Parameter
Range
Default
Notes
The first step of the blackout recovery sequence is to try to restore power by
closing the bus tie breaker.
Configure this parameter under
Configure > Parameters > Local power management > Return modes > After blackout
.
This parameter is only visible in GENSET controllers. The GENSET controllers may each have different settings for this parameter.
Parameter Range
Default
Notes
Mode
•
No mode change
•
SEMI mode
•
AUTO mode
No mode
change
This parameter selects the controller mode after the blackout.
•
No mode change
: The GENSET controller mode is the same as before the
blackout.
•
SEMI mode
: The GENSET controller is changed to SEMI mode after the
blackout.
•
AUTO mode
: The GENSET controller remains in AUTO mode after the
blackout.
Configure this parameter under
Configure > Parameters > Power management rules > Configuration # > Blackout > Blackout
recovery
, where # is 1 to 8.
Parameter
Range Default Notes
Number of
gensets to start
1 to 64 1
The power management system attempts to start this number of gensets, according to the
priority order. The power management system connects all the gensets that start.
If a genset fails to start, the power management system tries to start the next genset, until the
required number of gensets have started.
If more gensets are connected than the load requires, the load-dependent stop timer starts.
When the timer runs out, the power management system automatically stops the gensets that
are not required.
The system is limited to a maximum of 12 controllers.
Configure this parameter under
Configure > Parameters > Power management rules > Configuration # > Blackout > Short
circuit close attempts
, where # is 1 to 8.
Parameter Range Default Notes
Set point
0 to 1 0
0
close attempts: The power management system will not close any breakers to connect to a system
where a short circuit was detected. The tripped breaker must first be reset. The
GB short circuit
alarm must be acknowledged and the latch reset.
1
close attempt:
In exceptional circumstances
, you may change this parameter to allow one
breaker to attempt to close, even though a short circuit was detected by another breaker. The
breaker that detected the short circuit cannot close. However, one other controller in the section can
try (once) to close its breaker during the blackout recovery.
Alarms
More information
See
Power management
,
Power management protections
,
Blackout detection mismatch
for more information about
the alarm.
DESIGNER'S HANDBOOK 4189340911K UK
Page 244 of 521