Siemens SINUMERIK 828D Service Manual page 141

Preconditions:
● The module is defective and must be replaced.
● The control cabinet is in a no-voltage condition, all of the connectors and cables are
Removing
Figure 4-28
NOTICE
Electro-static discharge (ESD)
Before you touch the module, discharge yourself at the cabinet or at the ground terminal.
Procedure:
1. Before withdrawing it, label the connector X524 for the electronics power supply.
2. Screw on the encoder connecting cable to X520 or X521 / X531, if required, also the
3. Release the protective conductor connection and write the position designation on the
Hardware and Software
Service Manual, 03/2010, 6FC5397-5DP20-0BA0
labeled.
SMC30 removal
shield connection.
cable.
Service cases - hardware
4.11 SMC20 / SMC30
141