HAAS Alarm 175

[Peroni]

2016 VF2SS threw an alarm 175 for ground fault detected this morning. I think it may have something to do with the tsc pump? I can run the tsc only and it seems to work just fine. Yet when running a program that uses tsc it alarms out. I would think if the pump motor were actually bad it would throw an alarm when turned on be it manually or via m code? Machine is running the same program now but with just the low pressure coolant pump and it hasn't thrown any alarms.

 

[countryguy]

There are a lot of posts on 175. There is some info in this Haas doc. They refer you to the I/O.
https://www.haascnc.com/service/tro...ontrol---i-o-pcb---troubleshooting-guide.html Hope you figure it out.

 

[magno_grail]

Ground fault would mean there is a potential difference between the case of the pump and the machine. Try an Ohm meter between the case metal and a ground wire inside the cabinet.

 

[countryguy]

The DVM rocks! :-) And again w/ my usual post on min/max mode on the meters these days. Set-em to auto for min/max monitoring and wait for the beep or the failure. They'll indicate a value for ya. Love mine.

 

[Stirling]

What’s the chance the extra stay/mist from. Tsc is spraying or accumulating on something and is actually causing the fault.

I ran a particularly messy job recently and it tripped the 120v machine gfi. Inside lights got wet. Was spraying of the part at just the right angle to be a 300 psi pressure washer