Injection Control; Defrost Control - Danfoss AK-CC55 Compact User Manual

AK-CC55 Compact

Injection control

Table 27: Injection control
Function Description
Control state A Readout of the actual control state of the controller
Thermostat air Thermostat temperature
temp. A
S3 Air ON evap. A Actual sensor value
S4 Air OFF evap. A Actual sensor value
EEV opening A Actual status of output function
Pe Evap. pressure Actual sensor signal
Te Evap. temp. Temperature converted from pressure
S2 Gas outlet A Actual sensor value
Superheat A Readout of actual superheat at the outlet of the evap-
orator
Superheat reference Read out of the actual superheat reference
A
Brine valve opening Actual status of output function
Min superheat limit Min. value for the superheat reference
Max superheat limit Max. value for the superheat reference
MOP temperature MOP temperature. The valve opening degree is re-
duced until the evaporating temperature reaches the
set MOP limit. If no MOP function is required, select
highest value, which corresponds to OFF
AKV Period time Period time for the pulse width modulation
Min superheat liq- Min. value for the superheat reference during adap-
uid ctrl tive liquid control
Max superheat liq- Max. value for the superheat reference during adap-
uid ctrl. tive liquid control
Brine valve - Period Period time for the pulse width modulation
time
Brine valve max OD Expert setting - please contact Danfoss for further in-
fo
Brine valve min OD Expert setting - please contact Danfoss for further in-
fo
Brine valve windup Expert setting - please contact Danfoss for further in-
fo
Brine valve Kp Expert setting - please contact Danfoss for further in-
fo
Brine valve Tn Expert setting - please contact Danfoss for further in-
fo

Defrost control

Table 28: Defrost control
Function Description
Control state A Readout of the actual control state of the controller
Defrost sensor tem- Actual temperature of selected defrost stop sensor
perature A
S5 Evaporator A Actual sensor value
© Danfoss | Climate Solutions | 2022.08
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
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
Code Short name
u00 u00 Ctrl. state
u17 u17 Ther. air
u12 u12 S3 air temp.
u16 u16 S4 air temp.
u23 u23 EEV OD %
u25 u25 EvapPress Pe
u26 u26 EvapTemp Te
u20 u20 S2 temp.
u21 u21 Superheat
u22 u22 SuperheatRef
U02 U02 PWM OD %
n10 n10 Min SH
n09 n09 Max SH
n11 n11 MOP temp.
n13 n13 AKV Period
P87 P87 SH Min Liq.
P86 P86 SH Max Liq.
n63 n63 Pwm Period
n64 n64 Pwm Max. OD
n65 n65 Pwm Min. OD
n66 n66 PwmWindUp-
Fac
n67 n67 Pwm Kp fact.
n68 n68 Pwm Tn sec
Code Short name
u00 u00 Ctrl. state
U73 U73 Def.StopTemp
u09 u09 S5 temp.
BC365212986197en-000201 | 49