Posted on 21st August 2018
XYZ CT52 Lathe with Siemens 828DSL & Sinamics drives. A hardware fault of active encoder on Z axis alarm was identified.
We quickly diagnosed the problem and a new encoder was sourced and fitted, don't try this at home! It was very complicated to align the Encoder Commutational angle and centralise it to prevent any following errors.
All this was done without removing the motor from the customer's machine. The Z axis reference position was reset, a new NC archive was made and the machine was making swarf again in no time.