Manual 37259C
SPM-D11 - Synchronizing Unit
© Woodward
Page 59/79
Phase matching
Gain 00
Zero phase control = ON
Phase matching control gain
1 to 36
This configuration screen only appears, if the phase matching control is configured
ON!
When phase matching control is enabled, this gain determines how much the output
signal is changed depending on phase difference. By increasing the gain, the re-
sponse is increased to permit larger corrections to the variable to be controlled re-
sulting in longer ON time periods. The farther out of tolerance the process is the
larger the response action is to return the process to the tolerance band. If the gain
is configured too high, the result is excessive overshoot/undershoot of the desired
value.
Prior to setting the value for this gain, the frequency controller must be enabled and
properly adjusted.
Phase matching
df start 0.00Hz
Zero phase control = ON
Differential frequency for starting phase matching control
0.02 to 0.25 Hz
This configuration screen only appears, if the phase matching control is configured
ON!
The phase matching control is not enabled, until the differential frequency between
generator and busbar/ mains is lower than the value configured here.
Synchronization Time Monitoring
Sync.time contr.
Alarm ON
Synchronization time monitoring
ON/OFF
ON
................ This setting ensures that the synchronization time is monitored. A
timer is started when synchronization is initiated. If the circuit
breaker has not closed prior the timer expiring, the warning message
"Synchronization time" is displayed. In addition, the synchronization
procedure is cancelled and the "Ready for operation" relay is de-
energized. By pressing the "Clear" button for at least 3 seconds or by
removing one of the conditions which are necessary for the synchro-
nization (e.g. terminal 3 "Release CB"), the synchronization timer is
reset. The following screens of this function are displayed.
OFF
.............. The synchronization time will not be monitored. The following
screens of this function are not displayed.
Sync.time contr.
Delay time 000s
Final value for synchronization time monitoring
10 to 999 s
Please refer to the above description of the configuration screen.