Woodward GCP-20 Series User Manual

Manual 37128A GCP-20 Series - Genset Control
Page 116/190 © Woodward
Generator Frequency Monitoring
Function: "Generator frequency not within the permissible range" - The generator frequency is outside of the
limit values set for overfrequency or underfrequency. The engine is shut down immediately (class F3 alarm), and
an alarm message is displayed. The activation of generator underfrequency monitoring is delayed by means of
"Delayed engine monitoring" (
Parameter 274) in order to enable correct generator start-up.
Parameter 162
Gen.frequency-
monitoring ON
Generator frequency monitoring ON/OFF
ON................Monitoring of the generator frequency will be performed. The subse-
quent parameters of this function are displayed.
OFF..............Monitoring is disabled, and the subsequent screens of this function
are not displayed.
Parameter 163
Gen.overfreq.
f > 00.00Hz
Threshold value: generator overfrequency 40.0 to 85.0 Hz
If this threshold value has been exceeded for at least delay time (Parameter 164),
the following alarm class is initiated.
Issuing of class F3 alarm
Parameter 164
Gen.overfreq.
delay 0.00s
Generator overfrequency delay 0.02 to 9.98 s
For the control unit to recognize a generator overfrequency fault condition, the
threshold value configured in
Parameter 163 must be exceeded without interruption
for this period of time.
Parameter 165
Gen.underfreq.
f < 00.00Hz
Generator underfrequency threshold value 40.0 to 85.0 Hz
If the current value has been fallen below this threshold value for at least the delay
time (
Parameter 166), the following alarm class is initiated.
Issuing of class F3 alarm
Parameter 166
Gen.underfreq.
delay 0.00s
Generator underfrequency delay 0.02 to 9.98 s
For the control unit to recognize a generator underfrequency fault condition, the
threshold value configured in
Parameter 165 must be exceeded without interruption
for this period of time.
Engine Overspeed Monitoring
Parameter 167
Motor over speed
> 0000 rpm
Engine overspeed monitoring 0 to 9,999 rpm
The overspeed monitoring is performed in addition to and independent of the
generator frequency if the Magnetic Pickup Unit (MPU) has been enabled (
Para-
meter 276). If the MPU has been disabled, the monitoring is disabled. If this
threshold value is been exceeded the following alarm class is initiated.
Issuing of class F3 alarm

Woodward GCP-20 Series Specifications

General

Brand	Woodward
Model	GCP-20 Series
Category	Control Unit
Language	English