Manual 37128A GCP-20 Series - Genset Control
© Woodward Page 53/190
Sprinkler Operation
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NOTE
The function "Sprinkler operation" must be assigned to terminal 6.
CAUTION
Please note, that a High-signal must be applied to the terminal 6, in order to make sure that no sprin-
kler operation is effected. With a Low-signal the controller receives the information that the conditions
for the sprinkler operation are given.
NEGATIVE FUNCTIONAL LOGIC!
Sprinkler ON
If the signal drops out at the terminal 6, the sprinkler ON command is triggered. The mes-
sage "Sprinkler" is shown on the display. Up to 6 attempts are made to start the unit (other-
wise 3) if it is not yet in operation. All malfunctions which cause shutoff become messages.
Exception: terminal 61 and overspeed.
NOTE
The terminal 61 (alarm input) maintains the alarm class it was adjusted to. It is advisable to assign the
EMERGENCY OFF here. Via the activation of "Sprinkler operation" (terminal 6), alarm classes F2 and
F3 are converted to alarm class F1. (Exception: terminal 61 and overspeed).
ALARM CLASS F2 AND ALARM CLASS F3 → ALARM CLASS F1
A distinction is made
between three different
operating conditions
1.) Mains circuit breaker closed (mains voltage applied):
• the genset is started
• the GCB is not closed, or not opened
2.) Mains circuit breaker opened (mains voltage not applied):
• the GCB is closed or remains closed
3.) Mains circuit breaker opened (mains voltage applied):
• the MCB is synchronized
• after the synchronization of one power circuit breaker,
the other is opened
G M
Sprinkler
pump
GCB
MCB
Mains
Busbar
Sprinkler OFF
By connecting the sprinkler input, the sprinkler ON-command is reset, but the sprinkler op-
eration is maintained. The message "Sprinkler coasting" appears. Sprinkler operation is
automatically terminated 10 minutes later. Earlier termination can be achieved via the
"STOP" operating mode. On operation, malfunctions which cause shutoffs become active
again.
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