Siemens SINAMICS S150 Operating Instructions Manual page 435

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. Unscrew the connection to the outgoing motor section (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 the CU320 mount (1 nut). If necessary, remove the PROFIBUS plug and
6. Disconnect the connectors for the fiber optic cables (5 plugs) and release the cable
7. Disconnect the plug for the thermocouple.
8. 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
connection to the operator panel (-X140 on the CU320) and carefully remove the CU320.
connection for the signal cables (2 connectors).
power block at this position.
Maintenance and servicing
11.4 Replacing components
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