9.7.8 Replacing the AVT combination module
Removing the AVT combination module
1. Follow "the five safety rules (Page 17)".
2. Detach the cable connections ①.
3. Remove the four fixing screws ② of the AVT combination module.
Figure 9-26 Example of an AVT combination module
Installing the AVT combination module
1. Use the screws ② to secure the AVT combination module.
2. Reconnect the control lines ①. Do not bend the fiber-optic conductors.
9.7.9 Replacing fuses
To replace the -F11, -F12 or -F21 fuses, proceed as follows:
1. Disconnect the auxiliary power supply.
2. Remove the defective fuse.
3. Rectify the cause of the fault.
4. Fit the replacement fuse and close the fuse holder.
The order numbers for replacing fuses that have blown can be found in the spare parts list.
Maintenance
9.7 Repairs
SINAMICS SM150 6SL3845-7NN46-7AA0
Operating Instructions 04/2017 185
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