How do I fix and clear Mazak alarm 620?

Review the machining program and set the desired surface speed (C-SP).

CRITICALAlarm code

620

CUTTING SPEED ZERO (WNo., UNo., SNo.)

Q: What does Mazak alarm 620 mean?

Mazak alarm 620 is "CUTTING SPEED ZERO (WNo., UNo., SNo.)". Of tool sequence data (except for chip removal), the surface speed (C-SP) is unset or set to "0". Error type: Registered Data — program or tool data error.

What it means

Of tool sequence data (except for chip removal), the surface speed (C-SP) is unset or set to "0".

What to do

1Review the machining program and set the desired surface speed (C-SP).

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.

Still stuck? Ask the Mazatrol assistant →