EGR FC
System menu
Boiler
Air damper/blower fan
Frequency converter
EGR FC
FGR elapse time (P110)
Specifies the maximum speed of changes to the control.
Peaks are attenuated thus protecting the fans.
FGR run-up time (P109)
Specifies the maximum speed of changes to the control.
Peaks are attenuated thus protecting the fans.
FGR maximum frequency (P105)
Maximum frequency to which the motor can be controlled.
FGR minimal frequency (P104)
Minimum frequency to which the motor can be controlled.
FGR nominal motor voltage (P101)
Nominal voltage of motor according to identification plate.
FGR nominal motor current (P103)
Nominal current of motor according to identification plate.
5.3.5 Lambda probe
Settings
System menu
Boiler
Lambda probe
Settings
Residual oxygen content setpoint
Specifies the required residual oxygen content in percent.
O
2
control band
The raw control value of the secondary air is calculated
from the O
2
control band. Half of the range is above and
half below the O
2
setpoint. If the O
2
setpoint is, for
example, 9% and the O
2
control band is 4%, an O
2
value of
7% equates to a control band of 100% and an O
2
value of
11% equates to a control band of 0%.
No infeed below residual oxygen content
Specifies the residual oxygen content in percent under
which the material infeed is stopped.
Max. residual oxygen content before combustion ceases
Specifies the residual oxygen content in percent from
which the combustion is no longer recognised.
Autocalibration
Activate/deactivate the autocalibration of the Lambda
probe.
Autocalibration after time at “Off” status
Once the set time in hours in the “Off” operating status has
elapsed, calibration of the Lambda probe starts
automatically.
Menus and parameters
5
Boiler
Service manual SPS 4000 | B0960622_en
47