Order number: 900323.001 V1.74 Page 21
© Störk-Tronic 2021 • www.stoerk-tronic.com • Subject to modifications.
Parameter description
F21 Hysteresis (if F15=4 or 5)
The control hysteresis is always set above
the theoretical switching point.
F22 Fan speed in control mode, Set1,
NIGHT
Fan speed at night in normal control mode
and active Set1
F23 Fan speed in control mode, Set2,
NIGHT
Fan speed at night in normal control mode
and active Set1
F50 Assignment of evaporator sensor
With this parameter, you can set which sen-
sor input is to be used as the evaporator
sensor. The selected sensor must be set up
accordingly in the H parameters.
F51 Condenser fan: setpoint
Only effective if F65=3 or 4 and F70=0. If
the value defined here is exceeded, the con-
denser fan will be switched on.
F54 Condenser fan: switching hyste-
resis
Only effective if F65=3. The hysteresis is set
on one side above the setpoint of parameter
F51.
F58 Condenser fan: Delay after com-
pressor start
On-delay of condenser fan after activation of
the compressor.
F59 Condenser fan: Delay after com-
pressor stop
Off-delay of condenser fan after shut-down
of the compressor. This delay is not active if
F65 = 3 or .4
F65 Function of condenser fan
0: no function, i.e. condenser fan is off
1: condenser fan on at all times
2: condenser fan on if compressor is on
3: condenser fan controlled via setpoint in
parameter F51. In the case of a sensor fault,
the fan behaves like F65=2.
4: like 3., but the fan is controlled continu-
ously via a voltage output
The proportional range is defined in param-
eter F66.
F66 Condenser fan: Proportional range
P-controller
For setting of proportional range required if
F65=4 in which the fan is to be controlled.
F67 Condenser fan: Minimum speed
Here, you can set the lowest voltage value at
which a connected fan will still be running.
F68 Condenser fan: Start-up time
Here, you can define the time for which a fan
is switched on from standstill at max. voltage
to enable stable operation.
F99 Password for parameter level F--
With this parameter, you can set the pass-
word for parameter level F--.
H-- Temperature sensors
H1 Mains frequency
In this parameter, you must define the mains
frequency.
H11, H21, H31, H41 Actual value sensor
F1 .. F4
The temperature value shown here is used
for control. It is calculated as follows:
Actual control value =
(actual measured value * weighting factor )
+ actual value correction
Actual value correction and weighting factor
must be defined in the following parame-
ters. This corrects actual value deviations in
special applications (refrigerated shelves or
similar) due to unfavourable sensor location.
H51 Weighted mean value sensors F1
and F2
This theoretical mean value from sensors F1
and F2 may be useful for the control circuit
or display. It is calculated as follows:
H51=(H53 x H11 + (100 - H53) x H21)/100
H12, H22, H32, H42 Calibration of sen-
sor F1…F4 actual value correction
With this parameter it is possible to correct
actual value deviations caused by sensor
tolerances, very long sensor cables or struc-
tural protections (e.g. ex-barriers), for exam-
ple. The value defined here is added to the
measured value.
H13, H23, H33, H43 Weighting factor
F1…F4
With this parameter, it is possible to correct
actual value deviations due to unfavourable
sensor location. The value measured by the
controller is multiplied by the value set here.
H14, H24, H34, H44 Sensor selection
F1…F4
With this parameter, you can define the sen-
sor type. Depending on the hardware, not
all sensor types may be supported. For the
NTC sensor, a parallel resistor will have to
be connected.
H15, H25, H35, H45 Software filter F1…
F4
In this parameter, you can define how many
measured values are to be used for calcu-
lating a mean value. A mean value is cal-
culated from the last measured values, with
the oldest measured value being deleted (so
called "Moving Average Filter").
H16, H26, H36, H46 F1…F4: Display at
0 / 4mA
If, when choosing the sensor, H14 / H24 /
H34 / H44 = 7 or 8 is selected (0…20mA
or 4..20mA linear sensor), you can define
via this parameter which value is to be dis-
played in the case of a current of 0 or 4mA.
The value to be displayed for 20mA can be
defined in the next parameter. The actual
measured value is calculated as linear inter-
polation between these two values.
H17, H27, H37, H47 F1…F4: Display at
20mA
If, when choosing the sensor, H14 / H24 /
H34 / H44 = 7 or 8 is selected (0…20mA
or 4..20mA linear sensor), you can define
via this parameter which value is to be dis-
played in the case of a current of 20mA.
The display value for 0 / 4mA is defined
in the previous parameter. The actual mea-
sured value is calculated as linear interpola-
tion between these two values.
H53 Weighting of sensor F1 for display
H51 (weighted mean value of sensor F1
and F2)
This theoretical mean value from sensors F1
and F2 may be useful for the control circuit
or display. It is calculated as follows:
H51=(H53 x H11 + (100 - H53) x H21)/100
H99 Password for parameter level H--
Password for level H--.
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