Siemens SINAMICS S120 Device Manual page 268

Maintenance and servicing
6.4 Replacing components
Preparatory steps
● Disconnect the cabinet from the power supply (do not forget the external power supplies).
● Remove the protective cover.
● Allow unimpeded access to the power block.
● Set up the installation device for the power block and keep it at hand (see the section
"Installation device for power blocks").
Removal steps
The steps of the removal procedure correspond to the numbers shown in the figure.
1. Unscrew the connection to the line or to the motor (3 screws).
2. Unscrew the connection to the DC link (4 screws).
3. Remove the retaining screws at the top (2 screws).
4. Remove the retaining screws at the bottom (2 screws).
5. Remove DRIVE-CLiQ cables and connections at -X41 / -X42 / -X46 (6 connectors).
The DRIVE-CLiQ cables should be marked so that they can be correctly connected at a
later time.
6. Take out the retaining screws for the IPD card (2 screws) and remove the IPD card from
connector -X45 on the Control Interface Module.
7. Remove the mount for the Control Interface Module (1 nut) and carefully pull out the
Control Interface Module.
When removing the Control Interface Module, you must disconnect 5 additional
connectors one after the other (2 at the top, 3 at the bottom).
8. Disconnect the plug connections for the fiber optic cables and signal cables (5 plugs) and
release the cable connectors for the signal cables (2 connectors).
9. Disconnect the plug for the thermocouple.
10.Unscrew the 2 retaining screws for the fan and attach the fitting device for the power
block at this position.
You can now remove the power block.
Risk of death due to live parts
Death or serious injury will result when live parts are touched.
Up to 1200 V may still be present on the DC busbar system even after the DC interface
(option L37) has been switched off.
• Avoid touching the DC busbar system.
Note
The power block weighs approximately 196 lb (89 kg).
268
DANGER
Cabinet Modules NEMA
Manual, 04/2014, A5E03586450A