Z59 High engine torque, no speed ! ! !

Hello everyone,

I have a Deckel Maho DMU 60e machine. I had a problem with the " e60 ready signal axes low" error which means the UV130 converter is damaged.
So I bought a Uv130 converter and the error went away. However, another problem was encountered.

Error:
# 11 Sysfail is active
Z59 High motor torque, no speed.

Error occurs when you try to return to the home position.So I tried to go back to the home position one axis at a time, but when I tried the Z axis I threw- z59, with the X axis- x59, with the Y axis- y59. Even if the hydraulics are on but have not yet returned to the home position, try turn the spindle by hand throw the error S59. I raised the Z position manually(because I think the Z axes is too low) but that didn't help and caused another error. If you try to switch on the hydraulics, the Z motor brakes are released, the table falls down and suddenly the brakes are applied again and the error "Z07 drifting outside the motionless window" is triggered.

Perhaps someone is confronted with this, perhaps you can guess what the problem is, and all information is helpful.

Thanks in advance.

On a DMU60 with Heidenhain I've seen (and never been able to fix, have to just live with it) the following, which MIGHT give intuition to your problem:

Some of the motors have 2 (or more) different sensors on them. So judging by the text of the error message, we can imagine that in your machine a motor current sensor is reporting "lots of current" while an RPM sensor has failed causing the controller to "think" that it's applying a lot of current but the motor isn't turning -> badly stalled or stuck.

So one thing would be to be sure the motors are actually getting current. And the second thing would be to be sure that various speed sensors are working, the speed is being seen by the controller.

Or, at least, that's where I would start.

Hello,

Thanks for the reply. I think the problem is somewhere in the controller because it can't be that all engine sensors are bad. Because at least one axis would return to the home position.
But like you said that in machine a motor current sensor is reporting "lots of current" while an RPM sensor has failed causing the controller to "think" that it's applying a lot of current but the motor isn't turning -> badly stalled or stuck. This shows the axes info table how the current rises on the axis and they do not move at all, but when the current reaches a critical limit, an error is thrown.
I am attaching a video.