Danfoss AK-CC55 Compact - Page 56

Function
Description
Values
Code
Short name
Superheat Tn A
Integration time of PI controller adjusting the valve
opening degree (expert setting)
x72
--- SH Tn
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
Y33
--- S2 Stability
S2 Std deviation
Expert injection setting - contact Danfoss for further
information
Y34
--- S2 Std Dev
Te feedback gain A
Gain factor for feedback of evaporating temperature
signal Te to PI controller controlling the superheat
(expert setting)
x73
--- Te-gain
Kp MTR control A
Amplication factor for modulating temperature con-
trol (Expert setting)
x77
--- MTR Kpfactor
Tn MTR control A
Integration time for modulating temperature control
(Expert setting)
x78
--- MTR Tn sec
AFident A
Expert readout - contact Danfoss for further informa-
tion
x79
--- AFident
Calculated Max OD
A
Calculated maximum opening degree of injection
valve (expert readout)
x80
--- Max OD %
Superheat close liq-
uid ctrl. A
Minimum limit of superheat where the valve is clos-
ing duting adaptive liquid control
x87
--- SH close Liq
Emergency OD day
Average opening degree of liquid line solenoid valve
during day operation
z01
--- EmerC OD day
Emergency OD
night
Average opening degree of liquid line solenoid valve
during night operation
z02
--- EmerC OD ngt
SH Band
Expert injection setting - contact Danfoss for further
information
Y28
--- SH Band
Injection duty cycle
SP
Expert setting - contact Danfoss for further informa-
tion
Y29
--- ThDutyCycle
Injection duty cycle
Expert injection setting - contact Danfoss for further
information
Y30
--- ActDutyCycle
P-gain
Expert injection setting - contact Danfoss for further
information
Y31
--- P - Gain
OD Ctrl. status
Readout showing which part of the injection function
that is in control of the valve opening degree
Values must be changed as per below:
0=Adaptive SH control
1=MOP
2=Superheat close
3=MTR
Y32
--- OD Status
Table 41: Advanced → Master control
Function
Description
Values
Code
Short name
Regulation condi-
tion A
Readout of the actual control state of the controller
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
x62
--- Reg. Cond.
MC Actual cutin
temp.
x63
--- Cutin temp.
MC Actual cutout
temp.
x64
--- Cutout temp.
MC Ther. toggle
Master control signal used for switching case load
ON/OFF depending on load condition
0=No action, 1=Toggle ON, 2=Toggle OFF
x81
--- TherToggle
MC Load request
Master control signal used to control load balance be-
tween multiple case controllers on the same suction
line
x82
--- LoadReq
MC Max Te oset
Requested oset to actual evporating temperature in
order to keep the air temperature at the actual set
point
x84
--- MaxTeOset
MC Liquid control
Master control signal allowing switch to adaptive liq-
uid control
0=OFF, 1=ON
x85
--- MC Liq. Ctrl
MC Night setback
Master control signal for changing between day and
night time operation
0=OFF, 1=ON
x06
--- Night setbck
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
0=OFF, 1=ON
x17
--- Case shutdwn
MC Forced closing
Master control signal that will close the injection
valve
0=OFF, 1=ON
x07
--- Forced close
MC Forced cooling
Master control signal that will provide forced cooling
0=OFF, 1=ON
x08
--- Forced cool.
AK-CC55 Compact
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