Message Edited by Ching P. on 10-24-2007 11:03 AM
have used many cFP-RLY-421 in the past without any problems. It is the
first time we use the 425. We use them on two different systems and we
have the same problem on the two systems.
Do you have any other suggestions for troubleshooting?
Ching's reply implies that the internal overvoltage protection may be causing the extra heat. Docs for the 425 state that this internal protection will cause some leakage current. You might run an experiment where you disconnect all external wiring to 425 module and see if it still trips on overtemp. If it stops tripping out, then a much harder look at internal protection is warranted.
You mentioned that one of the 425's did not trip out. Anything different about number/type of loads connected to that module? Have you tried swapping the actual 425 modules around to see if problem moves with module or stays with position on backplane?