Alarm - Danfoss AK-CC55 User Manual

User Guide | Controller for appliance control, AK-CC55
Melt function
Only for control of refrigeration (-5 to +10°C). The function ensures that the
evaporator will not be blocked by frost. Here you set how often the function is to stop
the refrigeration and hence transform the frost to water (or ice if there is too much
frost).
Melt period
Here you set how long an on-going melt function is to last.
Setpoint 2
The thermostat's cut-out value when the thermostat band 2 is activated via a digital
input.
Correction of signal from S3B
Compensation possibility due to long sensor cable
Correction of signal from S6
Compensation possibility due to long sensor cable
Selection of thermostat sensor S4% during night operation
Here you define the thermostat sensor for night operation - S3, S4, or a combination
of them. With the setting 0%, only S3 is used (Sin). With 100%, only S4.
Heat function
Set the size of the Neutral Zone for changeover from cooling to heating
Time delay on transition from refrigeration phase to heating phase.
(there is no time delay on transition from heating phase to refrigeration phase).
Food type
This function configures the temperature reference and associated alarm limits:
1=Vegetables, 8 °C. 2=Milk, 0 °C. 3=Meat/fish, -2 °C. 4=Frost, -20 °C. 5=Ice, -24 °C.
See overview on page 19. (After configuration the value will change back to 0).
S4 Frost protection
Refrigeration will stop if a lower temperature is recorded. Refrigeration will resume,
when the S4 temperature has increased 2 K. Refrigeration will not stop if the
threshold limit is configured to the thermostat cut-out value or higher.
Select temperature signal for joint thermostat (Multi Coil and r14=3 only)
1=air temperature S4 in section A
2=average value of S4 sensors in all sections
3=highest S4 temperature of any section

Alarm

The controller can give alarm in different situations. When there is an alarm, the red
diode in the display is activated and the alarm relay is de-energized.
Alarm delay (short alarm delay on air temperature)
If the upper or the lower alarm limit values are exceeded, a timer function will
commence. The alarm will not become active until the set time has been elapsed.
The time delay is set in minutes.
Time delay for door alarm
The time delay is set in minutes.
The function is defined in o02 , o37 or in o84.
Alarm delay during pulldown (long alarm delay)
This time delay is used during start-up, during defrost, and after an appliance
cleaning.
There will be change-over to the normal time delay (A03) when the temperature has
dropped below the set upper alarm limit.
The time delay is set in minutes.
Upper alarm limit
Here you set when the alarm for high temperature is to start. The limit value is set in
°C (absolute value).
The limit value will be raised during night operation. The value is the same as the one
set for night setback, but will only be raised if the value is positive.
48 | BC308437742037en-000101
r16 MeltInterval
r17 Melt period
r21 Cutout2 temp
r53 Adjust S3B
r59 Adjust S6
r61 Ther.S4% Ngt
r62 Heat NZ
r63 HeatStartDel
r89 Food type
r98 S4MinLimit
r99 Ther. Sensor
Night setbck
(start of night signal. 0=Day, 1=Night)
Alarm settings
With data communication the
importance of the individual alarms
can be defined. Setting is carried out
in the "Alarm destinations" menu via
AKM.
A03 Alarm delay
A04 DoorOpen del
A12 Pulldown del
A13 HighLim Air
© Danfoss | DCS (vt) | 2019.09