AGC Designer’s Reference Handbook
DEIF A/S Page 46 of 168
Stop sequence, description
The stop sequence will be activated, if a stop command is given. The stop sequence includes
the cooling-down time, if the stop is a normal or controlled stop.
Description Cooling-down Stop Comment
Auto mode stop X X
Trip and stop alarm X X
Stop button on display X Semi-auto or manual.
Remove ‘auto start/stop’ X X Auto mode: Island operation, fixed
power, load take over, mains power
export.
Emergency stop X Engine shuts down and GB opens.
The stop sequence can only be interrupted during the cooling-down period. Interruptions can
occur in these situations:
Stop failure alarm
A stop failure alarm will occur, if the running feedback or the generator voltage and frequency
are still active. The stop failure timer is adjusted in
6220 Stop failure
. Output A (OA) and output B (OB) in this menu indicate the relay output(s) that will be activated
at a stop failure alarm.
Breaker sequences
The breaker sequences will be activated depending on the selected mode:
Mode Gen-set mode Breaker control
Auto All Controlled by the unit
Semi-auto All Push-button
Manual All None
Block All None
Event Comment
Mains failure AMF mode selected (or mode shift selected ON) and auto
mode selected.
Start button is pressed Semi-auto mode: Engine will run in idle speed.
Binary start input Auto mode: Island operation and fixed power, load take over or
mains power export.
Exceeding setpoint Auto mode: Peak shaving.
GB close button is pressed Semi-auto mode only.
The stop sequence can only be interrupted during the cooling-down period.
When the engine is stopped, then the speed governor output is reset to the
offset value if option E1 or EF2 is selected, or the initial value if option EF3/EF5
is selected and the PWM output is used. Please refer to the descriptions of the
mentioned options.
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