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Technical Information
18
“Low temperature”
alarm delay (control temperature)
If the control temperature stays below the defined alarm value (
19
) for longer than the period defined by this
parameter, the alarm will be triggered.
19
“Low temperature” alarm threshold (control temperature)
Relative alarm threshold to control temperature setpoint
1
or
3
. If the control temperature falls below setpoint
- this value an alarm is triggered and cooling is stopped.
T
threshold
= t
set-point
- Parameter(19)
20
“High condensing pressure” alarm threshold
The condensing pressure can optional be measured by the discharge pressure sensor. An electronic high
pressure fault can be detected in addition of using a mechanical pressure switch by using this setpoint entry.
Only active when a discharge pressure sensor is in use.
21
“High condensing pressure” alarm delay
If the condensing pressure stays above the defined alarm value (
20
) for longer than the period defined by this
parameter, the alarm will be triggered.
22
“Cabinet temperature” alarm enabled
If a cabinet temperature sensor is used, high temperature and low temperature alarms for the cabinet can be
activated.
23
“Low cabinet temperature” alarm threshold
Minimum permissible cabinet temperature. When this value is reached, refrigeration is stopped and will only
be start again after the temperature has risen above the threshold.
24
“High cabinet temperature” alarm threshold
Maximum permissible cabinet temperature. If the temperature rises above the value configured in this
parameter an alarm is triggered.
25
“Cabinet temperature”
alarm delay
If the cabinet temperature stays below the defined lower alarm value (
23
) or above the defined upper alarm
value (
24
) for longer than the period defined by this parameter, the alarm will be triggered.
26
Defrost interval time
Interval between defrost cycles. After activation, the first defrost interval is changed by the configured Modbus
address, see Figure. This is done to avoid peaks in power consumption caused by a synchronous start of
cooling of all cabinets. After starting a defrost cycle (either by a timer or via communication), the interval is re-
set.
Figure 17: Shift of Defrost Interval
’s by ModBus Address
