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Building Technologies
Basic Documentation LMV5...
CC1P7550en
6 Fuel-air ratio control (FARC)
22.05.2018
6.4.8 Actuator speed in normal operation = OperatRampMod
Modulating operation is possible for both types of fuel, gas and oil.
In the operating position, the dampers are driven to the defined ratio control curves in
accordance with the required output. Up to 15 curvepoints can be defined. The spacing
of the points (difference in output) can be freely selected.
The positions of the curvepoints are calculated by making linear interpolations.
To ensure correct fuel-air ratio control at any time, the actuators travel in steps of
maximum 1.2 seconds. This traveling time corresponds to a positioning angle of 3.6° at
an operating ramp of 30 seconds / 90 °.
For each of these steps, an individual speed is calculated for each actuator, so that all
actuators reach the required positions at the same time.
The position check is always made between the individual steps when the actuators do
not move.
The speed of the fastest actuator can be parameterized.
If there is a curvepoint on the way to the next target on the curve, it will always be
approached.
Β
Note!
When parameterizing the operating ramp, the speed of the
slowest
actuator must be
taken into consideration!
Parameter OperatRampMod
Modulating
