Danfoss ERC 112D VSC User Manual page 18

User Guide | ERC 112D VSC Refrigeration Controller
"Ltd" Alarm delay on low temperature alarm
The number of minutes to wait before sounding an alarm once the
Min. 0 min
low temperature alarm temperature is reached.
Max. 240 min
Default 0 min
"Pdd" Pull down delay
Normally, it is not necessary or desirable to sound an alarm during a pull
Min. 0 min
down (the initial phase of reaching the desired temperature). This
Max. 960 min
Default 240 min
parameter prevents the high temperature alarm "HAt" sounding during pull down
and after a defrost for the number of minutes set for the parameter.
NOTE: it does not apply to the low temperature alarm "LAt".
"dod" Door Open delay
It is possible to indicate to customers that a door has accidentally been
Min. 0 min
left open. This parameter sets the delay in minutes before the alarm sounds.
Max. 60 min
Default 2 min
This is useful in environments where customers/users may hold the door
open while making their selection. If the door is closed again before
the set number of minutes is reached, the alarm does not sound.
NOTE: a door sensor is required if this parameter is to be activated.
"LEA" Leakage alarm
Min. 0 hour
Leakage detection for compressor protection. If compressor operates for more than the set time, an alarm will be triggered.
Max. 96 hour
"0": disable
Default 0 hour
"Abd" Alarm Buzzer Duration
The alarm sounds for 10 seconds, followed by silence for 50 seconds.
Min. 0 min
One alarm sequence therefore lasts 60 seconds. These values cannot be
Max. 999 min
Default 0 min
changed. This parameter determines how long in minutes an audible
alarm will continue while there is still a reason to have an alarm.
If set to 999, the alarm will continue to sound until the reason for the
alarm is cleared – for example the temperature has dropped enough or
the door closed. In some cases, it may be necessary for a user or technician
to take action in order to clear the alarm. If set to 0, the alarm will never
sound.
"ACA" Auto Clear of Alarm/Error/ACA
If this parameter is set to "no":
Min. no
The alarm status will not disappear automatically even if the condition
Max. yes
which caused the alarm is no longer valid or present.
Default yes
If set to "yES":
As soon as the condition which caused the alarm is no longer valid or
present, the alarm status will automatically change back to inactive.
There will be no trace of the alarm having occurred.
In general, glass door merchandise applications will be set to "yES" and
commercial fridges and freezers set to "nO".
For example, if the temperature goes too high for a period there may
be food safety considerations in a freezer containing food but not in a
fridge with cold drinks.
AHC Automatic Heater settings
Automatic Heater Control applies reverse cooling mode
(heating) to your refrigeration appliance.
This feature requires:
A) that your appliance is exposed to ambient temperatures
below the desired temperature in your cabinet
(e.g. very cold climates and outdoor use).
B) a special heater (for example a large defrost heater) built in
to your appliance.
"AuH" Automatic Heater Mode Enable
This setting is normally set to "no".
Min. no
When set to "yES", parameters "End" and "Hdi" apply.
Max. yes
Default no
18 | BC286552322855en-000201 © Danfoss | DCS (vt) | 2019.07