Installation and operating instruction
Combustion manager W-FM 100 und W-FM 200
6 Operation
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6.10.4 O2 control parameters
Param & Display
O2Ctrl/Limit
GasSettings
OilSettings
ControlParam
The control parameters are fuel specific and must be set separately for each fuel on
dual fuel burners.
PI parameters and time constant Tau
This parameter influences the reaction behaviour of O
2
trim.
Parameters
Function
P Low-Fire
P High-Fire
Proportional part of O
2
trim.
The greater the value set, the faster the regulation will
commence. If the value set is too great the controller
tends to over-oscillate.
I Low-Fire
I High-Fire
Integral part of O
2
trim.
The smaller the value set, the faster the regulation will
commence. If the value is set too small, the controller
tends to oscillate.
Tau Low-Fire
The flue gas reaction time measured during standardisa-
tion in the point set under
LowFireAdaptPtNo
.
Tau High-Fire
The flue gas reaction time measured during standardisa-
tion at 100 % burner capacity.
Partial load adaption point (
LowFireAdaptPtNo
)
Parameter
LowFireAdaptPtNo
determines the load point at which Tau Low-
Fire (flue gas reaction time) is measured. If the flue gas velocity in the current partial
load adaption point is too low, the measurement fails and the next higher point has
to be selected. O
2
trim is not possible below the partial load adaption point set.
Summary of Contents for W-FM 100
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