1. Stop the drive and do the steps in section Electrical safety precautions (page 21)
before you start the work.
2. Remove the shrouding above the module bay (in front of the DC fuses).
3. Remove the DC fuses and the busbar assembly connecting the fuses to the inverter
module. Store these parts – they are to be reinstalled only with the inverter module.
Make note of the order of washers.
4. Remove the faulty module from its bay. See the module replacement instructions.
5. Install the air baffle (included) to the underside of the top module guide:
• Fasten the front edge of the baffle to the module mounting holes using the
module mounting screws (2 × M8). Tighten to 9 N·m (6.6 lbf·ft).
• Fasten the left/right sides of the baffle using M4 screws wherever possible.
(This depends on the location of the module in the cubicle.) Tighten to 1…2 N·m
(0.7 … 1.5 lbf·ft).
6. If the inverter control unit (A41) is powered from the faulty module, connect the
power supply wiring to another module using the extension wire set included.
7. If the Safe torque off (STO) function is in use, install the jumper wire set included
in the STO wiring in place of the missing module. (This is not needed if the module
was the last on the STO wire chain.)
8. Reinstall all shrouding removed earlier.
Note: Do not reinstall the DC fuses or busbars but store them elsewhere until the
module can be reinstalled.
9. Switch on the power to the drive.
10. Enter the number of inverter modules present into parameter 95.13 Reduced run
mode.
Maintenance 211
To Next Page
Loading...
