User manual
Publication CIG-WD001B-EN-P - May 2005
1756 ControlLogix I/O Modules 7-11
12
34
5
6
7
8
910
11
12
1314
1516
1718
19
20
1. All terminals with the same name are connected together on the module.For example,
L2 can be connected to any terminal marked L2-0.
2. When you daisy chain from a group to another RTB, always connect the daisy chain to
the terminal directly connected to the supply wire, as shown above.
3. This wiring example shows a s ingle voltage source.
4. If separate power sources are used, do n ot exceed the specified isolation voltage.
Daisy chain to other RTBs
Group 0Group 0
Group 1Group 1
IN-1
IN-3
IN-5
IN-7
L2-0
IN-9
IN-11
IN-13
IN-15
L2-1
IN-0
IN-2
IN-4
IN-6
L2-0
IN-8
IN-10
IN-12
IN-14
L2-1
L2
L1
NOTES:
5. Do not connect more than 2 wires to any single terminal.
1756-IN16
12
34
56
78
910
1112
1314
1516
1718
1920
3-Wire RTD
Shield Ground
IN-1/A
IN-1/B
RTN-1/C
IN-3/A
IN-3/B
RTN-3/C
Not used
IN-5/A
IN-5/B
RTN-5/C
IN-0/A
IN-0/B
RTN-0/C
IN-2/A
IN-2/B
RTN-2/C
Not used
IN-4/A
IN-4/B
RTN-4/C
1. For 2-wire resistor applications, including calibration, make sure IN-x/B and
RTN-x/C are shorted together. The example above shows IN-4/B and RTN-4/C
shorted together.
2-Wire RTD
NOTES:
2. Do not connect more than 2 wires to any single terminal.
1756-IR6I – 2 or 3-Wire RTD
12
34
56
78
910
1112
1314
1516
1718
1920
1. Wiring is exactly the same as the 3-wire RTD with one wire left open.
4-Wire RTD
Shield Ground
IN-1/A
IN-1/B
RTN-1/C
IN-3/A
IN-3/B
RTN-3/C
Not used
IN-5/A
IN-5/B
RTN-5/C
IN-0/A
IN-0/B
RTN-0/C
IN-2/A
IN-2/B
RTN-2/C
Not used
IN-4/A
IN-4/B
RTN-4/C
NOTES:
2. Do not connect more than 2 wires to any single terminal.
1756-IR6I – 4-Wire RTD
1
2
3
4
56
78
910
1112
1314
1516
1718
1920
+
–
Co ld
junc tion
sensor
Thermocouple
Wire
IN-0
Not used
RTN-0
IN-2
Not used
RTN-2
Not used
IN-4
Not used
RTN-4
IN-0
Not used
RTN-1
IN-3
CJC+
RTN-3
CJC-
IN-5
Not used
RTN-5
Lug
NOTES: If separate power sources are used, do not exceed the specified
isolation voltage.
2. Do not connect more than 2 wires to any single terminal.
3. The part number for the cold junction sensor used on the
1756-IT6I module is 94238301.
1.
1756-IT6I