User manual
Publication CIG-WD001B-EN-P - May 2005
1746 I/O Modules 5-21
RTD 0
Sense 0
Return 0
RTD 1
Sense 1
Return 1
RTD 2
Sense 2
Return 2
RTD 3
Sense 3
Return 3
RTD 4
Sense 4
Return 4
RTD 5
Sense 5
Return 5
RTD 6
Sense 6
Return 6
RTD 7
Sense 7
Return 7
Add Jumper
Cable Shield
(Frame Ground)
Potentiometer
Belden #9501 Shielded Cable
2-Wire Potentiometer
Cable Shield
(Frame Ground)
Cable Shield
(Frame Ground)
RTD
RTD
RTD
Return
Return
Return
Belden #9501 Shielded Cable
Sense
Sense
Belden #9501 Shielded Cable or
Belden #83503 Shielded Cable
Belden #9501 Shielded Cable or
Belden #83503 Shielded Cable
Leave One Sensor Wire Open
RTD 0
Sense 0
Return 0
RTD 1
Sense 1
Return 1
RTD 2
Sense 2
Return2
RTD 0
Sense 0
Return 0
RTD 1
Sense 1
Return 1
RTD 2
Sense 2
Return2
RTD 0
Sense 0
Return 0
RTD 1
Sense 1
Return 1
RTD 2
Sense 2
Return2
RTD 0
Sense 0
Return 0
RTD 1
Sense 1
Return 1
RTD 2
Sense 2
Return2
RTD 3
Sense 3
Return 3
RTD 4
Sense 4
Return 4
RTD 5
Sense 5
Return 5
RTD 6
Sense 6
Return 6
RTD 7
Sense 7
Return 7
Cable Shield
(Frame Ground)
Add
Jumper
2-Wire RTD
3-Wire RTD
4-Wire RTD
Terminal Connections
1746-NR8
Thermocouple or mV Cable
TB1
CJC A+
CJC A-
Channel 0+
Channel 0-
Shield for CH0 and CH1
Channel 1+
Channel 1-
Channel 2+
Channel 2-
Shield for CH2 and CH3
Channel 3+
Channel 3-
Channel 4+
Channel 4-
Shield for CH4 and CH5
Channel 5+
Channel 5-
Channel 6+
Channel 6-
Shield for CH6 and CH7
Channel 7+
Channel 7-
CJC B+
CJC B-
CJC A+
CJC A-
CJC Assembly
Shield
Shield
Shield
Shield
Shield
CJC B+
CJC B-
CJC Assembly
Release Screw Max. Torque =
0.7 to 0.9 Nm (6 to 8 in-lb)
Release Screw Max. Torque =
0.7 to 0.9 Nm (6 to 8 in-lb)
Channel 0+
Channel 0-
Channel 1+
Channel 1-
Channel 2+
Channel 2-
Channel 3+
Channel 3-
Analog Common
(1)
Cold Junction Compensation (CJC)
Do not remove or loosen the cold junction compensating thermistor
assemblies located between the two upper and lower CJC terminals on
the terminal block. Both thermistor assemblies are critical to ensure
accurate thermocouple input readings at each channel. The module will
not operate in the thermocouple mode if either assembly is removed.
1746-NT4 1746-NT8