6.4.3 Island ramp up with load steps
Power [kWh]
Time [sec]
GB closed
Delay, step 1
Power ramp [%/s]
Analogue load share set point
Ramp up, read
from load share
line
Standard load
sharing
One step before the
load share setpoint is
reached the ramp up
function is switched off
Delay, step 2
Delay, step 3
Delay, step 4
Delay, step 5
The genset controller includes a load ramp up function. If enabled, this also controls the load ramp up for analogue load sharing.
When menu 2614 is enabled, the power set point continues to rise in ramp up steps, determined by menu 2615, towards the load
sharing set point. The delay time between each ramp up step will be determined by menu 2613. The ramp up continues until the
load sharing set point is reached. The regulator is then switched to standard load sharing mode.
If the delay point is set to 20 % and the number of load steps is set to 3, the genset ramps to 20 %, waits the configured delay time,
ramps to 40 %, waits, ramps to 60 %, waits and then ramps to the system set point. If the set point is 50 %, the ramp stops at 50 %.
6.4.4 Freeze power ramp
You can use a command in M-Logic (Output, Command, Freeze ramp) to freeze the ramp.
Freeze ramp active:
• The power ramp can be stopped at any point. The set point is maintained as long as the freeze is active.
• If the freeze is activated while ramping from one delay point to another, the ramp is fixed until the freeze is deactivated.
• If the freeze is activated while the delay timer is timing out, the timer is stopped and does not continue until the freeze is
deactivated.
DESIGNER'S HANDBOOK 4189341275A EN Page 113 of 196
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