Siemens SINAMICS S120 Equipment Manual page 453

Preparatory steps
● Disconnect the drive line-up from the power supply
● Allow unimpeded access to the power block
● Remove the protective cover
Removal
The removal steps are numbered in accordance with the numbers in the diagram.
1. Unscrew the connection to the DC link (four screws).
2. Unscrew the connection to the line connection (six screws).
3. Remove the retaining screws at the top (two screws).
4. Remove the retaining screws at the bottom (two screws).
5. Remove DRIVE-CLiQ cables and connections at –X41/–X42/–X46 (six connectors).
The DRIVE-CLiQ cables should be marked to ensure that they are subsequently correctly
inserted.
6. Take out the retaining screws for the IPD card (two screws) and remove the IPD card
from plug -X45 on the Control Interface Module.
7. Remove the mounts for the Control Interface Module (one screw and two nuts) and
carefully pull out the Control Interface Module.
When removing the Control Interface Module, you have to disconnect five additional
plugs one after the other (two at the top, three below).
8. Disconnect the plug for the thermocouple.
9. Unscrew the two retaining screws for the fan and attach the equipment for assembling the
power block at this position.
You can now remove the power block.
Note
The power block weighs approx. 65 kg!
NOTICE
Damage to the device if signal cables become damaged 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.
Air-cooled chassis power units
Manual, 07/2019, 6SL3097-4AE00-0BP9
Maintenance and Servicing
11.4 Replacing components
451