Honeywell T775U User Manual Page 6
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T775U SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER
62-0255—07 6
Fig. 5. Sensor Wiring — 3-wire shielded cable
connection from Sensor A to 0-10 Vdc sensor
(H76xx humidity sensor shown).
Fig. 6. Sensor Wiring — 2-wire shielded cable
connection from 4-20 mA sensor to
T775 controller (loop powered wiring).
Fig. 7. Sensor Wiring — 2-wire shielded cable
connection from Sensor A to a 0-10 Vdc sensor
using separate transformer.
Fig. 8. Sensor Wiring — 2-wire 4-20mA sensor input
to T775 controller using a separate (Vdc only)
transformer.
M24550
THE T775U WILL ONLY ACCEPT 0-10 VDC AND 4-20 MA SENSORS.
IF REPLACING AN H775 CONTROLLER THAT USES A C7600B OR OTHER
2-10 VDC SENSOR, THE SENSOR MUST BE REPLACED. REPLACE THE
C7600B2008 SENSOR (2-10VDC OUTPUT) WITH THE H7655A1001
(0-10 VDC OUTPUT) SENSOR. THE H7655A1001 SENSOR USES THE SAME
ENCLOSURE STYLING AND WIRING AS THE C7600B.
1
NOTES:
1. SHIELDED CABLE MUST BE
CONNECTED TO A SEPARATE
EARTH GROUND. HOWEVER,
DO NOT GROUND SHIELDED
CABLE AT SENSOR END.
2. TO MINIMIZE NOISE PICKUP,
MAKE SENSOR CONNECTION
FROM SHIELDED CABLE AS
CLOSE AS POSSIBLE TO
SENSOR BODY.
EXAMPLE OF
H76XX HUMIDITY
SENSOR;
0-10 VDC
CONNECTION
SENSOR A
1
SENSOR B
C
S
V
T
T
VO
GND
VIN
CSV
SHIELDED CABLE
M24890C
V
S
SHIELDED CABLE MUST BE CONNECTED TO A SEPARATE EARTH GROUND.
DO NOT GROUND SHIELDED CABLE AT SENSOR END.
TO MINIMIZE NOISE PICKUP, MAKE SENSOR CONNECTION FROM SHIELDED
CABLE AS CLOSE AS POSSIBLE TO SENSOR BODY.
THE T775 HAS AN INTEGRAL LOAD OF 500 OHMS WHICH RESULTS IN A
10V DROP AT 20MA. TO USE 4-20MA LOOP POWERED WIRING, THE SENSOR
MUST BE CAPABLE OF OPERATION WITH 8V OR LESS ACROSS ITS TERMINAL.
SENSOR A
SENSOR B
T
T
SHIELDED CABLE
PWR
OUT
COM
C
S
V
1
2
3
1
2
3
M24551
S
C
NOTES:
1. SHIELDED CABLE MUST BE
CONNECTED TO A SEPARATE
EARTH GROUND. HOWEVER,
DO NOT GROUND SHIELDED
CABLE AT SENSOR END.
2. TO MINIMIZE NOISE PICKUP,
MAKE SENSOR CONNECTION
FROM SHIELDED CABLE AS
CLOSE AS POSSIBLE TO
SENSOR BODY.
EXAMPLE OF
P7640A
PRESSURE
SENSOR;
0-10 VDC
CONNECTION
SENSOR A
SENSOR B
T
T
SHIELDED CABLE
PWR
OUT
COM
C
S
V
L1
(HOT)
L2
24 VAC
M24889A
S
C
NOTES:
1. SHIELDED CABLE MUST BE
CONNECTED TO A SEPARATE
EARTH GROUND. HOWEVER,
DO NOT GROUND SHIELDED
CABLE AT SENSOR END.
2. TO MINIMIZE NOISE PICKUP,
MAKE SENSOR CONNECTION
FROM SHIELDED CABLE AS
CLOSE AS POSSIBLE TO
SENSOR BODY.
EXAMPLE OF P7640A 4-20 MA SENSOR CONNECTION
SENSOR A
SENSOR B
T
T
SHIELDED CABLE
C
S
V
PWR ZEROCOMOUT
+
–
12-30 VDC
POWER SUPPLY
- T775U Series 2000 Electronic 1
- Stand-Alone Controller 1
- Actuators 2
- BEFORE INSTALLATION 3
- INSTALLATION AND SETUP 3
- MOUNTING 3
- Reset Temperature Control 4
- Sensor Wiring 5
- 62-0255—07 6 6
- Controller Wiring 7
- Controller Wiring Details 8
- WIRING APPLICATION 9
- EXAMPLES 9
- CHECKOUT 10
- INTERFACE OVERVIEW 11
- Home Screen 12
- Accessing the Menus 12
- Using the Menus 12
- PROGRAMMING OVERVIEW 13
- 1. SETUP 13
- Setup Procedure 14
- 1.2.2.1. TYPE (Sensor A only) 15
- 1.2.2.2.3. MIN or MAX VALUE 16
- 1.2.2.5. Exit Sensor A Setup 17
- 1.3. Setting up the Outputs 17
- 1.3.1.2. MIN OUT % 18
- 1.3.1.3. INTEGRAL 18
- 1.3.1.4. DERIVATIVE 19
- 1.3.1.5. SCHEDULE 19
- 1.3.1.6. RESET 20
- 1.3.1.7. Hide 20
- 1.3.2. NBR OF RELAYS 21
- 1.3.3. OPTIONS 21
- 1.3.3.1. USE SCHED 21
- 1.3.3.2. MIN OFF or MIN ON 22
- 1.3.3.5. Exit Options Setup 23
- 1.3.4. Setting up the Relays 23
- 1.3.4.1. SCHEDULE 23
- 1.3.4.2. RESET 24
- 1.3.4.3. RESET RT (run time) 24
- 1.3.4.4. EXIT Relay Setup 24
- 1.4. Exiting Setup 24
- 2. PROGRAMMING OUTPUTS 25
- (MOD AND RELAY) WITH NO 25
- 2.1.3. SETBACK 26
- 2.1.3. SENSOR 26
- 2.1.5. THROTTLING RANGE or 26
- DIFFERENTIAL 26
- 2.1.6. ACTION 27
- 3. PROGRAMMING OUTPUTS 28
- (MOD AND RELAY) WITH 28
- 3.2.2. RESET B1 or OUTSD MIN 29
- 3.2.4. RESET B2 or OUTSD MAX 30
- 3.2.5. THROTTLING RANGE or 30
- 3.2.6. ACTION 31
- (MOD 2 only) 32
- 4. SCHEDULING 33
- 4.2.1. SET TIME 34
- 4.2.2. SET DATE 34
- 35 62-0255—07 35
- 62-0255—07 36 36
- SUMMARY MENU 37
- TROUBLESHOOTING 37
- SPECIFICATIONS 37
- Emissions Compliance 38
- Immunity Compliance 38
- Safety Compliance 38
- FCC Compliance Statement: 38
- T775U SERIES 2000 CONTROLLER 39
- ® U.S. Registered Trademark 40
- Printed in U.S.A 40
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