Originally Posted by
zavateandu
i had this alarm on a lathe too,was tripped veore the cnc gets on,during boot.
In my machine i had 2 big actuators for spindle,one called low winding and one called high windind.
Every actuator had an auxiliary contact on the side with a 24v circuit and because i had a short on the 24v circuit that contact did not send the info to spindle driver that the actuator was on and after some seconds the driver gets AL 12.
So go on this lead and check the auxiliary contacts from spindle power.