To replace the contactors, proceed as follows:
1. Loosen the cables. To do so, unscrew the screws.
2. Remove the contactor from the DIN rail.
3. Snap the new contactor onto the DIN rail.
4. Reattach the cables. Adhere to the markings. Do not interchange the cables.
5. Re-connect the protective circuit after replacing a contactor. Refer to the circuit diagrams to
help you. You will find these in the section headed "Overview diagram, circuit diagram,
terminal diagram" in the "Power Unit Circuit Manual".
9.6.5
Replacing the current transformer
The current transformers measure the current in the input phases and output phases. The
current transformers
①
are located on insulating cylinders
②
.
The current transformers can be accessed only from the rear.
Figure 9-4
Current transformers and insulating cylinders
Preparing for removal
To prepare for removal, proceed as follows:
1. Observe the five safety rules.
2. Remove the rear panel of the converter.
Maintenance
9.6 Repairs
3rd Party LCI Control Upgrade
Operating Instructions, 02/2022, A5E31872818
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