ALARMSMazatrol Assistant
CRITICALAlarm code
793

ILLEGAL MILL SPINDLE RPM (WNo., UNo., SNo.)

What it means

If DRILL is selected as the turning drilling unit tool: 1. The milling spindle speed is less than the turning spindle speed when the rotation direction set in the tool sequence is the same as that of the milling spindle. 2. The milling spindle speed has exceeded the maximum rotation speed (SA1 to SA8) when the rotation direction set in the tool sequence is the same as that of the milling spindle. 3. The milling spindle speed is set to a negative value when the rotation direction set in the tool sequence is opposite to that of the milling spindle. 4. When the direction of rotation in the tool sequence is the opposite of the direction of mill spindle rotation, the turning spindle speed matches the relative speed calculated from the surface speed.

What to do
  1. 11.
  2. 2Reduce the spindle speed for the turning spindle.
  3. 32.
  4. 4Set the milling spindle speed to a value lower than its maximum spindle speed.
  5. 53.
  6. 6Reduce the spindle speed for the turning spindle.
  7. 74.
  8. 8Reduce the spindle speed for the turning spindle.
Codebook — decoded
BError typeRegistered Data — program or tool data error
I (L)Stop statusunspecified
O (S)Clearingunspecified
Still faulted after these steps? Do not restart under load — ask the Mazatrol assistant.
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