Siemens SINAMICS S120 Device Manual page 262

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 previous figure.
1. Unscrew the connection to the DC link (6 screws).
2. Unscrew the connection to the line connection (9 screws).
3. Remove the retaining screws at the top (4 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 mounts for the Control Interface Module (2 nuts) 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 for the thermocouple.
9. 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.
Note
The power block weighs approximately 298 lb (135 kg).
NOTICE
Device damage due to signal cable damage during removal
Signal cables can become damaged when the power block is removed. This can cause the
device to fail.
• When removing the power block, ensure that you do not damage any signal cables.
262
Cabinet Modules NEMA
Manual, 04/2014, A5E03586450A