T7079A,B SOLID STATE REMOTE TEMPERATURE CONTROLLERS
63-2572—04
4
Fig. 4. Wall-mounted sensor.
WIRING
CAUTION
Electrical Shock or Equipment Damage Hazard.
Can shock individuals or short equipment
circuitry.
Disconnect power supply before installation.
Refer to Fig. 5 for locating the appropriate power input, remote
sensor input and stage output terminals. To access the
terminals, remove the four cover screws and lift off the cover.
Refer to Fig. 6 and 7 for typical wiring.
IMPORTANT
Erratic temperature readings from the sensor can be
caused by poor wiring practices that must be avoided
to ensure proper operation:
1. Do not route the temperature sensor wiring with build-
ing power wiring.
2. Do not locate the temperature sensor wiring next to
control contactors.
3. Do not locate the temperature sensor wiring near
electrical motors.
4. Do not locate the temperature sensor wiring near
welding equipment.
5. Make sure good mechanical connections are made to
both the sensor and the control.
6. Use 90°C copper wire.
Fig. 5. Board layout for T7079.
NOTES:
1.
The larger conduit knockout on the enclosure
bottom is for line-voltage applications.
2.
The smaller knockout on the enclosure bottom is
for low-voltage applications.
3.
The sensor knockout is at the enclosure top.
Fig. 6. Typical low-voltage (24 Vac) wiring application.
M13130
SENSOR
T7047C1090
WALLMOUNT SENSOR
CASE (OPTIONAL)
CAUTION: POSITION SENSOR AWAY
FROM SCREW TERMINALS.
SCREW
TERMINAL
SCREW
TERMINAL
LEADWIRES
TO T7079
LD1
J5
J4
J3
SENSOR
J1
DIFF2
DIFF1
INTER
COOL
HEAT
LD2
PWR
NC
NO
NO
COM
NC COM
COM
120V
240V
M17561
J2
24 VAC
1
1
1
1
3
2
TWO-STAGE MODELS ONLY.
LOW-VOLTAGE MODELS ONLY.
LINE-VOLTAGE MODELS ONLY.
1
2
3
STAGE 2 LED
POWER LED
STAGE 1 LED
SENSOR
TERMINALS
STAGE DIFFERENTIAL
ADJUSTMENTS
INTERSTAGE
DIFFERENTIAL
OUTPUT STAGE
SWITCHING
VOLTAGE INPUT
J5
J4
SENSOR
J1
NC
NO
NO
COM
NC COM
M17562
J2
24 VAC
STAGE 2
LED
STAGE 1
LED
L1
(HOT)
L2
