Injection Function; Fan Function - Danfoss AK-CC55 User Manual

User Guide | Controller for appliance control, AK-CC55

Injection function

Max. value for the superheat reference
Min. value for the superheat reference
MOP temperature
If the MOP function is not desired, the setting must be set to OFF. The MOP feature
can also be used to close AKV valve, if centralized compressor pack has stopped
running.
AKV valve cycle time in seconds
(Should only be configured to a lower value if the system is decentralised and the
suction pressure varies significantly and in line with the opening of the AKV valve.
Period for pulse width modulation (PWM). Brine management
Expert setting - The value should be changed only by specially trained personnel.
Max. opening degree for PWM
Min. opening degree for PWM
Wind up factor for PWM
Expert setting - The value should be changed only by specially trained personnel.
Ampflication factor for PWM
Expert setting - The value should be changed only by specially trained personnel.
Integration time for PWM
Expert setting - The value should be changed only by specially trained personnel.
Info
1. Superheat regulation can be changed from adaptive regulation to load-defined
superheating. Changes are to be made in menu n21 "For Danfoss only".
2. For regulation with "zero degree superheat" (adaptive liquid regulation), the set-
ting values for superheating can be seen in P86 and P87.
Fan
Fan stop temperature
The function stops the fans in an error situation, so that they will not provide power
to the appliance. If the defrost sensor registers a higher temperature than the one set
here, the fans will be stopped. There will be re-start at 2 K below the setting.
The function is not active during a defrost or start-up after a defrost.
With setting +50°C the function is interrupted.
Pulse operation of fan
0: No pulse operation
1: Pulse operation when the thermostat does not call for refrigeration
2: Pulse operation when the thermostat does not call for refrigeration, but only
during night operation
Pulse operation period for fan
Here the overall pulse time is set. The sum of ON-to and OFF time.
ON time for fan
Here the % part of the period the fans are to be in operation is set.
The LED on the display front will indicate whether a defrost is going on.
*Settings n63 - n68 are only used in compact version when a brine valve is used for modulating temperature control.
52 | BC308437742037en-000101
Disable def.
All defrost starters will be blocked if
ON is selected.
MC def. start
Use of external diagram. Adaptive
start and cancellation of defrost is
permitted.
Defrost State
Status on defrost
On= pump down / defrost
Tc temp. Air
Median Tc temperature from system
unit
n09 Max SH
n10 Min SH
n11 MOP temp
A value of 15 will equal OFF
n13 AKV Period
n63* Pwm Period
n64* Pwm Max. OD
n65* Pwm Min. OD
n66* PwmWindUpFac
n67* Pwm Kp fact.
n68* Pwm Tn sec
Forced cool.
(start of forced cooling)
Forced close
(forced stop of cooling)
Fan control
F04 FanStopTemp.
F05 FanPulseMode
F06 Fan cycle
F07 Fan ON %
u59 Fan Relay
© Danfoss | DCS (vt) | 2019.09