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 43
A25
Low-pressure function:
Delay until alarm
If a low pressure signal is applied via a parametrised switching input and does not return within the time specified here, the
compressor is switched off and an error message is displayed. The system can only clear this error by disconnecting the
mains (and after repair!).
A99
Password for level
A--
This parameter can be used to set the password for parameter level
.
b--
Keys and switch inputs
(password-protected)
b11
,
b13
,
b15
,
b17
Function E1…E4
Certain functions can be assigned to the switching inputs.
B12,
b14
,
b16
,
b18
Switching direction
E1…E4
Determines if the switch input is operated as a normally open (normal) or normally closed contact (inverse).
B99
Password for parameter level
b--
This parameter can be used to set the password for parameter level
.
c--
Control loop 1
c0
Cooling space sensor
assignment
This parameter is used to set which sensor input is to be the sensor input of the cooling space sensor. The selected sensor
must be set accordingly in the
H
parameters.
c1
Setpoint control loop 1 (Set1)
c2
Night boost/reduction circuit 1
c3
Setpoint control loop 1 (Set2)
This parameter can be used to set the setpoint. It is displayed directly by pressing the SET key and can also be adjusted.
The setting range is determined by the setting in parameters
c7
and
c8
. The setpoint
c3
becomes active when the Set2
function is switched on via a key, a digital switching input, the internal clock or via the ST bus. The setpoint
c2
becomes
active when the night boost or reduction function has been activated via a key, a digital switching input, the internal clock or
via the ST bus. The value of
c2
is added to the currently active setpoint
c1
or
C3
.
c4
Switching direction of control loop 1
The switching direction for the control output can be set for the heating or cooling function. In the heating function, the control
output is switched on if the actual temperature is lower than the set temperature. In the cooling function, it is the other way
round.
c5
Hysteresis of control loop 1
This parameter specifies the control hysteresis. A small hysteresis allows more precise control, but also leads to more
frequent switching of the relay.
c6
Control loop 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 the heating function [
c4 = 0
] and above it for
the cooling function [
c4 = 1
]. If the hysteresis is symmetrical, there is no difference.
c7
Upper setpoint limit
c8
Lower setpoint limit
The setpoints
c1
and
c3
can only be set within the limits specified here.
c10
Start protection after compressor start
This protection time is started at the same time as the compressor is switched on. After the compressor is switched off, it is
prevented from being switched on again until this protection time has elapsed. This is to avoid switching on too often in order
to increase the service life.
c11
Compressor start protection after compressor stop
This protection period is started at the same time as the compressor is switched off. This prevents the compressor from
being switched on again until this protection period has elapsed. This is to avoid switching on too often in order to increase
the service life.
