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 42
4.5
Parameter description
A--
Alarms
A0
Assignment of alarm sensor
This parameter is used to set which sensor input is to be the alarm sensor.
A1
Upper limit value
A2
Lower limit value
The limit values are used to monitor the temperature of the cooling space. They are relative, i.e. run along with setpoint S1
of the cooling space. If the upper limit value is exceeded or if the the lower limit value is undercut, an alarm message is sent
to
A15
. If [
A1
= 0] and/or [
A2
= 0] is/are set, the respective limit value alarm is inactive.
A3
Switching direction of the alarm relay
This parameter is used to specify whether the relay is to be closed or opened in the event of an alarm.
A4
Switching hysteresis for alarm
The hysteresis of the alarm contact is asymmetrical, i.e. set downwards at the upper alarm value and upwards at the lower
alarm point.
A10
Alarm suppression time after temperature alarm
If the temperature of the cooling space rises and exceeds the limits set in
A1
and
A2
, a temperature alarm should normally
be triggered. The suppression time set in
A6
can be used to delay the alarm.
A11
Alarm suppression time after defrosting
After defrosting, a temperature alarm is prevented for the set time in order to allow the system to return to normal operating
conditions.
A12
Alarm suppression time after cooling on
An alarm message is suppressed for the set time after switching on the cooling system. This gives the refrigeration system
the opportunity of approaching the working temperature range without triggering an alarm.
A13
Alarm suppression time for door open
This parameter defines if an alarm is to be triggered when the door is opened. If the door is closed again within the time
specified here, no alarm is triggered.
A14
Behaviour after automatic clearing of the temperature alarm
This setting determines if a temperature alarm may clear itself automatically when the temperature is within the warning
limits again or if it must be confirmed. This means, for example, that a temperature alarm which occurred during the night
remains until the error is confirmed the next day. If the temperature alarm still present at the time of acknowledgement, the
buzzer is switched off according to the setting in
A15
, but the warning message remains on the display until the temperature
is within the warning limits. Once an alarm has been confirmed, it is automatically deleted.
A15
Buzzer and/or indication function if there is an alarm
This specifies whether a temperature alarm is displayed or not, and if the buzzer may sound. Furthermore, the user can
specify here if the buzzer should recur after acknowledgement. The time is given in
A16
. The error message flashes on the
display alternately with the temperature as long as the alarm persists. Several alarm messages are displayed in turn one
after the other. Regardless of this, the alarm relay always signals the alarm.
A16
Buzzer recurring after acknowledgement
An alarm that has not been cleared is switched on again by the buzzer after the time set here. This only applies when the
setting is [
A15
=6].
A17
Reset MIN/MAX memory
This parameter can be used to clear the MIN and/or MAX memory.
A18
Display of current MAX memory
A19
Display of current MIN memory
The current MAX/MIN memory can be called up here.
A20
High-pressure function:
Triggering until alarm
In the event of a high pressure signal, the compressor is switched off immediately and a message displayed via a
parametrised switching input. If the high pressure signal disappears within 15 minutes, the error message is cleared and the
compressor restarted. However, an alarm is only triggered via the alarm relay if the number of registered triggers specified
here is exceeded within 15 minutes or if the signal lasts longer than 15 minutes. The system can only clear this error by
disconnecting the mains (and after repair!).