Woodward GCP-30 Series User Manual

Manual 37365A GCP-30 Series Packages - Genset Control
© Woodward Page 103/179
Generator Frequency Monitoring
Function: "Generator frequency not within the permissible limits" - 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 271) in order to enable correct generator start-up.
Parameter 168
Gen.frequency-
monitoring ON
Generator frequency monitoring ON/OFF
ON ................ Monitoring of the generator frequency is enabled. The subsequent
screens of this function are displayed.
OFF .............. Monitoring of the generator frequency is disabled. The subsequent
screens of this function are not displayed.
Parameter 169
Gen.overfreq.
f > 000.0%
Threshold value: generator overfrequency 50.0 to 140.0 %
L This value refers to the parameter "Rated freq. in system" (Parameter 9).
If the monitored generator frequency exceeds the configured percentage of the
rated generator frequency for at least the delay time configured in Parameter 170,
an F3 class alarm
is issued.
Issuing of F3 class alarm
Parameter 170
Gen.overfreq.
delay 0.00s
Generator overfrequency delay 0.02 to 9.98 s
For the control unit to recognize that a generator overfrequency fault has occurred,
the threshold value configured in Parameter 169 must be exceeded without inter-
rupt
ion for this period of time.
Parameter 171
Gen.underfreq.
f < 000.0%
Generator underfrequency threshold value 50.0 to 140.0 %
L This value refers to the parameter "Rated freq. in system" (Parameter 9).
If the monitored generator frequency falls below the configured percentage of the
rated generator frequency for at least the delay time configured in Parameter 172,
an F3 class alarm
is issued.
Issuing of F3 class alarm
Parameter 172
Gen.underfreq.
delay 0.00s
Generator underfrequency delay 0.02 to 9.98 s
For the control unit to recognize that a generator underfrequency fault has oc-
curred, the threshold value configured in Parameter 171 must be exceeded without
in
terruption for this period of time.
Engine Overspeed Monitoring
Parameter 173
Engine overspeed
> 0000 rpm
Engine overspeed monitoring 0 to 9,999 rpm
If the monitored engine speed exceeds the generator rated speed (Parameter 276)
for at 0.1 s, an F3 class alarm is issued. The engine overspeed monitoring is per-
formed in addition to and independent of the generator frequency. The Magnetic
Pickup Unit (MPU) must be enabled (Parameter 274) for engine speed monitoring
t
o be performed. If the MPU input is disabled, engine speed monitoring is disabled.
If the monitored engine speed exceeds the rated speed, an F3 class alarm is issued.
Issuing of F3 class alarm

Woodward GCP-30 Series Specifications

General

Brand	Woodward
Model	GCP-30 Series
Category	Controller
Language	English