[Rodent73]

Hello all!

I seem to have an issue with my mazak. This morning the Z axis started acting up. Doesn't matter if its moving or not, but every so often it will make a horrible grinding noise and the load meter will register. It got progressively worse until it finally alarmed out.

Any suggestions?

[Al_The_Man]

Counter balance?
Try it with the motor disconnected from load.
Al.

[Rodent73]

I'm not sure what you mean by counter balance.
I talked to Mazak, and they walked me through some things. Turns out the encoders are the same for x and z, so I swapped them. Bet unfortunately the problem remains at Z. Now it looks like it's either the motor or the drive.

[Rodent73]

Turns out it was the drive. <sigh> So, in three to five business days and $2100 Mitsubishi will have it fixed.

The day before it crapped out, there was a thunderstorm. I broke my own rule about shutting everything down and worked through the storm. At one point everything dimmed - lights, lathe rpm's, etc. I bet thats what took it out.

****.