[riddmj]

How do I reset this alarm?

Alarm 391 "Thermal Displacement Offset Error"

[jimiscnc]

I know this is a lame answer, but you should call your local mazak tech center. www.mazakusa.com should be able to locate the right office for your geography.


Some recent and current Mazaks have a few thermo couples around the machine that are feeding some complex algorythms to make the machine more accurate as parts of the machine are changing temperature.

go for the simple stuff first, but you may have a broken wire to a thermo couple to cause this alarm?

There is a possibility that a parameter can turn off this alarm until you can get the problem attended to.

thermo comp on Mazaks is rocket scientist domain.

jim

[riddmj]

thanks for the reply,

I finally was able to get through to someone at Mazak.

What triggers the 391 Alarm is from a multiple possibilities,

thou to get back up and running, you need to reset Words R4630 to R4639
back to '0', by writing to these under the Diagnositics Monitor screen.

Cause still unknow, speaking with some co-worker from other facilities, they believe it maybe from line power loss, for example from an electrical storm.
But our location has also been know to power interuptions from our hydro supply company.

[robertlonan]

Kindly advice me to solve alarm 391 in Mazak integrex-400