NFB
5. The AC Motor Drive and braking
unit will be electrified at the same time
while turning on the NFB (No-fuse
breaker). For the operation/stop
method of the motor, please refer to the
user manual of the AC Motor Drives
VFD Series. The braking unit will
detect the inner DC voltage of the AC
motor drive when it stops the motor by
deceleration. The extra regeneration
will be dissipated away rapidly by the
braking resistor in the form of heat. It
can ensure the stable deceleration
characteristic.
MC
2007-07-19
R/L1
S/L2
T/L3
R/L1
S/L2
T/L3
U/T1
V/T2
W/T3
` All Braking Resistors & Braking Units Use in the AC Drives
IM
MOTOR
Thermal Overload
Relay
Min.
Applicable
Motor
O.L.
Thermal
Braking Unit
Model VFDB
No. of Units
Used
Typical
Thermal
Overload
Relay Value
VFD
+(P)
-(N)
B1
Full- load
Torque
kg-M
Resistor Value
Spec for Each
AC Motor Drive
+(P)
-(N)
Equivalent
Resistor Value
for Each AC
Motor Drive
10Ω
MC
SA
O.L.
Braking Resistors
Model and No. of Units Torque
Braking
Series
Braking
VFDB
Braking
Unit
Overload
Relay or
temperature
switch
Resistor
BR
HP
kW
5011628404-BM04
VFDB Series Braking Modules Instruction Sheet
X Preface
Used
10%ED
Surge
Absorber
E.F
RA
RC
DCM
B2
Temperature
Switch
20
25
30
40
50
20
25
30
40
50
60
75
100
20
25
30
40
50
60
75
100
15
8.248
3000W 10Ω
4800W 8Ω
2015
2022
2022
2015
2015
4030
4030
4030
4030
4045
4045
4030
4045
5055
5055
5055
5055
5055
5055
5055
5055
1
1
1
2
2
1
1
1
1
1
1
2
2
1
1
1
1
1
1
1
2
BR1K5W005
BR1K2W008
BR1K2W6P8
BR1K5W005
BR1K2W008
BR1K5W040
BR1K2W008
BR1K2W6P8
BR1K5W005
BR1K2W008
BR1K2W6P8
BR1K5W005
BR1K2W6P8
BR1K0W020
BR1K0W050
BR1K2W008
BR1K2W6P8
BR1K5W005
BR1K2W008
BR1K2W6P8
BR1K5W005
2
4
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
30
35
40
30
30
15
15
20
30
40
50
30
50
15
15
20
25
30
35
45
45
18.5 10.281
8Ω
6.8Ω
5Ω
Note1: When using the AC drive with DC reactor, please refer to wiring diagram in the AC drive
user manual for the wiring of terminal +(P) of Braking unit.
Note2: Do NOT wire terminal -(N) to the neutral point of power system.
22
30
37
15
12.338
16.497
20.6
4800W 6.8Ω
6000W 5Ω
4
4
9600W 4Ω
8
4Ω
6. Besides using thermal overload relay to be the protection system and braking resistor, temperature switch can be installed on braking
resistor side as the protection. The temperature switch must comply with the braking resistor specification or contact your dealer.
8.248
1500W 40Ω
4800W 32Ω
4800W 27.2Ω
6000W 20Ω
9600W 16Ω
9600W 13.6Ω
12000W 10Ω
19200W 6.8Ω
3000W 60Ω
4000W 50Ω
6000W 40Ω
6000W 34Ω
7500W 25Ω
12000W 20Ω
12000W 17Ω
15000W 12.5Ω
1
40Ω
32Ω
27.2Ω
20Ω
16Ω
13.6Ω
10Ω
6.8Ω
60Ω
50Ω
40Ω
34Ω
25Ω
20Ω
17Ω
12.5Ω
18.5 10.281
4
22
30
37
45
55
75
15
12.338
16.497
20.6
4
Thank you for choosing DELTA’s braking module. VFDB braking units are applied to absorb the motor regeneration energy when the
three-phase induction motor stops by deceleration. With VFDB braking unit, the regeneration energy will be dissipated in dedicated
braking resistors. To prevent mechanical or human injury, please refer to this instruction sheet before wiring. VFDB braking units are
suitable for DELTAAC Motor Drives VFD Series 230V/460V/575V. VFDB braking units need to be used in conjunction with BR series
braking resistors to provide the optimum braking characteristics. VFDB braking units (2015, 2022, 4030, 4045 and 5055) are approved
by Underwriters Laboratories, Inc. (UL) and Canadian Underwriters Laboratories (cUL). The content of this instruction sheet may be
revised without prior notice. Please consult our distributors or download the most updated version at
4
] Wiring Notice
8
24.745
31.11
42.7
8
ꢀDo not proceed with wiring while power is applied to the circuit.
ꢀThe wiring gauge and distance must comply with the electrical code.
8
16
3
ꢀThe +(P), -(N) terminals of the AC motor drive (VFD Series), connected to the braking unit (VFDB), must be confirmed
8.248
for correct polarity lest the drive and the braking unit be damaged when power on.
18.5 10.281
4
ꢀWhen the braking unit performs braking, the wires connected to +(P), -(N), B1 and B2 would generate a powerful
electromagnetic field for a moment due to high current passing through. These wires should be wired separately from
other low voltage control circuits lest they make interference or mis-operation.
22
30
37
45
55
75
12.338
16.497
20.6
5
5
Y Specifications
VFDB Braking Units
Braking Resistors
5
ꢀWiring distance
ꢀInflammable solids, gases or liquids must be avoided at the
location where the braking resistor is installed. The braking
resistor had better be installed in individual metallic box with
forced air-cooling.
24.745
31.11
42.7
10
10
10
Specification
230V Series
460V Series
575V Series
Model no.
Specification
1500W 5.0Ω
1200W 6.8Ω
VFDB
2015
2022
4030
4045
5055
VFD series
Model VFDB-
2015
15
2022
22
4030
30
4045
45
5055
55
BR1K5W005
BR1K2W6P8
15~55kW
230/460/
575V
BR
ꢀConnect the ground terminal to the Earth Ground. The ground
Max. Motor Capacity (KW)
Max 5M
Max 10M
lead must be at least the same gauge wire as leads +(P), -(N).
Max. Discharge Current
(A) 10%ED
1200W 8.0Ω
1500W 40Ω
1000W 50Ω
40
60
40
60
60
20
BR1K2W008
BR1K5W040
BR1K0W050
AC Motor Drive
Braking Unit
ꢀPlease install the braking resistor with forced air-cooling or
the equivalent when frequent deceleration braking is
performed (over 10%ED).
Braking Resistor
Continuous Discharge
Current (A)
15
20
15
18
a Wiring Examples of Braking Resistors
ꢀTo prevent personal injury, do not connect/disconnect wires or
regulate the setting of the braking unit while power on. Do not touch
the terminals of related wiring and any component on PCB lest users
be damaged by extreme dangerous DC high voltage.
330/345/360/380/400/ 660/690/720/760/800/
Braking Start-up Voltage
(DC)
950±8V
ꢀThe ring terminals are suggested to be used for main circuit
415±3V
830±6V
NOTE: Before wiring, please notice equivalent resistors value shown in the column “Equivalent resistors specification for each braking
unit” in the above table to prevent damage.
wiring. Make sure the terminals are fastened before power on.
200—400VDC
400—800VDC
1000W 75Ω
DC Voltage
607-1000VDC
BR1K0W075
Min. Equivalent Resistor for Each
Braking Unit
10Ω
6.8Ω
20Ω
13.6Ω
15.8Ω
230V 20HP
230V 25HP/30HP
Thermal Overload
Relay
Thermal Overload
Relay
Temperature over +95℃ (203oF)
^ Definition for Braking Usage ED%
Heat Sink Overheat
NOTE
Z Dimensions
B1
B1
+(P)
-(N)
+(P)
-(N)
+(P)
-(N)
+(P)
-(N)
O.L.
Alarm Output
Relay contact 5A120VAC/28VDC (RA, RB, RC)
O.L.
VFD
Series
ꢀBefore regulating the power voltage, make
sure the power has been turned off. Please set
power voltage as the possible highest voltage
for unstable power system. Take 380VAC
power system for example. If the voltage may
be up to 410Vac, 415VAC should be regulated.
VFDB
2022
Braking
Unit
VFD
Series
VFDB
2015
Braking
Unit
-
Braking Resistors
Braking
Resistor
100%
Power Charge Display
Installation Location
Operating Temperature
Storage Temperature
Humidity
Blackout until bus (+~-) voltage is below 50VDC
Indoor (no corrosive gases, metallic dust)
-10℃~+50℃ (14oF to 122oF)
VFD185_23_
VFD220_23_
Braking
Resistor
VFD150_23_
MASTER
B2
MASTER
B2
1. VFD185_23_ uses with two BR sets in parallel, which 2PCS BR1K2W008 braking resistors
in series for each BR set.
2. VFD220_23_ uses with two BR sets in parallel, which 2PCS BR1K2W6P8 braking resistors
in series for each BR set.
VFD150_23_ uses with 2PCS BR1K5W005 braking resistors in series
T1
-20℃~+60℃ (-4oF to 140oF)
ED% = T1/T0x100(%)
Braking Time
ꢀFor DELTA’s AC motor drive VFD Series,
please set parameter (Over Voltage Stall
Prevention) as “close” to disable over-voltage
stall prevention, to ensure stable deceleration
characteristic. For VFDB-5055, the jumper
can only be put on the position as shown in the
following figure. Do NOT remove the jumper
to other place.
T0
230V 40HP
230V 50HP
Cycle Time
90% Non-condensing
Thermal Overload Relay
B1
Thermal Overload Relay
Thermal Overload Relay
B1
Thermal Overload Relay
B1
9.8m/s2 (1G) under 20Hz
+(P) -(N)
+(P) -(N)
Explanation: The definition of the barking usage ED(%) is for assurance of
enough time for the braking unit and braking resistor to dissipate away heat
generated by braking. When the braking resistor heats up, the resistance would
increase with temperature, and braking torque would decrease accordingly.
B1
+(P) -(N)
+(P) -(N)
+(P) -(N)
VFD
+(P) -(N)
Vibration
2m/s2 (0.2G) at 20~50Hz
VFDB
2015
VFDB
2015
O.L.
O.L.
VFDB
2015
Braking
Unit
VFDB
2015
O.L.
O.L.
VFD
Series
Braking
Unit
Braking
Mechanical Configuration
Wall-mounted enclosed type IP50
Series
Braking
Unit
Unit
VFD300_23_
SLAVE
VFD370_23_
SLAVE
MASTER
B2
M1 M2
B2
S1 S2
MASTER
B2
B2
S1 S2
Braking
Resistor
Braking
Resistor
Braking
Resistor
Braking
Resistor
M1 M2
VFD300_23_ use with two VFDB2015 braking units, and each braking unit uses with
2PCS BR1K5W005 braking resistors in series.
VFD370_23_ uses with two VFDB2015 braking units, and each braking unit uses with two
BR sets in parallel, which 2PCS BR1K2W008 braking resistors in series.
Z Dimensions -
VFDB Braking Units
[ Individual Parts and
_ The Voltage Settings
1. Regulation of power voltage: the power source of the braking unit is DC voltage from +(P), -(N) terminals of the AC motor drive. It is
very important to set the power voltage of the braking unit based on the input power of the AC motor drive before operation. The setting
has a great influence on the potential of the operation voltage for the braking unit. Please refer to the table below.
460V 20HP
460V 25HP/30HP/40HP
Function Explanation
Thermal Overload
Relay
Thermal Overload
Relay
121.0 [4.76]
B1
130.0 [5.12]
B1
Jumper for input
voltage setting
+(P)
-(N)
+(P)
-(N)
80.0 [3.15]
R3.3 [R0.13]
+(P)
VFDB
4030
Braking
Unit
+(P)
O.L.
VFDB
4030
Braking
Unit
O.L.
VFD
Series
VFD
Series
-(N)
-(N)
Braking
Unit
Table 1: The Selection of Power Voltage and Operation Potential of PN DC Voltage
VFD185_43_
VFD220_43_
VFD300_43_
SLAVE Circuit
Fault Circuit
CHARGE
REEN
ACT.
YELLOW
ERR.
RED
VFD150_43_
MASTER
G
Braking
Resistor
MASTER
B2
460V Model
AC Power
Voltage
575V Model
AC Power
Voltage
230V Model
AC Power
Voltage
Braking Start-up voltage
DC Bus (+(P), -(N)) Voltage
Braking Start-up voltage
DC Bus (+(P), -(N)) Voltage
Braking Start-up voltage
DC Bus (+(P), -(N)) Voltage
B2
VFD150_43_ uses with 1PCS BR1K5W040 braking resistor
1. VFD185_43_ uses with 4PCS BR1K2W008 braking resistors in series
2. VFD220_43_ uses with 4PCS BR1K2W6P8 braking resistors in series
3. VFD300_43_ uses with 4PCS BR1K5W005 braking resistors in series
190Vac
200Vac
210Vac
220Vac
230Vac
240Vac
330Vdc
345Vdc
360Vdc
380Vdc
400Vdc
415Vdc
380Vac
660Vdc
690Vdc
720Vdc
760Vdc
800Vdc
830Vdc
575Vac
950Vdc
460V 50HP/60HP
460V 75HP
Thermal Overload
Relay
Thermal Overload Relay
+(P) -(N)
400Vac
415Vac
440Vac
460Vac
480Vac
-
-
-
-
-
-
-
-
-
-
Thermal Overload Relay
B1
+(P) -(N)
+(P) -(N)
B1
B1
+(P)
-(N)
+(P)
-(N)
O.L.
VFDB
4045
Braking
Unit
VFDB
4030
Braking
Unit
VFDB
4030
O.L.
O.L.
VFD
Series
VFD
Series
Braking
Braking
Resistor
Unit
VFD370_43_
VFD450_43_
VFD550_43_
SLAVE
MASTER
MASTER
B2
S1 S2
B2
B2
M1 M2
NOTE: Input Power With Tolerance ±10%
Braking Resistor
1. VFD370_43_ uses with two BR sets in parallel, which 4PCS BR1K2W008
braking resistors in series for each BR set.
2. VFD450_43_ uses with two BR sets in parallel, which 4PCS BR1K2W6P8
braking resistors in series for each BR set.
Braking Resistor
VFD550_43_ uses with two VFDB4030 braking units, and each braking unit uses with
4PCS BR1K5W005 braking resistors in series.
Input voltage setting for VFDB-2015/2022/4030/4045
Input voltage setting for VFDB-5055
Braking Resistor
B1，B2
Power Input Circuit
+(P)，-(N)
460V 100HP
575V 20HP
ACT
CHARGE
ERR
ACT
Thermal Overload
Relay
CHARGE
ERR
Thermal Overload Relay
+(P) -(N) B1
Thermal Overload Relay
B1
Power lamp Braking lamp Fault lamp
B1
Power lamp Braking lamp Fault lamp
+(P) -(N)
+(P) -(N)
Input Voltage Setting
Braking
Resistor
Input Voltage Setting
+(P)
VFDSeries
-(N)
+(P)
-(N)
------
575V
------
------
------
------
480V
460V
440V
415V
400V
380V
240V
230V
220V
210V
200V
190V
VFDB
4045
Braking
Unit
VFDB
4045
O.L.
O.L.
O.L.
Terminal Wire Gauge
VFD
Series
VFDB
5055
Braking
Unit
Braking Unit
VFD750_43_
SLAVE
Circuit
Terminal Mark
+(P), -(N)
Wire Gauge AWG (mm2)
10~12AWG (3.5~5.5mm2)
10~12AWG (3.5~5.5mm2)
Screw
M4
Torque
MASTER
B2
M1 M2
B2
S1 S2
VFD150_53_
Braking
Resistor
Braking
Resistor
MASTER
For VFDB-2015/2022
Factory setting: 230V
For VFDB-4030/4045
Factory setting: 460V
B2
VFD150_53_ uses with 3PCS BR1K0W020 braking resistors in series
Power Input Circuit
Braking Resistor
18 kgf-cm (15.6 in-lbf)
18 kgf-cm (15.6 in-lbf)
For VFDB-5055 Series
Factory setting: 575V
VFD750_43_ uses with two VFDB4045 braking units, and each braking unit uses with two
BR sets in parallel, which 4PCS BR1K2W6P8 braking resistors in series.
B1, B2
M4
2. MASTER/SLAVE setting: The MASTER/SLAVE jumper is set “MASTER” as factory setting. The “SLAVE” setting is applied to two
or more braking units in parallel, making these braking units be enabled/disabled synchronously. Then the power dissipation of each unit
will be equivalent so that they can perform the braking function completely.
575V 25HP
575V 30HP/40HP/50HP
20~18AWG (0.25~0.75mm2)
(with shielded wires)
Output M1, M2
Thermal Overload
Relay
Thermal Overload
Relay
SLAVE Circuit
Fault Circuit
M2
M2
4 kgf-cm (3 in-lbf)
4 kgf-cm (3 in-lbf)
Braking
B1
Braking
B1
Input
S1, S2
Resistor
+(P)
VFDSeries
-(N)
+(P)
-(N)
resistor
+(P)
-(N)
+(P)
-(N)
The position of the jumper
O.L.
VFDB
5055
Braking
Unit
O.L.
VFDB
5055
RA, RB, RC
20~18AWG (0.25~0.75mm2)
VFD
Series
The SLAVE braking application of three braking units is
ACT
CHARGE
ERR
VFD220_53_
VFD300_53_
VFD370_53_
shown as the above diagram. After wiring, the jumper of
first unit shall be set as “MASTER” and that of others must
be set as “SLAVE” to complete the system installation.
Braking Unit
Slave
output/input
Terminal
Power lamp Braking lamp Fault lamp
MASTER
MASTER
VFD185_53_
B2
1. VFD220_53_ uses with 5PCS BR1K2W008 braking resistors in series
2. VFD300_53_ uses with 5PCS BR1K2W6P8 braking resistors in series
3. VFD370_53_ uses with 5PCS BR1K5W005 braking resistors in series
\ Basic Wiring Diagram
B2
VFD185_53_ uses with 5PCS BR1K0W050 braking resistors in series
------ 480V
575V 460V
------ 440V
------ 415V
------ 400V
------ 380V
240V
230V
220V
210V
200V
190V
Operation Explanation: 1. For safety consideration, install an overload relay between the braking unit and the braking resistor. In
conjunction with the magnetic contactor (MC) prior to the drive, it can perform complete protection against abnormality.
2. The purpose of installing the thermal overload relay is to protect the braking resistor from damage due to frequent braking, or due to
braking unit keeping operating resulted from unusual high input voltage. Under such circumstance, just turn off the power to prevent
damaging the braking resistor.
575V 60HP/75HP
575V 100HP
Thermal Overload
Relay
Thermal Overload
Thermal Overload
Relay
SLAVE
Relay
+(P) -(N)
+(P) -(N)
M1
+(P) -(N)
+(P) -(N)
B1
Braking
Resistor
+(P)
+(P)
-(N)
S1
S2
M1
M2
S1
S2
O.L.
+(P) -(N)
B1
+(P) -(N)
VFD
+(P) -(N)
VFDSeries
B1
M2
VFDB
5055
Braking Unit
-(N)
VFD
Series
M1: SLAVE output signal +
M2: SLAVE output signal -
S1: SLAVE input signal +
S2: SLAVE input signal -
VFDB
5055
VFDB
5055
Braking Unit
O.L.
O.L.
SLAVE
SLAVE
MASTER
3. Please refer to the specification of the thermal overload relay.
Braking Unit
Series
VFD450_53_
VFD550_53_
MASTER
B1 B2
MASTER/SLAVE
Setting Jumper
4. The alarm output terminals (RC, RA, RB) of the braking unit will be activated when the temperature of the heat sink exceeds 95oC. It
means that the temperature of the installation environment may exceed 50oC, or the braking %ED may exceed 10%ED. With this kind
of alarm, please install a fan to force air-cooling or reduce the environment temperature. If the condition not due to the temperature,
the control circuit or the temperature sensor may have been damaged. At this time, please send the braking unit back to the
manufacturer or agency for repair.
SLAVE
MASTER
VFD750_53_
B2
S1 S2
B2
MASTER
B1
O.L.
B2
BR
B1
O.L.
B2
BR
B2
M1 M2
1. VFD450_53_ uses with two BR sets in parallel, which 5PCS BR1K2W008 braking resistors
in series for each BR set
2. VFD550_53_ uses with two BR sets in parallel, which 5PCS BR1K2W6P8 braking resistors
in series for each BR set
Braking
Resistor
Braking
Resistor
NOTE: Please use shielded wires
while wiring.
BR
O.L.
VFD750_53_uses with two VFDB5055 braking units, and each braking unit uses with
5PCS BR1K5W005 braking resistors in series.
Alarm output terminals
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