Fan Control; Railheat Control - Danfoss AK-CC55 Compact User Manual

AK-CC55 Compact
Function Description
Min OFF time Minimum time the compressor has to be stopped
Delay between Time delay for couplings of two compressors. The
comp. step delay is the time that has to elapse from the first
compressor cuts in and until the next compressor can
cut in.
Step control mode Selection of step control mode for compressors. At se-
quential mode compressor 1 will always be the first to
start and the last to stop. In cyclic mode the run time
between the compressor will be equalized.
Comp. 2 ctrl. Th. Select whether compressor 2 is to be in operation in
band 2 thermostat band 2

Fan control

Table 31: Fan control
Function Description
Control state A Readout of the actual control state of the controller
Fan Actual status of output function
Fan ECO Actual status of output function
Fan pulsing mode Pulse operation of fan 0: No pulse operation 1: Pulse
operation when the thermostat is cut out2: Pulse op-
eration when the thermostat is cut out, but only dur-
ing night operation
Fan period time Periodtime for pulsing of fan
Fan ON cycle ON time for fan. The ON period is set as a percentage
of the period time
Fan stop high S5 Fan stop temperature The function stops the fans in
temp. an error situation, so that they will not provide power
to the appliance. If the defrost sensor registers a high-
er temperature than the one set here, the fans will be
stopped. There will be re-start at 2 K below the set-
ting. The function is not active during a defrost or
start-up after a defrost.
Fan at forced closing You can set whether fans should be operational or
stopped if the function "Forced closing" is activated
here. 0: Fans are OFF1: Fans are ON2: Fans are OFF and
defrost is not permitted3: Fans are ON and defrost is
not permitted
Fan stop at blinds When blinds are closing the fans are stopped in the
closing defined time delay in order to ensure that the blinds
are closed correctly

Railheat control

Table 32: Railheat control
Function Description
Control state A Readout of the actual control state of the controller
Dewpoint Actual dewpoint received from system manager via
network
Rail heat Actual status of output function
Railheat power Readout of the actual rail power in %
Rail heat PWM Actual status of output function
© Danfoss | Climate Solutions | 2022.08
Values
1=Sequential, 2=Cyclic
0=OFF, 1=ON
Values
0=Normal ctrl., 1=Hold after defrost, 2=Min ON timer,
3=Min OFF timer, 4=Drip off, 10=Main switch OFF,
11=Thermostat cut-out, 12=Frost protection S4,
14=Defrost, 15=Fan delay, 16=Forced closing,
17=Door open, 18=Melt period, 19=Modulating
temp. control, 20=Emergency control, 23=Adaptive
superheat control, 24=Start injection, 25=Manual
control, 26=No refrigerant selected, 29=Case clean-
ing, 30=Forced cooling, 31=Door open, 32=Power-up
delay, 33=Air heating, 45=Shut down controller,
48=Adaptive liquid control
0=OFF, 1=ON
0=OFF, 1=ON
0=No pulsing, 1=Pulsing cutout, 2=Pulsing cutout
night
0=OFF, 1=ON, 2=OFF and suppress defrost, 3=ON and
suppress defrost
Values
0=Normal ctrl., 1=Hold after defrost, 2=Min ON timer,
3=Min OFF timer, 4=Drip off, 10=Main switch OFF,
11=Thermostat cut-out, 12=Frost protection S4,
14=Defrost, 15=Fan delay, 16=Forced closing,
17=Door open, 18=Melt period, 19=Modulating
temp. control, 20=Emergency control, 23=Adaptive
superheat control, 24=Start injection, 25=Manual
control, 26=No refrigerant selected, 29=Case clean-
ing, 30=Forced cooling, 31=Door open, 32=Power-up
delay, 33=Air heating, 45=Shut down controller,
48=Adaptive liquid control
0=OFF, 1=ON
Code Short name
c02 c02 Min.Off time
c05 c05 Step delay
c08 c08 Step mode
c85 c85 Cmp2 In Th2
Code Short name
u00 u00 Ctrl. state
u59 u59 Fan relay
U37 U37 Fan Eco
F05 F05 FanPulseMode
F06 F06 Fan cycle
F07 F07 Fan ON %
F04 F04 FanStop temp
o90 o90 Fan ForcedCl
P65 P65 BlindFanStop
Code Short name
u00 u00 Ctrl. state
x18 --- Dew point
u61 u61 Railh. relay
u85 u85 Rail DutyC %
U59 U59 Railheat PWM
BC365212986197en-000201 | 52