Alarm Limits And Delays - Danfoss AK-CC55 Multi Coil User Manual

AK-CC55 Multi Coil
Function Description
Differential 1 When the temperature is higher than the set cut-out
+ the set differential, the compressor relay will be cut-
in. It will cut-out again when the temperature comes
down to the set cut-out limit.
Cut-out 2 Setpoint. The thermostat's cut-out value when the
given thermostat band is in use
Differential 2 When the temperature is higher than the set cut-out
+ the set differential, the compressor relay will be cut-
in. It will cut-out again when the temperature comes
down to the set cut-out limit
Max cut-out limit Setpoint limitation - The controller's setting range for
the thermostat setpoint may be narrowed down, so
that too high or too low values are not set accidental-
ly - with resulting damages.To avoid a too high set-
ting of the setpoint, the max. allowable reference val-
ue may be lowered
Min cut-out limit Setpoint limitation - The controller's setting range for
the thermostat setpoint may be narrowed down, so
that too high or too low values are not set accidental-
ly - with resulting damages.To avoid a too low setting
of the setpoint, the min. allowable reference value
may be increased
Night offset Night setback value.The thermostat's reference will be
the setpoint plus this value when the controller
changes over to night operation.
Air heater neutral Heat function. Set the width of the Neutral Zone for
zone changeover from cooling to heating
Air heater start de- Time delay on transition from refrigeration phase to
lay heating phase (there is no time delay on transition
from heating phase to refrigeration)
Melt interval Melt function. Only for control of MT cases/rooms (-5
to +10°C). The function ensures that the evaporator
will not be blocked by ice crystals. Here you set how
often the function is to stop the refrigeration and
hence transform the ice crystals to water.
Melt period Melt period. Here you set how long an ongoing melt
function is to last

Alarm limits and delays

Table 28: Alarm limits and delays
Function Description
Alarm status Actual alarm status
Control state A Readout of the actual control state of the controller
Control state B Readout of the actual control state of the controller
Control state C Readout of the actual control state of the controller
Alarm air temp. A Measured temperature for alarm thermostat
© Danfoss | Climate Solutions | 2022.08
Values
Values
0=OFF, 1=ON
0=Normal ctrl., 1=Hold after defrost, 4=Drip off,
10=Main switch OFF, 11=Thermostat cutout, 12=Frost
protection S4, 13=Not_used, 14=Defrost, 15=Fan de-
lay, 16=Forced closing, 17=Door open, 18=Melt peri-
od, 19=Modulating temp. control, 20=Emergency
control, 23=Adaptive superheat control, 24=Start in-
jection, 25=Manual control, 26=No refrigerant selec-
ted, 29=Case cleaning, 30=Forced cooling, 31=Door
open, 32=Power-up delay, 33=Air heating, 45=Shut
down controller, 48=Adaptive liquid control
0=Normal ctrl., 1=Hold after defrost, 4=Drip off,
10=Main switch OFF, 11=Thermostat cutout, 12=Frost
protection S4, 13=Not_used, 14=Defrost, 15=Fan de-
lay, 16=Forced closing, 17=Door open, 18=Melt peri-
od, 19=Modulating temp. control, 20=Emergency
control, 23=Adaptive superheat control, 24=Start in-
jection, 25=Manual control, 26=No refrigerant selec-
ted, 29=Case cleaning, 30=Forced cooling, 31=Door
open, 32=Power-up delay, 33=Air heating, 45=Shut
down controller, 48=Adaptive liquid control
0=Normal ctrl., 1=Hold after defrost, 4=Drip off,
10=Main switch OFF, 11=Thermostat cutout, 12=Frost
protection S4, 13=Not_used, 14=Defrost, 15=Fan de-
lay, 16=Forced closing, 17=Door open, 18=Melt peri-
od, 19=Modulating temp. control, 20=Emergency
control, 23=Adaptive superheat control, 24=Start in-
jection, 25=Manual control, 26=No refrigerant selec-
ted, 29=Case cleaning, 30=Forced cooling, 31=Door
open, 32=Power-up delay, 33=Air heating, 45=Shut
down controller, 48=Adaptive liquid control
Code Short name
r01 r01 Differential
r21 r21 Cutout 2
r93 r93 Diff Th2
r02 r02 Max cutout
r03 r03 Min cutout
r13 r13 Night offset
r62 r62 Heat NZ
r63 r63 HeatStartDel
r16 r16 MeltInterval
r17 r17 Melt period
Code Short name
x16 --- Sum alarm
u00 u00 Ctrl. state
U74 U74 Ctrl.State B
U83 U83 Ctrl.State C
u57 u57 Alarm air
BC365022028193en-000201 | 44