Maintenance 121
Replacing power module fuse on a module of frame size R1 - R3
Replacement of a power module frame size R4 - R6
The replacement procedure is basically the same for power modules of frame size R1-R3.
The main difference is the weight of the module types. Replacement power modules must
always be of the same type.
Dismounting
1. Stop, de-energize and ground the drive following the steps in section Shutting down
the drive for maintenance before you start the work.
2. Switch off all miniature circuit breakers in the control compartment.
3. Ground the power modules according to Grounding power module with grounding
hook on page 107.
4. Disconnect the fiber optic links from the power module.
5. Loosen and detach the three power cables and the two busbars behind the cables.
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