Working on a dumbwaiter that has a Modicon TSX nano plc with a Square D reversing contactor. The unit will not run. Have already checked and/or bypassed all the interlocks and still cannot get the unit to run. Can manually trip the contactor to make motor work. No error lights on PLC. Looking to up grade PLC. Do not have copy of PL7-07 to get copy of program off unit. Cannot find a copy anywhere. Do not want to have to rewrite program, but looking like that is what I will have to do. Any help or ideas.
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