Siemens SINAMICS S150 Operating Instructions Manual page 437

Preparatory steps
● Disconnect the cabinet unit from the power supply.
● Allow unimpeded access to the power block.
● Remove the protective cover.
Removal
The steps for the removal procedure are numbered in accordance with the diagram.
1. Remove the busbar (6 screws).
2. Unscrew the connection to the DC link (8 nuts).
3. Remove the retaining screw at the top (1 screw).
4. Remove the retaining screws at the bottom (2 screws).
5. Disconnect the plugs for the fiber optic cables and signal cables (2 plugs).
6. Remove the connection for the current transformer and associated PE connection (1
7. Unscrew the two retaining screws for the fan and attach the tool for de-installing the
You can now remove the power block.
CAUTION
When removing the power block, ensure that you do not damage any signal cables.
Installation
For re-installation, carry out the above steps in reverse order.
CAUTION
The tightening torques specified in the table "Tightening torques for connecting current-
carrying parts" must be observed.
Carefully re-establish the plug connections and ensure that they are secure.
The screwed connections for the protective covers must only be tightened by hand.
Drive converter cabinet units
Operating Instructions, 07/07, A5E00288214A
plug).
power block at this position.
Maintenance and servicing
11.4 Replacing components
437