Thanks Mesutphen,
We have shielded cable with it grounded at the URTD II module input as directed by the manufactuer. It is floating at the motor side ( The Shield).
All conductors and connections have been checked and I've ohmed the rtd's and they look good. I'm guessing it is some electrical noise? I have also move the rtd conductors to different inputs to see if rtd fault shows up on on new input/channel.
Has anyone found a way to eliminate temperature spikes on motor RTD's to keep from tripping out motor protection relay. The relay has no way to add a time delay to filter out spikes.
