Woodward GCP-30 Series User Manual

Manual 37365A GCP-30 Series Packages - Genset Control
© Woodward Page 97/179
Mains Power Monitoring
It is possible for the GCP-30 to monitor a configured mains power limit. If this configured limit is surpassed, it is
possible to energize a relay output by assigning a relay manager function (relay manager function 67) to one of
the freely configurable relays. This functionality makes it possible to initiate external load shedding.
NOTE
This functionality does not initiate a centralized alarm or issue a message to be displayed. An external
device must evaluate the relay output.
WARNING
This function does not provide mains protection.
Parameter 151 and Parameter 156 or an external protection device must be used if mains protection is
re
quired.
Parameter 147
Mains power mon.
ON
Mains power monitoring ON/OFF
ON ................ Mains power monitoring is enabled. Relay manager function 67 must
be assigned to a relay. The subsequent screens of this function are
displayed.
OFF .............. Mains power monitoring is disabled. The subsequent screens of this
function are not displayed.
Parameter 148
Mains power mon.
res.val. I0000kW
Power monitoring threshold value I/E 0 to 9,999 kW
If this threshold value has been exceeded for at least the delay time (Para-
meter 150), the relay assigned relay manager function 67 energizes. Imported pow-
er is entered with a " - " before the value, exported power is entered with a " + " be-
fore the value. If the value is confirmed, the " - " becomes an " I " and the " + "
becomes an " E ".
Parameter 149
Mains power mon.
hysteresis 000kW
Power monitoring hysteresis 0 to 999 kW
To prevent the relay assigned relay manager function 67 from energizing and de-
energizing continuously due to minor load swings, a hysteresis is configured in this
parameter. The value configured here is the amount the monitored power must drop
below the configured threshold in Parameter 148 before the corresponding relay
o
utput will de-energize.
Parameter 150
Mains power mon.
delay 000s
Power monitoring delay 0 to 650 s
For the control unit to recognize that the mains power monitoring threshold has
been exceed, the threshold value configured in Parameter 148 must be exceeded
wi
thout interruption for this period of time.

Woodward GCP-30 Series Specifications

General

Brand	Woodward
Model	GCP-30 Series
Category	Controller
Language	English