Delay, step 1
Delay, step 2
Delay, step 3
Delay, step 4
Delay, step 5
Power [kW]
GB closed
Time [sec]
Ramp up,
read from load share line
Ramp down
Power ramp
[%/s]
Power set point
Stop signal
Ramp up with load steps
When the GB is closed, the power set point continues to rise in ramp-up steps, determined by the number of steps in menu 2615. If
the delay point is set to 20 % and the number of load steps is set to 3, the genset will ramp to 20 %, wait the configured delay time,
ramp to 40 %, wait, ramp to 60 %, wait and then ramp to the present power set point.
Freeze power ramp
A way to define the ramp up steps is to use the freeze power ramp command in M-Logic.
Freeze power ramp active: The power ramp will stop at any point of the power ramp, and this set point will be maintained as long as
the function is active. If the function is activated while ramping from one delay point to another, the ramp will be fixed until the
function is deactivated again.
1. The power ramp will stop at any point of the power ramp, and this set point will be maintained as long as the function is active.
2. If the function is activated while ramping from one delay point to another, the ramp will be fixed until the function is deactivated
again.
3. If the function is activated while the delay timer is timing out, the timer will be stopped and will not continue until the function is
deactivated again.
INFO
The delay starts running when the GB has been closed.
Power ramp 1
This is the primarily used power ramp. Power ramp 1 is only ignored during "frequency-dependent power droop" or if power ramp 2
is activated with M-Logic.
Power ramp 2
Parameters 2616 and 2623 define the slope of the second power ramp. This is a secondary power ramp mostly used for "frequency-
dependent power droop", but it can also be activated with any M-Logic event. Parameter 2624 (automatic ramp selection)
DESIGNER'S HANDBOOK 4189341275A EN Page 19 of 196
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