AGC Designer’s Reference Handbook
DEIF A/S Page 70 of 168
When the feedback is not activated, the breaker cannot close. The LED above the breaker
symbol will be flashing (yellow), and the AGC will not attempt to issue a close signal before the
spring load feedback is on.
Timer-controlled
On breakers where no feedback can be issued when the spring is in loaded position, timer
settings can be used instead. There are timers for all breakers that can be controlled by the
AGC, i.e. the generator breaker (menu 6252), the mains breaker (menu 6615) and the tie
breaker (option G5, menu 7632).
When the timers are counting, then the remaining time is shown in the display, the LED above
the breaker symbol will be flashing (yellow) and the AGC will not attempt to issue a close signal
before the timer has expired.
Alarm inhibit
The purpose of the alarm inhibit function is to avoid nuisance alarms when the gen-set is in a
controlled operational state (stop). For example it is not necessary to have the low lubricating oil
pressure alarm displayed when the gen-set stops.
Four possibilities exist for the alarm inhibit functionality:
1. Digital input 23 can be used.
2. The alarms can be given
RUN status.
3. Selectable alarms can be given
Parallel status.
4. Selectable alarms can be ‘custom inhibit’ by using a configurable input in the utility SW.
Digital input 23
The functionality of the alarm inhibit input is indicated in the table below:
The inhibit LED on the unit and on the display will activate when the voltage is
below 30% of the nominal voltage.
On the AGC mains unit (option G5) the spring load feedback from the tie breaker
can be connected instead of the GB spring load feedback.
To Next Page
Loading...
Need help?
General
