Siemens SINAMICS S120 Manual page 280

Maintenance and servicing
6.4 Replacing components
Preparatory steps
● Observe the "five safety rules".
● 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
Removal steps
The removal steps are numbered in accordance with the figure above.
1. Unscrew the connection to the DC link (4 screws).
2. Unscrew the connection to the line connection (6 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).
6. Take out the retaining screws for the IPD card (2 screws) and remove the IPD card from
7. Remove the mounts for the Control Interface Module (1 screw and 2 nuts) and carefully
8. Disconnect the plug for the thermocouple.
9. Unscrew the 2 retaining screws for the fan and attach the installation device for the power
You can now remove the power block.
Caution when removing
The power block weighs approx. 65 kg!
When removing the power block, ensure that you do not damage any signal cables.
278
titled "Installation device for power blocks").
The DRIVE-CLiQ cables should be marked so that they can be correctly connected at a
later time.
plug -X45 on the Control Interface Module.
pull out the Control Interface Module.
When removing the Control Interface Module, you have to disconnect 5 additional plugs
one after the other (2 at the top, 3 below).
block at this position.
CAUTION
Cabinet Modules
Manual, 03/2013, A5E03263538A