Danfoss AK-CC55 Compact User Manual page 56

AK-CC55 Compact
Function Description
Superheat Tn A Integration time of PI controller adjusting the valve
opening degree (expert setting)
S2 stabillity A Setting of required stability of S2 gas outlet tempera-
ture before the superheat reference is reduced (Ex-
pert setting)A higher value will allow more instabillity
in S2 signalA lower value will allow less instabillity in
S2 signal
S2 Std deviation Expert injection setting - contact Danfoss for further
information
Te feedback gain A Gain factor for feedback of evaporating temperature
signal Te to PI controller controlling the superheat
(expert setting)
Kp MTR control A Amplification factor for modulating temperature con-
trol (Expert setting)
Tn MTR control A Integration time for modulating temperature control
(Expert setting)
AFident A Expert readout - contact Danfoss for further informa-
tion
Calculated Max OD Calculated maximum opening degree of injection
A valve (expert readout)
Superheat close liq- Minimum limit of superheat where the valve is clos-
uid ctrl. A ing duting adaptive liquid control
Emergency OD day Average opening degree of liquid line solenoid valve
during day operation
Emergency OD Average opening degree of liquid line solenoid valve
night during night operation
SH Band Expert injection setting - contact Danfoss for further
information
Injection duty cycle Expert setting - contact Danfoss for further informa-
SP tion
Injection duty cycle Expert injection setting - contact Danfoss for further
information
P-gain Expert injection setting - contact Danfoss for further
information
OD Ctrl. status Readout showing which part of the injection function
that is in control of the valve opening degree
Table 41: Advanced → Master control
Function Description
Regulation condi- Readout of the actual control state of the controller
tion A
MC Actual cutin
temp.
MC Actual cutout
temp.
MC Ther. toggle Master control signal used for switching case load
ON/OFF depending on load condition
MC Load request Master control signal used to control load balance be-
tween multiple case controllers on the same suction
line
MC Max Te offset Requested offset to actual evporating temperature in
order to keep the air temperature at the actual set
point
MC Liquid control Master control signal allowing switch to adaptive liq-
uid control
MC Night setback Master control signal for changing between day and
night time operation
MC Case shutdown Master control signal used to shut down a case for a
time period. During shut down there will be no alarm
monitoring
MC Forced closing Master control signal that will close the injection
valve
MC Forced cooling Master control signal that will provide forced cooling
© Danfoss | Climate Solutions | 2022.08
Values
Values must be changed as per below:
0=Adaptive SH control
1=MOP
2=Superheat close
3=MTR
Values
0=Main switch OFF, 1=Injection start, 2=Superheat
ctrl., 3=Fill evap., 4=Defrost, 5=Post defrost, 6=Forced
closing, 7=Injection fault, 8=Emergency control,
9=Modulating ctrl., 10=Melt period, 11=Door open,
12=Case cleaning, 13=Cutout, 14=Forced cooling,
15=Shut down
0=No action, 1=Toggle ON, 2=Toggle OFF
0=OFF, 1=ON
0=OFF, 1=ON
0=OFF, 1=ON
0=OFF, 1=ON
0=OFF, 1=ON
Code Short name
x72 --- SH Tn
Y33 --- S2 Stability
Y34 --- S2 Std Dev
x73 --- Te-gain
x77 --- MTR Kpfactor
x78 --- MTR Tn sec
x79 --- AFident
x80 --- Max OD %
x87 --- SH close Liq
z01 --- EmerC OD day
z02 --- EmerC OD ngt
Y28 --- SH Band
Y29 --- ThDutyCycle
Y30 --- ActDutyCycle
Y31 --- P - Gain
Y32 --- OD Status
Code Short name
x62 --- Reg. Cond.
x63 --- Cutin temp.
x64 --- Cutout temp.
x81 --- TherToggle
x82 --- LoadReq
x84 --- MaxTeOffset
x85 --- MC Liq. Ctrl
x06 --- Night setbck
x17 --- Case shutdwn
x07 --- Forced close
x08 --- Forced cool.
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