Limit switches

[wgalcik]

I have a 1983 geka 100 ton ironworker. Would anyone know the cause of all my limit switches to stop working . Seems to be extremely low voltage readings on them
Thanks

 

[Scottl]

I have a 1983 geka 100 ton ironworker. Would anyone know the cause of all my limit switches to stop working . Seems to be extremely low voltage readings on them
Thanks

Wiring problem? If all have stopped working a common feed is likely bad.

 

[CITIZEN F16]

Grab a meter and start at the voltage source and work toward the switches. Not familiar with that machine are those switches run off a power supply, transformer, or line voltage?

 

[Bondo]

Sounds like a transformer or loose connection on the transformer

 

[dana gear]

Probably a circuit wiring problem or transformer, we had a press brake here that had all the limit switches daisy chained in series, example switch one was wired through switch two and so forth. If any one of the limit switches tripped it opened the shared circuit. We had a bad Cherry Micro switch that played games with us for a while.
Sometimes it worked fine other times odd voltages, odd resistance through that one switch. found the switch that had the problem and changed it out.