michairtech
Member
We have a Unitronics v570 that runs 3 dry rooms for wood, for months it worked without any visable issues to us. The person who programmed it has since left but has tried to help us out with it but has had no luck. The issue is if i fresh load the software and run the dry rooms i can turn them off/and on as programed but after some time 3-5 min if you try to shut down kiln 1 or 2 it will freeze it and you cant change it from auto to timer or off. So i called the person who last edited the program he logged into our pc plugged into it and from there he could activate stuff so he insisted it was a bad PLC so we ordered a new one and uploaded/downloaded the original file that worked months ago into it and well you guessed it same issue. So I have been on the phone with everyone that people have guided me to but no one has any input and now im here asking you great people that have more knowledge in this world for help and/or guidance. If i press the virtual off button the ladder changes to red in the table as soon as i let of it goes black and just dont latch. The issue first started on room 2 with the fans on and stuck so we couldn't use the plc to shut room down. after playing with it room 1 locked up and now its a continuing loop. We have reinstalled program, have replaced plc ran it without io board and results always are the same. Thanks again.
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