Allen-Bradley ControlLogix 1756-IA8D - Page 8

8 ControlLogix AC (79-132V) Diagnostic Module
Publication 1756-5.5 - September 1999
Wiring example
$IWHUILHOGVLGHZLULQJLVFRPSOHWHVHFXUHWKHZLUHVLQWKHVWUDLQUHOLHIDUHDZLWKDFDEOHWLH
12
34
5
6
7
8
910
1112
1314
1516
1718
19
20
47k
Ω,
1/2W,
5% resistor
47k
Ω,
1/2W,
5% resistor
NOTES: All terminals with the same name are connected together on the module. For example, L2
can be connected to any terminal marked L2-0.
This wiring example shows a single voltage source.
When you daisy chain from a group to other RTBs, alway connect the daisy chain to the
terminal directly connected to the supply wire, as shown above.
40202-M
Resistors are not necessary if Wire Off diagnostic is not used.
To Determine Leakage Resistor
(P/S = Field side power supply)
R
LEAK
Maximum = (P/S Voltage-19V ac)/1.5mA
R
LEAK
Minimum = (P/S Voltage-20V ac)/2.5mA
Not used
L2-0
L2-0
L2-0
L2-0
L2-1
L2-1
L2-1
L2-1
L2-1
L1-0 Loss of Field Power
IN-0
IN-1
IN-2
IN-3
IN-4
IN-5
IN-6
IN-7
L1-1 Loss of Field Power
Daisy chain to
other RTBs
Group 0Group 0
Group 1Group 1
L2
L1
Recommended Values
3 69 ROWDJH 5
/($.
:
9DF 43k
Ω
9DF 47k
Ω
9DF 47k
Ω
9DF 51k
Ω
1756-IA8D