CNC Repair Basics: Electro-mechanical Relays
Before you can really do any effective electrical troubleshooting on a machine, it would be best to have a basic understanding of relays and how they work. Most importantly, the difference between relay coils and contacts.
Machine Repair Procedure: Turret Zero Return Method for Mori Seiki Lathes (Servo-driven Turret Type) with Fanuc CNC Control
In the event that you need to adjust (or have lost) the turret zero-return position on a Mori Seiki lathe with a servo-driven turret, you will find the follwing information useful. Adjustment may be needed after a crash involving the turret.