How do I fix and clear Mazak alarm 909?

Check and correct the pitch or the number of threads. Clearing procedure: Tap alarm clear button.

WARNINGAlarm code

909

ILLEGAL PITCH IN FIXED CYCLE (WNo., NNo., BNo.)

Q: What does Mazak alarm 909 mean?

Mazak alarm 909 is "ILLEGAL PITCH IN FIXED CYCLE (WNo., NNo., BNo.)". The pitch or the number of threads designated for the tapping cycle (G74 or G84) of the drilling fixed cycles is wrong. Error type: Registered Data — program or tool data error. Machine state: Feed hold — feed stopped, machine ready.

What it means

The pitch or the number of threads designated for the tapping cycle (G74 or G84) of the drilling fixed cycles is wrong.

What to do

1Check and correct the pitch or the number of threads.

Codebook — decoded

BError typeRegistered Data — program or tool data error

KStop statusFeed hold — feed stopped, machine ready

SClearingTap alarm clear button

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

Still stuck? Ask the Mazatrol assistant →