Condition Comment
START PREPARE The start prepare relay is activated
START RELAY ON The start relay is activated
START RELAY OFF The start relay is deactivated during the start se-
quence
MAINS FAILURE Mains failure and mains failure timer expired
MAINS FAILURE IN
###s
Frequency or voltage measurement is outside the lim-
its
The timer shown is the
Mains failure de-
lay.Text in mains units
MAINS U OK DEL
####s
Mains voltage is OK after a mains failure The timer shown is the
Mains OK delay
MAINS f OK DEL ####s Mains frequency is OK after a mains failure The timer shown is the
Mains OK delay
Hz/V OK IN ###s The voltage and frequency on the genset is OK When the timer runs
out it is allowed to op-
erate the generator
breaker
COOLING DOWN ###s Cooling-down period is activated
COOLING DOWN Cooling-down period is activated and infinite Cooling down timer is
set to 0.0 s
GENSET STOPPING This info is shown when cooling down has finished
EXT. STOP TIME ###s
EXT. START ORDER A planned AMF sequence is activated There is no failure on
the mains during this
sequence
UNEXPECTED GB ON
BB
Another generator breaker is closed onto the busbar
(due to a GB position failure) while no voltage is
present on the busbar
This indicates that oth-
er breakers cannot
close to the busbar be-
cause of position failure
on one or more GBs
AGC 100 Designer's Reference Handbook
4189340766 UK
Additional functions
DEIF A/S Page 89 of 152
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