Allen-Bradley ControlLogix 1756-PA75R/A - Route Line Power and Cables

ControlLogix Redundant Power Supply 17
Publication 1756-IN573C-EN-P - October 2003
Route Line Power and Cables
Follow the guidelines below when wiring a redundant power supply.
• Never run all three lines together in any application. For example, do not
run input power, output power (1756-CPR2) and annunciator cable together.
• If the redundant power supply and the annunciator cable use the same input
power source, you can route the power line and annunciator cable together.
For example, if your application uses a DC redundant power supply and the
annunciator cable is connected to a DC input module, you can route the
power source line and annunciator cable together, as shown in Figure 16.
Figure 16
• If the redundant power supply and the annunciator cable use different input
power sources, you must route the power line and annunciator cable
separately. For example, if your application uses an AC redundant power
supply and the annunciator is connected to a DC input module, you must
route the power source line and annunciator separately, as shown in
Figure 17.
Figure 17
To DC input
power
Annunciator cable
to DC input module
Output power
(1756-CPR2) to chassis
42832
To AC input power
Annunciator cable
to DC input module
Output power
(1756-CPR2) to chassis
42833
Plastic barrier
In this case, make sure you tuck the annunciator
wiring under the tab at the top of the plastic barrirer.
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