You haven't mentioned it and no one else has asked yet, but are you fitting a CJ1W-TER01 Terminating End Cover to the right of the Output module while you are testing? This must be fitted to terminate the bus.
You haven't mentioned it and no one else has asked yet, but are you fitting a CJ1W-TER01 Terminating End Cover to the right of the Output module while you are testing? This must be fitted to terminate the bus.
Hi Geospark, yes the end cover is fitted and I have tried a replacement just in case. The only thing that has not been replaced is the power supply, and I should be able to pick one up tomorrow
So in the end this whole thing was down to a faulty Omron CJ1W-PD022 power supply unit which was not providing the 24v required to power the coils of the relays.
Thanks to everyone for your time and contributions.
Rare indeed.
However I recently experienced one faulty CJ1W-PA202 AC power supply out of an order of 40 units. It was immediately exchanged by OMRON under a very efficient RMA system.
Hi Geospark, yes the end cover is fitted and I have tried a replacement just in case. The only thing that has not been replaced is the power supply, and I should be able to pick one up tomorrow