Manual 37278B GCP-30 Series - Genset Control
© Woodward Page 9/174
Chapter 2.
Function
Considerations To Be Taken:
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Different Options
According to a control unit's configuration, different parameters may be displayed and not all parameters will be
available:
• Various inputs and outputs will be present or deleted, corresponding to the control configuration (depending
on your order). Please refer to the wiring diagram and the notes regarding the packages and options contained
in these. Refer to the data plate to see if the corresponding option is contained in the control. If the data plate
has been removed, the configuration screens may be called up in succession and the options may be deter-
mined with the assistance of this manual.
• Specific display screens correspond to specific types of interfaces.
Systems With One Power Circuit Breaker
If a control with a 2-power-circuit-breaker logic [GCP-32] or a 1-power-circuit-breaker logic [[GCP-31] is in-
stalled for use with one power circuit breaker, the following shall apply:
• If the control unit application is to be operated in an isolated operation or an isolated parallel operation (the
MCB is opened), the following signals must be applied:
- "Reply: MCB is open" / "Isolated operation" (terminal 54): HIGH signal (logical "1") and
- "Enable MCB" (terminal 53): LOW signal (logical "0").
- Condition: The Parameter 164 "Emergency power" must be set to "OFF".
•
If the control unit application is to be operated in a mains parallel operation (the MCB always is closed if the
generator operates in mains parallel), the following signals have to be applied:
- "Reply: MCB is open" / "Isolated operation" (term. 54): LOW-Signal (log. "0") and
- "Enable MCB" (terminal 53): HIGH signal (logical "1").
• If the control unit application is to be operated in isolated(parallel) as well as in mains parallel operation (the
MCB can be opened or closed), the following signals have to be applied:
- Reply, that the GCB is closed (terminal 4) and
- Reply, that the MCB is closed (terminal 54) and
- "Enable MCB" (terminal 53)
Case A - The MCB must remain closed (except at an emergency power operation):
The "Enable MCB" (ter-
minal 53) always has to be logical "1".
Case B - The MCB can be opened (also outside an emergency power operation):
The "Enable MCB" (termin-
al 53) must
be set logical "1" if a mains parallel operation has to be established (a synchronization of the
MCB has to be performed). During the synchronization of the MCB (GCP-31: this function is performed ex-
ternally from the controller) the generator frequency is controlled with a slightly higher value than the mains
frequency (df max/2). Additionally a message is displayed on the controller. The "Enable MCB" (terminal
53) has to be logically "0", if the system has to be operated in isolated operation (control of set point frequen-
cy and set point voltage).