Manual 37259C
SPM-D11 - Synchronizing Unit
Page 28/79
© Woodward
Control Outputs
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Synchronization pulse:
Command: Close CB
Terminals 14/15
Energizing this relay will close the CB. The relay de-energizes after the
close pulse is output. Exception: "Synch-check" operating mode.
Readiness for operation
Terminals 18/19
The relay contact is closed when the control is ready for operation. The re-
lay will de-energize if any of the following occurs:
a) The internal self-monitoring system signals an alarm condition. In this
case a trouble-free function of the control cannot be guaranteed and
other appropriate corrective measures must be taken.
b) The synchronization time monitoring system is enabled and the config-
ured time has expired before synchronization has occurred.
Command: open CB
(for shut down)
Terminal 39/40
The contact for this function is a N.O. contact. In normal operations, this
contact is continuously energized. It is de-energized when the "Shut down"
function is enabled.
Prerequisites:
•
The parameter "Download and open GCB" is configured to ON
•
The circuit breaker is closed
The controller can be configured to perform a shutdown function in the fol-
lowing manner:
•
Terminal 3 "Enable CB" is re-energized, initiating the shutdown
•
The power will be reduced
•
When the real power falls below 10 % of the generator rated power,
the relay "Command: open CB" will open
This relay is reserved for shut down functions and operates independently
from the watchdogs.
Power limit
Terminal 16/17
This relay serves for controlling the power to a configured limit. The relay
opens when the power limit value is exceeded for the configured time and
closes again, when the power falls below the limit value minus the config-
ured hysteresis. Using this relay, it is possible for example to disconnect lo-
ads or activate further generators.
