How do I fix and clear Mazak alarm 165?

Close the door to operate the machine. Clearing procedure: Fix cause → tap alarm clear button.

NOTICEAlarm code

165

CANNOT MAKE SAFE OPER SYS ACTIVE

Q: What does Mazak alarm 165 mean?

Mazak alarm 165 is "CANNOT MAKE SAFE OPER SYS ACTIVE". The command signal for the control for safety speed was turned on in the following modes of machining: Threading, Synchronous tapping, Cross machining, Superposition control. Error type: Operation — wrong key or incorrect operation. Machine state: Operation continued — machine still running.

What it means

The command signal for the control for safety speed was turned on in the following modes of machining: Threading, Synchronous tapping, Cross machining, Superposition control.

What to do

1Close the door to operate the machine.

Codebook — decoded

AError typeOperation — wrong key or incorrect operation

LStop statusOperation continued — machine still running

QClearingFix cause → tap alarm clear button

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

Still stuck? Ask the Mazatrol assistant →