How do I fix and clear Mazak alarm 189?

Check the direction of rotation set for the tool selected in the manual program unit and select a correct tool. Alternatively, set TC144 bit3 to “0” to enable automatic output of the spindle rotation command. Clearing procedure: Fix cause → Power OFF → Power ON.

ALARMSMazatrol Assistant

CRITICALAlarm code

189

ILLEGAL SPINDLE DIRECTION (WNo., UNo., )

Q: What does Mazak alarm 189 mean?

Mazak alarm 189 is "ILLEGAL SPINDLE DIRECTION (WNo., UNo., )". The directions of rotation of the turning tool selected in the manual program unit and the spindle do not match. Error type: Spindle — spindle control mechanism malfunction. Machine state: Feed hold — feed stopped, machine ready.

What it means

The directions of rotation of the turning tool selected in the manual program unit and the spindle do not match.

What to do

1Check the direction of rotation set for the tool selected in the manual program unit and select a correct tool.
2Alternatively, set TC144 bit3 to “0” to enable automatic output of the spindle rotation command.

Codebook — decoded

DError typeSpindle — spindle control mechanism malfunction

KStop statusFeed hold — feed stopped, machine ready

NClearingFix cause → Power OFF → Power ON

Still faulted after these steps? Do not restart under load — ask the Mazatrol assistant.

Still stuck? Ask the Mazatrol assistant →