Honeywell T775J Product Data page 5

SENSOR INPUT,
TOD, AND
24V TERMINALS
KNOCKOUT "A"
MODULATING OUTPUT
ELECTRONIC
SERIES 90, 4-20 mA
OR 0-18 VDC
DEPENDING ON MODEL
KNOCKOUT "B"
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.
T775J ELECTRONIC REMOTE TEMPERATURE CONTROLLER
LCD
TEMPERATURE
DISPLAY
PROGRAMMING
KEYS
SELECT
1 2 3 4 5 6 7 8
SA TOD 24V SB
2 1
3
OUTPUT 1
NO COM NC
RELAY OUTPUT
STAGES
Fig. 5. Feature locations.
C/F
O
C /
SET
ENTER
SA SB
OUTPUT 2
NO COM NC
SELECT
GROUND
SHIELD
TO T775
CASE OR TO
GROUNDING
SCREW
1 2 3
SHIELDED
CABLE
SA TOD 24V SB
3 2 1
SHIELDED
CABLE
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.
Fig. 6. Using shielded cable for cable
runs longer than 25 feet.
5
O
F SELECTION
RESET DIP
SWITCHES
MOUNTING
HOLE
LOCATION
LINE
VOLTAGE
INPUTS
KNOCKOUT "C"
M8118
T775
C/F
SET
ENTER
SA SB
4 5 6 7 8
OUTPUT 1 OUTPUT 2
NO COM NC NO COM NC
GROUNDING SCREW
SENSOR
M4718
63-2248—4