My machine has started to come up with the alarm code 123. The last job I did I heard the RPM drop about 30 Rpm every once in a while. Now the alarm trips sporadically. It may go off within a few minutes or it could be an hour. Most of the time it does it when it's idle. Could this be an in put power fluctuation or would this be a machine problem? I have checked the 3 Ph power and all phases are 237-240. I have had the machine for about a month and its a 2001 VF-3, 20 HP, 7500 spindle. There are no blown fuses and the motor fan is working, although 1 of the 2 fans on the vector drive is dead.
Any help would be great.
Thanks Stephen