  
PI Mode 1103=5, 9902=3  
+24 Volt  
+24 Volt  
+24 Volt  
Run (Enable)  
Run (Enable)  
PI / Local (Hand)  
PI Feedback  
+10 Volt  
Run (Enable)  
PI / Preset Speed 1  
PI / Preset Speed 1  
External Trip  
PI Feedback  
Local (Hand) Ref  
PI Feedback  
0 Volt  
0 Volt  
0 Volt  
Remote closed loop PI feedback control  
with Local Preset speed 1  
Remote closed loop PI feedback control with  
Local Analog speed input  
Remote closed loop PI feedback control with  
Local Preset speed 1 and motor thermistor  
trip  
NOTE  
By default the PI reference is set for a digital reference level set in Parameter 4011 PI DIGITAL REFERENCE (SETPOINT).  
When using an Analog reference set Parameter 4010 PI DIGITAL REFERENCE (SETPOINT)= 1 (analog) and connect reference signal to analog input  
1 (T6).  
The default settings for proportional gain (parameter 4001), integral gain (Parameter 4002) and feedback mode (Parameter 4005) are suitable for  
most fan and pump applications.  
The analog reference used for PI controller can also be used as the local speed reference when parameter 9902 DIGITAL INPUTS FUNCTION  
SELECT =1.  
31  
10. Parameters  
10.1. Parameter Structure  
The parameters within the drive are split into 3 groups, group 1 is titled “Short Parameter mode” displayed as “Par S” on the  
drive display, group 2 is titled “Long Parameter mode” displayed as “Par L” on the drive display and group 3 is titled  
“Advanced Parameter mode” displayed as “Par A”.  
“Par S” group brings together the most commonly used parameters to aid quick setup.  
“Par L” group includes all of the drive parameters (except those in “Par-A” group.  
“Par A” group includes the drives advanced functions.  
10.1.1. Group Navigation.  
“Status Mode”  
H StoPH  
PAr SH  
Press for >1sec to enter  
“Short/Long Parameter group  
selection mode”  
Timeout (60s)  
PAr SH  
Use to select Short “  
PAr LH  
,  
PAr AH  
Long “  
, Advanced “  
group parameters  
Press to exit “Short/Long Parameter group  
selection mode” and save selection  
“Parameter mode”  
(End number flashing)  
P9902H  
10.1.2. Parameter Structure table.  
PAr LH  
PAr AH  
PAr SH  
Parameter No.  
Parameter No.  
Parameter No.  
2017  
2105  
2106  
2301  
9902  
9905  
9906  
9907  
0401  
1103  
1202  
1203  
1204  
1301  
2008  
2102  
2202  
0000  
0401  
1100  
1103  
1202  
1203  
1204  
1205  
2605  
9903  
9910  
11201  
11203  
11206  
3400  
4001  
4002  
4005  
4010  
4011  
4016  
5302  
9902  
9905  
9906  
9907  
9908  
       
32  
10.2. Parameters in the Short parameter mode  
The following table describes the parameters that are visible in the Short parameter mode. See page 25 for how to select the  
parameter mode. All parameters are presented in detail in section 10.4.  
Parameters in the Short parameter mode  
No.  
Name/Value  
Description  
Def  
99 START-UP DATA  
Application macros.  
9902  
9905  
DIGITAL INPUTS  
FUNCTION SELECT  
MOTOR RATED VOLTAGE  
Defines the function of the digital inputs depending on the control mode setting in  
Parameter 1103 PRIMARY COMMAND SOURCE MODE. See Application macros on page 28.  
This parameter should be set to the rated (nameplate) voltage of the motor (Volts).  
1
Drive Rating  
Dependent  
110V/230V rated drives  
Voltage  
0…255V  
Note : The stress on the motor insulation is always dependent on the drive supply voltage.  
This also applies in the case where the motor voltage rating is lower than the rating of the  
drive and the supply of the drive.  
400V rated drives  
0…500V  
9906  
9907  
MOTOR RATED CURRENT  
This parameter should be set to the rated (nameplate) current of the motor.  
Drive Rating  
Dependent  
0.2*drive rated output  
current…1.0*drive rated  
output current  
MOTOR RATED  
FREQUENCY  
Current  
This parameter should be set to the rated (nameplate) frequency of the motor  
60Hz  
25…500Hz  
Frequency  
04 FAULT HISTORY  
Fault history (read only)  
0401  
TRIP HISTORY LOG  
Displays the last four fault codes for the drive. Refer to page 50 for further information.  
The drive can accept a variety of references in addition to the conventional analog input,  
potentiometer and keypad signals.  
-
11 REFERENCE SELECT  
1103  
PRIMARY COMMAND  
SOURCE MODE  
0: Terminal  
Control  
0: TERMINAL CONTROL.  
The drive responds directly to signals applied to the control terminals.  
1: UNI-DIRECTIONAL  
KEYPAD CONTROL  
2: BI-DIRECTIONAL  
KEYPAD CONTROL.  
3: MODBUS NETWORK  
CONTROL.  
The drive can be controlled in the forward direction only using an external or remote  
Keypad  
The drive can be controlled in the forward and reverse directions using an external or  
remote Keypad. Pressing the keypad START button toggles between forward and reverse.  
Control via Modbus RTU (RS485) using the internal accel / decel ramps  
4 : MODBUS NETWORK  
CONTROL.  
Control via Modbus RTU (RS485) interface with accel / decel ramps updated via Modbus  
5 : PI CONTROL  
User PI control with external feedback signal  
6 : PI ANALOG  
PI control with external feedback signal and summation with analog input 1  
SUMMATION CONTROL.  
12 CONSTANT SPEEDS  
Constant speeds. Constant speed activation overrides the external speed reference.  
Constant speed selections are ignored if the drive is in the local control mode.  
Refer to section 9.1 for how to make constant speed selections from the drive control  
terminals.  
Preset Speeds / Frequencies selected by digital inputs depending on the setting of  
Parameter 9902 DIGITAL INPUTS FUNCTION SELECT.  
If Parameter 9908 MOTOR RATED SPEED = 0, the values are entered as Hz. If Parameter  
9908 > 0, the values are entered as Rpm.  
Setting a negative value will reverse the direction of motor rotation.  
1202  
1203  
PRESET / JOG FREQUENCY Defines constant speed 1 (that is the drive output frequency)  
/ SPEED 1  
5.0Hz/RPM  
2007…-2008  
Output Frequency  
PRESET / JOG FREQUENCY Defines constant speed 2 (that is the drive output frequency)  
/ SPEED 2  
10.0Hz/RPM  
2007…-2008  
Output Frequency  
1204  
PRESET / JOG FREQUENCY Defines constant speed 3 (that is the drive output frequency)  
/ SPEED 3  
25.0Hz/RPM  
2007…-2008  
Output Frequency  
 
33  
Def  
Parameters in the Short parameter mode  
No.  
13 ANALOG INPUTS  
1301 ANALOG INPUT 1 OFFSET  
Name/Value  
Description  
Analog input signal offset  
Sets an offset, as a percentage of the full scale range of the input, which is applied to the  
analog input signal  
0.0%  
-500…500 %  
Value in percent of the full scale range of the input  
Example: If the analog input signal format is 0-10V, offset = 20% .  
An analog input signal level of 7 Volts gives the following result :-  
Analog input level (%) = 7/10 = 70%  
Result = 70-20 (%) = 50%  
20 LIMITS  
2008 MAXIMUM FREQUENCY /  
Maximum frequency  
Maximum output frequency or motor speed limit Hz or rpm.  
If parameter 9908 MOTOR RATED SPEED >0, the value entered / displayed is in Rpm  
Maximum frequency  
60.0 Hz  
SPEED LIMIT  
2007…500.0 Hz  
21 START/STOP  
Stop mode of the motor  
2102 STOP MODE  
Selects the motor stop function  
0 = Ramp  
to stop  
0 : RAMP TO STOP  
When the enable signal is removed, the drive will ramp to stop, with the rate controlled by  
parameter 2203 DECEL RAMP TIME as described above. In this mode, the drive brake  
transistor is disabled  
1 : COAST TO STOP  
When the enable signal is removed, the drive output is immediately disabled, and the motor  
will coast (freewheel) to stop. If the load can continue to rotate due to inertia, and the drive  
may possibly be re-enabled whilst the motor is still rotating, the spin start function  
(Parameter 2101 SPIN START ENABLE) should be enabled. In this mode, the drive brake  
transistor is disabled.  
2 : RAMP TO STOP  
3 : COAST TO STOP  
When the enable signal is removed, the drive will ramp to stop, with the rate controlled by  
Parameter 2203 DECEL RAMP TIME as described above. The ACS255 Brake chopper is also  
enabled in this mode.  
When the enable signal is removed, the drive output is immediately disabled, and the motor  
will coast (freewheel) to stop. If the load can continue to rotate due to inertia, and the drive  
may possibly be re-enabled whilst the motor is still rotating, the spin start function  
(Parameter 2101 SPIN START ENABLE) should be enabled. The drive brake chopper is enabled  
in this mode, however it will only activate when required during a change in the drive  
frequency setpoint, and will not activate when stopping.  
22 ACCEL/DECEL  
Acceleration and deceleration times  
2202 ACCELERATION RAMP  
TIME  
Acceleration ramp time from 0 to base speed (Parameter 9907 MOTOR RATED FREQUENCY)  
in seconds.  
Time  
5.0 s  
5.0 s  
0.00…600.0 s  
2203 DECELERATION RAMP  
TIME  
Deceleration ramp time from base speed (Parameter 9907 MOTOR RATED FREQUENCY) to  
standstill in seconds. When set to zero, fastest possible ramp time without trip is activated.  
0.00…600.0 s  
Time  
34  
10.3. Read Only Status parameters  
10.3.1. Read Only Status parameter access and navigation.  
The user must be in the Long Parameter group to gain access to the Read only status parameters, See section 10.1.1 for how to navigate to the  
Long Parameter group.  
In the Long Parameter Group when the user scrolls to parameter 0000, pressing  
required Read only status parameter (as listed in the table above). Pressing  
only status parameter.  
will display 0104”, the User can then scroll to the  
once more will then display the value of that particular Read  
For those parameters which have multiple values (e.g. software ID parameter 3301), pressing the  
and  
keys will display the different  
values within that parameter.  
Pressing  
returns to the next level up. If  
is then pressed again (without pressing  
or ), the display changes to the next level up  
(main parameter level, i.e. Parameter 0000”).  
The following table includes the descriptions of all Read Only status parameters.  
Actual signals  
No.  
Name/Value  
Description  
01 OPERATING DATA  
Basic signals for monitoring the drive (read-only).  
For selection of an actual signal to be displayed on the control panel, see parameter 3405 DISPLAY  
SCALING SOURCE.  
0102  
0104  
0107  
0109  
0110  
ROTOR SPEED (ESTIMATED)  
MOTOR CURRENT  
DC BUS VOLTAGE  
APPLIED MOTOR VOLTAGE  
INTERNAL HEATSINK  
TEMPERATURE  
In vector control mode, this parameter displays the estimated rotor speed of the motor.  
8 most recent values prior to trip, updated every 255ms  
Displays the instantaneous DC Bus Voltage internally within the drive in V DC. (0…1000V dc)  
Displays the instantaneous output voltage from the drive to the motor V AC. (0…600V AC)  
Temperature of heatsink in °C (-20 … 100 °C)  
0111  
0115  
0120  
0121  
0126  
0140  
0145  
0160  
0183  
0188  
SPEED REFERENCE INPUT  
Displayed in Hz if Parameter 9908 MOTOR RATED SPEED = 0, otherwise displayed in RPM. (-2008 …  
2008)  
Total number of kWh/MWh consumed by the drive.  
kWh/MWh METER  
ANALOG INPUT 1 APPLIED  
SIGNAL LEVEL  
ANALOG INPUT 2 APPLIED  
SIGNAL LEVEL  
Displays the signal level applied to analog input 1 (Terminal 6) in % after scaling and offsets have  
been applied.  
Displays the signal level applied to analog input 2 (Terminal 4) in % after scaling and offsets have  
been applied.  
Displays the output level of the PI Controller in %.  
PI CONTROLLER OUTPUT  
HOURS RUN METER  
Not affected by resetting factory default parameters.  
(0 to 99 999 hours)  
8 most recent values prior to trip, updated every 500ms.  
(-20 … 120 °C)  
Binary value.  
Displays the status of the drive inputs, starting with the left hand side digit = Digital Input 1 etc.  
Displays the level of ripple present on the DC Bus Voltage in VDC. This parameter is used by the drive  
for various internal protection and monitoring functions.  
Displays the amount of time in hours and minutes that the ACS255 has operated for during its  
lifetime with a heatsink temperature in excess of 85°C. This parameter is used by the ACS255 for  
various internal protection and monitoring functions. (HH:MM:SS)  
THERMISTOR TEMPERATURE  
LOG  
DIGITAL INPUT STATUS  
DC BUS VOLTAGE RIPPLE LEVEL  
OPERATING TIME  
ACCUMULATED WITH  
HEATSINK TEMPERATURE  
ABOVE 85°C  
0189  
0190  
OPERATING TIME  
Displays the amount of time in hours and minutes that the ACS255 has operated for during its  
ACCUMULATED WITH AMBIENT lifetime with an ambient temperature in excess of 80°C. This parameter is used by the ACS255 for  
TEMPERATURE ABOVE 80°C  
DRIVE INTERNAL COOLING FAN  
TOTAL OPERATING TIME  
various internal protection and monitoring functions. (HH:MM:SS)  
Displays the total operating time of the ACS255 internal cooling fans. The first value shown is the  
number of hours. Pressing the Up key will display the minutes and seconds. This is used for scheduled  
maintenance information (HH:MM:SS)  
0192  
0193  
0194  
DC BUS VOLTAGE RIPPLE LOG  
(22ms) (V DC)  
HEATSINK TEMPERATURE LOG  
(30s) (°C)  
AMBIENT TEMPERATURE LOG  
(30s) (°C)  
8 most recent values prior to trip, updated every 22ms.  
8 most recent values prior to trip, updated every 30s.  
8 most recent values prior to trip, updated every 30s.  
 
35  
04 FAULT HISTORY  
Fault history (read-only)  
0402  
0406  
0415  
RUN TIME SINCE LAST TRIP (1)  
Run-time clock stopped by drive disable (or trip), reset on next enable only if a trip occurred. Reset  
also on next enable after a drive power down. (0 to 99 999 hours)  
DC BUS VOLTAGE LOG  
8 most recent values prior to trip, updated every 255ms. (0 … 1000V)  
RUN TIME SINCE LAST TRIP (2)  
Run-time clock stopped by drive disable (or trip), reset on next enable only if a trip occurred (under-  
volts not considered a trip) not reset by power down / power up cycling unless a trip occurred  
prior to power down.( 0 to 99 999 hours)  
0416  
0417  
RUN TIME SINCE LAST DISABLE  
Run-time clock stopped on drive disable, value reset on next enable. (0 to 99 999 hours)  
DRIVE EFFECTIVE SWITCHING  
FREQUENCY  
Actual drive effective output switching frequency. This value maybe lower than the selected  
frequency in parameter 2606 EFFECTIVE SWITCHING FREQUENCY if the drive is too hot. The drive  
will automatically reduce the switching frequency to prevent an over temperature trip and maintain  
operation. (4 to 32 kHz)  
33 INFORMATION  
Firmware package version, serial number etc..  
3301  
SOFTWARE ID, IO & MOTOR  
CTRL  
e.g. “1.00”, “47AE”  
Version number and checksum.  
“1” on LH side indicates I/O processor,  
“2“ indicates motor control  
3303  
3304  
DRIVE SERIAL NUMBER  
DRIVE IDENTIFIER  
000000 … 999999  
00-000 … 99-999  
Unique drive serial number e.g. 540102 / 32 / 005  
Drive rating (Drive rating, drive type e.g. 0.37, 1 230,3P-out)  
36  
10.4. Parameters in the Long parameter mode  
The following table includes the complete descriptions of all parameters that are visible only in the Long parameter mode. See page 31  
for how to select the parameter mode.  
Parameters in the Long parameter mode  
Index Name/Selection  
0000 Read only parameters access  
Description  
Press the  
Def  
-
button when in this parameter to access the read only parameters as listed  
on page 34.  
04  
FAULT HISTORY  
Fault history (read-only)  
0401  
TRIP HISTORY LOG  
Displays the last four fault codes for the drive. Refer to page 50  
for further information. Press UP or DOWN to step through all four. The most recent trip is  
always displayed first. The Under Voltage (F0006) trip is only stored once.  
The drive can accept a variety of references in addition to the conventional analog input,  
potentiometer and keypad signals.  
-
11  
REFERENCE SELECT  
1100  
KEYPAD MODE RESTART  
FUNCTION  
This parameter is active only when operating in Keypad Control Mode (parameter 1103  
PRIMARY COMMAND SOURCE MODE = 1 or 2).  
1 :  
PREVIOUS  
SPEED,  
KEYPAD  
START  
0 MINIMUM SPEED,  
KEYPAD START  
1 : PREVIOUS SPEED,  
KEYPAD START  
Keypad Start and Stop keys are active, and control terminals 1 and 2 must be linked  
together.The drive will always start at the Minimum Frequency / Speed (parameter 2007 )  
Keypad Start and Stop keys are active, and control terminals 1 and 2 must be linked  
together.  
The drive will always start at the last operating Frequency / Speed  
Allows the drive to be started from the control terminals directly, and the keypad Start and  
Stop keys are ignored.  
2 : MINIMUM SPEED,  
TERMINAL ENABLE  
The drive will always start at the Minimum Frequency / Speed (parameter 2007)  
Allows the drive to be started from the control terminals directly, and the keypad Start and  
Stop keys are ignored. The drive will always start at the last operating Frequency / Speed.  
3 : PREVIOUS SPEED,  
TERMINAL ENABLE  
PRIMARY COMMAND  
SOURCE MODE  
1103  
0: Terminal  
Control  
0: TERMINAL CONTROL.  
1: UNI-DIRECTIONAL  
KEYPAD CONTROL  
2: BI-DIRECTIONAL  
KEYPAD CONTROL.  
3: MODBUS NETWORK  
CONTROL.  
The drive responds directly to signals applied to the control terminals.  
The drive can be controlled in the forward direction only using an external or remote  
Keypad  
The drive can be controlled in the forward and reverse directions using an external or  
remote Keypad. Pressing the keypad START button toggles between forward and reverse.  
Control via Modbus RTU (RS485) using the internal accel / decel ramps  
4 : MODBUS NETWORK  
CONTROL.  
Control via Modbus RTU (RS485) interface with accel / decel ramps updated via Modbus  
5 : PI CONTROL  
User PI control with external feedback signal  
6 : PI ANALOG  
PI control with external feedback signal and summation with analog input 1  
SUMMATION CONTROL.  
12  
CONSTANT SPEEDS  
Constant speeds. Constant speed activation overrides the external speed reference.  
Constant speed selections are ignored if the drive is in the local control mode.  
Refer to section 9.1 for how to make constant speed selections from the drive control  
terminals.  
Preset Speeds / Frequencies selected by digital inputs depending on the setting of  
Parameter 9902 DIGITAL INPUTS FUNCTION SELECT.  
If Parameter 9908 MOTOR RATED SPEED = 0, the values are entered as Hz. If Parameter  
9908 > 0, the values are entered as Rpm.  
Setting a negative value will reverse the direction of motor rotation.  
1202  
1203  
1204  
1205  
PRESET / JOG FREQUENCY  
/ SPEED 1  
2007…-2008  
PRESET / JOG FREQUENCY  
/ SPEED 2  
2007…-2008  
PRESET / JOG FREQUENCY  
/ SPEED 3  
2007…-2008  
PRESET / JOG FREQUENCY  
/ SPEED 4  
Defines constant speed 1 (that is the drive output frequency)  
0.0  
Hz/RPM  
Output Frequency  
Defines constant speed 2 (that is the drive output frequency)  
0.0  
Hz/RPM  
Output Frequency  
Defines constant speed 3 (that is the drive output frequency)  
0.0  
Hz/RPM  
Output Frequency  
Defines constant speed 4 (that is the drive output frequency)  
0.0  
Hz/RPM  
2007…-2008  
Output Frequency  
 
37  
Parameters in the Long parameter mode  
Index Name/Selection Description  
13 ANALOG INPUTS  
Def  
1300 ANALOG INPUT 1 SIGNAL  
Selects the type of reference source into terminal 6.  
  
FORMAT  
0 to 10 Volt Signal(Uni-polar).The drive will remain at 0.0Hz if the analog reference after  
scaling and offset are applied is <0.0%.  
  
0 to 10 Volt Signal (Bi-polar). The drive will operate the motor in the reverse direction of  
rotation if the analog reference after scaling and offset are applied is <0.0%  
0 to 20mA Signal  
  
  
  
4 to 20mA Signal, the ACS255 will trip and show the fault code  if the signal level falls  
below 3mA  
4 to 20mA Signal, the ACS255 will ramp to stop if the signal level falls below 3mA  
  
  
20 to 4mA Signal, the ACS255 will trip and show the fault code  if the signal level falls  
below 3mA  
20 to 4mA Signal, the ACS255 will ramp to stop if the signal level falls below 3mA  
  
1301 ANALOG INPUT 1 OFFSETSets an offset, as a percentage of the full scale range of the input, which is applied to the  
0.0%  
analog input signal  
-500…500 %  
Value in percent of the full scale range of the input  
Example: If the analog input signal format is 0-10V, offset = 20% .  
An analog input signal level of 7 Volts gives the following result :-  
Analog input level (%) = 7/10 = 70%  
Result = 70-20 (%) = 50%  
1302  
1304  
ANALOG INPUT 1 SCALING Scales the analog input by this factor, (as a percentage of the full scale range of this input).  
100.0  
0.0…2000.0 %  
Example: If parameter 1300 ANALOG INPUT 1 FORMAT is set for 0 10V, and the scaling  
factor is set to 200.0%, a 5 volt input will result in the drive running at maximum speed as set  
in parameter 2008 MAX SPEED LIMIT  
ANALOG INPUT 2 SIGNAL  
FORMAT  
Selects the type of reference source into terminal 4.  
  
0 to 10 Volt Signal  
0 to 20mA Signal  
  
  
  
4 to 20mA Signal, the ACS255 will trip and show the fault code  if the signal level falls  
below 3mA  
4 to 20mA Signal, the ACS255 will ramp to stop if the signal level falls below 3mA  
  
  
20 to 4mA Signal, the ACS255 will trip and show the fault code  if the signal level falls  
below 3mA  
20 to 4mA Signal, the ACS255 will ramp to stop if the signal level falls below 3mA  
  
14  
RELAY OUTPUTS  
Status information indicated through relay output and relay operating delays  
1401  
OUTPUT RELAY FUNCTION Selects the function assigned to the relay output. The relay has two output terminals, Logic 1  
1 : Drive  
READY  
SELECT  
indicates the relay is active, and therefore terminals 10 and 11 will be linked together.  
0 : DRIVE ENABLED  
(RUNNING)  
Logic 1 when the motor is enabled  
1 : DRIVE READY  
Logic 1 when power is applied to the drive and no fault exists  
2 : AT TARGET FREQUENCY Logic 1 when the output frequency matches the setpoint frequency  
(SPEED)  
3: DRIVE TRIPPED  
Logic 1 when the drive is in a fault condition  
4 : OUTPUT FREQUENCY  
>= LIMIT  
Logic 1 when the output frequency exceeds the adjustable limit set in 3200 RELAY  
THRESHOLD LEVEL  
5 : OUTPUT CURRENT >=  
LIMIT  
Logic 1 when the motor current exceeds the adjustable limit set in 3200 RELAY THRESHOLD  
LEVEL  
6 : OUTPUT FREQUENCY <  
LIMIT  
Logic 1 when the output frequency is below the adjustable limit set in 3200 RELAY  
THRESHOLD LEVEL  
7 : OUTPUT CURRENT <  
LIMIT  
Logic 1 when the motor current is below the adjustable limit set in 3200 RELAY THRESHOLD  
LEVEL  
38  
Parameters in the Long parameter mode  
Index Name/Selection  
Description  
Def  
15  
ANALOG/DIGITAL  
OUTPUTS  
Analog output signal processing  
1501  
ANALOG OUTPUT  
FUNCTION SELECT  
Selects the type of output signal information indicated from terminal 8.  
Note :  
When using settings 0 7 the output is a digital format (Logic 1 = 24V).  
When using settings 8-9 the output is an analog format.  
Logic 1 when the ACS255 is enabled (Running)  
8 : OUTPUT  
FREQUENCY  
(MOTOR  
SPEED).  
0 : DRIVE ENABLED  
(RUNNING).  
1 : DRIVE READY.  
Logic 1 When no Fault condition exists on the drive  
2 : AT TARGET FREQUENCY Logic 1 when the output frequency matches the setpoint frequency  
(SPEED).  
3: DRIVE TRIPPED.  
Logic 1 when the drive is in a fault condition  
4 : OUTPUT FREQUENCY  
>= LIMIT  
Logic 1 when the output frequency exceeds the adjustable limit set in parameter 3200  
RELAY THRESHOLD LEVEL  
5 : OUTPUT CURRENT >=  
LIMIT  
Logic 1 when the motor current exceeds the adjustable limit set in parameter 3200 RELAY  
THRESHOLD LEVEL  
6 : OUTPUT FREQUENCY <  
LIMIT  
Logic 1 when the output frequency is below the adjustable limit set in parameter 3200  
RELAY THRESHOLD LEVEL  
7 : OUTPUT CURRENT <  
LIMIT.  
Logic 1 when the motor current is below the adjustable limit set in parameter 3200 RELAY  
THRESHOLD LEVEL  
8 : OUTPUT FREQUENCY  
(MOTOR SPEED).  
9 : OUTPUT (MOTOR)  
CURRENT.  
0 to parameter 2008 MAXIMUM FREQUENCY / SPEED LIMIT  
0 to 200% of parameter 9906 MOTOR RATED CURRENT  
16  
SYSTEM CONTROLS  
Parameter lock etc.  
1602  
PARAMETER ACCESS  
UNLOCK  
0…65535  
If Parameter 1603 has had a value entered, then the matching value needs to be entered  
here in order to give read-write access to the parameters.  
See page 42 for more details  
0
0
1603  
PARAMETER ACCESS CODE To make all parameters Read only, enter a value in this parameter.  
DEFINITION  
0…65535  
See page 42 for more details  
20 LIMITS  
Drive operation limits  
2007  
2008  
2020  
MINIMUM FREQUENCY /  
SPEED LIMIT  
0.0 HZ…2008  
MAXIMUM FREQUENCY /  
SPEED LIMIT  
Minimum output frequency or motor speed limit Hz or rpm.  
If parameter 9908 MOTOR RATED SPEED >0, the value entered / displayed is in Rpm  
Minimum frequency  
Maximum output frequency or motor speed limit Hz or rpm.  
If parameter 9908 MOTOR RATED SPEED >0, the value entered / displayed is in Rpm  
Maximum frequency  
0.0 Hz  
60.0 Hz  
2007…500.0 Hz  
BRAKE CHOPPER ENABLE  
0 :  
DISABLED  
0 : DISABLED  
1 : ENABLED WITH  
Enables the internal brake chopper with software protection for a 200W continuous rated  
resistor  
Enables the internal brake chopper without software protection. An external thermal  
protection device should be fitted.  
SOFTWARE PROTECTION.  
2 : ENABLED WITHOUT  
SOFTWARE PROTECTION.  
21 START/STOP  
Start and Stop modes of the motor  
2101 FLYING START (Size E2 &  
Starting the drive connected to a rotating motor.  
0 : Disabled  
E3 ONLY) / DC INJECTION  
TIME ON START (Size E1  
ONLY)  
0 : DISABLED  
1 : ENABLED.  
When enabled, on start up the drive will attempt to determine if the motor is already  
rotating, and will begin to control the motor from its current speed. A short delay may be  
observed when starting motors which are not turning/On Size E1 only this parameter Sets  
a time for which DC current is injected into the motor to ensure it is stopped when the  
drive is enabled.  
39  
Parameters in the Long parameter mode  
Index Name/Selection  
Description  
Def  
2102 STOP MODE  
Selects the motor stop function  
0 : RAMP  
TO STOP  
0 : RAMP TO STOP  
When the enable signal is removed, the drive will ramp to stop, with the rate controlled by  
parameter 2203 DECEL RAMP TIME as described above. If the mains supply is lost, the drive  
will try to continue running by reducing the speed of the load, and using the load as a  
generator.  
1 : COAST TO STOP  
2 : RAMP TO STOP  
When the enable signal is removed, or if the mains supply is lost, the motor will coast  
(freewheel) to stop  
When the enable signal is removed, the drive will ramp to stop, with the rate controlled by  
parameter 2203 DECELERATION RAMP TIME. If the mains supply is lost the drive will ramp to  
stop using parameter 2206 2nd DECELERATION RAMP TIME (FAST STOP) (decel ramp with  
dynamic brake control).  
3 : COAST TO STOP  
When the enable signal is removed, the drive output is immediately disabled, and the motor  
will coast (freewheel) to stop. If the load can continue to rotate due to inertia, and the  
drive may possibly be re-enabled while the motor is still rotating, the spin start function  
(Parameter 2101 SPIN START ENABLE) should be enabled. The drive brake chopper is enabled  
in this mode, however it will only activate when required during a change in the drive  
frequency setpoint, and will not activate when stopping.  
2104 DC INJECTION TIME ON  
Defines the time for which a DC current is injected into the motor once the output frequency 0.0  
STOP  
reaches 0.0Hz. The voltage level is the same as the boost level set in parameter 2603.  
0.025.0 s  
2108 TERMINAL MODE RESTART Defines the behavior of the drive relating to the enable digital input and also configures the  
  
FUNCTION  
Automatic Restart function.  
Following Power on or reset, the drive will not start if Digital Input 1 remains closed. The  
Input must be closed after a power on or reset to start the drive.  
Following a Power On or Reset, the drive will automatically start if Digital Input 1 is closed.  
Following a trip, the drive will make up to 5 attempts to restart at 20 second intervals. The  
drive must be powered down to reset the counter. The numbers of restart attempts are  
counted, and if the drive fails to start on the final attempt, the drive will fault and will require  
the user to manually reset the fault.  
  
  
 to   
22 ACCEL/DECEL  
Acceleration and deceleration times  
2202 ACCELERATION RAMP  
TIME  
Acceleration ramp time from 0 to base speed (Parameter 9907 MOTOR RATED FREQUENCY)  
in seconds.  
Time  
5.0 s  
5.0 s  
0.00…600.0 s  
2203 DECELERATION RAMP  
TIME  
Deceleration ramp time from base frequency (Parameter 9907 MOTOR RATED FREQUENCY)  
to standstill in seconds. When set to zero, fastest possible ramp time without trip is  
activated.  
When set to 0.00, the value of 2206 is used.  
0.00…600.0 s  
Time  
2206 2nd DECELERATION RAMP This parameter allows an alternative deceleration ramp down time to be programmed into  
0.00  
TIME (FAST STOP)  
the ACS255, which can be selected by digital inputs (dependent on the setting of Parameter  
9902 DIGITAL INPUTS FUNCTION SELECT or selected automatically in the case of a mains  
power loss if parameter 2102 STOP MODE = 2.  
0.00…25.0 s  
When set to 0.00, the drive will coast to stop.  
25 CRITICAL SPEEDS  
Speed bands with which the drive is not allowed to operate.  
The Skip Frequency function is used to avoid the ACS255 operating at a certain output frequency, for  
example at a frequency which causes mechanical resonance in a particular machine.  
2500 SKIP FREQUENCY  
HYSTERESIS BAND  
The drive output frequency will ramp through the defined band at the rates set in parameter 0.0  
2202 and 2203 respectively, and will not hold any output frequency within the defined band.  
If the frequency reference applied to the drive is within the band, the drive output frequency  
will remain at the upper or lower limit of the band.  
Hz/Rpm  
0.0…2008  
2501 SKIP FREQUENCY  
Defines the center point of the skip frequency band, and is used conjunction with parameter  
2550 SKIP FREQUENCY HYSTERESIS BAND  
0.0…2008  
26 MOTOR CONTROL  
Motor control variables  
2601 ENERGY OPTIMIZER  
Enables or disables Energy optimizer  
0 :  
Disabled  
0 : DISABLED  
1 : ENABLED  
The Energy Optimizer attempts to reduce the overall energy consumed by the drive and  
motor when operating at constant speeds and light loads. The output voltage applied to the  
motor is reduced. The Energy Optimizer is intended for applications where the drive may  
operate for some periods of time with constant speed and light motor load, whether  
constant or variable torque.  
40  
Parameters in the Long parameter mode  
Index Name/Selection  
2603 V/F MODE VOLTAGE  
BOOST  
Description  
Def  
3.0 %  
Voltage boost is used to increase the applied motor voltage at low output frequencies, in order  
to improve low speed and starting torque. Excessive voltage boost levels may result in increased  
motor current and temperature, and force ventilation of the motor may be required.  
A suitable setting can usually be found by operating the motor under low load or no load  
conditions at approximately 5Hz, and adjusting parameter 2603 until the motor current is no  
more than 80% of the rated full load current.  
0.0…20.0 %  
2606 EFFECTIVE SWITCHING  
FREQUENCY  
Sets maximum effective switching frequency of the drive. If “rEd” is displayed, the  
switching frequency has been reduced to the level in Parameter 0417 INTERNAL EFFECTIVE Dependent  
SWITCHING FREQUENCY due to excessive drive heat sink temperature.  
Drive Rating  
Refer to parameter 0417 INTERNAL EFFECTIVE SWITCHING FREQUENCY for further  
information regarding operation at higher switching frequency.  
4…32 kHz  
2610 V/F CHARACTERISTIC  
ADJUSTMENT VOLTAGE  
0 V…255/500  
Used in conjunction with parameter 2611 V/F CHARACTERISTIC ADJUSTMENT FREQUENCY  
0 V  
2611 V/F CHARACTERISTIC  
This parameter in conjunction with parameter 2610 V/F CHARACTERISTIC ADJUSTMENT  
0.0 Hz  
ADJUSTMENT FREQUENCY VOLTAGE sets a frequency point at which the voltage set in parameter 2611 V/F  
CHARACTERISTIC ADJUSTMENT FREQUENCY is applied to the motor. Care must be taken to  
avoid overheating and damaging the motor when using this feature. See section 10.5 for  
further information.  
0.0 Hz…Value set in 9907  
30 FAULT FUNCTIONS  
Programmable protection functions  
3005 THERMAL OVERLOAD  
VALUE RETENTION  
0 : DISABLED  
0 :  
DISABLED  
Alternative means of protecting the motor from thermal overload must be applied (e.g.  
PTC thermistor)  
1 : ENABLED  
32 SUPERVISION  
The drive will retain the motor thermal overload value following a mains power cycle.  
Signal supervision. The drive monitors whether certain user selectable variables are within  
the user-defined limits. The user may set limits for speed, current etc. Supervision status  
can be monitored with relay output. See parameter group 14 RELAY OUTPUTS.  
Adjustable threshold level used in conjunction with settings 4 to 7 of parameter 1401  
OUTPUT RELAY FUNCTION SELECT  
3200 RELAY THRESHOLD LEVEL  
100.0 %  
0.0200.0 %  
34 PANEL DISPLAY  
Selection of actual signals to be displayed on the drives front panel e.g. to display conveyer  
speed in feet per second based on the output frequency  
3400 DISPLAY SPEED SCALING  
FACTOR  
0.000…6.000  
40 PROCESS PI SETUP  
4001 PI PROPORTIONAL GAIN  
Allow the user to display an alternative output unit scaled from an existing parameter,.  
This function is disabled if set to 0.000.  
0.000  
1.0  
Process PI control parameter set  
PI Controller Proportional Gain. Higher values provide a greater change in the drive output  
frequency in response to small changes in the feedback signal. Too high a value can cause  
instability  
0.0…30.0  
4002 PI INTEGRAL TIME  
CONSTANT  
0.0…30.0 S  
4005 PI OPERATING MODE  
0 : DIRECT OPERATION  
PI Controller Integral Time. Larger values provide a more damped response for systems  
where the overall process responds slowly  
1.0 s  
0
Use this mode if an increase in the motor speed should result in an increase in the  
feedback signal  
1 : INVERSE OPERATION  
Use this mode if an increase in the motor speed should result in a decrease in the feedback  
signal  
4010 PI REFERENCE (SETPOINT)  
Selects the source for the PID Reference / Setpoint  
0
SOURCE SELECT  
0
1
Digital Preset Setpoint. Parameter 4011 PI Digital Reference (Setpoint) is used  
Analog Input 1 Setpoint  
4011 PI DIGITAL REFERENCE  
When parameter 4010 PID REFERENCE (SETPOINT) SOURCE SELECT = 0, this parameter  
sets the preset digital reference (setpoint) used for the PID Controller  
0 %  
0
(SETPOINT)  
0.0…100.0 %  
4016 PI FEEDBACK SIGNAL  
SOURCE SELECT  
0
1
2
Analog Input 2(Terminal 4)  
Analog Input 1(Terminal 6)  
Motor Current  
41  
Parameters in the Long parameter mode  
Index Name/Selection  
53 COMMUNICATIONS  
PARAMETERS  
Description  
Def  
5302 SERIAL  
This parameter has three sub settings used to configure the Modbus RTU Serial  
Communications. The Sub Parameters are :  
Drive Address : Adr 0 to Adr 63  
1
COMMUNICATIONS  
CONFIGURATION  
Baud Rate : 9.6kbps to 115.2kbps  
Watchdog Timeout : 0 (Disabled, 300, 3000 milliseconds)  
99 START-UP DATA  
Application macros. Definition of motor set-up data.  
As shown in the table below Parameter 9902 has a number of pre-programmed parameter  
sets (and terminal functions) which the user selects to best suit the application.  
Defines the function of the digital inputs depending on the control mode setting in  
Parameter 1103 PRIMARY COMMAND SOURCE MODE. See Application macros on page 28.  
This parameter should be set to the rated (nameplate) voltage of the motor (Volts).  
9902  
9905  
DIGITAL INPUTS  
FUNCTION SELECT  
MOTOR RATED VOLTAGE  
1
Drive Rating  
Dependent  
110V/230V rated drives  
0…255V  
400V rated drives  
0…500V  
Voltage  
Note : The stress on the motor insulation is always dependent on the drive supply voltage.  
This also applies in the case where the motor voltage rating is lower than the rating of the  
drive and the supply of the drive.  
9906  
MOTOR RATED CURRENT  
This parameter should be set to the rated (nameplate) current of the motor.  
Drive Rating  
Dependent  
0.2*drive rated output  
current…1.0*drive rated  
output current  
Current  
9907  
9908  
MOTOR RATED  
FREQUENCY  
25…500Hz  
MOTOR RATED SPEED  
This parameter should be set to the rated (nameplate) frequency of the motor  
60Hz  
Frequency  
This parameter can optionally be set to the rated (nameplate) rpm of the motor. When set  
to the default value of zero, all speed related parameters are displayed in Hz, and the slip  
compensation for the motor is disabled. Entering the value from the motor nameplate  
enables the slip compensation function, and the ACS255 display will now show motor speed  
in estimated rpm. All speed related parameters, such as Minimum and Maximum Speed,  
Preset Speeds etc. will also be displayed in Rpm.  
0 Rpm  
0…30000 Rpm  
10.5. Adjusting the Voltage / Frequency (V/f) characteristics  
The V/f characteristic is defined by several parameters as follows :-  
Parameter 9905 : Motor Rated Voltage  
9905  
Parameter 9907 : Motor Rated Frequency  
The voltage set in parameter 9905 is applied to the motor at the frequency set Under  
normal operating conditions, the voltage is linearly reduced at any point below the  
motor rated frequency to maintain a constant motor torque output as shown by the  
line ‘A’ on the graph.  
By using parameters parameter 2610 and 2611, the voltage to be applied at a particular  
frequency can be directly set by the user, thereby altering the V/F characteristic.  
Reducing the voltage at a particular frequency reduces the current in the motor and  
hence the torque and power, hence this function can be used in fan and pump  
applications where a variable torque output is desired by setting the parameters as  
follows :-  
2610  
Parameter 2610 = 9905 / 4  
Parameter 2611 = 9907 / 2  
2611  
9907  
This function can also be useful if motor instability is experienced at certain  
frequencies, if this is the case increase or decrease the voltage (Parameter 2610) at the  
speed of instability (Parameter 2611).  
Frequency  
For applications requiring energy saving, typically HVAC and pumping, the energy  
optimizer (Parameter 2601) parameter can be enabled. This automatically reduces the  
applied motor voltage on light load.  
10.6. Motor Thermistor Connection  
The motor thermistor should be connected between terminals 1 and 4 as shown. A  
setting of Parameter 9902 where Digital Input 3 is programmed for ‘External Trip’ must  
be used. The current flow through the thermistor is automatically controlled to  
prevent a failure.  
1 : + 24 Volt  
4 : External Trip  
   
42  
10.7. Parameters in the Advanced parameter mode  
The following table describes the parameters that are visible in the Short parameter mode. See page 25 for how to select the  
parameter mode. All parameters are presented in detail in section 10.4.  
Parameters in the Advanced parameter mode  
Index  
2017  
Name/Selection  
Description  
Def  
Maximum Current Limit  
Defines the max current limit in vector control modes.  
150 %  
0.0175.00  
2105  
DC Injection Speed  
Sets the speed at which DC injection current is applied during braking to  
Stop, allowing DC to be injected before the drive reaches zero speed if  
desired.  
0.0 Hz/Rpm  
0.0…2008  
2106  
2301  
2605  
DC Injection Current  
Sets the level of DC injection braking current applied according to the  
conditions set in 2104 and 2105.  
20 %  
50 %  
0
0.0…100.0  
Vector Mode Gain  
Single Parameter for Vector speed loop tuning. Affects P & I terms  
simultaneously. Not active when 9903 = 1.  
0.0…200.0  
Operating Mode Select  
Provides a quick set up to configure key parameters according to the intended  
application of the drive. Parameters are preset according to the table.  
Torque  
Current Limit  
(2017)  
Characteristic  
(2610 &  
2611)  
Setting  
Application  
Spin Start  
(2101)  
0
1
2
General  
Pump  
Fan  
150%  
110%  
110%  
Constant  
Variable  
Variable  
0 : Off  
0 : Off  
2 : On  
Intended for general purpose applications.  
Intended for centrifugal pump applications.  
Intended for Fan applications.  
0: Industrial Mode  
1: Pump Mode  
2: Fan Mode  
9903  
9910  
Motor Control Mode  
Selects the motor control method.  
1
0: Vector speed control mode  
1: V/f mode  
2: PM motor vector speed control  
3: Reserved  
Motor parameter Autotune  
Drive measures the motor parameters for optimum control and efficiency.  
Following completion of the autotune.  
0: Disable  
0: Disable  
1: Enable  
Drive immediately carries out a non-rotating autotune, parameter 9910  
MOTOR PARAMETER AUTO-TUNE ENABLE returns to 0 when  
completed.  
11201  
11203  
11206  
MOTOR STATOR RESISTANCE (Rs)  
MOTOR STATOR INDUCTANCE (Lsd)  
Motor stator resistance value measured during the autotune.  
For induction motors: phase stator inductance value.  
measured during the autotune  
-
-
-
MOTOR STATOR q-axis INDUCTANCE  
(Lsq)  
 
43  
10.8. Preventing un-authorized parameter editing.  
This function can be used to prevent an un-authorized person from changing the drive parameter values; this function is disabled when  
delivered from the factory.  
Relevant Parameters  
Parameter Access Unlock  
0…65535  
1602  
Parameter Access code  
1603  
0…65535  
Locking Parameter Access  
Go to Parameter 1603 (Long Parameter group) and enter in your chosen parameter access code.  
Press the  
button to exit and parameter 1603 will then be hidden and all parameters will be “Read only” (except for  
Parameter 1602 which will remain “Read Write”.  
Unlocking Parameter Access  
Enter into Parameter 1602 the same value as 1603 (as chosen in Locking Parameter Accessabove).  
All parameters will now be Read Write” and parameter 1603 will become visible and show the value which was originally  
programmed as the parameter access code.  
To disable this feature set parameter 1603 PARAMETER ACCESS CODE to zero and then 1602 PARAMETER ACCESS UNLOCK to  
zero.  
44  
11. Modbus RTU Communications  
11.1. Introduction  
The ACS255 can be connected to a Modbus RTU network via the RJ45 connector on the front of the drive.  
11.2. Modbus RTU Specification  
Protocol  
Modbus RTU  
Error check  
Baud rate  
Data format  
Physical signal  
User interface  
CRC  
9600bps, 19200bps, 38400bps, 57600bps, 115200bps (default)  
1 start bit, 8 data bits, 1 stop bits, no parity.  
RS 485 (2-wire)  
RJ45 (see page 24 for more information)  
11.3. RJ45 Connector Configuration  
Connection details are shown on page 24.  
11.4. Modbus Telegram Structure  
The ACS255 supports Master / Slave Modbus RTU communications, using the 03 Read Holding Registers and 06 Write Single Holding  
Register commands. Many Master devices treat the first Register address as Register 0; therefore it may be necessary to convert the  
Register Numbers detail in section 45 by subtracting 1 to obtain the correct Register address. The telegram structure is as follows:-  
Command 03 Read Holding Registers  
Command 06 Write Single Holding Register  
Master Telegram  
Slave Address  
Length  
Slave Response  
Slave Address  
Starting Address  
1st Register Value  
2nd Register Value  
Etc...  
Length  
Master Telegram  
Slave Address  
Function Code (06)  
Register Address  
Value  
Length  
Slave Response  
Slave Address  
Function Code (06)  
Register Address  
Register Value  
CRC Checksum  
Length  
1
1
2
2
2
Byte  
1
1
2
2
Byte  
Byte  
Bytes  
Bytes  
1
1
2
2
2
Byte  
Byte  
Bytes  
Bytes  
Bytes  
1
1
2
2
2
Byte  
Byte  
Bytes  
Bytes  
Bytes  
Function Code (03)  
1st Register Address  
No. Of Registers  
CRC Checksum  
Byte  
Bytes  
Bytes  
Bytes  
CRC Checksum  
CRC Checksum  
2
Bytes  
11.5. Modbus Register Map  
Par.  
Function  
Register  
Number  
1
Supported  
Commands  
03,06  
Type  
Range  
Explanation  
16 Bit Word.  
Low Byte  
High Byte  
-
R/W  
Drive Control Command  
0..3  
Bit 0 : Low = Stop, High = Run Enable  
Bit 1 : Low = Decel Ramp 1 (parameter 2203),  
High = Decel Ramp 2 (Parameter 2206)  
Bit 2 : Low = No Function, High = Fault Reset  
Bit 3 : Low No Function, High = Coast Stop  
request  
2
4
6
-
-
-
R/W  
R/W  
R
03,06  
03,06  
03  
Modbus Speed reference setpoint  
Acceleration and Deceleration Time 0..60000 Ramp time in seconds x 100, e.g. 255 = 2.5 seconds  
0..5000  
Setpoint frequency x10, e.g. 100 = 10.0Hz  
Error code  
Drive status  
Low Byte = Drive Error Code, see page 50  
High Byte = Drive Status as follows :-  
0 : Drive Stopped, 1: Drive Running, 2: Drive Tripped  
7
8
11  
R
R
R
03  
03  
03  
Output Motor Frequency  
Output Motor Current  
Digital input status  
0..20000 Output frequency in Hz x10, e.g. 100 = 10.0Hz  
0..480  
0..15  
Output Motor Current in Amps x10, e.g. 10 = 1.0 Amps  
Indicates the status of the 4 digital inputs  
Lowest Bit = 1 Input 1  
-
20  
21  
22  
23  
24  
0120  
0121  
0111  
0107  
0110  
R
R
R
R
R
03  
03  
03  
03  
03  
Analog Input 1 value  
Analog Input 2 value  
Speed Reference Value  
DC bus voltage  
0..1000  
0..1000  
0..1000  
0..1000  
0..100  
Analog input % of full scale x10, e.g. 1000 = 100%  
Analog input % of full scale x10, e.g. 1000 = 100%  
Displays the setpoint frequency x10, e.g. 100 = 10.0Hz  
DC Bus Voltage in Volts  
Drive temperature  
Drive heatsink temperature in ºC  
All user configurable parameters are accessible as Holding Registers, and can be Read from or Written to using the appropriate Modbus  
command. To access drive parameters refer to section 11.6 for parameter register map.  
Depending on the operating mode of the drive some parameters cannot be changed whilst the drive is enabled for example.  
Modbus RTU supports sixteen bit integer values, hence where a decimal point is used in the drive parameter; the register value will be  
multiplied by a factor of ten, E.g. Read Value of parameter 2008 MAXIMUM FREQUENCY / SPEED LIMIT = 500, therefore this is 50.0Hz  
             
45  
11.6. Modbus Parameter Register Map  
Register No Parameter No  
Description  
129  
130  
131  
132  
133  
134  
135  
136  
137  
138  
139  
140  
141  
142  
143  
144  
145  
146  
147  
148  
149  
150  
151  
152  
153  
154  
0401  
1100  
1103  
1202  
1203  
1204  
1205  
1300  
1301  
1302  
1304  
1401  
1501  
1602  
1603  
2007  
2008  
2020  
2101  
2102  
2104  
2108  
2202  
2203  
2206  
2550  
TRIP HISTORY LOG  
KEYPAD MODE RESTART FUNCTION  
PRIMARY COMMAND SOURCE MODE  
PRESET / JOG FREQUENCY / SPEED 1  
PRESET / JOG FREQUENCY / SPEED 2  
PRESET / JOG FREQUENCY / SPEED 3  
PRESET / JOG FREQUENCY / SPEED 4  
ANALOG INPUT 1 SIGNAL FORMAT  
ANALOG INPUT 1 OFFSET  
ANALOG INPUT 1 SCALING  
ANALOG INPUT 2 SIGNAL FORMAT  
OUTPUT RELAY FUNCTION SELECT  
ANALOG OUTPUT FUNCTION SELECT  
PARAMETER ACCESS UNLOCK  
PARAMETER ACCESS CODE DEFINITION  
MINIMUM FREQUENCY / SPEED LIMIT  
MAXIMUM FREQUENCY / SPEED LIMIT  
BRAKE CHOPPER ENABLE  
SPIN START (Size E2 & E3 ONLY) / DC INJECTION TIME ON START (Size E1 ONLY)  
STOP MODE  
DC INJECTION TIME ON STOP  
TERMINAL MODE RESTART FUNCTION  
ACCELERATION RAMP TIME  
DECELERATION RAMP TIME  
2nd DECELERATION RAMP TIME (FAST STOP)  
SKIP FREQUENCY HYSTERESIS BAND  
155  
2551  
SKIP FREQUENCY  
156  
157  
158  
159  
160  
161  
162  
163  
164  
165  
166  
167  
168  
169  
170  
171  
172  
173  
2601  
2603  
2606  
2610  
2611  
3005  
3200  
3400  
4001  
4002  
4005  
4010  
4011  
4016  
5302  
9902  
9905  
9906  
ENERGY OPTIMISER  
V/F MODE VOLTAGE BOOST  
EFFECTIVE SWITCHING FREQUENCY  
V/F CHARACTERISTIC ADJUSTMENT VOLTAGE  
V/F CHARACTERISTIC ADJUSTMENT FREQUENCY  
THERMAL OVERLOAD VALUE RETENTION  
RELAY THRESHOLD LEVEL  
DISPLAY SPEED SCALING FACTOR  
PI PROPORTIONAL GAIN  
PI INTEGRAL TIME CONSTANT  
PI Operating Mode  
PI Reference (Setpoint) Source Select  
PI Digital Reference (Setpoint)  
PI Feedback Signal Source Select  
SERIAL COMMUNICATIONS CONFIGURATION  
DIGITAL INPUTS FUNCTION SELECT  
Motor Rated Voltage  
Motor Rated Current  
174  
175  
9907  
9908  
Motor Rated Frequency  
MOTOR RATED SPEED  
 
46  
12.Technical Data  
12.1. Environmental  
Operational ambient temperature range  
(IP20) Open Drives :  
(IP66) Enclosed Drives:  
-10 … 50°C (frost and condensation free)  
-10 ... 40°C (frost and condensation free)  
-40 … 60°C  
2000m. Derate above 1000m : 1% / 100m  
95%, non-condensing  
Storage ambient temperature range  
Maximum altitude  
Maximum humidity  
:
:
:
For UL compliance: the average ambient temperature over a 24 hour period for 200-240V, 3HP (IP20) drives is 45°C.  
Also Refer to section 12.5 for Output current Derating Information.  
NOTE  
12.2. Rating Tables  
The following tables provide the output current rating information for the various ACS255 models. ABB Drives always recommend that  
selection of the correct ACS255 is based upon the motor full load current at the incoming supply voltage.  
Cable sizes shown are the maximum possible that may be connected to the drive. Cables should be selected according to  
local wiring codes or regulations at the point of installation  
The rated fuse currents given in the table are the maximums for the mentioned fuse types. If smaller fuse ratings are used, check that the fuse  
rms current rating is larger than the nominal input current. If 150% output power is needed, multiply nominal input current by 1.5.  
Check that the operating time of the fuse is below 0.5 seconds. The operating time depends on the fuse type, the supply network impedance  
as well as the cross-sectional area, material and length of the supply cable. In case the 0.5 seconds operating time is exceeded with the gG or T  
fuses, ultra rapid (aR) fuses in most cases reduce the operating time to an acceptable level.  
Note: Larger fuses must not be used when the input power cable is selected according to this table.  
Maximum  
Motor Cable  
Length  
Fuse  
(A)  
Maximum  
Cable Size  
Nominal  
Output  
Current  
(A)  
Nominal  
Input  
Current (A)  
Nominal Input  
Current with 3%  
Line Choke (A)  
Recommended  
Brake Resistance  
(Ω)  
Power  
(HP)  
Frame  
Size  
Model Number  
UL  
Class  
gG  
mm2  
AWG  
Mtrs  
CC or J  
1-phase 110V…115V AC (+/-10%) - 3 Phase 230V Output  
ACS255-01U-02A3-1  
ACS255-01U-04A3-1  
ACS255-01U-05A8-1  
0.5  
1
1.5  
7.8  
15.8  
21.9  
7.1  
15.0  
20.1  
10  
25  
32  
10  
20  
30  
8
8
8
8
8
8
2.3  
4.3  
5.8  
100  
100  
100  
N/A  
N/A  
50  
E1  
E1  
E2  
1-phase 200…240V AC (+/-10%) - 3 Phase Output  
ACS255-01U-02A3-2  
ACS255-01U-04A3-2  
ACS255-01U-06A1-2  
ACS255-01U-07A0-2  
ACS255-01U-10A5-2  
ACS255-01U-15A3-2  
0.5  
1.0  
1.5  
2.0  
3.0  
5.0  
3.7  
7.5  
11.0  
12.9  
19.2  
29.2  
2.9  
6.6  
9.7  
11.4  
17.0  
25.9  
10  
10  
16  
16  
25  
40  
6
10  
15  
17.5  
25  
40  
8
8
8
8
8
8
8
8
8
8
8
8
2.3  
4.3  
6.1  
7
10.5  
15.3  
100  
100  
100  
100  
100  
100  
N/A  
N/A  
N/A  
*100  
50  
E1  
E1  
E1  
E2  
E2  
E3  
50  
3-phase 200…240V AC (+/-10%) - 3 Phase Output  
ACS255-03U-02A3-2  
ACS255-03U-04A3-2  
ACS255-03U-06A1-2  
ACS255-03U-07A0-2  
ACS255-03U-10A5-2  
ACS255-03U-18A0-2  
0.5  
1.0  
1.5  
2.0  
3.0  
5.0  
3.4  
5.6  
8.1  
8.9  
12.1  
20.9  
2.8  
4.4  
6.3  
7.0  
9.9  
6
6
10  
15  
15  
17.5  
30  
8
8
8
8
8
8
8
8
8
8
8
8
2.3  
4.3  
6.1  
7
10.5  
18  
100  
100  
100  
100  
100  
100  
N/A  
N/A  
N/A  
100  
50  
E1  
E1  
E1  
E2  
E2  
E3  
10  
10  
16  
16  
32  
17.4  
50  
3-phase 380…480V AC (+/-10%) - 3 Phase Output  
ACS255-03U-01A2-4  
ACS255-03U-02A2-4  
ACS255-03U-03A3-4  
ACS255-03U-04A1-4  
ACS255-03U-05A8-4  
ACS255-03U-09A5-4  
ACS255-03U-14A0-4  
ACS255-03U-18A0-4  
0.5  
1
1.5  
2
3
5
1.9  
3.5  
4.6  
5.6  
7.5  
11.5  
17.2  
21.2  
1.5  
2.7  
3.3  
4.5  
5.5  
9.2  
14.5  
17.2  
6
6
6
6
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
1.2  
2.2  
3.3  
4.1  
5.8  
9.5  
14  
100  
100  
100  
100  
100  
100  
100  
100  
N/A  
N/A  
N/A  
*200  
200  
100  
100  
50  
E1  
E1  
E1  
E2  
E2  
E2  
E3  
E3  
10  
10  
16  
16  
25  
32  
10  
10  
10  
15  
25  
30  
7.5  
10  
18  
*Internal Braking transistor only available on drives with “+D150” in the model type designation (see section 3.3).  
Note  
Note  
For UL compliance, Motor Cable to be 75°C Copper.  
Other fuse types can be used if they meet the ratings and the melting curve of the fuse does not exceed the melting  
curve of the fuse mentioned in this table.  
       
47  
12.3. Overload  
The ACS255 can deliver 150% of the drive nominal output current for 60 seconds and 175% for 2 seconds.  
12.4. Additional Information for UL Compliance  
ACS255 is designed to meet the UL requirements. In order to ensure full compliance, the following must be fully observed.  
For an up to date list of UL compliant products, please refer to UL listing NMMS.E211945  
The drive can be operated within an ambient temperature range as stated in section 12.1  
For IP20 units, the drive must be installed in a cabinet to fulfil the requirements for shielding from contact and environment  
contamination.  
For IP66 units, indoor installation in an environment free from icing and condensation.  
UL Listed ring terminals / lugs must be used for all bus bar and grounding connections.  
Input Power Supply Requirements  
Supply Voltage  
110-115 Volts RMS for 110 Volt rated drives, + /- 10% variation allowed.  
200 240 Volts RMS for 230 Volt rated drives, + /- 10% variation allowed.  
380 480 Volts RMS for 400 Volt rated drives, + / - 10% variation allowed.  
Imbalance  
Maximum 3% voltage variation between phase phase voltages allowed  
All ACS255 units have phase imbalance monitoring. A phase imbalance of > 3% will result in the drive tripping. For  
input supplies which have supply imbalance greater than 3% (typically the Indian sub- continent & parts of Asia Pacific  
including China) ABB recommends the installation of input line reactors.  
50 60Hz + / - 5% Variation  
Frequency  
Short Circuit Capacity Voltage Rating  
Min HP  
0.5  
0.5  
Max HP  
1.5  
5
Maximum supply short-circuit current  
100kA rms (AC)  
100kA rms (AC)  
115V  
230V  
400 / 460V  
0.5  
10  
100kA rms (AC)  
All the drives in the above table are suitable for use on a circuit capable of delivering not more than the above  
specified maximum short-circuit Amperes symmetrical with the specified maximum supply voltage.  
Incoming power supply connection must be according to section 5.3  
All ACS255 units are intended for indoor installation only and within controlled environments which meet the condition limits shown in section  
Branch circuit protection must be installed according to the relevant national codes. Fuse ratings and types are shown in section 12.2  
Suitable Power and motor cables should be selected according to the data shown in section 12.2  
Power cable connections and tightening torques are shown in section 4.  
ACS255 provides motor overload protection in accordance with the National Electrical Code (US).  
Where a motor thermistor is not fitted, or not utilized, It is recommended that the Thermal Overload Memory Retention is enabled  
by setting 3005 THERMAL OVERLOAD VALUE RETENTION = 1  
Where a motor thermistor is fitted and connected to the drive, connection must be carried out according to the information shown  
in section 10.6.  
12.5. Derating Information  
Derating of the drive maximum continuous output current capacity is required when  
Operating at ambient temperature in excess of 40°C / 104°F.  
Operating at Altitude in excess of 1000m/ 3281 ft.  
Operation with Effective Switching Frequency higher than the minimum setting.  
The following derating factors should be applied when operating drives outside of these conditions.  
12.5.1. Derating for Ambient Temperature  
Maximum Temperature  
Maximum Permissible Operating  
Ambient Temperature with  
Derating (Non UL Approved)  
50°C  
Enclosure Type  
Without Derating.  
(UL Approved)  
50°C / 122°F  
Derate by  
IP20  
IP66  
N/A  
40°C / 104°F  
2.5% per °C (1.8°F)  
50°C  
12.5.2. Derating for Altitude  
Enclosure Type  
Maximum Altitude  
Derate by  
Maximum Permissible  
Maximum Permissible  
(Non-UL Approved)  
4000m / 13123 ft  
Without Derating  
1000m / 3281ft  
1000m / 3281ft  
(UL Approved)  
2000m / 6562 ft  
2000m / 6562 ft  
IP20  
IP66  
1% per 100m / 328 ft  
1% per 100m / 328 ft  
4000m / 13123 ft  
12.5.3. Derating for Switching Frequency  
Switching Frequency (Where available)  
Enclosure Type  
IP20  
4kHz  
N/A  
N/A  
8kHz  
N/A  
10%  
12kHz  
20%  
25%  
16kHz  
30%  
35%  
24kHz  
40%  
50%  
32kHz  
50%  
50%  
IP66  
     
48  
12.5.4. Example of applying Derating Factors  
A 5Hp, 400V/460V IP66 drive is to be used at an altitude of 2000 meters above sea level, with 12kHz switching frequency and 45°C ambient  
temperature.  
From the table above, we can see that the rated current of the drive is 9.5 Amps at 40°C,  
Firstly, apply the switching frequency derating, 12kHz, 25% derating  
9.5 Amps x 75% = 7.1 Amps  
Now, apply the derating for higher ambient temperature, 2.5% per °C above 40°C = 5 x 2.5% = 12.5%  
7.1 Amps x 87.5% = 6.2 Amps  
Now apply the derating for altitude above 1000 meters, 1% per 100m above 1000m = 10 x 1% = 10%  
7.9 Amps x 90% = 5.5 Amps continuous current available.  
If the required motor current exceeds this level, it will be necessary to either  
-
-
Reduce the switching frequency selected  
Use a higher power rated drive and repeat the calculation to ensure sufficient output current is available.  
12.6. Mains Line input Reactors  
An optional Line reactor is recommended to be installed on drives where any of the following site conditions occur:-  
o The incoming supply impedance is low or the fault level / short circuit current is high.  
o If the transformer kVA rating is more than 10x the kVA rating of the drive or ensure that the per drive source  
Impedance is less than 0.5%.  
o The supply is prone to dips or brown outs.  
o An imbalance exists on the supply (3 phase drives).  
o The power supply to the drive is via a busbar and brush gear system (typically overhead Cranes).  
o Reduction in Harmonics generated by the drive.  
In all other installations, it is good practice to install a line reactor as added protection of the drive against power supply faults.  
12.6.1. Selecting a Line Reactor  
The chosen Line reactor should be in the region of 3% impedance; higher values can be used but will result in less voltage (and less torque) to  
the motor as full load is reached.  
The continuous current rating should be at least the value of the drives input current rating, with a peak current rating of at least 2 times the  
continuous current rating.  
 
49  
13.Appendix: Permanent magnet synchronous motors (PMSMs)  
With PMSMs special attention must be paid on setting the motor nominal values correctly in parameter group 99 START-UP DATA. It is  
important that the nominal back-emf of the motor is available, further to ensure good performance a MOTOR PARAMETER AUTO-TUNE  
(9910=1) must be performed.  
The following table lists the basic parameter settings needed for permanent magnet synchronous motors.  
13.1. PMSM Motor nameplate data entry.  
Action  
Additional Information  
Enable PMSM  
motor control  
Set 9903 to 2  
The phase to phase value (at motor rated Speed) should be obtained from the  
motor nameplate or datasheet. If the voltage is given as a proportional value,  
such as 103V/1000 rpm in a 3000rpm motor, set 309V here. Sometimes the  
value is given as the peak value. In this case divide the value by the square  
root of 2 (1.41).  
Enter motor back- Enter Back EMF value into 9905  
EMF voltage value  
Note: Incorrect value can result in abnormal motor operation (motor vibration)  
Obtained from Motor nameplate (Amps).  
Enter Motor  
Rated Current  
Enter value into 9906  
Note : The drive uses 9907 to calculate the number of motor pole pairs.  
Enter Motor  
Rated Frequency  
Enter value into 9907  
Frequency (Hz) = speed (rpm) x (number of pole pairs) / 60  
Obtained from Motor nameplate (rpm)  
Enter Motor  
Enter value into 9908  
Rated Speed  
Speed (rpm) = frequency (Hz) x 60 / (number of pole pairs)  
16kHz provides optimum motor control.  
Set Motor  
Switching Frequency  
Set 2606 to 16kHz  
13.2. PMSM Motor Auto-tune.  
A Motor Auto-tune must be carried out in order to measure the motor electrical characteristics.  
Action  
Additional Information  
The display will show .  
Once the Auto-tune is completed 9910 will return to 0 and the display will  
Enable Motor  
Auto-tune  
Set 9910 to a 1 and press the  
button.  
show .  
Note: Motor Auto-tune will need to be repeated if the motor, motor cables,  
motor parameters or drive control mode is changed in 9903.  
13.3. Troubleshooting  
Observation  
Action  
Poor torque performance at low speed/poor motor start- Increase value in 2603 (Boost current level)  
up  
Check correct settings of motor nameplate data.  
Check correct value of 9905 (Motor Back EMF voltage).  
Reduce value of 2301 (Vector Speed Gain)(As much as 50% reduction in some  
instances)  
Motor Vibration/trips/Cogging at low speed  
Check correct settings of motor nameplate data.  
Check correct value of 9905 (Motor Back EMF voltage).  
Check Correct setting of 2603 (Boost current level)  
  
Care should be taken not to apply to high of a value in 2603 (Boost current level) as excess motor heating may result.  
50  
14.Trouble Shooting  
14.1. Fault Code Messages  
Fault  
Code  
No.  
Description  
Corrective Action  
Drive is READY and in a stopped condition. The motor is not energized. No enable signal is present to start the drive  
  
0x00  
Press the STOP key, drive is ready to configure for particular application  
Fault occurs immediately on drive enable or run command  
Check the output wiring connections to the motor and the motor for short circuits phase to  
phase and phase to earth.  
Fault occurs during motor starting  
Check the motor is free to rotate and there are no mechanical blockages. If the motor has a  
brake fitted, check the brake is releasing correctly. Check for correct star-delta motor wiring.  
Ensure the motor nameplate current is correctly entered in parameter 9906. Increase  
acceleration time in parameter 2202. Reduce motor boost voltage setting in parameter 2603  
Fault occurs when motor operating at constant speed Investigate overload.  
Fault occurs during motor acceleration or deceleration  
0X0A Factory Default parameters have been loaded  
Instantaneous Over current on the drive  
output.  
  
  
  
Excess load or shock load on the motor.  
0x03  
The accel/decel times are too short requiring too much power. If parameter 2202 or 2203  
cannot be increased, a bigger drive may be required  
Ensure the correct motor nameplate current value is entered in parameter 9906. Check for  
correct Star or Delta wiring configuration. Check to see when the decimal points are flashing  
(which indicates the output current > parameter 9906 value) and either increase acceleration  
ramp (parameter 2202) or decrease motor load. Check the total motor cable length is within  
the drive specification. Check the load mechanically to ensure it is free, and that no jams,  
blockages or other mechanical faults exist  
Motor thermal overload protection trip. The  
drive has tripped after delivering >100% of  
value in 9906 for a period of time to prevent  
damage to the motor.  
0x04  
Check the cabling to the brake resistor and the brake resistor for short circuits or damage.  
Ensure the resistance of the brake resistor is equal to or greater than the minimum value for the  
relevant drive shown in the table in section 12.2  
Brake channel over current (excessive current  
in the brake resistor)  
  
0x01  
0x02  
Only occurs if parameter 2020 = 1. The internal software protection for the brake resistor has  
activated to prevent damage to the brake resistor.  
Brake resistor thermal overload. The drive has  
tripped to prevent damage to the brake  
resistor  
  
Increase the deceleration time (parameter 2203) or 2nd deceleration time (parameter 2206).  
Reduce the load inertia  
For Other Brake Resistors  
Ensure the resistance of the brake resistor is equal to or greater than the minimum value for the  
relevant drive shown in the table in section 12.2. Use an external thermal protection device for  
the brake resistor. In this case, parameter 2020 may be set to 2  
Check the wiring to motor and the motor for phase to phase and phase to earth short circuits.  
Disconnect the motor and motor cable and retest. If the drive trips with no motor connected, it  
must be replaced and the system fully checked and retested before a replacement unit is  
installed.  
Hardware Over Current  
  
0x05  
Check the supply voltage is within the allowed tolerance for the drive. If the fault occurs on  
deceleration or stopping, increase the deceleration time in parameter 2203 or install a suitable  
brake resistor and activate the dynamic braking function with parameter 2020  
The incoming supply voltage is too low. This trip occurs routinely when power is removed from  
the drive. If it occurs during running, check the incoming power supply voltage and all  
components in the power feed line to the drive.  
The drive is too hot. Check the ambient temperature around the drive is within the drive  
specification. Ensure sufficient cooling air is free to circulate around the drive.  
Increase the panel ventilation if required. Ensure sufficient cooling air can enter the drive, and  
that the bottom entry and top exit vents are not blocked or obstructed.  
Trip occurs when ambient temperature is less than -10°C. The temperature must be raised over  
-10°C in order to start the drive.  
Over voltage on DC bus  
Under voltage on DC bus  
Heatsink over temperature  
  
  
  
0x06  
0x07  
0x08  
0x09  
Under temperature  
  
Refer to your local ABB representative  
Drive ambient temperature too high, check adequate cooling air is provided  
E-trip requested on control input terminals. Some settings of parameter 9902 DIGITAL INPUTS  
FUNCTION SELECT require a normally closed contactor to provide an external means of tripping  
the drive in the event that an external device develops a fault. If a motor thermistor is  
connected check if the motor is too hot.  
0x10  
0x17  
0x0B  
Faulty thermistor on heatsink.  
Drive internal temperature too high  
External trip  
  
  
  
(on digital input 3)  
Check communication link between drive and external devices. Make sure each drive in the  
network has its unique address.  
Comms loss trip  
  
0x0C  
Drive intended for use with a 3 phase supply has lost one input phase.  
Spin start function failed to detect the motor speed.  
Parameters not saved, defaults reloaded.  
Try again. If problem recurs, refer to your local ABB representative  
0x0E  
0x0F  
Input phase loss trip  
Spin start failed  
Internal memory fault.  
  
  
  
0x11  
Check input current in range defined by parameter 1300.  
Refer to your local ABB representative  
Refer to your local ABB representative  
Measured motor stator resistance varies between phases. Ensure the motor is correctly  
connected and free from faults. Check the windings for correct resistance and balance.  
Measured motor stator resistance is too large. Ensure the motor is correctly connected and free  
from faults. Check that the power rating corresponds to the power rating of the connected  
drive.  
0x12 Analog input current out of range  
  
  
  
  
-
-
Internal drive Fault  
Internal drive Fault  
40  
41  
  
Measured motor inductance is too low. Ensure the motor is correctly connected and free from  
faults.  
Measured motor inductance is too large. Ensure the motor is correctly connected and free from  
faults. Check that the power rating corresponds to the power rating of the connected drive.  
Measured motor parameters are not convergent. Ensure the motor is correctly connected and  
free from faults. Check that the power rating corresponds to the power rating of the drive.  
Autotune Fault  
42  
43  
44  
  
  
  
   
51  
52  
Contact us  
ABB Oy  
ABB Inc.  
Canada Headquarters, Low  
Voltage Drives  
AC Drives  
Automation Technologies  
Drives & Motors  
16255 West Glendale Drive  
New Berlin, WI 53151  
USA  
ABB Inc.  
P.O. Box 184  
FI-00381 HELSINKI  
FINLAND  
800 Boulevard Hymus,  
Saint-Laurent, Québec, H4S 0B5  
Canada  
Telephone  
Fax:  
+358 10 22 11  
+358 10 22 22681  
Telephone : 1-888-856-6266  
1-800-HELP-365  
Telephone  
262 785-3200  
1-800-HELP-365  
262 780-5135  
Fax:  
(514) 856-6297  
Fax:  
  
3AXD10000528266  

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