ABB SYN 5201 Operating Instructions Manual page 19

Operating Instructions
The first time the device is powered up, the device is in BLOCKED status once the
Note
auxiliary voltage is present. By means of a corresponding command, the device can be
set to READY status using the PC tool or the built-in control unit. On the next occasions
the device is powered up, it goes directly into READY status. A start command is only
accepted after the device is powered up (raising edge required).
2.4.2 Normal operating mode, sequences of the synchronization process
Initialisation
After the auxiliary voltage has been applied, the software is initialised. Normally, the
auxiliary voltage is permanently applied (whether or not synchronization is selected) and
the processor is in operation.
Parameter set selection
In devices equipped with the option providing several parameter sets, it is necessary to
select the parameter set via the digital inputs before starting the synchronization
process. The parameter set and the relay for selecting the paralleling points become
active following the Start signal.
In Blocked Without Error status, the selected parameter set is also active and the
corresponding relay is pulled down for selection of the paralleling point. This allows
actual value calibration, paralleling time measurement and matcher test functions to be
carried out very simply.
Selecting synchronization (Start)
By selecting synchronization in ready status (READY), the synchronizing process is
started. The device starts to issue commands and to synchronize.
Stopping synchronization (Stop)
With the command "Stop", the current synchronizing process is interrupted, normally
after a paralleling command has been issued.
2.4.3 Special operating modes
The TEST mode can be used to check the correct function of synchronization by means
of configurable inputs and outputs (provided with the 7 parameter sets option). After
corresponding selection and the Start signal, SYNCHROTACT 5 goes into BLOCKED
status and matches the generator voltage and frequency by means of adjusting
commands. The paralleling command is output not via the command relay but via a
configurable signal relay.
abb
ABB Switzerland Ltd
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