ABB SYN 5201 Operating Instructions Manual page 110

Operating Instructions SYN 5201/SYN 5202
Replacing a SYNCHROTACT 5
If a device is replaced, the circuit breaker must be set to test position or its command
circuit must be interrupted to ensure that it can no longer be actuated.
1. Switch off SYNCHROTACT 5 and isolate all voltages which are still present from the
SYNCHROTACT 5
It must be ensured, by measuring, that no measuring voltages or control voltages >50 V
are present at the terminals before anything is done to the device itself .
2. Rear panel connectors: loosen screws and unplug connectors
3. Loosen fixing clips and remove device from the cut-out
The replacement unit is installed in the reverse order. The commissioning and function
check of the replacement unit is carried out as described in the section on
Commissioning. As soon as the settings are known, these can be used (refer to settings
record).
Replacing individual printed circuit boards
To replace a circuit board, proceed as follows:
1. Isolate all voltages which are still present from the SYNCHROTACT 5
It must be ensured, by measuring, that no measuring voltages or control voltages >50 V
are present at the terminals before anything is done to the device itself .
2. Rear panel connectors: loosen screws and unplug connectors
3. Detach earth strap
4. Loosen all screws on the back cover
5. Pull out defective board
6. Plug in new board in the same position
7. Reassemble in reverse order
Sending the device in for repair
If it has been definitely established that the synchronizer is defective, it must be sent in
for repair. In order to guarantee that repairs proceed smoothly, it is essential that the
questionnaire at the end of the document is filled in and sent to the responsible ABB
department together with a copy of the settings record and the device. If SynView is
used, please also send in the files from the transient recorder, fault/event logger and
diagnostics as well as the parameter settings.
Document No Art Part Language Revision page
abb
3BHS109762 E01 en D 110
ABB Switzerland Ltd
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