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Installation and operating instruction
Combustion manager W-FM 100 und W-FM 200
6 Operation
83054802 1/2018-07 La
129-228
6.12.9 Control variable calming
Param & Display
LoadController
ControlParam
MinActuatorStep
In modulating operation, parameter
MinActuatorStep
determines the minimum
correcting element step.
The minimum correcting element step is used as control variable calming. If the dif-
ference between the new control variable and the current control variable is less
than
MinActuatorStep
, the current control variable is maintained. The actuators
are less stressed due to the reduced drive impulses.
If the control variable calming is too great, the control becomes inaccurate or be-
gins to oscillate.
6.12.10 Fault signal suppression
Param & Display
LoadController
ControlParam
SW_FilterTmeCon
Parameter
SW_FilterTmeCon
weakens actual value fault signals.
Actual value fault signals mainly affect the D part. If the filter time selected is too
long it affects the actual value and negatively affects the control accuracy .
Set the filter time to 2 … 4 seconds for automatic adaption. If the time selected is
too long the automatic adaption can be interrupt. On steam plants, increase the fil-
ter time after the adaption to 6 … 8 seconds.