February 2008
P/N 32-0228
REV . B
INSTALLATION, OPERATION & MAINTENANCE INSTRUCTIONS
FOR
FP-4 FREEZE PROTECTION KIT
P/N 83-0763
FOR TURBO-COOL AFTERCOOLERS
MODELS AC-140-7 thru AC-220-7
(230V-3PH-60Hz & 460V-3PH-60Hz)
WARNING
BEFORE STARTING INSTALLATION OR MAINTENANCE PROCEDURES, TURN OFF ELECTRICAL POWER AND
COMPLETELY DEPRESSURIZE THE AFTERCOOLER. FAILURE TO HEED THIS WARNING MAY RESULT IN SERIOUS
PERSONAL INJURY AND/OR DAMAGE TO THE UNIT.
NEVER REMOVE, REPAIR, OR REPLACE ANY ITEM ON THE AFTERCOOLER WHILE IT IS PRESSURIZED.
WHEN INSTALLING THIS KIT, ALWAYS COMPLY WITH THE NATIONAL ELECTRICAL CODE AND ALL OTHER
APPLICABLE FEDERAL, STATE AND LOCAL CODES.
SECTION 1
INTRODUCTION
1.1DESCRIPTIONOFOPERATION
The FP-4 freeze protection kit is designed to prevent aftercooler freeze up when the ambient temperature is near or below
freezing, 32oF (0oC).
The FP-4 has a two stage solid state temperature controller. The controller is mounted inside a Nema 4 enclosure. The
controller is used to energize a control relay which is rated to handle the load of the aftercooler fan at the various voltages.
The linear platinum temperature sensor and
thermowell mount into the piping between the
outlet manifold of the aftercooler and the
separator. When the temperature of the com-
pressed air system at the aftercooler outlet falls
to 35OF, the controller will automatically turn off of
the fan. The controller is set for a 10oF dead
band to prevent rapid cycling (fan will turn off at
35OF and on at 45oF).
FIGURE 1-A ITEMS INCLUDED WITH THIS KIT
A 12 foot heat tape and 30 feet of insulation wrap
are provided to wrap around the separator. The
heat tape is equipped with its own internal
temperature control. The heat tape and insula-
tion will provide additional freeze up protection.
1.2 THIS KIT INCLUDES:
Control box
1.
12'long heat tape, w/ thermostat
30'long roll of insulation wrap
Copper 1/2" NPT thermowell w/clip
Cord grip connector
2.
3.
4.
5.
Linear platinum sensor
6.
2'of 3/8" flexible conduit
7.
Three (3) seal fittings for connectors
3/8" conduit straight connector
3/8" 90 degree elbow connector
1" x 1/2" NPT bushing
Four (4) #12-14 x 1" self tapping screws
Heat Condictive Compound
8.
9.
10.
11.
12.
13.
PAGE 1
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SECTION 2
INSTALLATION
2.4 INSTALLING THE CONDUIT
Install the straight conduit connector
on the control box. Reference Figure
2-D.
FIGURE 2-D INSTALLING THE CONDUIT
The supplied conduit will be used to
run between the aftercooler and the
control box. Connect the conduit to
the straight connector.
Install the 90 degree elbow connector
on the aftercooler. Reference Figure
2-D.
2.5 INSTALLING THE TRANSFORMER JUMPERS
WARNING
FIGURE 2-E INSTALLING THE TRANSFORMER JUMPERS
BEFORE STARTING THIS PROCEDURE, TURN OFF
ELECTRICAL POWER. FAILURE TO HEED THIS
WARNING MAY RESULT IN SERIOUS PERSONAL
INJURY AND/OR DAMAGE TO THE UNIT.
This kit was designed to operate at 230V-3PH-60Hz or
460V-3PH-60Hz. Two jumpers were shipped inside the
control box. They must be installed on the transformer
before connecting the power to the control box. Install the
jumper(s) as shown in Figure 2-E for the desired voltage.
CAUTION
It is important that this procedure be properly
completed before continuing with installation.
This kit will not operate without the jumpers.
Damage to the control box will occur if the jumpers
are improperly installed.
2.6 ELECTRICALCONNECTIONS
WARNING
conduit to the connector on the aftercooler. Reference
FIGURE 2-D.
BEFORE STARTING INSTALLATION PROCEDURES
OR ATTEMPTING TO MAKE ANY WIRING CHANGES,
TURN OFF ELECTRICAL POWER. FAILURE TO HEED
THIS WARNING MAY RESULT IN SERIOUS
Make the wire connections at the junction box on the
aftercooler. Reference FIGURE 2-F. Fasten the junction box
cover to the aftercooler.
PERSONAL INJURY AND/OR DAMAGE TO THE UNIT.
Complete the wire connections inside the controller as
shown in FIGURE 2-F.
WHEN INSTALLING THIS KIT ALWAYS COMPLY WITH
THE NATIONAL ELECTRICAL CODE AND ALL OTHER
APPLICABLE FEDERAL, STATE AND LOCAL CODES.
Once all wiring connections have been properly made, the
rotation of the fan should be checked. The fan must rotate in
the proper direction for maximum performance. Reference
the operator's manual supplied with the aftercooler for the
correct rotation direction. Also, check the aftercooler for a
rotation direction label.
A 7/8" hole in the top right side of the control box is provided
for incoming power conduit. The hole can be enlarged if
necessary.
The control box is designed for 230V-3PH-60Hz or 460V-
3PH-60Hz operation. The transformer jumpers must be
installed as outlined in Section 2.5 for the desired voltage.
To check the rotation, turn on the power supply to the
aftercooler. If the fan does not rotate in the proper direction,
any two of the power leads to the motor can be switched.
Make the necessary wiring runs and connections for the
main power supply.
Remove the junction box cover on the aftercooler for access
to the junction box. Make the necessary wiring runs through
the conduit from the aftercooler to the control box. Fasten the
PAGE 3
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SECTION 2
INSTALLATION
FIGURE 2-F CONTROL BOX COMPONENT LAYOUT and WIRING DIAGRAM
IMPORTANT
THE FAN MOTOR MUST ROTATE IN THE CORRECT DIRECTION. REFERENCE THE AFTERCOOLER
OPERATOR'S MANUAL FOR PROPER ROATION DIRECTION. IF IT DOES NOT, THE ROTATION CAN BE
CORRECTED BY SWITCHING TWO OF THE POWER LEADS TO THE MOTOR.
PAGE 4
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SECTION 2
INSTALLATION
2.7 SETTING THE CONTROLLER
The controller was factory set for normal operation. The
factory settings are as follows:
FIGURE 2-G CONTROLLER DISPLAY
RELAY 1
SET POINT
DIFFERENTIAL
MODE
35OF
10OF
COOLING
Turn on the main power to the FP-4 control.
If the settings have been changed, set them to the factory
settings following the procedures below . The controller will
retain the setting if the power is disconnected.
PROGRAMMING PROCEDURES
1. Press MENU key, then press RIGHT arrow key three
times. Use the UP and DOWN arrow to select the
SETPOINT. Press the RIGHT arrow to store the setpoint in
memory.
2. Press the RIGHT arrow to set the DIFFERENTIAL. Use
the UP and DOWN arrow to set the differential. Press the
RIGHT arrow to store the differential in memory.
3. Press the RIGHT arrow key to set the HEATING / COOL-
ING mode. Use the UP or DOWN arrow to select the
desired mode. Press the RIGHT arrow to store the mode in
memory.
4. Press RIGHT arrow three times to exit the program mode.
SECTION 3
OPERATION
3.1 OPERATION
Once the kit is installed and set properly, just energize the
controller and it will operate automatically.
FIGURE 3-A OPERATION SEQUENCE
The controller will turn off half of the aftercooler fan when the
temperature of system air at the outlet of the aftercooler falls
to 35OF. The fan will turn on when the system temperature
rises to 45oF. Reference chart in Figure 3-A .
The heat tape is controlled by its own internal thermostat.
Power is supplied to the heat tape as long as the control box
is energized.
The temperature controller is equipped with a LCD display.
During normal operation when the fan are operating,
(temperature above set points) the sensor temperature and
RELAYS 1 ON will be displayed on the controller.
NOTE: The cover on the control box must be opened to view
the temperature controller display.
PAGE 5
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SECTION 4
TROUBLESHOOTING
4.1 TROUBLESHOOTING PROCEDURES
SOLUTIONS
PROBLEM
POSSIBLE CAUSES
Controller not set properly
1. Aftercooler fan motor
continues to operate,
system temperature
below 35OF.
Check the controller settings as outlined in Section 2.7. The
controller may be set in the heat mode or the set points set too
low. Set the controller to the recommended settings.
Control relay faulty
Check the control relay. Replace if faulty.
Check main electrical power source.
2. Aftercooler fan motor
not operating, system
temperature above
45OF.
No power to the control box
No power to the controller
Check the transformer. Make sure that the jumpers on the
transformer are properly installed. Reference Section 2.5.
Check the fuses on the transformer.
Controller not set properly
Controller failure
Check the controller settings as outlined in Section 2.7. The
controller may be set in the heat mode or the set points set too
high. Set the controller to the recommended settings.
Check the controller settings. If the controller is properly set, check
the main power source.
Check the controller display for error codes. Section 4.2 outlines
what the error codes indicate and the necessary steps.
Sensor failure
If the sensor is faulty a "--" will be displayed for the temperature on the
controller display. Refer to Section 4.2 for further details. If the
sensor is faulty, it must be replaced.
Control relay faulty
Check the control power at the relay coil. Check the relay for proper
operation. Replace if faulty.
4.2 CONTROLLER ERROR CODES
The controller display panel is used to display error codes in the event of problems with the controller. The four error codes
are listed below.
-- -SENSOR FAILURE
The "--" displayed for the temperature indicates that there is a problem with the sensor. The sensor is open or shorted.
All relays will be de-energized in the event of a sensor failure. If the sensor is damaged, it must be replaced.
EE-EEPROM FAILURE
The "EE" error code indicates that there is a problem with EEPROM. The values read back from the EEPROM are not
the same as what was written into the EEPROM. This error cannot be field repaired. The controller must be replaced.
-60°F or 270°F (-51°C or 132°C) Blinking - TEMPERATURE OUT OF RANGE
The temperature display blinks when the sensed temperature is outside of the display range, below -60°F (-51°C) or
above 270°F (132°C). The displayed value remains at the display limit and the controller continues to function unless
an open or shorted condition is detected.
BLINKINGRELAYSTATUS
This occurs when the Relay Minimum Off Time is active. The (ñ ) blinks while the relay's minimum off time is active.
PAGE 6
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SECTION 5
REPLACEMENT PARTS
5.1 REPLACEMENT PARTS
ITEM NO.
DESCRIPTION
QTY
PART NO.
1
2
3
4
5
6
7
8
9
11
12
13
14
15
16
17
18
19
20
21
22
23
12'LONG HEAT TAPE
30'ROLL OF INSULATION WRAP
1/2" NPT THERMOWELL w/CLIP
CORD GRIP CONNECTOR
SENSOR
1
1
1
2
1
2 FT
3
1
1
1
4
1
1
1
1
2
2
2
26-8151
26-0712
29-0325
26-5618
26-7186
26-0875
26-0883
26-1068
26-1078
14-0402
28-1286
26-7185
26-0919
26-5637
26-5336
26-5638
26-0380
26-0382
26-0384
26-0388
26-0686
26-5663
3/8" FLEXIBLE CONDUIT
SEAL FITTING FOR CONNECTOR
3/8" CONDUIT STRAIGHT CONNECTOR
3/8" 90O ELBOW CONDUIT CONNECTOR
1" X 1/2" NPT BUSHING
#12-14 x 1" SELF TAPPING SCREW
TEMPERATURE CONTROLLER
MOTOR RELAY
TRANSFORMER
1 AMP FUSE
.6 AMP FUSE
GRAY TERMINAL
YELLOW TERMINAL
GREEN TERMINAL
END CLAMP TERMINAL
JUMPER FOR TERMINAL
JUMPER FOR TRANSFORMER
2
2
2
2
PAGE 7
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SECTION 6
WARRANTY
PER VAN AIR TERMS AND CONDITIONS OF SALE
YOUR VAN AIR REPRESENTATIVE IS:
NAME:
COMPANY:
ADDRESS:
CITY:
STATE:
FAX:
ZIP:
PHONE:
ATTACH BUSINESS CARD HERE
2950 Mechanic Street
Lake City, PA 16423 USA
Phone: 800/840-9906
Service Fax: 814/774-0778
Order Entry Fax: 814/774-3482
MAKING COMPRESSED AIR AND GAS WORK BETTER SINCE 1944.
PAGE 8
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T775A/B/M Series 2000 Electronic
Stand-Alone Controllers
INSTALLATION INSTRUCTIONS
PRODUCT DESCRIPTION
The T775 electronic stand-alone controllers are the next
generation of commercial and agricultural controls
capable of remote sensing of temperature and providing
switched and/or proportional outputs to various types of
loads.
Five models have analog (modulating) outputs for
actuator and motor control, and NEMA-4 weatherproof
enclosures are available for wet environments.
IMPORTANT
Each T775A/B/M controller is an operating
control, not a limit or safety control. If used in
applications requiring safety or limit controls, a
separate safety or limit control device is
required.
Table 1. T775A/B/M Controller Configurations.
Analog
(Mod)
SPDT
Relay
Outputs Outputs Outputs Inputs Included Enclosure
Nbr of
Sensor Sensors
Controller
a
Floating
b
c
Model
Description
Replaces
T775A1001
T775A2009 Standard
T775B2016 Standard
T775B2024 Standard
T775B2032 Standard
T775B2040 Standard
1
2
4
2
4
None
None
None
None
None
None
1
2
2
2
2
1
1
1
1
1
NEMA 1
NEMA 4X
NEMA 4X
NEMA 1
NEMA 1
N/A
1
2
1
2
T775C1009 T775D1008
T775A1019 T775B1000
T775A1027 T775A1035
T775B1018 T775B1026
T775B1042
T775M2006 Modulating
N/A
None
4
2
2
N/A
N/A
2
1
1
NEMA 1
d
T775M2014 Modulating T775G1005 T775G1013
T775G1021 T775G1039
NEMA 4X
2
d
d
T775M2022 Modulating
N/A
2
4
2
2
N/A
N/A
1
1
NEMA 4X
NEMA 1
2
2
T775M2030 Modulating T775E1114 T775F1022
T775F1055 T775F1089
d
T775M2048 Modulating T775E1015 T775E1023
T775E1056 T775E1064
T775E1098
2
2
N/A
1
NEMA 1
2
a
b
c
d
All models include a digital input for use with the disable or setback option.
The modulating (analog) outputs are 4-20 mA, 0-10 Vdc, 2-10 Vdc, or Series 90 selectable.
Each floating output eliminates two SPDT relays.
These models can support a high/low modulating limit at Sensor B for temperature control at Sensor A.
E4436
62-0254-03
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T775A/B/M SERIES 2000 CONTROLLER
PRODUCT DESCRIPTION
Temperature Sensorsa
The controller accepts 1,097 Ohms PTC at 77°F (25°C):
Accessories
•
•
•
107324A – Bulb Holder, duct insertion
•
50021579-001 – Standard sensor (included with all
models except NEMA 4X models)
107408 – Heat Conductive Compound, 4 ounce
50001774-001 – Immersion Well, stainless steel 304,
1/2 in. threading
•
T775-SENS-WR – Water resistant with 5 foot leads
(included with NEMA 4X models)
•
•
•
T775-SENS-WT – Watertight with 6 foot lead
T775-SENS-OAT – Outdoor air temperature sensor
C7031D2003 – 5 inch immersion sensor with wiring
box (use immersion well; P/N 50001774-001)
C7031J2009 – 12 foot duct averaging sensor with
wiring box
•
•
•
C7046D1008 – 8 inch duct probe with mounting flange
C7100D1001 – 12 inch fast response, duct averaging
sensor with flange
•
C7130B1009 – Room mount sensor
a
See form 62-0265 – Temperature Sensors for the T775
Series 2000 Stand-alone Controller
Controller Dimensions
TOP
1 (25.5)
7/8 (22.5)
2 15/16 (74)
4 13/32 (112.1)
3 31/32 (101)
1/2 (12.4)
LEFT
RIGHT
4 1/16 (103.4)
1/64 (3.8)
8 5/32
(207.1)
7 23/32
(196)
4 1/16 (103.4)
2 11/16 (68.1)
2 13/16 (71.8)
FRONT VIEW
7/8 (22.5)
7/8 (22.5)
7/8 (22.5)
1 (25.5)
BOTTOM
M24279
Fig. 1. T775A/B/M dimensions in inches (mm).
62-0254–03
2
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BEFORE INSTALLATION
T775A/B/M SERIES 2000 CONTROLLER
The controller may be mounted in any orientation.
However, mounting in the orientation shown in Fig. 1
permits proper viewing of the LCD display and use of the
keypad.
BEFORE INSTALLATION
Review the “Specifications” on page 35 before
installing the controller.
NEMA 4 Enclosure Mounting
When Installing This Product
1. Read these instructions carefully. Failure to follow
them could damage the product or cause a hazard-
ous condition.
For models with NEMA 4 enclosures, ensure that
waterproof wire/conduit fittings are used at the knockouts
for all wiring attachments. See Fig. 7 on page 6 for
knockout locations.
2. Check ratings given in instructions and on the prod-
uct to ensure the product is suitable for your appli-
cation.
3. Installer must be a trained, experienced service
technician.
IMPORTANT
For NEMA 4 enclosures, be sure to cover and
seal all unused open knockouts.
4. After installation is complete, check out product
operation as provided in these instructions.
Temperature Sensor(s) Mounting and
Location
Temperature sensors may be located up to 1,000 feet
(304 m) from the T775A/B/M controller. See Table 3 on
page 10 for calibration guidelines.
INSTALLATION AND SETUP
The following installation procedures are typically
performed in the order listed:
The sensors may be mounted on a wall or panel for
sensing space temperature, strapped to a pipe or inserted
in an immersion well (see Fig. 2) for hot or cold water
sensing, or taped to a standard cap or bulb holder for duct
air sensing. To prevent moisture or condensation entering
the sensor through the lead wire holes, mount the sensor
with the lead wires exiting the bottom of the sensor.
1. Mounting — see “Mounting” below.
2. Wiring — see “Wiring” on this page.
3. Checkout — see page 10.
4. Programming — see page 13.
5. Scheduling (optional) — see page 30.
NOTES:
1.
Additional topics are:
The included sensor is not designed for very
wet applications. For immersion applications,
an immersion well is used.
Heat conductive compound must be used in
immersion wells.
•
•
•
•
•
Temperature sensor calibration begins on page 10.
Interface overview begins on page 11.
Setup (for advanced options) begins on page 17.
Summary menu begins on page 34.
Troubleshooting begins on page 34.
2.
3.
See “Temperature Sensors” on page 2 for this
type of installation.
MOUNTING
SENSOR
PLACED
IN WELL
USE HEAT
CONDUCTIVE
COMPOUND
This section describes the mounting procedures for the
controller and temperature sensor(s).
Controller Mounting
IMMERSION
WELL
1/2 NPT
IMPORTANT
Avoid mounting in areas where acid fumes or
other deteriorating vapors can attack the metal
parts of the controller circuit board, or in areas
where escaping gas or other explosive vapors
are present.
M24470
Fig. 2. Sensor inserted in immersion well.
NOTE: Multiple sensors may be parallel-series wired to
sense average temperatures in large spaces.
See Fig. 3 on page 4.
IMPORTANT
The controller must be mounted in a position that
allows clearance for wiring, servicing, and
removal.
WIRING
Use a screwdriver to pry out only the knockouts that you
will use.
All wiring must comply with applicable electrical codes
and ordinances, or as specified on installation wiring
diagrams. Controller wiring is terminated to the screw
terminal blocks located inside the device.
If mounting on DIN rail, be sure to remove the knockouts
before mounting. See “Controller Wiring” on page 5 and
Fig. 7 on page 6 for recommended knockout usage and
locations. If you do not use an opened knockout be sure
to cover it.
The remainder of this section describes the temperature
sensor wiring and the T775A/B/M controller wiring.
Mount the controller on any convenient interior location
using the four mounting holes provided on the back of the
enclosure using #6 or #8 screws (screws are not provided
and must be obtained separately). Use controller
dimensions in Fig. 1 on page 2 as a guide.
3
62-0254–03
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T775A/B/M SERIES 2000 CONTROLLER
WIRING
NOTE: Each T775 controller must be wired to its own
Wiring Connections Access
sensor(s). However, a benefit of the T775
controller’s accuracy is that there is no more
than a 2°F differential between any two T775
controllers.
To access the wiring connections, remove the two screws
on the left side of the enclosure and gently swing open the
top. Be careful to not stress the ribbon cables that
connect the keypad and LCD display to the controller
circuit board.
Multiple Parallel Sensors
Multiple sensors can be parallel-series wired to sense
average temperatures in large spaces. To maintain
control accuracy, the number of sensors to be parallel-
series wired must be of the n power (for example, 4, 9,
16, etc.). See Fig. 3.
Temperature Sensor Wiring
2
CAUTION
Electrical Shock Hazard.
Can short equipment circuitry.
Make sure that metal tube of sensor does not
short against T terminals in wall-mounted case.
SENSORS
IMPORTANT
Poor wiring practices can cause erratic readings
from the sensor. Avoid the following to ensure
proper operation:
•
•
•
•
•
•
Do not route the temperature sensor wiring with
building power wiring.
Do not locate the temperature sensor wiring next
to control contactors.
Do not locate the temperature sensor wiring near
electrical motors.
Do not locate the temperature sensor wiring near
welding equipment.
Make sure good mechanical connections are
made to both the sensor and the controller.
Do not mount the sensor with the lead wire end
pointing up in an area where condensation can
occur.
TO T775 CONNECTIONS (SENSOR A) OR (SENSOR B).
M24471
Fig. 3. Parallel-series wiring of sensors.
Temperature Sensor Wire Type and Size
Temperature sensors use standard AWG 18/2 unshielded
wire. For cable runs greater than 25 feet or where
electrical interference may be a problem, shielded cable
is recommended. See Fig. 4.
If any of the above conditions cannot be
avoided, use shielded cable.
Refer to “Temperature Sensor Calibration” on page 10 for
wire size selection where cable runs are longer than 25
feet.
SHIELDED
CABLE
T
T
SENSOR A
NOTE: SHIELDED CABLE MUST BE
CONNECTED TO AN EARTH
GROUND.
1
T
T
SENSOR B
HOWEVER, DO NOT GROUND
SHIELDED CABLE AT SENSOR END.
SHIELDED
CABLE
SENSOR
NOTE: TO MINIMIZE NOISE PICKUP,
MAKE SENSOR CONNECTION FROM
SHIELDED CABLE AS CLOSE AS
POSSIBLE TO SENSOR BODY.
SENSOR A AND SENSOR B TERMINAL WIRING IS POLARITY INSENSITIVE.
1
M24472
Fig. 4. Sensor wiring — showing shielded cable connection to Sensor A.
62-0254–03
4
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WIRING
T775A/B/M SERIES 2000 CONTROLLER
See Fig. 7 on page 6 for locating the appropriate power
input, remote sensors input, low voltage, contact closure,
and load output terminals.
Controller Wiring
Access to the terminals can be gained through standard
conduit knockouts (A through E in Fig. 7 on page 6)
located around the perimeter of the enclosure:
WARNING
Electrical Shock Hazard.
Can cause severe injury, death or property
damage.
•
Knockouts A and B should be used only for sensor and
low-voltage wiring.
Disconnect power supply before beginning wiring,
or making wiring connections, to prevent electrical
shock or equipment damage.
•
Knockouts C, D, and E can be used to gain access to
the load relay output terminals and 120/240 Vac power
wiring.
Controller Wiring Method
Wire the sensors and outputs, then wire the power
connection.
CAUTION
Do not use 24 Vac power to power any external
loads if 120 Vac or 240 Vac is used to power
the T775A/B/M controller.
Each terminal can accommodate the following gauges of
wire:
•
Single wire – from 14 AWG to 22 AWG solid or
stranded
Multiple wires – up to two 22 AWG stranded
CAUTION
A separate earth ground is required.
Equipment damage can result if the earth ground
is not connected. See Fig. 5 and Table 2 on
page 6.
•
For 24, 120, or 240 Vac power connections:
Single wire – from 14 to 18 AWG solid or stranded
Prepare wiring for the terminal blocks, as follows:
1. Strip 1/2 in. (13 mm) insulation from the conductor.
2. Cut a single wire to 3/16 in. (5 mm). Insert the wire
in the required terminal location and tighten the
screw.
3. If two or more wires are being inserted into one ter-
minal location, twist the wires together a minimum
of three turns before inserting them to ensure
proper electrical contact.
CAUTION
Equipment Damage Hazard.
Electrostatic discharge can short equipment
circuitry.
Ensure that you are properly grounded before
handling the unit.
4. Cut the twisted end of the wires to 3/16 in. (5 mm)
before inserting them into the terminal and tighten-
ing the screw.
5. Pull on each wire in all terminals to check for good
mechanical connection.
1. STRIP 1/2 IN. (13 MM)
1
FROM WIRES TO
BE ATTACHED AT
ONE TERMINAL.
1/2 (13)
2. TWIST WIRES
TOGETHER WITH
PLIERS (A MINIMUM
OF THREE TURNS).
W
C
+
2
NO HIGH VOLTAGE. CLASS 2 WIRING ONLY.
1
2
EARTH GROUND TERMINAL MUST BE CONNECTED
TO CONDUIT CLAMP LOCALLY.
M24296
Fig. 5. Earth Ground.
3. CUT TWISTED END OF WIRES
TO 3/16 IN. (5 MM) BEFORE INSERTING
INTO TERMINAL AND TIGHTENING SCREW.
THEN PULL ON EACH WIRE IN ALL
TERMINALS TO CHECK FOR
IMPORTANT
Poor wiring practices can cause erratic readings
from the sensor. To ensure proper operation,
ensure that good mechanical connections are
made to both the sensor and the controller.
GOOD MECHANICAL CONNECTION.
M24473
Fig. 6. Attaching two or more wires at terminal blocks.
IMPORTANT
When wiring the input power, only one source of
power can be applied to the T775A/B/M control-
ler (24 Vac or 120 Vac or 240 Vac).
5
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T775A/B/M SERIES 2000 CONTROLLER
WIRING APPLICATIONS (EXAMPLES)
Table 2. Description of Wiring
Terminal Connections. (Continued)
Controller Wiring Details
The wiring connection terminals are shown in Fig. 7 and
are described in Table 2.
Connection
Terminal Label
Input
Description
See Fig. 8 – Fig. 20 beginning on page 6 for typical
T775A/B/M wiring applications.
DI
+ -
Digital Input (dry
contact)
24 Vac Power
KNOCKOUT A
24V +
+
24 Vac Hot
Common
Ground
C
24 Vac Common
T
SENSOR A
B
R
T
MOD 1
b
–
+
Earth Ground
1
W
2
T
T
SENSOR B
120 or 240 Vac Power
B
MOD 2
–
+
R
120 Vac
Common
240 Vac
120
120 Vac Power
Common
W
COM
240
–
+
DIGITAL
INPUT
240 Vac Power
a
For Series 90 connections, you must insert a 340 Ohm
resistor across terminals R and W. See Fig. 17 on
page 8. The resistor is included with the controller.
KNOCKOUT B
b
A separate earth ground is required for all installations
regardless of the power source (24, 120, or 240 Vac).
See Fig. 5 on page 5.
POWER
3
C
+
24 VAC
OUTPUT
RELAY 3
OUTPUT
RELAY 4
POWER
NC
C
NO
NC
C
NO
WIRING APPLICATIONS
(EXAMPLES)
Fig. 8 – 20 illustrate typical controller wiring for various
applications.
120/240 VAC
OUTPUT
RELAY 2
NO
C
NC
OUTPUT
RELAY 1
NO
C
NC
KNOCKOUT C
KNOCKOUT D
SENSOR A
T
T
KNOCKOUT E
1
2
SENSORS A AND B USE THE TWO TT CONNECTIONS AND ARE
POLARITY INSENSITIVE.
FOR MOD 1 AND MOD 2 CURRENT (mA) OR VOLTAGE (VDC) OUTPUT,
USE SIGNAL (+) & COMMON (-).
FOR MOD 1 AND MOD 2 SERIES 90 OUTPUT, USE W, R, & B.
3
A SEPARATE EARTH GROUND IS REQUIRED FOR ANY POWER
SOURCE (24, 120, OR 240 VAC).
M24474
L1
(HOT)
Fig. 7. T775A/B/M terminal and feature locations.
24 VAC
NOTE: Refer to Table 1 on page 1 for the specific con-
figuration of sensors and outputs supported by
the model you are installing.
L2
C
+
NOTE: For NEMA 4 enclosures, use waterproof fittings
for wiring/conduit connections at knockouts.
LOAD 1
LOAD 2
NO
COM
Table 2. Description of Wiring
Terminal Connections.
NO
C
NO
C
NC
NC
Connection
Terminal Label
Sensors
Description
COM
NO
Sensor A
Sensor B
Temperature Sensor;
polarity insensitive
T T
M24475A
Fig. 8. Wiring for two-stage control – 24 Vac input and
24 Vac load.
Outputs
Relay 1
Relay 2
Relay 3
Relay 4
NO
COM
NC
120-240 Vac Relay
Output
Mod 1
Mod 2
+ - (Vdc or mA)
Modulating Output
a
W R B (Series 90)
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WIRING APPLICATIONS (EXAMPLES)
T775A/B/M SERIES 2000 CONTROLLER
SENSOR A
SENSOR A
T
T
T
T
L1
(HOT)
24 VAC
L2
C
+
120V
COM
C
+
1
NC
C
NO
NC
C
NO
LOAD
4
COM
NO
NC
C
NO
NC
C
NO
LOAD
3
COM
NO
NO
COM
NO
C
NC
NO
C
NC
LOAD
1
NO
COM
LOAD
2
NO
C
NC
NO
C
NC
COM
NO
LOAD
2
LOAD 1
LOAD 4
COM
NO
LOAD
3
M24476A
1
FOR 240 VAC LOAD, CONNECT TO 240 TERMINAL.
M24478A
Fig. 9. Wiring for four-stage control – 24 Vac input
and 24 Vac load.
Fig. 11. Wiring for four-stage control with 120 or 240
Vac (120 Vac input and 120 Vac load shown).
SENSOR A
120/240 VAC LINE
T
T
2
DEVICE
OPEN
1
NO
NO
C
NC
NO
C
NC
COM
COM
BARCODE
CLOSE
COM
NO
CLOSE RELAY TO DRIVE DEVICE OPEN. RELAY 1 SHOWN.
(RELAYS 1 AND 3 ARE USED FOR OPEN).
1
2
CLOSE RELAY TO DRIVE DEVICE CLOSED. RELAY 2 SHOWN.
(RELAYS 2 AND 4 ARE USED FOR CLOSE).
C
+
120V
COM
THE RELAYS MUST BE WIRED IN PAIRS WITH RELAYS 1 AND 2
BEING THE FIRST PAIR, AND RELAYS 3 AND 4 BEING THE SECOND PAIR.
M24479
1
L1 (HOT)
L2
POWER SUPPLY
Fig. 12. Wiring for floating output (Relay 1 and Relay 2
pair shown).
NO
COM
NO
C
NO
C
NO
LOAD 2
NC
NC
COM
LOAD 1
1
FOR 240 VAC LOAD, CONNECT TO 240 TERMINAL.
M24477A
Fig. 10. Wiring for two-stage control with 120 or 240
Vac (120 Vac input and 120 Vac load shown).
7
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T775A/B/M SERIES 2000 CONTROLLER
WIRING APPLICATIONS (EXAMPLES)
ML7984 ACTUATOR
T1 T2 B R W
HONEYWELL ELECTRONIC
SERIES 90 MODUTROL MOTOR
1
T1 T2 B R W
POWER
OUTPUT
2
POWER
OUTPUT
B
R
1
–
+
2
W
B
MODULATING OUTPUT
TERMINAL (MOD 1)
B
R
–
–
+
R
3
W
W
+
MODULATING
OUTPUT
B
R
–
TERMINAL
(MOD 1)
W
USE SEPARATE TRANSFORMER FOR T775R WHEN USING 24 VAC.
1
2
+
250 OHM RESISTOR
M24480
Fig. 13. Wiring for ML7984 valve actuator.
1
TO VERIFY OUTPUT, TEST OPEN CIRCUIT VOLTAGE BETWEEN
THE MOD 1 TERMINALS W AND R.
- MINIMUM (DRIVE CLOSED) SIGNAL LESS THAN 0.17 VDC
- MAXIMUM (DRIVE OPEN) SIGNAL IS GREATER THAN 1.7 VDC
2
3
USE SEPARATE TRANSFORMER FOR T775R WHEN USING 24 VAC.
INSERT 340 OHM RESISTOR (INCLUDED) ACROSS TERMINALS R AND W.
M24484
Fig. 17. Wiring for Series 90 Modutrol Motor Control.
–
+
DIGITAL
INPUT
HONEYWELL
ELECTRONIC SERIES 90
MODUTROL MOTOR
MINIMUM POSITION
POTENTIOMETER
(Q209)
SPDT CHANGEOVER
(H205 OR H705)
M24482
W
R
B
Fig. 14. Wiring for Digital Input (dry contact).
T1 T2 B R W
2
HONEYWELL MODUTROL MOTOR WITH
4-20 mA MODULATING INPUT
1
POWER
OUTPUT
T1 T2
–
+
B
–
+
R
W
MODULATING OUTPUT
TERMINAL (MOD 1)
B
3
POWER
OUTPUT
–
+
R
W
B
R
1
–
+
W
MODULATING OUTPUT
TERMINAL (MOD 1)
B
1
2
USE SEPARATE TRANSFORMER FOR T775R WHEN USING 24 VAC.
–
+
R
W
A 250 OHM RESISTOR PROVIDES 40% AUTHORITY WHEN
USING A 150 OHM MINIMUM POSITION POTENTIOMETER.
3
INSERT 340 OHM RESISTOR (INCLUDED) ACROSS TERMINALS R AND W.
M24485
USE SEPARATE TRANSFORMER FOR T775R WHEN USING 24 VAC.
M24481
1
Fig. 18. Wiring for changeover relay and
minimum position potentiometer used
with Series 90 Modutrol Motors.
Fig. 15. Wiring for mod motor or direct coupled
actuator with 4 to 20 mA control input.
HONEYWELL MODUTROL MOTOR WITH
VOLTAGE CONTROL INPUT
T1 T2
C
R
F
1
POWER
OUTPUT
B
R
–
+
W
MODULATING OUTPUT
TERMINAL (MOD 1)
B
–
+
R
W
1
USE SEPARATE TRANSFORMER FOR T775R WHEN USING 24 VAC.
M24483
Fig. 16. Wiring for mod motor or direct coupled
actuator with 0 to 10 Vdc control input.
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WIRING APPLICATIONS (EXAMPLES)
T775A/B/M SERIES 2000 CONTROLLER
1
M9184 OR M9185
MODUTROL MOTOR
L1
(HOT)
L2
R
TR
W
TR
B
B
2
M9184 OR M9185
MODUTROL MOTOR
–
+
R
3
W
B
R
–
+
R
TR
W
W
TR
B
M9184 OR M9185
MODUTROL MOTOR
MODULATING OUTPUT
TERMINAL (MOD 1)
R
TR
W
TR
B
1
2
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
USE A 1300 OHM RESISTOR FOR TWO MOTORS, 910 OHM RESISTOR FOR THREE MOTORS.
THE 407EAU RESISTOR KIT, WHICH IS SHIPPED WITH THE M9184 AND M9185 MOTORS,
INCLUDES BOTH RESISTORS.
INSERT 340 OHM RESISTOR (INCLUDED) ACROSS TERMINALS R AND W.
3
M24486
Fig. 19. Wiring for three Series 90 Modutrol Motors.
L1 (HOT)
4
L2
1
MINIMUM
6
2
M9184 OR M9185
POSITION
MODUTROL MOTOR
3
POTENTIOMETER
(Q209/S963)
R
TR
W
R
B
W
TR
B
B
R
9
–
+
2
W
M9184 OR M9185
MODUTROL MOTOR
B
–
+
R
R
W
TR
W
TR
CHANGEOVER
CONTROLLER
5
–
+
B
1
2
M9184 OR M9185
W
MODUTROL MOTOR
2
8
R
R
POWER
24 VAC
3
TR
B
W
TR
7
C
+
B
MODULATING OUTPUT TERMINAL (MOD 1)
1
2
3
4
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
UP TO SIX SIMILAR MOTORS CAN BE CONNECTED IN UNISON.
USE RESISTOR BETWEEN R AND B ON THE MOD 1 TERMINAL: 1300 OHMS FOR TWO MOTORS; 910 OHMS FOR THREE MOTORS (4074EAU KIT).
IF COMMON TRANSFORMER IS USED, ALL MOTORS MUST BE IN PHASE. CONNECT THE SAME TRANSFORMER LEAD TO T1 ON EACH MOTOR,
CONNECT THE OTHER TRANSFORMER LEAD TO T2 ON EACH MOTOR.
USE TEMPERATURE CONTROLLER SUCH AS H205 OR H705, OR T675A FOR CHANGEOVER CONTROL.
5
6
AUTHORITY OF MINIMUM POSITION POTENTIOMETER, IF USED, INCREASES WITH THE NUMBER OF MOTORS IN PARALLEL. WITH ONE MOTOR,
50% STROKE; WITH TWO MOTORS, 100% STROKE; WITH THREE MOTORS, 100% STROKE WITH 1/3 OF FULL POTENTIOMETER ROTATION.
7
REVERSING THE B AND W TERMINALS ON ONE OR MORE MOTORS WILL NOT AFFECT CONTROL PERFORMANCE ON THE OTHER MOTORS.
THE SYSTEM CAN BE CONFIGURED TO HAVE SOME MOTORS BE REVERSE ACTING AND OTHER MOTORS BE DIRECT ACTING.
USE SEPARATE TRANSFORMER FOR T775 WHEN POWERING FROM 24 VAC.
8
9
THE SYSTEM IS SHOWN CONNECTED FOR COOLING. FOR HEATING, REVERSE THE W AND B LEADS OF THE MODULATING OUTPUT ON THE
T775 CONTROLLER.
M24487
Fig. 20. Wiring for unison control of M9184 or M9185 Modutrol IV Motor using one minimum position
potentiometer for all motors.
9
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T775A/B/M SERIES 2000 CONTROLLER
CHECKOUT
CHECKOUT
Table 3. Temperature Sensor Calibration for
Resistance Loss due to Wire Length.
Inspect all wiring connections at the controller terminals,
and verify compliance with the installation wiring
diagrams.
Temperature Offset in
a
°F (Foot)
AWG
Rating
mΩ/ft
2.5
200 ft
0.46
0.72
1.16
1.86
2.92
500 ft
1.14
1.82
2.90
4.64
7.32
1,000 ft
2.28
14
16
18
20
22
WARNING
4.0
3.64
Electrical Shock Hazard.
Can cause severe injury, death or property
damage.
6.4
5.82
10.2
16.1
9.28
Disconnect power supply before beginning wiring
or making wiring connections, to prevent electrical
shock or equipment damage.
14.64
Temperature Offset in
a
If any wiring changes are required, first be sure to remove
power from the controller before starting work. Pay
particular attention to verifying the power connection (24,
120, or 240 Vac).
°C (Meter)
AWG
Rating
mΩ/m
8.3
100 m
200 m
0.86
1.38
2.18
3.48
5.48
300 m
14
16
18
20
22
0.44
0.68
1.10
1.74
2.74
1.30
2.06
3.28
5.22
8.22
13.2
21.0
33.5
52.8
After the controller is installed and wired, apply power.
Power Loss
The date and time settings are retained for 24 hours after
a power outage. After a power loss of more than 24 hours,
the date and time settings may need to be reentered. All
other settings are stored permanently.
a
This is the distance from the controller to the sensor
(already accounts for round trip distance).
Fig. 21 shows how sensor resistance varies with
temperature for a sensor having a positive temperature
coefficient (PTC) of 2.1 Ohms per degree F (3.85 Ohms
per degree C).
Temperature Sensor Calibration
As wire length increases, resistance increases and thus
the temperature reading increases. If necessary, calibrate
the sensor input by reducing the value by the amount
shown in the Table 3. For example, a wire run with 18
gauge wire of 1,000 feet, requires a calibration offset of
-6.0°F.
RESISTANCE (OHMS)
1489
1403
1317
1231
1145
IMPORTANT
If the calibration value in the table exceeds the
controller’s calibration limits of +/-10°F (+/-6°C),
you must use a heavier gauge wire.
For example, with a wire run of 1,000 feet you
must use 20 AWG wire or heavier in order to cal-
ibrate for wire loss within the limits of the control-
ler.
1059
973
887
801
1097 0.08 OHMS
AT 77°F (25°C)
1
See “2.2.2.2. CALIBRATE (the sensor)” on page 18 for
the instructions to enter the calibration value.
-40 -20
0
20 40 60 80 100 120 140 160 180 200 220
250 °F
-40 -30 -20 -10
0
10 20 30 40 50 60 70 80 90 100 110 120 °C
TEMPERATURE (DEGREES)
POSITIVE TEMPERATURE COEFFICIENT (PTC) OF 2.1 OHMS PER °F
1
M24304
Fig. 21. Sensor Resistance vs. Temperature.
62-0254–03
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INTERFACE OVERVIEW
T775A/B/M SERIES 2000 CONTROLLER
Menu Button
•
INTERFACE OVERVIEW
Pressing the MENU button always displays the
Program menu. If you are in Setup mode, you exit
setup and return to the Program menu.
Pressing and holding the MENU button for five
seconds leaves the current screen and displays
the Setup menu.
The T775A/B/M controllers use an LCD panel and
6-button keypad to provide status information and permit
user input of the programming, setup, and scheduling
parameters.
•
The following figure describes the display areas of the
LCD and the keypad.
Left and Right Arrow Buttons (W and X
Use these buttons to move backward (W) and forward (X)
through the Program and Setup menus.
)
HOME
Up and Down Arrow Buttons (S and T
Use these buttons to move your selection up and down
through a menu or list.
)
MENU AREA
RELAYS 1 2 3 4
ON
SENSORS
SENSOR A
78
SENSOR B
84
•
•
When the desired item is highlighted, you press the X
arrow button to display that item’s content.
When a value is displayed (e.g. 70°F), the up and
down arrows increase and decrease the value.
o
o
F
F
DATA AREA
LOCK ICON
NOTE: Once you select an item from a list or enter a
value, pressing the W or X or HOME button
accepts your selection or value and stores it in
the controller’s memory.
MOD1
MOD2
DI ON
40%
60%
Home Screen
In the normal run state, the LCD home screen displays
the current sensed temperatures, the modulating outputs
status, the active status of the output relays, and error and
status codes.
home
menu
6 BUTTON KEYPAD
M24488
Active relays are indicated by the small black square („)
just below the relay number. Fig. 23 shows the home
screen with relays 1, 2, and 4 energized.
Fig. 22. LCD Display - Home Screen And Keypad.
Pressing the W and X buttons from the home screen
cycles through each modulating output that is paired with
the sensor it controls and the active output relays.
Menu Area – On the home screen, the LCD displays the
configured relays and whether they are active. In
Program, Setup or Schedule mode, the LCD displays the
current menu selection and its order within the menu
hierarchy.
HOME
HOME
HOME
RELAYS
ON
1
2
3
4
RELAYS
ON
1
2
3
4
RELAYS
ON
1
2
3
4
Data Area – On the home screen, the LCD displays the
sensors and outputs status. In Setup or Program mode,
the LCD displays menu choices, parameter selections,
and data values.
SENSORS
MOD 1
40%
REL 1
ON
SENSOR A
COOL
HEAT
o
o
F
F
SETPOINT
SETPOINT
78
o
o
o
o
F
F
F
F
SENSOR B
74
60
SENSOR A
SENSOR A
84
62
62
Lock Icon – The icon indicates the MENU button is
locked and prevents access to the Setup and Program
menus.
RT 12345 HRS
MOD1
MOD2
40%
60%
MOD1
MOD2
40%
60%
MOD1
MOD2
40%
60%
NOTE: Pressing and holding the HOME and MENU but-
tons simultaneously for five seconds locks/
unlocks the MENU button.
DI ON
DI ON
DI ON
M24489
6-Button Keypad – The keypad is used to access the
menus and enter values (see “Using the LCD Panel
Interface”).
Fig. 23. LCD Display - Home Screen Displaying
Sensors, Active Relays, and Mod Outputs.
Using the LCD Panel Interface
The 6-button keypad is used to move through the menus
and enter or change parameter values.
NOTE: The modulating output home screen and the
relay home screen do not dynamically update
the active relay status, sensor values, and
modulating output percentages. The information
is a snapshot taken when you press the W or X
button to display the screen.
Home Button
Pressing the HOME button at any time exits the current
Programming or Setup display screen and returns to the
home screen as shown in Fig. 22 and Fig. 23.
IMPORTANT
After four minutes of inactivity (no buttons
pressed), the LCD display reverts to the home
screen display.
11
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62-0254–03
T775A/B/M SERIES 2000 CONTROLLER
INTERFACE OVERVIEW
Accessing the Menus
Menus are used for programming, scheduling, viewing the
summary settings, and setup of advanced options.
HOME
RELAYS
ON
1
2
3
4
SETUP
SENSORS
SENSORS
OUTPUTS
EXIT
SENSOR A
Programming, Scheduling, and Summary Menus
To access these menus from the home screen, press the
MENU button. See Fig. 24.
o
o
F
78
SENSOR B
84
F
MOD1
MOD2
DI ON
40%
60%
MENU DISPLAY WHEN
SCHEDULING IS SET
MENU DISPLAY WHEN
SCHEDULING IS NOT SET
HOME
RELAYS
ON
1
2
3
4
FIVE
SECONDS
home
menu
MENU
MENU
SENSORS
PROGRAM
SCHEDULE
SUMMARY
EXIT
PROGRAM
SENSOR A
EXIT
o
o
F
78
SENSOR B
M24491
84
F
Fig. 25. Setup Menu.
MOD1
MOD2
40%
60%
DI ON
Using the Menus
When you are working with the menus, use the:
home
menu
OR
• Left arrow button (W) to scroll backward through the
menus
M24490
• Right arrow button (X) to select the highlighted menu
item and display its content
Fig. 24. Menus.
• Up and Down arrow buttons (S and T) to scroll up
and down through a list of items or to increase or
decrease the value of a displayed parameter
Depending on whether scheduling is enabled or not, the
LCD displays one of two menus as shown in Fig. 24.
Scheduling is enabled from the Setup menu’s Output
settings (see “2.3.3.1. USE SCHED” on page 24).
NOTE: If you press the HOME button or there is no key-
pad activity for four minutes, you exit Program
mode and return to the home screen.
Setup Menu
To access the Setup menu, press and hold the MENU
button for five seconds. See Fig. 25.
If you press the MENU button, you exit and
return to the menu.
62-0254–03
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1. PROGRAMMING
T775A/B/M SERIES 2000 CONTROLLER
Setpoint High Limit
You can set a single irreversible setpoint high limit
maximum value, which is applied to all outputs.
1. PROGRAMMING
The controller must be programmed before being placed
into service.
Adjust the setpoint (at any output) to the desired
maximum setpoint. Then, simultaneously press the
home, W, and X buttons and continue to press all three
buttons for five seconds to set the setpoint high limit
maximum to this value.
IMPORTANT
During programming, the controller is live at all
times. For example, the contacts may open and
close when adjusting the setpoint.
NOTE: You must press all three buttons at exactly the
same time for this action to occur.
The Programming process uses a hierarchical menu
structure that is easy to use. You press the W and X
arrow buttons to move forward and backward through the
menus.
IMPORTANT
1. This action sets the maximum setpoint value of
all outputs to the setpoint high limit maximum.
2. Setting the high limit setpoint maximum is irre-
versible. If you perform the action inadvertently
and this setpoint adversely affects the control of
your system, you must replace the controller.
NOTES:
1.
The controller interface is intuitive. You may
find that you do not need the following proce-
dure instructions to program the controller.
You may want to use this procedure simply as
a reference to locate the particular option or
parameter of interest.
2.
The menus can display only those relays that
are defined in Setup (see “2.3.2. NBR OF
RELAYS” on page 24). For example, if you
configure only two relays, then only two
relays display on the appropriate menus.
If you press the HOME button or there is no
keypad activity for four minutes, you exit Pro-
gram mode and return to the home screen.
If you press the MENU button, you exit Pro-
gram mode and return to the menu.
3.
4.
Setpoint and Differential
The following describes the relationship between setpoint
and differential for heating and cooling. These settings are
programmed for each output relay.
Heating Mode Setpoint and Differential
In heating mode, the differential is below the setpoint. The
relay de-energizes when the temperature rises to the
setpoint. As the temperature drops to the setpoint minus
the differential, the relay energizes.
Cooling Mode Setpoint and Differential
In cooling mode, the differential is above the setpoint. The
relay de-energizes when the temperature falls to the
setpoint. As the temperature rises to the setpoint plus the
differential, the relay energizes.
13
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62-0254–03
T775A/B/M SERIES 2000 CONTROLLER
1. PROGRAMMING
When programming is complete, you may continue with
“3. Scheduling” on page 30 or, for advanced options,
continue with “2. Setup (Advanced Options)” on page 17.
Programming the T775A/B/M Controller
To program the controller, perform the following
procedures in the order listed:
1. Enter Program mode — see “1.1. Entering Program
Mode”
2. Program the Outputs — see “1.2. Program Menu for
Outputs” on page 14
1.1. Entering Program Mode
MENU
MENU
PROGRAM
PROGRAM
Press the MENU button, then select PROGRAM and
press the X button to view the Program menu.
OR
MENU
PROGRAM
MOD 1
MOD 2
RELAY 1
RELAY 2
RELAY 3
RELAY 4
EXIT
RELAY 1
RELAY 2
RELAY 3
RELAY 4
EXIT
Fig. 26 shows the Program menus for controllers with and
without Modulating Outputs.
NOTE: Modulating outputs are not available on the
T775A and T775B controller models.
M24492
Fig. 26. Program Menu.
MENU
1.2. Program Menu for Outputs
PROGRAM
RELAY 1
PROGRAM
RELAY 1
Press the MENU button, select PROGRAM, then select
RELAY 1 (or MOD 1) to view the parameters. Fig. 27
shows RELAY 1.
SETPOINT
DIFFRNTL
SENSOR
HEAT/COOL
SETBACK
EXIT
NOTE: For MOD 1 and 2, THROT RNG replaces
DIFFRNTL.
NOTE: The Setback parameter displays only if schedul-
ing is enabled (see Fig. 55 on page 24) or the DI
Option is set to Setback. (see Fig. 57 on
page 25).
M24493
Fig. 27. Program Menu Outputs.
Continue with “1.2.1. SETPOINT”.
MENU
PROGRAM
PROGRAM
1.2.1. SETPOINT
RELAY 1
SETPOINT
RELAY 1
SETPOINT
1. From the menu, use the S and T buttons to high-
light SETPOINT.
2. Press the X button to display the setpoint value.
3. Use the S and T buttons to increase/decrease the
desired setpoint temperature.
o
F
Default: 70°F (21°C)
70
Range: -40°F to 248°F (-40°C to 120°C)
4. Press the X button to accept the setpoint tempera-
ture and display the next option.
ENTER
SETPOINT
FOR
RELAY 1
M24494
Fig. 28. Program - Setpoint.
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1. PROGRAMMING
T775A/B/M SERIES 2000 CONTROLLER
MENU
PROGRAM
1.2.2. DIFFERENTIAL or THROTTLING RANGE
Differential is used for Relay outputs and Throttling Range
is used for Modulating outputs.
PROGRAM
RELAY 1
RELAY 1
DIFFRNTL
DIFFRNTL
1. From the menu, use the S and T buttons to high-
light THROT RNG or DIFFERNTL.
2. Press the X button to display the throttling range
value.
3. Use the S and T buttons to increase/decrease the
desired value.
Default: 20°F (-6.6°C)
Range: 1°F to 150°F (1°C to 66°C).
4. Press the X button to accept the value and display
the next option.
o
F
20
ENTER
DIFFERENTIAL
FOR
RELAY 1
M24495
Fig. 29. Program - Differential or Throttling Range.
In heating mode, the Differential is below the setpoint.
The relay de-energizes when the temperature rises to the
setpoint. As the temperature drops to the setpoint minus
the Differential, the relay energizes.
In cooling mode, the Differential is above the setpoint.
The relay de-energizes when the temperature falls to the
setpoint. As the temperature rises to the setpoint plus the
Differential, the relay energizes.
The Throttling Range brackets the setpoint setting, e.g., if
the setpoint is 72°F and the throttling range is 10°F, then
the effective throttling temperature range is 67°F to 77°F.
This applies to both modulating outputs and floating
outputs.
MENU
1.2.3. SENSOR
PROGRAM
RELAY 1
PROGRAM
RELAY 1
SENSOR
SENSOR
1. From the menu, use the S and T buttons to high-
light SENSOR.
2. Press the X button to display the sensor selections.
3. Use the S and T buttons to select Sensor A or B.
4. Press the X button to accept the highlighted sensor
and display the next option.
SENSOR A
SENSOR B
SELECT
SENSOR FOR
RELAY 1
M24496
Fig. 30. Program - Sensor.
MENU
1.2.4. HEAT/COOL
PROGRAM
RELAY 1
HEAT/COOL
PROGRAM
RELAY 1
HEAT/COOL
1. From the menu, use the S and T buttons to high-
light HEAT/COOL.
Default: HEAT
HEAT
COOL
2. Press the X button to display the heat and cool
selections.
3. Use the S and T buttons to select Heat or Cool.
4. Press the X button to accept the highlighted selec-
tion and display the next option.
SELECT
HEAT/COOL
FOR
RELAY 1
M24497
Fig. 31. Program - Heat/Cool.
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T775A/B/M SERIES 2000 CONTROLLER
1. PROGRAMMING
MENU
PROGRAM
RELAY 1
SETBACK
1.2.5. SETBACK
PROGRAM
RELAY 1
The Setback temperature option displays if scheduling is
enabled (see Fig. 55 on page 24) or the DI Option is set to
Setback. (see Fig. 57 on page 25).
SETBACK
This is the desired setpoint temperature that you want to
use during setback mode for this output. For example, if
your setpoint is 70°F and you want the temperature to
drop 10°F during setback mode, enter 60°F as the set-
point for this output.
o
F
60
ENTER
SETBACK
SETPOINT
FOR RELAY 1
1. From the menu, use the S and T buttons to high-
light SETBACK.
M24498
2. Use the S and T buttons to increase/decrease the
desired setpoint temperature.
Default: 60°F (16°C)
Fig. 32. Program - Setback.
Range: -40°F to 248°F (-40°C to 120°C)
3. Press the X button to accept the value and display
the menu.
1.2.6. Program Next Output (Mod or Relay)
For the next output (Mod or Relay), select the desired
output from the Program menu (see Fig. 26 on page 14).
Go to “1.2.1. SETPOINT” on page 14 to program the next
output.
When you finish programming the outputs, continue with
“1.2.7. Exiting Program Mode” on page 16.
1.2.7. Exiting Program Mode
Press the HOME button to leave programming mode and
return to the home screen.
MENU
PROGRAM
MOD 1
MOD 2
RELAY 1
RELAY 2
RELAY 3
RELAY 4
EXIT
This completes the programming procedure.
M24499
Fig. 33. Program - Exit.
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2. SETUP (ADVANCED OPTIONS)
T775A/B/M SERIES 2000 CONTROLLER
2. SETUP (ADVANCED OPTIONS)
Setup provides the ability to change the factory default
settings for the temperature sensors and outputs, to
enable/disable reset control, and to enable/disable
scheduling.
Once in Setup mode, you use the —
• Left arrow button(W) to scroll backward through the
Setup menus
• Right arrow button (X) to select the highlighted menu
item and display its content
NOTE: The controller interface is intuitive. You may find
that you do not need the following setup
instructions for the sensors and outputs. You
may want to use this procedure simply as a
reference to locate the particular option or
parameter of interest.
• Up and Down arrow buttons (S and T) to scroll up
and down through a list of items or to increase or
decrease the value of a displayed setup parameter
To change the controller’s sensors and output setup
parameters, perform the following procedures in the order
listed:
1. Enter Setup mode — see “2.1. Entering Setup
Mode”
2. Setup Sensors — see “2.2. Setting up the Sensors”
3. Setup Outputs — see “2.3. Setting up the Outputs”
on page 21
NOTES:
1.
2.
If you press the HOME button or there is no
keypad activity for four minutes, you exit
Setup mode and return to the home screen.
If you press the MENU button, you exit Setup
mode and return to the menu.
4. Exit Setup Mode — see “2.4. EXIT Setup Mode” on
page 29
Setup Procedure
The Setup process uses a hierarchical menu structure
that is easy to use. You press the W and X arrow buttons
to move forward and backward through the menus.
2.1. Entering Setup Mode
To enter Setup mode, press and hold the MENU button
for five seconds to display the Setup menu. See Fig. 25
on page 12.
NOTE: The menus can display only those relays that
are defined in Setup (see “2.3.2. NBR OF
RELAYS” on page 24). For example, if you con-
figure only two relays, then only two relays dis-
play on the appropriate menus.
2.2. Setting up the Sensors
SETUP
SETUP
SENSORS
SENSORS
1. From the Setup menu, use the S and T buttons to
highlight SENSORS.
2. Press the X button to display the Sensors menu.
# SENSORS
SENSOR A
SENSOR B
EXIT
M24500
Fig. 34. Setup - Sensors Menu.
2.2.1. Number of SENSORS
The value entered here determines the number of
sensors displayed on the home screen.
SETUP
SENSORS
# SENSORS
SETUP
SENSORS
# SENSORS
1. From the Sensors menu, highlight # SENSORS
then press the X button to display the number of
sensors.
2. Use the S and T buttons to enter the number of
sensors (1 or 2).
Default: 2
2
ENTER
NUMBER OF
SENSORS
3. Press the X button to accept the value and display
the SENSOR A selection.
M24501
Fig. 35. Setup - Sensors - Number of Sensors.
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T775A/B/M SERIES 2000 CONTROLLER
2. SETUP (ADVANCED OPTIONS)
2.2.2. SENSOR A
SETUP
SETUP
SENSORS
SENSOR A
SENSORS
SENSOR A
1. From the Sensors menu, highlight SENSOR A.
2. Press the X button to display the Sensor A selec-
tions.
UNITS
CALIBRATE
LABEL
EXIT
M24502
Fig. 36. Setup - Sensors - Sensor A Menu.
SETUP
SENSORS
SENSOR A
UNITS
SETUP
SENSORS
SENSOR A
UNITS
2.2.2.1. UNITS (°F or °C)
IMPORTANT
DEG F
DEG C
This is a global change and affects the unit
values for all temperature parameters on all
displays.
The UNITS screen displays only for Sensor A.
1. From the Sensor A selections, use the S and T
buttons to highlight UNITS.
2. Press the X button to display the temperature units.
3. Use the S and T buttons to highlight F or C.
Default: F (Fahrenheit)
SELECT
UNITS FOR
SENSOR A
M24503
Fig. 37. Setup - Sensors - Sensor A - Units.
4. Press the X button to accept the units and return to
the Sensor A selections.
SETUP
SENSORS
SENSOR A
CALIBRATE
SETUP
2.2.2.2. CALIBRATE (the sensor)
Ensure that the wire size calibration value is within the
limits. See “Temperature Sensor Calibration” on page 10.
SENSORS
SENSOR A
CALIBRATE
1. From the Sensor A selections, use the S and T
buttons to highlight CALIBRATE.
2. Press the X button to display the calibration degree
value.
3. Use the S and T buttons to increase/decrease the
desired calibration degrees.
Default: 0.0
Range: +/-10°F (+/-6°C)
4. Press the X button to accept the value and return to
the Sensor A selections.
o
F
0.0
ENTER
VALUE TO
CALIBRATE
SENSOR A
M24504
Fig. 38. Setup - Sensors - Sensor A - Calibrate.
SETUP
SETUP
SENSORS
2.2.2.3. LABEL (the sensor input)
For a sensor already labeled, the display positions to and
highlights that label.
SENSORS
SENSOR A
SENSOR A
LABEL
LABEL
SENSOR A
1. From the Sensor A selections, use the S and T
buttons to highlight LABEL.
2. Press the X button to display the label list.
3. Use the S and T buttons to scroll through list and
highlight the desired label.
BOILER A
OUTDOOR A
DUCT A
DISCHRG A
CHILLER A
ROOM A
You may need to scroll up or down to view all possi-
ble labels.
4. Use the X button to accept the highlighted label
and exit the list.
SELECT
LABEL FOR
SENSOR A
M24505
Fig. 39. Setup - Sensors - Sensor A - Label.
NOTE: The label names in list order are: Sensor, Boiler,
Outdoor, Duct, Dischrg, Chiller, Room, Supply,
Return, and Animals.
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2. SETUP (ADVANCED OPTIONS)
T775A/B/M SERIES 2000 CONTROLLER
SETUP
2.2.2.4. Exit Sensor A Setup
Press the W button to exit Sensor A selections and return
to the Sensors menu.
or
Use the S and T buttons to highlight EXIT and press the
X button.
SENSORS
SENSOR A
UNITS
CALIBRATE
LABEL
EXIT
M24506
Fig. 40. Setup - Sensors - Sensor A - Exit.
2.2.3. SENSOR B
SETUP
SENSORS
SETUP
For the T775M2030 and T775M2048 models only, which
have a High/Low modulating temperature limit, the LIMIT
item displays on the Sensor B menu.
SENSORS
# SENSORS
SENSOR A
SENSOR B
EXIT
SETUP
SENSORS
SENSOR B
1. From the Sensors menu, use the T button to high-
light SENSOR B.
2. Press the X button to display the Sensor B menu.
CALIBRATE
LABEL
LIMIT
EXIT
M24507
Fig. 41. Setup - Sensors - Sensor B Menu.
2.2.3.1. CALIBRATE
Setting the calibration value is accomplished the same
way as the Sensor A. See “2.2.2.2. CALIBRATE (the
sensor)” on page 18 above.
2.2.3.2. LABEL
Setting the label is accomplished the same way as the
Sensor A. See “2.2.2.3. LABEL (the sensor input)” on
page 18 above.
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62-0254–03
T775A/B/M SERIES 2000 CONTROLLER
2. SETUP (ADVANCED OPTIONS)
SETUP
SETUP
SENSORS
SENSOR
LIMIT
2.2.4. LIMIT (Sensor B only)
For the T775M2030 and T775M2048 models only, the
LIMIT item displays on the Sensor B menu.
SENSORS
B
SENSOR
LIMIT
B
DISABLE
HI LIMIT
NOTE: The LIMIT option acts only on Modulating
Output 1.
LOW LIMIT
1. From the Sensors menu, use the T button to high-
light SENSOR B.
SELECT
2. Press the X button to display the Sensor B menu.
3. Use the S and T buttons to select the LIMIT item.
4. Use the X button to display the Limit selections.
5. Use the S and T buttons to select the desired limit,
(Disable, Hi Limit, or Low Limit).
HI/LOW
LIMIT FOR
SENSOR B
M24508
Fig. 42. Setup - Sensors - Sensor B - Limit.
Default: Disable
6. Press the X button to accept the value and return to
the Sensor B menu.
When you select Hi Limit or Low Limit, the Sensor B menu
changes and adds the Hi/Low Limit and Throttling Range
items.
If you are setting a Hi or Low Limit, continue with “2.2.4.1.
HI LIMIT or LOW LIMIT (Sensor B only)”.
If you selected Disable for the Limit value, continue with
“2.3. Setting up the Outputs” on page 21.
SETUP
SENSORS
SENSOR
2.2.4.1. HI LIMIT or LOW LIMIT (Sensor B only)
SETUP
SENSORS
SENSOR B
Fig. 43 shows the Hi Limit (Heat mode), but the process is
the same for setting the Low Limit (Cool mode). For
proper operation, the high limit should be used only in the
Heat mode, and the low limit only in the Cool mode.
B
UNITS
CALIBRATE
LABEL
SETUP
SENSORS
SENSOR B
HI LIM
LIMIT
HI LIMIT
THROT RNG
EXIT
Sensor B can be assigned a high/low limit, so that as you
are controlling temperature at Sensor A, the control
adjusts its modulating output to prevent exceeding the
user-entered limit for Sensor B.
o
F
90
ENTER
VALUE FOR
SENSOR B
HI LIMIT
1. From the Sensor B menu, use the T button to high-
light HI LIMIT or LOW LIMIT.
2. Press the X button display the LIMIT value.
3. Use the S and T buttons to increase/decrease the
desired Limit value.
M24509
4. Press the X button to accept the value and return to
the Limit menu.
Fig. 43. Setup - Sensors - Sensor B - Hi/Low Limit
(showing Hi Limit).
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2. SETUP (ADVANCED OPTIONS)
T775A/B/M SERIES 2000 CONTROLLER
SETUP
SENSORS
SENSOR
SETUP
2.2.4.2. THROTTLING RANGE (Sensor B only)
SENSORS
SENSOR B
The throttling range for the modulating high or low limit
positions the setpoint at the end of the throttling range.
For example, with a high (Heat) limit at Sensor B of 200°F
and a throttling range of 10°F, the modulating output
controlling Sensor A begins to throttle back at 190°F, and
fully closes at 200°F. Conversely, the throttling range for
the low limit begins above the Cooling setpoint in the
same manner.
B
UNITS
CALIBRATE
LABEL
SETUP
SENSORS
SENSOR B
THROT RNG
LIMIT
HI LIMIT
THROT RNG
EXIT
1. From the Limit menu, use the T button to highlight
THROT RNG.
2. Use the S and T buttons to increase/decrease the
desired value for the Throttling Range.
Default = 0
o
F
10
ENTER
VALUE FOR
SENSOR B
THROTLING
RANGE
3. Press the X button to accept the value and return to
the Limit menu.
M24510
4. Press the W button to exit the Limit menu.
5. Press the W button to exit the Sensors menu and
return to the Setup menu.
Fig. 44. Setup - Sensors - Sensor B - Throttling
Range.
2.3. Setting up the Outputs
SETUP
OUTPUTS
SETUP
OUTPUTS
1. From the Setup menu, use the Sand T buttons to
highlight OUTPUTS.
2. Press the X button to display the Outputs menu.
MOD 1
MOD 2
# RELAYS
OPTIONS
RELAY 1
RELAY 2
RELAY 3
RELAY 4
EXIT
NOTE: The menus (e.g. the Outputs menu shown here)
can display only those relays that are defined in
Setup (see page 24). For example, if you config-
ure only two relays, then only two relays display
on the appropriate menus.
M24511
The following procedures set up each modulating output
and relay output.
Fig. 45. Setup - Outputs Menu.
SETUP
OUTPUTS
MOD 1
SETUP
OUTPUTS
MOD 1
2.3.1. Setting up the Modulating Outputs
1. From the Output menu, use the S and T buttons to
highlight the desired modulating output (MOD 1 or
MOD 2).
2. Press the X button to display the selected MOD
menu.
TYPE
MIN OUT %
INTEGRAL
DERIVATIV
SCHEDULE
RESET
EXIT
NOTE: Modulating outputs are not available on the
T775A and T775B controller models. If you are
setting up one of these controllers, skip to “2.3.2.
NBR OF RELAYS” on page 24.
M24512
Use the remaining procedures, beginning with “2.3.1.1.
TYPE (of output signal)”, to set up each modulating
output. If you have two modulating outputs, repeat these
procedures for each modulating output.
Fig. 46. Setup - Outputs - Modulating Output Menu.
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T775A/B/M SERIES 2000 CONTROLLER
2. SETUP (ADVANCED OPTIONS)
SETUP
OUTPUTS
MOD 1
TYPE
SETUP
OUTPUTS
MOD 1
2.3.1.1. TYPE (of output signal)
TYPE
1. From the Mod menu, use the S and T buttons to
highlight TYPE.
2. Press the X button to display the Type selections.
3. Use the Sand T buttons to highlight the desired
output type.
4 - 20 mA
0-10 V
2-10 V
SERIES 90
Default: 4-20 mA
4. Press the X button to accept the selected type and
return to the Mod menu.
SELECT
TYPE FOR
MOD 1
M24513
Fig. 47. Setup - Outputs - Mod Out - Type.
SETUP
OUTPUTS
MOD 1
MIN OUT %
SETUP
OUTPUTS
MOD 1
2.3.1.2. MIN OUT %
The minimum output % prevents the output from dropping
below the value entered. This value can be useful to
maintain minimum damper position.
MIN OUT %
Using the time clock or digital input to disable the output
forces the output to 0%.
%
0
1. From the Mod menu, use the S and T buttons to
highlight MIN OUT %.
ENTER
MINIMUM
PERCENT FOR
MOD 1
2. Press the X button to display the Min Out %.
3. Use the S and T buttons to increase/decrease the
desired value from 0% to 100% in 1% increments.
Default: 0%
Range: 0 to 100%
4. Press the X button to accept the percentage and
return to the Mod menu.
M24514
Fig. 48. Setup - Outputs - Mod Out - Minimum Output
Percentage.
SETUP
OUTPUTS
MOD 1
INTEGRAL
SETUP
OUTPUTS
MOD 1
2.3.1.3. INTEGRAL
INTEGRAL
1. From the Mod menu, use the S and T buttons to
highlight INTEGRAL.
2. Press the X button to display the Integral seconds.
3. Use the S and T buttons to increase/decrease the
value from 0 to 3,600 in 10 second increments.
Default: 400 seconds
Range: 0 to 3,600 seconds
4. Press the X button to accept the seconds and
return to the Mod menu.
SEC
400
ENTER
INTEGRAL
TIME FOR
MOD 1
M24515
Fig. 49. Setup - Outputs - Mod Out - Integral.
NOTES:
1. The Integral time is factory set for 400 seconds. This
is a good middle range and should satisfy many
applications. The integral time can be increased for
applications where sensed response is slow, and can
be decreased for applications where sensed
3. Keep in mind that control is most sensitive to
throttling range. Adjust the throttling range first
before any adjustment to integral time. Adjust
throttling range to be as wide as possible to start
since this will provide the most stable control.
Remember that the integral will eliminate the steady
state error so you do not need to have a small
throttling range to have accurate control. (Integral
action allows for controlling to a setpoint even with a
wide throttling range).
response is fast (e.g. discharge air control).
2. As a starting point, an optimal integral time for
discharge air typically ranges from 12 to 200
seconds. An optimal integral time for room control
typically ranges from 60 to 2,500 seconds. The
purpose of integral action is to reduce or eliminate
the offset from setpoint during steady state control
that is often seen in proportional only control.
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2. SETUP (ADVANCED OPTIONS)
T775A/B/M SERIES 2000 CONTROLLER
SETUP
SETUP
OUTPUTS
MOD 1
2.3.1.4. DERIVATIVE
OUTPUTS
MOD 1
The Derivative default value is factory set to zero (no
derivative control). It is strongly recommended that the
derivative remain at zero (0) unless you have a very good
reason to adjust it. Derivative control is not needed in the
vast majority of HVAC applications.
DERIVATIV
DERIVATIV
SEC
0
1. From the Mod menu, use the S and T buttons to
highlight DERIVATIV.
2. Press the X button to display the Derivative sec-
onds.
3. Use the S and T buttons to increase/decrease the
value.
Default: 0 (zero)
ENTER
DERIVATIVE
TIME FOR
MOD 1
M24516
Fig. 50. Setup - Outputs - Mod Out - Derivative.
Range: 0 to 3,600 seconds
4. Press the X button to accept the seconds and
return to the Mod menu.
SETUP
OUTPUTS
MOD 1
SCHEDULE
SETUP
OUTPUTS
MOD 1
2.3.1.5. SCHEDULE
The Schedule option displays only if the USE SCHED
parameter is set to Yes (see page 24).
1. From the Mod menu, use the S and T buttons to
highlight SCHEDULE.
SCHEDULE
YES
NO
2. Use the S and T buttons to highlight YES or NO.
Default: YES
3. Press the X button to accept the selection and
return to the Mod menu.
USE
SCHEDULE
FOR
Each output can be set up to follow or ignore the built in
scheduler. To disable the scheduler for all outputs, see
“2.3.3.1. USE SCHED” on page 24.
OUTPUTS
M24517
Fig. 51. Setup - Outputs - Mod Out - Schedule.
SETUP
OUTPUTS
MOD 1
2.3.1.6. EXIT
Press the W button (or highlight EXIT and press the X
button) to exit the Mod menu and return to the Outputs
menu.
TYPE
MIN OUT %
INTEGRAL
DERIVATIV
SCHEDULE
EXIT
If you have a second modulating output to configure, go to
“2.3.1. Setting up the Modulating Outputs” on page 21.
If you are finished setting up the modulating outputs,
continue with “2.3.2. NBR OF RELAYS”.
M24518
Fig. 52. Setup - Outputs - Mod Out - Exit.
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T775A/B/M SERIES 2000 CONTROLLER
2. SETUP (ADVANCED OPTIONS)
2.3.2. NBR OF RELAYS
SETUP
OUTPUTS
# RELAYS
SETUP
OUTPUTS
# RELAYS
1. From the Outputs menu, use the Sand T buttons
to highlight # RELAYS.
2. Press the X button to display the number of relays.
3. Use the S and T buttons to display the number
from 1 to 4 depending on the model. (See notes
below.)
4. Press the X button to accept the value and display
the Outputs menu.
4
ENTER
NUMBER OF
RELAYS
NOTES:
1.
M24519
The T775A/B/M models have the following
outputs available:
T775A2019 1 relay output
Fig. 53. Setup - Outputs - Number of Relays.
T775B2016 up to 2 relay outputs
T775B2024 up to 4 relay outputs
T775B2032 up to 2 relay outputs
T775B2040 up to 4 relay outputs
T775M2006 no relay outputs
T775M2014 up to 4 relay outputs
The number of relay outputs entered here
determines how many relays display on the
home screen.
2.
SETUP
SETUP
2.3.3. OPTIONS
OUTPUTS
OPTIONS
OUTPUTS
OPTIONS
1. From the Outputs menu, use the Sand T buttons
to highlight OPTIONS.
2. Press the X button to display the Options menu.
USE SCHED
MIN OFF
DI OPTS
SHOW RT
EXIT
M24520
Fig. 54. Setup - Outputs - Options Menu.
SETUP
SETUP
OUTPUTS
OUTPUTS
2.3.3.1. USE SCHED
OPTIONS
OPTIONS
USE SCHED
USE SCHED
1. Press the X button to display the schedule selec-
tions.
2. Use the Sand T buttons to highlight YES or NO.
Default: NO
YES
NO
3. Press the X button to accept the value and display
the MIN OFF option.
USE
SCHEDULE
FOR
Selecting NO disables scheduling for all outputs.
Selecting YES enables scheduling for all outputs. When
YES is selected, all individual outputs default to follow the
schedule. However, each individual output can be
removed from scheduling as desired.
OUTPUTS
M24521
Fig. 55. Setup - Outputs - Options - Schedule.
With Scheduling enabled, when you return to Program
mode, the new option for Scheduling displays. You can
press the home key and then the menu key to view the
Schedule options in the menu.
See “2.3.1.5. SCHEDULE” on page 23.
62-0254–03
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2. SETUP (ADVANCED OPTIONS)
T775A/B/M SERIES 2000 CONTROLLER
SETUP
SETUP
OUTPUTS
OPTIONS
MIN OFF
2.3.3.2. MIN OFF (minimum off time for all relays)
This is the minimum number of seconds of “off time” for
all relays.
OUTPUTS
OPTIONS
MIN OFF
1. Press the X button to display the Min Off value.
2. Use the S and T buttons to increase/decrease the
desired number of seconds from 0 to 990 seconds
in 10 second increments.
Default: 0 (zero)
Range: 0 to 990 seconds
3. Press the X button to accept the seconds and
display the DI OPTIONS.
SEC
0
ENTER
MINIMUM
OFF TIME
FOR RELAYS
M24522
Fig. 56. Setup - Outputs - Options - Min Off Time.
NOTES:
1.
The minimum off time applies to all relay
outputs.
2.
When minimum off time is active, relays
waiting to be energized display a flashing
square underneath the relay number on the
home screen.
3.
If the minimum off time is not equal to zero
(0), the minimum off time activates at power-
up. To manually override, press the W button
at any time.
SETUP
SETUP
OUTPUTS
2.3.3.3. DI OPTIONS (digital input options)
OUTPUTS
OPTIONS
OPTIONS
DI OPTS
The DI Option you select applies to all outputs. This
option overrides any Setpoint/Setback values entered in
the Schedule.
DI OPTS
DISABLE
SETBACK
IGNORE
1. Press the X button to display the DI Option selec-
tions.
2. Use the S and T buttons to highlight DISABLE,
SETBACK, or IGNORE.
Default: DISABLE
3. Press the X button to accept the value and display
the SHOW RT option.
SELECT DI
OPTIONS
FOR
OUTPUTS
M24523
When the digital input (DI) closes, all outputs follow the DI
option value (Disable, Setback, or Ignore):
Fig. 57. Setup - Outputs - Options - DI Options.
•
DISABLE disables the outputs; relays return to de-
energized state and Mod outputs return to 0% output.
SETBACK enables a setback temperature value to be
programmed for each output.
•
—
To program the Setback temperature, see Fig. 32
on page 16.
IGNORE causes the digital input to have no effect on
•
the Relay or Mod outputs.
SETUP
OUTPUTS
OPTIONS
SHOW RT
SETUP
2.3.3.4. SHOW RT (show run time hours)
OUTPUTS
OPTIONS
SHOW RT
1. Press the X button to display the Show RT values.
2. Use the S and T buttons to select YES or NO.
Default: YES
YES
NO
3. Press the X button to accept the value and return to
the Options menu.
Selecting YES shows the RT (run time) hours for each
relay on the home screen displays.
USE
RUNTIME
FOR
NOTE: Run times can be reset to zero for each individ-
ual relay. You must do this for each relay that
you want to reset to zero. See “2.3.4.3. RESET
RT (run time hours)” on page 28.
RELAYS
M24524
Fig. 58. Setup - Outputs - Options - Show Runtime.
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62-0254–03
T775A/B/M SERIES 2000 CONTROLLER
2. SETUP (ADVANCED OPTIONS)
SETUP
2.3.3.5. Exit Options Setup
Press the W button (or highlight EXIT and press the X
button) to exit and return to the Outputs menu.
OUTPUTS
OPTIONS
USE SCHED
MIN OFF
DI OPTION
SHOW RT
EXIT
Continue with “2.3.4. Setting up the Relays”
M24525
Fig. 59. Setup - Outputs - Options - Exit.
SETUP
SETUP
2.3.4. Setting up the Relays
OUTPUTS
RELAY 1
OUTPUTS
RELAY 1
1. From the Outputs menu, use the S and T buttons
to highlight the desired relay (1-4 depending on
model).
2. Press the X button to display the selected relay
menu.
TYPE
SCHEDULE
RESET
RESET RT
EXIT
The TYPE selection shown in Fig. 60 displays only for
Relay 1 and Relay 3.
Continue with the remainder of section 3.4 to setup the
relay outputs.
M24526
Fig. 60. Setup - Outputs - Relay Menu.
SETUP
OUTPUTS
RELAY 1
TYPE
SETUP
OUTPUTS
RELAY 1
TYPE
2.3.4.1. TYPE (standard or floating)
The Floating option is only available on the T775B2016,
T775B2024, T775B2032, and T775B2040 models.
STANDARD
FLOATING
For these models, this selection displays only for Relay 1
and/or Relay 3.
1. Press the X button to display the Type values.
2. Use the S and T buttons to select STANDARD OR
FLOATING.
Default: STANDARD (not floating)
3. Press the X button to accept the value and return to
the Relay menu.
SELECT
TYPE FOR
RELAY 1
M24527
Fig. 61. Setup - Outputs - Relay - Type.
If you select FLOATING, the relays are paired (1-2 or 3-4)
and are setup together. Continue with “2.3.4.1.1. Floating
Relay Menu”.
If you select STANDARD, go to “2.3.4.2. SCHEDULE” on
page 28.
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2. SETUP (ADVANCED OPTIONS)
T775A/B/M SERIES 2000 CONTROLLER
SETUP
SETUP
OUTPUTS
FLOAT 1
2.3.4.1.1. Floating Relay Menu
The Floating option is only available on the T775B2016,
T775B2024, T775B2032, and T775B2040 models.
OUTPUTS
FLOAT 1
TYPE
ACTUATOR
INTEGRAL
DERIVATIV
SCHEDULE
RESET
When Relay 1 or Relay 3 is setup as floating, relays are
paired and the Float 1 or Float 2 menu displays with the
selections shown in Fig. 62.
EXIT
M24528
Fig. 62. Setup - Outputs - Floating Relay - Menu.
SETUP
OUTPUTS
FLOAT 1
ACTUATOR
SETUP
OUTPUTS
FLOAT 1
2.3.4.1.1.1. ACTUATOR (floating relay only)
The Actuator option displays only on the T775B2016,
T775B2024, T775B2032, and T775B2040 models when
the Type option = Floating.
ACTUATOR
1. From the menu, use the S and T buttons to high-
light ACTUATOR.
2. Press the X button to display the actuator value.
3. Use the S and T buttons to increase/decrease the
desired number of seconds.
SEC
90
ENTER
ACTUATOR
TIMING FOR
FLOAT 1
Default: 90 seconds
Range: 0 to 3,600 seconds)
M24529
4. Press the X button to accept the value and display
the INTEGRAL option.
Fig. 63. Setup - Outputs - Floating Relay - Actuator.
The actuator run time is defined as the time needed to
move the actuator from the fully closed to fully open
position and visa versa.
SETUP
OUTPUTS
FLOAT 1
INTEGRAL
SETUP
OUTPUTS
FLOAT 1
2.3.4.1.1.2. INTEGRAL (modulating/floating relay only)
The Actuator option displays only on the T775B2016,
T775B2024, T775B2032, and T775B2040 models when
the Type option = Floating.
INTEGRAL
1. From the menu, use the S and T buttons to high-
light INTEGRAL.
2. Press the X button to display the actuator value.
3. Use the S and T buttons to increase/decrease the
desired number of seconds.
SEC
400
ENTER
INTEGRAL
TIME FOR
FLOAT 1
Default: 400 seconds
Range: 0 to 3,600 seconds)
M24530
4. Press the X button to accept the value and display
the DERIVATIV option.
Fig. 64. Setup - Outputs - Floating Relay - Integral.
See Integral NOTES on page 22 for additional information
about setting the Integral time.
27
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T775A/B/M SERIES 2000 CONTROLLER
2. SETUP (ADVANCED OPTIONS)
SETUP
OUTPUTS
FLOAT 1
DERIVATIV
SETUP
OUTPUTS
FLOAT 1
2.3.4.1.1.3. DERIVATIVE (modulating/floating relay only)
The Derivative option displays only on the T775B2016,
T775B2024, T775B2032, and T775B2040 models when
the Type option = Floating.
DERIVATIV
1. From the menu, use the S and T buttons to high-
light DERIVATIV.
2. Press the X button to display the actuator value.
3. Use the S and T buttons to increase/decrease the
desired number of seconds.
SEC
0
ENTER
DERIVATIVE
TIME FOR
FLOAT 1
Default: 0 seconds
Range: 0 to 3,600 seconds)
M24531
4. Press the X button to accept the value and display
the SCHEDULE option.
Fig. 65. Setup - Outputs - Floating Relay - Derivative.
Continue with “2.3.4.2. SCHEDULE” for the remaining
relay selections.
SETUP
SETUP
OUTPUTS
2.3.4.2. SCHEDULE
OUTPUTS
RELAY 1
RELAY 1
SCHEDULE
This selection displays only if “Use Sched = YES” is
selected during the Output Options setup (see page 24).
When selected, individual outputs default to follow the
schedule.
SCHEDULE
YES
NO
1. Press the X button to display the Schedule values.
2. Use the S and T buttons to select YES or NO.
Default: YES
3. Press the X button to accept the value and return to
the Relay menu.
USE
SCHEDULE
FOR
OUTPUTS
M24532
An individual output can be selected to be controlled or
not controlled by the schedule.
Fig. 66. Setup - Outputs - Relay - Schedule.
If NO is selected, the Setback selection does not appear
in the Program menu for this output.
SETUP
SETUP
OUTPUTS
2.3.4.3. RESET RT (run time hours)
This selection displays only if “Show RT = YES” is
selected during Output Options setup (see page 25).
OUTPUTS
RELAY 1
RELAY 1
RESET RT
RESET RT
YES
NO
1. From the Relay menu, press the X button to display
the Reset RT values.
2. Use the S and T buttons to select YES or NO.
Default: NO
3. Press the X button to accept the value and return to
the Relay menu.
RESET
RUN TIME
FOR
RELAY 1
M24533
Selecting YES immediately resets the output run time
hours to zero for this output. When you subsequently
return to this screen, the RESET RT defaults to NO.
Fig. 67. Setup - Outputs - Relay - Reset Runtime.
NOTE: Run times can be reset to zero for each individ-
ual relay. You must do this for each relay that
you want to reset to zero.
62-0254–03
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2. SETUP (ADVANCED OPTIONS)
T775A/B/M SERIES 2000 CONTROLLER
SETUP
OUTPUTS
RELAY 1
2.4. EXIT Setup Mode
Press the W button to exit the selected relay set up and
return to the Outputs menu.
RESET
SCHEDULE
RESET RT
EXIT
To setup the next relay output go to “2.3.4. Setting up the
Relays” on page 26.
If you are finished setting up the relay outputs, press the
HOME button to exit Setup mode and return to the home
screen display.
M24534
This completes the Setup procedure.
Fig. 68. Setup - Outputs - Relay - Exit.
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62-0254–03
T775A/B/M SERIES 2000 CONTROLLER
3. SCHEDULING
3. SCHEDULING
Scheduling provides the ability to set daily temperature
settings for up to two events per day. Typically, these are
the daytime (setpoint) and the nighttime (setback)
settings.
NOTES:
1.
If you press the HOME button or there is no
keypad activity for four minutes, you exit
Scheduling mode and return to the home
screen.
IMPORTANT
2.
If you press the MENU button, you exit
Scheduling mode and return to the menu.
To enable Scheduling, you must first enter Setup
mode (press and hold the MENU button for 5
seconds), select OUTPUTS, select OPTIONS,
select USE SCHED, and then select YES. (see
“2.3.3.1. USE SCHED” on page 24).
To create or change a schedule, you use the —
• Left arrow button (W) to scroll backward through the
Schedule menus
IMPORTANT
• Right arrow button (X) to select the highlighted menu
item and display its content
To properly account for Daylight Saving time, be
sure to set the Date before setting the Time.
See “3.2.2. SET DATE” on page 31.
• Up and Down arrow buttons (S and T) to scroll up
and down through a list of items or to increase or
decrease the value of a displayed schedule parameter
NOTE: Each output is independently configurable to
follow the schedule or not. For modulating
outputs, see “2.3.1.5. SCHEDULE” on page 23.
For relay outputs, see “2.3.4.2. SCHEDULE” on
page 28.
Creating a Schedule
To create a schedule, perform the following in the order
listed:
NOTE: The controller interface is intuitive. You may find
that you do not need the following scheduling
instructions. You may want to use this procedure
simply as a reference to locate the particular
option or parameter of interest.
1. Enable Scheduling in Setup mode - see “2.3.3.1.
USE SCHED” on page 24
2. Enter Schedule mode — see “3.1. Entering Sched-
ule Mode”
3. Set the Schedule Options — see “3.2. OPTIONS”
4. Set Individual Schedules — begin with “3.3. Setting
Individual Schedules” on page 32
5. Exit Schedule Mode — see “3.4. Exiting Scheduling
Mode” on page 33
3.1. Entering Schedule Mode
MENU
MENU
SCHEDULE
SCHEDULE
Press the MENU button, then select SCHEDULE and
press the X button to view the Schedule menu.
OPTIONS
MON-FRI
SAT-SUN
MONDAY
TUESDAY
WEDNESDAY
THURSDAY
FRIDAY
SATURDAY
SUNDAY
EXIT
M24536
Fig. 69. Schedule - Menu.
MENU
MENU
3.2. OPTIONS
SCHEDULE
OPTIONS
SCHEDULE
OPTIONS
1. From the Schedule menu, use the S and T buttons
to highlight OPTIONS.
SET TIME
SET DATE
DAYLIGHT
EXIT
2. Press the X button to display the Options menu.
M24537
Fig. 70. Schedule - Options Menu.
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3. SCHEDULING
T775A/B/M SERIES 2000 CONTROLLER
MAIN
MAIN
3.2.1. SET TIME
Setting the system time is required to enable the
controller to follow daylight saving time.
SCHEDULE
OPTIONS
SET TIME
SCHEDULE
OPTIONS
SET TIME
IMPORTANT
Set the Date before setting the Time. See
“3.2.2. SET DATE”.
08:12 AM
1. From the Options menu, use the S and T buttons
to highlight SET TIME.
2. Press the X button to display the current system
time setting.
SET
SYSTEM
TIME
M24538
3. Use the X button to cycle between the hour,
minute, and AM/PM values.
Fig. 71. Schedule - Options - System Time.
4. Use the S and T buttons to increase/decrease the
desired value for the hour, minute, and AM/PM.
5. Press the W button to accept the Time and return to
the Options menu.
MAIN
MAIN
3.2.2. SET DATE
Setting the system date is required to enable the
controller to follow daylight saving time.
SCHEDULE
OPTIONS
SET DATE
SCHEDULE
OPTIONS
SET DATE
IMPORTANT
To properly account for Daylight Saving time, be
sure to set the Date before setting the Time.
01/01/2007
1. From the Options menu, use the S and T buttons
to highlight SET DATE.
2. Press the X button to display the current system
date setting.
SET
SYSTEM
DATE
M24539
3. Use the X button to cycle between the month, day,
and year values.
Fig. 72. Schedule - Options - System Date.
4. Use the S and T buttons to increase/decrease the
desired value for the month, day, and year.
5. Press the W button to accept the Date and return to
the Options menu.
MAIN
MAIN
SCHEDULE
SCHEDULE
3.2.3. DAYLIGHT (daylight saving time)
OPTIONS
OPTIONS
DAYLIGHT
DAYLIGHT
1. From the Options menu, use the S and T buttons
to highlight DAYLIGHT.
2. Press the X button to display the current system
setting for daylight saving time.
YES
NO
3. Use the S and T buttons to select YES or NO.
Default: YES
4. Press the X button to accept the value and return to
the Options menu.
5. From the Options menu, use the Use the S and T
buttons to highlight EXIT.
USE
DAYLIGHT
SAVING
TIME
M24540
6. Press the X button to return to the Schedule menu.
Fig. 73. Schedule - Options - Daylight Saving Time.
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T775A/B/M SERIES 2000 CONTROLLER
3. SCHEDULING
MENU
MENU
3.3. Setting Individual Schedules
As shown in the Schedule menu (Fig. 69 on page 30),
schedules can be set for the following time periods:
SCHEDULE
MON-FRI
SCHEDULE
MON-FRI
E1 SETPT
•
•
•
Monday through Friday
Saturday and Sunday
Individual days of the week
E1 TIME
E2 SETPT
E2 TIME
EXIT
1. From the Schedule menu, use the S and T buttons
to highlight the desired time period.
2. Press the X button to display the Schedule menu
for the selected time period.
M24541
For each selected time period, the schedule event (E1
and E2) parameters are exactly the same as shown in
Fig. 74.
Fig. 74. Schedule Event Menu (Showing MON-FRI).
SCHEDULING EXAMPLE
Setting the schedule is independent of the temperature
settings for the relay outputs. The following illustrates a
weekly schedule for daytime (setpoint) and night time
(setback) use and shows the factory default settings:
Table 4. Mon-Fri Schedule Defaults
DAY
EVENT
SETPT ACTION
TIME
6:00 AM
6:00 PM
a
b
Mon-Fri Event 1 (E1)
Mon-Fri Event 2 (E2)
Setpoint
Setback
Sat-Sun Not used; remains in Setback from Mon-Fri
E2 settings
a
Setpoint time span is 6:00 AM until 5:59 PM because
setback starts at 6:00 PM.
b
Setback time span is 6:00PM until 5:59 AM because
setpoint starts at 6:00 AM.
To set a schedule, continue with “3.3.1. E1 SETPT
(setpoint for event 1)”.
The following figures show the MON-FRI menu, but the
menu selections are the same for any time period.
MAIN
MENU
SCHEDULE
SCHEDULE
3.3.1. E1 SETPT (setpoint for event 1)
MON-FRI
MON-FRI
E1 SETPT
E1 SETPT
1. From the selected time period menu, use the S and
T buttons to highlight E1 SETPT.
2. Press the X button to display the setpoint options.
3. Use the S and T buttons to highlight the desired
option.
SETPOINT
SETBACK
NOT USED
4. Press the X button to accept the value and return to
the selected time period menu.
SELECT
SETPOINT
FOR
EVENT 1
M24542
Fig. 75. Schedule - Event 1 Setpoint.
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3. SCHEDULING
T775A/B/M SERIES 2000 CONTROLLER
MAIN
MAIN
3.3.2. E1 TIME (time for event 1)
SCHEDULE
MON-FRI
E1 TIME
SCHEDULE
MON-FRI
E1 TIME
1. From the selected time period menu, use the S and
T buttons to highlight E1 TIME.
2. Press the X button to display the current time set-
ting for event 1.
3. Use the X button to cycle between the hour,
minute, and AM/PM values.
6:00 AM
4. Use the S and T buttons to increase/decrease the
desired value for the hour, minute, and AM/PM.
5. Press the W button to accept the time and return to
the selected time period menu.
SET
TIME
FOR
EVENT 1
M24543
Fig. 76. Schedule - Event 1 Time.
3.3.3. E2 SETPOINT (setpoint for event 2)
Creating the setpoint for event 2 is accomplished the
same way as the first event. See “3.3.1. E1 SETPT
(setpoint for event 1)” on page 32 above.
3.3.4. E2 TIME (time for event 2)
Creating the time for event 2 is accomplished the same
way as the first event. See “3.3.2. E1 TIME (time for event
1)” above.
3.3.5. EXIT (exit from selected time period settings)
After entering the time for event 2, use the W button to exit
the schedule time period and return to the Schedule menu
(Fig. 69 on page 30) to select a different time period.
When you finish scheduling the time periods, continue
with “3.4. Exiting Scheduling Mode”.
3.4. Exiting Scheduling Mode
Press the HOME button to exit the Schedule menu and
return to the home screen display.
This completes the Scheduling procedure.
33
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62-0254–03
T775A/B/M SERIES 2000 CONTROLLER
SUMMARY MENU
SUMMARY MENU
TROUBLESHOOTING
The Summary menu provides the ability to view the
schedule (E1 and E2 times) for each relay for each day of
the week.
Power Loss
The date and time settings are retained for 24 hours after
a power outage. After a power loss of more than 24 hours,
the date and time settings may need to be reentered. All
other settings are stored permanently.
NOTE: Scheduling must be enabled for the Summary
menu to display. Enabling the schedule is
determined in the Setup process for the Output
Options (see page 24).
Errors and Diagnostics
The controller provides an error message and diagnostic
status as described below.
MENU
MENU
SUMMARY
SUMMARY
Error Message
There is a two-character error code that displays in
response to controller software problems:
MONDAY
RELAY 1-2
E1: 06:00AM (72)
E2: 06:00PM (65)
EE
EEPROM Failure — The values read back from
the EEPROM are not the same as written into the
EEPROM. This error cannot be field repaired. Replace
the device.
M24545
Fig. 77. Summary Example - Monday Settings.
Diagnostic Messages
There are two diagnostic messages that can display in
response to sensor problems. The diagnostic codes that
can flash on the display are:
For each relay, the Summary display indicates the time
and temperature (in parenthesis) for each of the two
scheduled events E1 and E2.
– –
1. Press the MENU button to view the menu.
2. Use the S and T buttons to highlight SUMMARY.
3. Press the X button to display the Summary
settings.
Sensor Open or Shorted — Two dashes display
when a sensor (typically temperature) is open or
shorted. An open circuit is considered anything
greater than 1570 ohms (greater than 300F), shorted
anything less than 770 ohms (less than -73F). Which-
ever stages are operating with this sensor cease to
control (meaning relays go to OFF and proportional
outputs go to zero percent).
4. Use the X button to scroll forward through each day
of the week (Monday, Tuesday, Wednesday,
Thursday, Friday, Saturday, and Sunday).
5. While viewing a specific day, use the S and T
buttons to cycle through the individual relay
schedules for that day.
This message can also mean that the sensor is pro-
grammed, but not physically connected.
When finished, press the home key to return to the home
display screen.
-60°F or 270°F (-51°C or 132°C) Blinking
Temperature Out of Range — The temperature
display blinks when the sensed temperature range is
outside of the display range, below -60°F (-51°C) or
above 270°F (132°C). The displayed value remains at
that displayed limit and control continues. Controller
continues to function unless an open or shorted state
is detected.
Blinking relay status
Relay Minimum Off Time is Active — On the home
screen, each relay’s indicator („) blinks while the
relay’s minimum off time is active.
62-0254–03
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SPECIFICATIONS
T775A/B/M SERIES 2000 CONTROLLER
SPECIFICATIONS
DoC
Power: 24, 120, or 240 Vac; 50/60 Hz;
A separate earth ground is required for any power source.
Emissions Compliance
EN 55022: 2006
CISPR 22: 2006
VCCI V-3/2006.04
ICES-003, Issue 4: 2004
FCC PART 15 SUBPART B Class B Limit
Power Consumption:
•
•
8 VA maximum at 60 Hz
10 VA maximum at 50 Hz
Operating & Storage Temperature Ambient Rating:
•
•
-40°F to 125°F (-40°C to 52°C) @ 50 Hz
-40°F to 140°F (-40°C to 60°C) @ 60 Hz
Immunity Compliance
EN 61000-6-1: 2001 covering
EN 61000-4-2: 1995 + A1: 1998 + A2: 2001
EN 61000-4-3: 2002
Relative Humidity: 5% to 95% non-condensing
EN 61000-4-4: 2004
Relay Contact Output Ratings (N.O. and N.C.):
EN 61000-4-5: 1995 + A1: 2001
EN 61000-4-6: 1996 + A1: 2001
EN 61000-4-8: 1993 + A1: 2001
EN 61000-4-11 2nd Ed.: 2004
•
•
•
•
1/2 hp; 9.8 AFL, 58.8 ALR @ 120 Vac
1/2 hp; 4.9 AFL, 29.4 ALR @ 240 Vac
125 VA pilot duty @ 120/240 Vac
10A @ 24 Vac (resistive)
Modulating Outputs:
Safety Compliance
UL 60730-1 and Part 2-9 for US and Canada
•
•
•
•
•
0-10 Vdc; drive a minimum of 2,000 Ohms
2-10 Vdc; drive a minimum of 2,000 Ohms
4-20 mA; drive a maximum of 600 Ohms
Electronic Series 90
FCC Compliance Statement:
Floating
This equipment has been tested and found to comply with
limits for a Class B digital device, pursuant to Part 15 of
the FCC rules. These limits are designed to provide
reasonable protection against harmful interference in
residential installations. This equipment generates, uses,
and can radiate radio frequency energy, and if not
installed and used in accordance with the instructions,
may cause harmful interference to radio communications.
However, there is no guarantee that interference will not
occur in a particular installation. If this equipment does
cause interference to radio or television equipment
reception, which can be determined by turning the
equipment off and on, the user is encouraged to try to
correct the interference by one or more of the following
measures:
— Reorient or relocate the receiving antenna
— Move the equipment away from the receiver
— Plug the equipment into an outlet on a circuit different
from that to which the receiver is connected
— Consult the dealer or an experienced radio/television
technician for additional suggestions
You are cautioned that any change or modifications to the
equipment not expressly approve by the party responsible
for compliance could void Your authority to operate such
equipment.
This device complies with Part 15 of the FCC Rules.
Operation is subjected to the following two conditions 1)
this device may not cause harmful interference and 2) this
device must accept any interference received, including
interference that may cause undesired operation.
35
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62-0254–03
DOC
T775A/B/M SERIES 2000 CONTROLLER
Automation and Control Solutions
Honeywell International Inc.
1985 Douglas Drive North
Golden Valley, MN 55422
customer.honeywell.com
Honeywell Limited-Honeywell Limitée
35 Dynamic Drive
Toronto, Ontario M1V 4Z9
® U.S. Registered Trademark
© 2007 Honeywell International Inc.
62-0254–03 M.S. Rev. 09-07
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