32Racer Posted October 5, 2013 Report Share Posted October 5, 2013 I have a V570 OPLC controlling a packaging machine. This is my 3rd machine running the 570. I have not had this problem on any of the other machines running the same program.This is a brand new PLC. As part of the safety circuit when the safety circuit is activated "Estop button pressed" I deactivae the 24 Volts to the Output Module. This way it is impossible for a output to be active with Estop active. On this PLC I have the 24 Volt wire disconnected but I am still getting 24 Volts coming out of 2 of the outputs. The only way to deactivate the outputs is to disconnect the -24 Volt from the output card. I know that on the last 2 machines that when the +24 was disconnected that the outputs would no longer function. Could this possibly be a faulty OPLC? I tried running the ground straight to the -24 and this made no difference. I also checked all connections and everything was correct. Please Help!!! Link to comment Share on other sites More sharing options...
32Racer Posted October 6, 2013 Author Report Share Posted October 6, 2013 I found the problem... It was a jumper that was added to the panel for a test. This was causing a feedback!!! Link to comment Share on other sites More sharing options...
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