Getting always fault when machine is in vacuum and when it's open

Dear Experts

  We have a metallizer machine , in this machine in vacuum chamber we have an axis control by a 0.59KW servo and a S110 (6SL3040-0JA01_0AA01) motor module , sometimes it  gives us   this fault sequence :

30001:power unit over current (fault cause : 11bin )

7490 : EPOS : Enable signal withdrawn while traversing 

30021:Power unit ground fault(0)

we changed the power and drive click cable , but after 1 week again the same problem , and this fault always happen in vacuum and when the machine is open we test it a bout 30 time but every thing was right , and I want to know if we have a current leakage from other part of the machine on this motor , can this make the problem for us?

with the best wishes

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Split from FAULT NO. F30001.

saeed kolouri

and this fault always happen in vacuum and when the machine is open we test it about 30 times but every thing was right ,

If I get that correctly. The motor 0,59KW servo is situated in a vacuum chamber and constantly suffers from vacuum enviroment?

Msorich

Yes, you are correct . but why vacuum should make problem for the motor ?

and this motor works in this area from the beginning without any problem and its  about one month that we have this problem . 

on the other machine (bobst metallizer) same motor works with the stogra drive without any problem for 5 years

saeed kolouri

Yes, you are correct . but why vacuum should make problem for the motor ?

Of course it does !

The F30001 and F30021 fit nicely those circumstances, I believe.

Your message isn't clear in terms if it's used a servo motor which was specially designed for vacuum environment and certain vacuum class.

Anyway some words on that matter:Electric motors are used in vacuum, they have to be temperature -resistant and largely free of adhesives.

So I would say that outgassing might play a nasty joke on the servo motor.

Also find in the attachment some more info on that matter.

Msorich