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Okuma MB45 VAE Error code : 1701 Emergency Stop

Turbocnc

Plastic
Joined
Dec 30, 2022
Hi All

I've been scratching my head with this elusive fault, which comes and goes. May be some of you have come across it before or have some idea??
My Okuma MV460VAE starts fine when it has rested for sevaral days with no power, however if I turn it off and restart it I get Error Code: 1701 Emergency Stop.
I get this fault although E Stop has not been touched. This fault usually goes away after the mill has been switched off and power off for several days then when you boot it up and press Reset the error goeas away and will re-appear if you switch off and restart that same day.
Do you have any ideas what this could be ?

Regards
 
If you sure emergency button is healty , just check connections on emergency stop wiring link.
Look at the electrical drawing book.
 
If you sure emergency button is healty , just check connections on emergency stop wiring link.
Look at the electrical drawing book.

Thanks for your comment, I have figured it out. I have studied the electrical diagram for so long that Im now dreaming in schematics.
The fault was caused by By a faulty Contactor (KMPS) on the drawing which has a NC Auxiliary contact that is open due the main contactor sticking.
A new contactor has been ordered and will be fitted, in the mean time just tap the contactor and voila it works :-)

Thanks again
 








 
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