Compressor Function - Danfoss AK-CC55 User Manual

User Guide | Controller for appliance control, AK-CC55
Lower alarm limit
Here you set when the alarm for low temperature is to start. The limit value is set in °C
(absolute value).
Upper alarm limit for thermostat 2 (Thermostat band 2)
(Same function as for thermostat 1)
Lower alarm limit for thermostat 2 (Thermostat band 2)
(Same function as for thermostat 1)
Upper alarm limit for S6 temperature at thermostat 1
Lower alarm limit for S6 temperature at thermostat 1
Upper alarm limit for S6 temperature at thermostat 2 (Thermostat band 2)
Lower alarm limit for S6 temperature at thermostat 2 (Thermostat band 2)
S6 temperature alarm delay
The alarm is activated if one of the relevant alarm limits A22, A23, A24 or A25 is
exceeded. The time delay is set in minutes.
(Alarms will not activate when the setting is set to the maximum value.)
Delay of a DI1 alarm
A cut-out/cut-in input will result in alarm when the time delay has been passed. The
function is defined in o02.
Delay of a DI2 alarm
A cut-out/cut-in input will result in alarm when the time delay has been passed. The
function is defined in o37
Signal to the alarm thermostat
Here you have to define the ratio between the sensors which the alarm thermostat
has to use. S3, S4 or a combination of the two.
With setting 0% only S3 is used. With 100% only S4 is used.
Time delay on S6 (product sensor) for pull-down (long alarm delay)
This time delay is used for start-up, during defrost, immediately after a defrost and
after an appliance cleaning.
A change is carried out to standard time delay (A26) when the temperature has
reached below the set upper alarm limit.
The time delay is set in minutes.
Alarm delay
Short alarm delay on S3B air temperature.
(The setting in A12 is used as long delay time)
Product sensor S6 function
S6 measurement, temperature display and alarm function is to be used/is not to be
used.
Compressor
The compressor relay works in conjunction with the thermostat. When the thermo-
stat calls for refrigeration, the compressor relay is activated.
Running times
To prevent irregular operation, values can be set for the time the compressor is to run
once it has been started. And for how long it at least has to be stopped.
The running times are not observed when defrosts start.
Min. ON-time (in minutes)
Min. OFF-time (in minutes)
Time delay for couplings of two compressors
Settings indicate the time that has to elapse from the first relay cuts in and until the
next relay has to cut in.
Choice of connection method for dual compressor operation:
1: Sequential (first in, last out)
2. Cyclical (equalisation of on-time)
The LED on the display front will show whether refrigeration is in progress.
© Danfoss | DCS (vt) | 2019.09
A14 LowLim Air
A20 HighLim2 Air
A21 LowLim2 Air
A22 HighLim1 S6
A23 LowLim1 S6
A24 HighLim2 S6
A25 LowLim2 S6
A26 Al. Delay S6
A27 AI.Delay DI1
A28 AI.Delay DI2
A36 Alarm S4%
A52 PullD del.S6
A53 Al.Del.S3B
a01 S6 function
Compressor control
c01 Min. On time
c02 Min. Off time
c05 Step delay
c08 Step mode
u58 comp1/LLSV
Here you can read the status of the
compressor relay.
BC308437742037en-000101 | 49