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11.9 Detailed parameter descrip-
tions
Group
Par.
Denomina-
tion
Description
Control
1-1
Steam output
limitation
Steam output limitation allows scaling down the max.
(steam) output within a range of 25 to 100 %, which may
be necessary for a better control performance. The
actual steam output is determined by the control sig-
nal.The steam output can be set to a value between 25%
and 100% of nominal output using the steam generation
output limitation. The actual steam output released
depends on the control signal. Limitation of the steam
output may be needed for better control.
1-2
Control signal
This parameter tells the unit control software what kind
of control signal is wired. Also, the control characteristic
is defined. These are the setting options:
1 = external controller, 0...10 V
2 = external controller, 0...20 mA
3 = external controller, 0...140
Ω
4 = PI controller, 0...10 V
5 = PI controller, 4...20 mA
6 = PI controller, 0...140
Ω
7 = 1-step
8 = Modbus
1-3
Correction of
input stages
This parameter allows for an active humidity sensor cali-
bration in the range from
-5% r.h. to +5% r.h. .Using this
parameter, you can calibrate the active humidity sensor
at terminals 3-5 in a range from -15% RH to +15% RH.
1-4
Filter input
stage
This parameter allows for switching the damping of the
input low pass filter from „light“ to „strong“.
With a capac-
itive humidity sensor, increasing the input damping is
meaningful for improving the signal-to-noise ration and
for reducing the oscillating tendency.
Blow-down
2-1
Correction
partial blow-
down
In case of high electrical conductivity of water or exces-
sive maintenance effort, increasing the blow-down fre-
quency may be meaningful. When conductivity is low,
however, a lower blow-down frequency may be ade-
quate. To cope with different water qualities, blow-down
rates may be adapted within a range of 10 stages (fac-
tory presetting is „0“).
Increase blow-down rate: settings up to +5.
Decrease blow-down rate: settungs up to - 5.
A blow-down rate too low will lead to significant wear and
tear and will also increase the maintenance effort
required.
Pls. note:
a „-5“ setting will shut off blow-down com-
pletely!
