Danfoss AK-CC55 Water Loop - Condenser Control

Function
Description
Values
Code
Short name
Speed Kp
Amplication factor Kp for PI control of speed
c82
c82 Speed Kp
Speed Tn
Integration factor Tn for PI control of speed
c83
c83 Speed Tn
Max. Kp factor
Max. Kp value at high deviation from the temperature
setpoint
c98
c98 Speed Kp Max
ON time emergency
Thermostat ON time at thermostat sensor error
c86
c86 Emergency ON
OFF time emergen-
cy
Thermostat OFF time at thermostat sensor error
c87
c87 EmergencyOFF
Speed emergency
The xed speed during emergency control due to an
error on the thermostat sensor
c93
c93 Emerg. Speed
Oil return speed
Set the speed at which the compressor will run during
an oil return cycle
P79
P79 OilRtrnSpeed
Oil return time peri-
od
Set the time period for which the compressor will run
at increased speed during an oil return cycle
P80
P80 OilRtPeriod
Oil return speed lim-
it
If the compressor is running below the set speed lim-
it, an oil return counter is increased. When the coun-
ter reaches the dened "Oil return cycle time", an oil
return cycle will be initiated
P77
P77 OilRtSpdLim
Oil return interval
When the counter for low speed operation reaches
this value, an oil return cycle is initiated
P78
P78 OilRtIntrval
Resonance band
start
Variable speed level at which the resonance band
starts
P39
P39 Reson. start
Resonance band
Width of the resonance band
P40
P40 Reson. band
Condenser control
Table 26: Condenser control
Function
Description
Values
Code
Short name
Control state A
Readout of the actual control state of the controller
0=Normal ctrl., 1=Hold after defrost, 2=Min ON timer,
3=Min OFF timer, 4=Drip o, 10=Main switch OFF,
11=Thermostat cut-out, 12=Frost protection S4,
14=Defrost, 15=Fan delay, 17=Door open, 18=Melt
period, 19=Modulating temp. control, 20=Emergency
control, 25=Manual control, 29=Case cleaning,
30=Forced cooling, 32=Power-up delay, 33=Air heat-
ing, 34=Comp. safety cut-out, 45=Shut down control-
ler, 50=High S7 Brine inlet
u00
u00 Ctrl. state
S7 Brine inlet temp.
Actual sensor value
u98
u98 S7 temp
S8 Brine outlet
temp.
Actual sensor value
u93
u93 S8 temp
Condenser fan
Actual status of output function
0=OFF, 1=ON
U16
U16 Cond. fan
Max. S7 Brine temp.
Max. temperature safety limit for the condenser en-
tering brine temperature. If the limit is violated, the
compressor capacity will be reduced and an alarm
will be activated. If the temperature decreases with
the set dierential, the alarm will be deactivated
again and the compressor capacity will no longer be
restricted.
A76
A76 MaxS7BrineT.
Max. S7 Brine temp.
di.
Temperature dierential for the safety limit "Max. S7
Brine temp.". If the max. temperature safety limit for
the condenser entering brine temperature is violated,
the compressor capacity will be reduced and an alarm
will be activated. If the temperature decreases with
the set dierential, the alarm will be deactivated
again and the compressor capacity will no longer be
restricted.
A77
A77 S7Brine Di
Cond. fan cut-in
Temperature setting at which the condenser fan is
started
F24
F24 Cond. Cutin
Cond. fan di.
Temperature dierential for stopping condenser fan
F25
F25 Cond. di.
© Danfoss | Climate Solutions | 2022.04 BC378540472015en-000101 | 55
AK-CC55 Water Loop