The EMERGENCY genset controller does NOT start the blackout response if:
• The EMERGENCY genset controller is under switchboard control.
• Harbour operation is active.
• The EDG not ready for blackout alarm is active.
• The Extended stop timer is running.
• There is a stop coil failure.
More information
See EMERGENCY genset controller, Emergency genset configurations for more information.
Parameters
Configure this parameter in Parameters > Busbar > AC setup > Blackout detection.
Parameter name
Range Default Comment
Blackout delay 0 s to 1 h 15 s
The time the EMERGENCY genset controller waits before starting the emergency genset
during a blackout.
Configure this parameter in Parameters > Local power management > Emergency generator > Blackout handling.
Parameter
name
Range Default Comment
Blackout
control
• Open TB and start
engine
• Start engine and
open TB
Open TB and
start engine
• Open TB and start engine: When a blackout is detected, open the
TB after the Blackout delay. Then, when the TB is open, start the
emergency genset engine.
• Start engine and open TB: When a blackout is detected, start the
emergency genset engine after the Blackout delay. Then, when the
engine is running, open the TB.
Configure this parameter in
Parameters > Busbar > AC setup > Voltage and frequency OK.
Parameter name
Range Default Comment
Frequency and voltage OK 0 s to 1 h 5 s
The time the EMERGENCY genset controller waits before closing the tie breaker
after a blackout.
Switchboard control and blackout
An activated Mode > Switchboard control digital input on the EMERGENCY genset controller forces the controller under switchboard
control. In this case, the emergency genset will not start automatically during a blackout.
Some system alarms can also force the EMERGENCY genset controller under switchboard control. For example: Controller not part
of system and Different single-line configurations.
Apart from these, the EMERGENCY genset controller is not forced under switchboard control by the alarms that force the other
controllers under switchboard control, or by the Power management > Force all controllers in section to SWBD control input. This
means that the EMERGENCY genset controller is always ready to handle a blackout.
DESIGNER'S HANDBOOK 4189340911K UK Page 340 of 521
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