INFO
For a general description of the available running modes, see Running modes.
2.4.4 Island operation
Auto mode description
The controller automatically starts the genset and closes the generator breaker at a digital start command. When the stop command
is given, the generator breaker is tripped, and the genset will be stopped after a cooling down period. The start and stop commands
are used by activating and deactivating a digital input or with the time-dependent start/stop commands. If the time-dependent start/
stop commands are to be used, then the auto mode must also be used.
Semi-auto mode description
When the generator breaker is closed, the controller will use the nominal frequency as set point for the speed governor. If AVR
control is used, the nominal voltage is used as set point.
INFO
For a general description of the available running modes, see Running modes.
2.4.5 Power ramp
"Power ramp up" (parameter 261x) and "Power ramp down" (parameter 262x) are used when the genset is connected to another
supply source.
2610 Power ramp up
Ramp speed 1 Defines the slope of ramp up 1
Delay point At this point, the ramp up is cancelled until the delay has expired
Delay When this delay has expired, the ramp up is continued from the delay point
Island ramp Enable ramping in Island mode
Steps Defines the number of ramp steps
Ramp speed 2 Defines the slope of ramp up 2
2620 Power ramp down
Ramp speed 1 Defines the slope of ramp down 1 (used for de-load as well)
Breaker open point The amount of power accepted when opening the breaker
Ramp speed 2 Defines the slope of ramp down 2 (not used for de-load)
Automatic ramp selection When "Auto ramp select" is disabled, ramp 2 can only be enabled with M-Logic
DESIGNER'S HANDBOOK 4189341275A EN Page 18 of 196
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