Maintenance And Faults - ABB SYN 5201 Operating Instructions Manual

Operating Instructions
9

Maintenance and faults

9.1 Maintenance
SYNCHROTACT 5 does not require any maintenance. Since the synchronization is not
used for most of the time but the microprocessors are permanently in operation, it is
possible to detect a fault in good time before the next use and rectify it. In order to detect
faults which only occur during synchronization in good time before use, test
synchronizing is recommended (TEST mode or external test circuit). However, the
machine must be available for this purpose.
9.2 Faults
9.2.1 General
SYNCHROTACT 5 devices operate with in some cases dangerous voltages (>50 V),
e.g. voltage transformer inputs up to 170 VAC and relay outputs up to 250 VAC/VDC.
Manipulations carried out on these parts can cause death or injury to the persons
involved or damage to surrounding objects. If handled correctly and in the proper
environment, as described in these instructions, there is no risk.
All relevant regulations must be observed during fault-rectification. It is essential that
these safety regulations are read before starting any work on the SYNCHROTACT 5
equipment.
If work is being carried out in the environment of the SYNCHROTACT 5, e.g. on the
relay controls, electronics power supply, synchronizing instruments, all voltages greater
than 50 V which are connected to the system must be switched off. In order to prevent
open voltage circuits being accidentally closed by third parties, the circuits in question
should be marked at the disconnection point (e.g. with a warning sign).
Before switching on again, all connectors must always be plugged in.
Caution
9.2.2 Troubleshooting
A fault message from the SYNCHROTACT 5 refers not only to internal causes but also
to external ones. It is therefore important to make sure that the environment of the
synchronizer is in order before sending the device in for repair (pointlessly).
The following situations can be distinguished:
1. SYNCHROTACT 5 is in error status (ERROR LED and remote display contact
ERROR): Try to locate the cause with the aid of the fault and event table in section
9.2.3.
abb
ABB Switzerland Ltd
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