Beer Grill AG
Beer Grill GmbH
Allmendstrasse 7
Tel. +41 56 618 7800
Körnerstrasse 14 a
Tel. +49 71 61 659 876
CH
– 5612 Villmergen,
Switzerland
Fax +41 56 618 7849
D
– 79539 Lörrach,
Germany
Fax +49 71 61 659 879
www.beergrill.com
Assembly-Programming-Instructions_Cold-Rack_e_05-10-2018
Page 47
Setpoint for fan as fixed value
If [F15 = 4], the evaporator fan reacts to fixed temperature setpoint
F20
(set as the difference to the cooling space setpoint
c1
). The temperature from the evaporator sensor serves as the measured value. Whenever the evaporator is colder than
setpoint
F20
, the fan runs at maximum speed as defined in parameter
F8
. If the evaporator is too warm (setpoint
F20
plus
hysteresis
F21
), the fan runs at the minimum speed defined in
F13
.
Setpoint for fan as differential temperature
If
[F15 = 5
], the evaporator fan does not react to a fixed setpoint, but to a temperature difference between the evaporator
and the cooling space. The temperature from the evaporator sensor serves as the measured value. The setpoint for the fan
is formed from the cooling space temperature plus the difference of
F20
and runs parallel to the cooling space temperature.
This results in demand-oriented behaviour where the fan can run at maximum speed (as defined in parameter F8), even at
higher temperatures. Only the evaporator must be correspondingly colder than the cooling space. If the evaporator is too
warm (differential setpoint plus hysteresis
F21
), the fan runs at the minimum speed defined in
F13
.
F16
Defrosting fan mode
This parameter is used to specify if the fan is to be switched on or off during defrosting. This parameter has no effect in
temperature-controlled fan mode [
F15
4 or 5].
F17
Delay after compressor on
To ensure that the compressor and fan do not unnecessarily load the power supply by switching on together, this parameter
can be used to set a switch-on delay for the fan. It has no effect in temperature-controlled fan mode.
F18
Delay after defrosting
After defrosting is complete, the switching on of the fan is delayed for the time period set here. This parameter is valid in all
set fan modes.
F19
Drip pause time (with
F15
= 2)
If the fan runs continuously, there is a small temperature fluctuation with high humidity. In the "With compressor on" mode,
however, the temperature fluctuation is greater and the humidity lower. This parameter is now used to combine the two
advantages. The fan operates continuously and is switched off for the time specified here when the compressor is switched
off. This allows the humidity that forms on the evaporator to drip off.
F20
Evaporator fan control offset (for
F15
= 4 or 5)
For [
F15
= 4], the following applies: The basis is the setpoint for control loop 1
(c1
or
c3
). If the evaporator temperature is
below the setpoint, the evaporator fan is switched on. This switch point can be shifted by the value set here. For [
F15
= 5],
the following applies: The temperature difference between the cooling space (sensor from c0) and evaporator temperature
(sensor from d0) determines the switching point for the evaporator fan. If the evaporator temperature is below the cooling
space temperature, the evaporator fan is switched on. This switch point can be shifted by the value set here.
F21
Hysteresis (with
F15
= 4 or 5)
The control hysteresis is always set above the calculated switching point.
F50
Condenser sensor assignment
This parameter is used to set which sensor input is to be the sensor input of the condenser sensor. The selected sensor
must be set accordingly in the
H
parameters.
F51
Condenser fan: Setpoint
Only with [
F65
= 3]. If the value set here is exceeded, the condenser fan is switched on.
F54
Condenser fan: Switching hysteresis
Only has an effect in the setting [
F65
= 3]. The hysteresis is set on one side above the setpoint of parameter
F51
.
F58
Condenser fan: Delay after compressor start
Switch-on delay of the condenser fan after the compressor has been switched on.
F59
Condenser fan: Delay after compressor stop
Running-on of the condenser fan after the compressor has been switched off.
F65
Condenser fan function
0: No function, i.e. the condenser fan is off
1: Condenser fan always on
2: On when the compressor is on
3: Condenser fan is controlled by the setpoint in parameter F51. In the case of a sensor fault, the fan behaves as in setting
[
F65
= 2].
4: As 3, but the fan is set continuously via a voltage output. The proportional range is specified in parameter
F66
.
