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T775J ELECTRONIC REMOTE TEMPERATURE CONTROLLER
63-2248—4
5
Fig. 5. Feature locations.
IMPORTANT
Erratic temperature readings from the 193987GA
Sensor can be caused by poor wiring practices that
must be avoided to assure proper operation:
a. Do not route temperature sensor wiring with
building power wiring.
b. Do not locate temperature sensor wiring next to
control contactors.
c. Do not locate temperature sensor wiring near
electric motors.
d. Do not locate temperature sensor wiring near
welding equipment.
e. Make sure good mechanical connections are
made to both the sensor and the controller.
f. Do not mount sensor with leadwire end (wire end)
pointing up in an area where condensation can
occur.
g. Use shielded wiring to connect the sensor to the
T775 when an electrically noisy environment
exists. See Fig. 6.
SELECT
SET
ENTER
NO COM NC
OUTPUT 1
OUTPUT 2
NO COMNC
120V
COM
240V
12
3
4
SA SB
1
23
1
2
3
4
5
678
SA TOD 24V SB
C/F
T775
GROUND
SHIELD
TO T775
CASE OR TO
GROUNDING
SCREW
SHIELDED
CABLE
SHIELDED
CABLE
GROUNDING SCREW
NOTE: DO NOT GROUND
SHIELDED CABLE AT
SENSOR END.
NOTE: TO MINIMIZE NOISE PICKUP, MAKE CONNECTION
FROM SHIELDED CABLE AS CLOSE AS POSSIBLE
TO SENSOR BODY.
SENSOR
M4718
Fig. 6. Using shielded cable for cable
runs longer than 25 feet.
SELECT
SET
ENTER
NO COM NC
OUTPUT 1
OUTPUT 2
NO COMNC
120V
COM
240V
12
3
4
SA SB
1
23
1
2
3
4
5
678
SA TOD 24V SB
C/F
M8118
LCD
TEMPERATURE
DISPLAY
PROGRAMMING
KEYS
SENSOR INPUT,
TOD, AND
24V TERMINALS
KNOCKOUT "A"
KNOCKOUT "B"
KNOCKOUT "C"
MODULATING OUTPUT
ELECTRONIC
SERIES 90, 4-20 mA
OR 0-18 VDC
DEPENDING ON MODEL
RELAY OUTPUT
STAGES
LINE
VOLTAGE
INPUTS
MOUNTING
HOLE
LOCATION
RESET DIP
SWITCHES
O
C /
O
F SELECTION