400 error code

johndib · Jan 3, 2018

Have an older Mazak 7.5 with Fanuc 6M controller. Machine was running fine last week and now this morning when I start it up I get a 400 error code. Code says "The control received the X, Y,or Z axis overload."

What does that mean. Could machine being cold have any effect?

Vancbiker · Jan 3, 2018

Check for blown fuses on one of your axis drives.

johndib · Jan 3, 2018

Vancbiker said:
Check for blown fuses on one of your axis drives.

Spoke with Fanuc. They had me press and hold in the circuit breakers behind the X-Y-Z boards. That did nothing. I then took a photo of the control boards to send to Fanuc. I walked to my office and uploaded and sent them and they said they'd cal me back. Four hours, no call back, but I went back in teh shop after e-mailing photos, turned the machine back on and it worked. What the @#$%? Ran the job and it worked like normal. Machine sat in a cold shop for a week without running. Not sure if that had anything to do with it but...

Vancbiker · Jan 3, 2018

johndib said:
.....They had me press and hold in the circuit breakers behind the X-Y-Z boards. That did nothing.

Ok, that means your drives are probably type M DC. My experience with old Mazaks was on older machines than yours.

The cold shop could possibly contribute to an overload alarm. The axis will be a bit harder to move when really cold. I suspect there are other issues going on that the cold possibly aggravated.

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400 error code

johndib

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johndib

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Vancbiker

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