What does Mazak alarm 311 mean?

Mazak alarm 311 is "SPINDLE CHUCK TIME OVER". The chuck did not close within the time set with the alarm timer. Error type: Machine (PLC) — machine failure. Machine state: Feed hold — feed stopped, machine ready.

How do I fix and clear Mazak alarm 311?

1. Check if the chuck holds the workpiece correctly. 2. If the diameter of the workpiece currently inserted in the chuck is different from that of the previous workpiece, or if the stroke of the chuck jaw has been changed, change the setting of the alarm timer, i. e., time set with the PLC parameter TIM47. Clearing procedure: Fix cause → press RESET.

ALARMSMazatrol Assistant

WARNINGAlarm code

311

SPINDLE CHUCK TIME OVER

What it means

The chuck did not close within the time set with the alarm timer.

What to do

11.
2Check if the chuck holds the workpiece correctly.
32.
4If the diameter of the workpiece currently inserted in the chuck is different from that of the previous workpiece, or if the stroke of the chuck jaw has been changed, change the setting of the alarm timer, i. e., time set with the PLC parameter TIM47.

Codebook — decoded

FError typeMachine (PLC) — machine failure

KStop statusFeed hold — feed stopped, machine ready

OClearingFix cause → press RESET

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

Still stuck? Ask the Mazatrol assistant →