Replacing A Power Module With Enabled Safety Function - Siemens Sinamics CU240D-2 DP Operating Instructions Manual

9.2.7

Replacing a Power Module with enabled safety function

Electric shock due to residual charge in the Power Module
After switching off the line voltage, it will take up to 5 minutes until the capacitors in the
Power Module are sufficiently discharged for the residual voltage to be safe. Death or
serious injury will result if energized parts are touched.
• Check the safe isolation of the Power Module connections before carrying out
NOTICE
Motor damage due to interchanged motor connecting cables
The direction in which the motor rotates switches if you exchange the two phases of the
motor line. A motor with an incorrect direction of rotation can damage the machine or
installation. Driven loads with only one permissible direction of rotation include certain
saws.
• Connect the three phases of the motor lines in the right order.
• After replacing the Power Module, check the direction of motor rotation.
Procedure
1. Switch off the line voltage of the Power Module.
You can leave any external 24 V supply to the Control Unit switched on.
2. Remove the connecting cables of the Power module.
3. Remove the Control Unit from the Power Module.
4. Replace the Power Module.
5. Mount the Control Unit onto the new Power Module.
6. Connect up the new Power Module using the connecting cables.
7. Switch on the line supply and, if necessary, the 24 V supply of the Control Unit.
8. The inverter reports F01641.
9. Perform a reduced acceptance test
You have successfully replaced the Power Module.
❒
Converter with the control units CU240D-2
Operating Instructions, 04/2018, FW V4.9 SP10, A5E34262100B AF
WARNING
installation work.
Reduced acceptance test after function expansions (Page 163)
Corrective maintenance
9.2 Replacing inverter components
297