What does Mazak alarm 351 mean?

Mazak alarm 351 is "START ERROR (SPINDLE MISS CHUCK)". Automatic operation was started when the spindle chuck was not fully closed. Error type: Operation — wrong key or incorrect operation. Machine state: Operation continued — machine still running.

How do I fix and clear Mazak alarm 351?

1. Check if the chuck holds the workpiece properly. 2. Check if the chuck opening/closing sensor works normally when a workpiece is set in the chuck. If necessary, adjust the position of the sensor.

ALARMSMazatrol Assistant

NOTICEAlarm code

351

START ERROR (SPINDLE MISS CHUCK)

What it means

Automatic operation was started when the spindle chuck was not fully closed.

What to do

11.
2Check if the chuck holds the workpiece properly.
32.
4Check if the chuck opening/closing sensor works normally when a workpiece is set in the chuck.
5If necessary, adjust the position of the sensor.

Codebook — decoded

AError typeOperation — wrong key or incorrect operation

LStop statusOperation continued — machine still running

P, SClearingunspecified

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

Still stuck? Ask the Mazatrol assistant →