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 44
c12
Compressor start protection after mains on
This prevents the control output from being switched on after "Mains On" until this protection time has elapsed. This can, for
example, prevent several controllers from switching on and loading the power supply at the same time.
c15
Duty cycle in emergency operation
c16
Cycle time in emergency operation
These parameters can be used to select how the compressor should continue to run in the event of a sensor fault. In
emergency operation, the compressor is operated in the cycle of
c16
. The duty cycle in
c15
is expressed as a percentage
of the cycle time, where 100 % corresponds to continuous operation of the compressor and 0 % corresponds to the
compressor being permanently switched off. In the deep-freeze area, the compressor should continue to run to prevent the
goods from thawing. However, in the normal cooling range above 0 °C, continued operation could lead to frost damage. No
defrosting takes place during emergency operation.
c20
Assignment of sensors for the "Superfrost" function
This parameter is used to set which sensor input is to be assigned to the "Superfrost" function. Depending on the sensor
version, it can also serve as a core or product temperature sensor. The selected sensor must be set accordingly in the
H
parameters.
c21
"Superfrost": Time limit, "Shock freezing", "Max. cooling capacity"
c22
"Superfrost.": Temperature limit, "Shock freezing", "Max. cooling capacity"
c23
"Superfrost": Switch-off, "Shock freezing", "Max. cooling capacity"
If this function is switched on, the lower warning limit is deactivated and the compressor is switched on permanently.
c23
specifies if an automatic shutdown is to take place and if it is to be limited only in time or also by the temperature. The time
limit is defined by
c21
and the temperature condition by
c22
.
c30
Assignment of the sensor for humidity control
This parameter is used to set which sensor input is to be assigned for the humidity. If no sensor is assigned, humidity control
is deactivated. However, in function
c39
= 2, a relay can be switched via the humidity key function. The selected sensor
must be set accordingly in the
H
parameters.
c31
Humidity setpoint
c32
Humidity at night setpoint offset
For [
c39
> = 2] and assigned sensor, the control is set to the value set here. The value in the
c32
parameter is added to
c31
if night switching is active.
c34
Humidity control mode
In the [
c39 = 1
] setting, only the evaporator fan is set to continuous operation for humidification. This transports the humidity
that forms on the evaporator back into the cooling space. The function is switched manually via the humidity function (see
b parameter). In the [
c39 = 2
] setting a relay is switched for humidification, which distributes humidity in the form of mist, for
example, in the cooling space. If no sensor is specified, this relay can be switched manually via the humidity function (see
b parameter). In the [
c39 = 3
] setting, the compressor is switched on for dehumidification. To prevent the cooling space from
becoming too cold, reheating is switched in accordance with parameters
c37
and
c38
. If no sensor is specified, this function
is deactivated.
c35
Hysteresis
This parameter specifies the control hysteresis. A small hysteresis allows more precise control, but also leads to more
frequent switching of the relay.
c36
Humidity hysteresis mode
This parameter can be used to select if the hysteresis at the respective switching point is symmetrical or takes effect on one
side. A hysteresis programmed on one side is applied below the setpoint for humidification
[c39 = 2
] and above it for
dehumidification [
c39 = 3
]. If the hysteresis is symmetrical, there is no difference.
c37
Setpoint offset for reheating
c38
Hysteresis for
c37
In the dehumidify function [
c39 = 3
], the compressor is switched on to reduce the humidity from the cooling space. Reheating
can be switched on to prevent the chilled goods from becoming too cold. For this purpose, the value in
c37
is added to the
current cooling space setpoint and the reheating is switched on if the value falls below the calculated value (see
U
parameter). The hysteresis specified in
c38
is always set above the setpoint.
c39
Humidity setpoint limit, top
c40
Humidity setpoint limit, bottom
The setpoints
c31
and
c33
can only be set within the limits specified here.
c99
Password for parameter level
c--
This parameter is used to set the password for parameter level
c--
.
