Hardware reference guide
Power Supplies
35013379 02 October 2007 89
LED Indicator 
and Description
The following figure shows the CPS12400 LED indicator. 
The following table shows the CPS12400 LED description.
Wiring Diagram The following figure shows the 140CPS12400 wiring diagram. 
LED Description
LEDs Color Indication when On
Pwr ok Green Power is supplied to the bus.
Pwr ok
Note: See Power and Grounding Considerations for AC and DC Powered 
Systems, p. 776 for power and grounding wiring guidelines and operational 
information.
Internally connected.
Do not connect any external wiring to these points.
AC L
AC N
1
2
3
4
5
6
7
}
Install jumper 
for 115 VAC 
operation only
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123 www.barr-thorp.com










