Compressor/Pump Control - Danfoss AK-CC55 Water Loop User Manual

AK-CC55 Water Loop
Function Description
Def. start 6 - Hours Time in hours for start of defrost
Def. start 6 - Minutes Time in minutes for when defrost cycle is to be star-
ted
Monday - Follow
schedule
Tuesday - Follow
schedule
Wednesday - Follow
schedule
Thursday - Follow
schedule
Friday - Follow
schedule
Saturday - Follow
schedule
Sunday - Follow
schedule

Compressor/Pump control

Table 25: Compressor/Pump control
Function Description
Control state A Readout of the actual control state of the controller
Thermostat air Thermostat temperature
temp. A
Thermostat cut-in Readout of the actual cut-in value for the thermostat
temp.
Thermostat cut-out Readout of the actual cut-out value for the thermo-
temp. stat
Compressor 1 Actual status of output function
Compressor 2 Actual status of output function
Compressor speed Actual status of output function
Brine pump Actual status of output function
Brine pump speed Actual status of output function
S7 Brine inlet temp. Actual sensor value
S8 Brine outlet Actual sensor value
temp.
Min ON time Minimum time the compressor is to run once it has
been started.
Min OFF time Minimum time the compressor has to be stopped
Delay between Time delay for couplings of two compressors. The
comp. step delay is the time that has to elapse from the first
compressor cuts in and until the next compressor can
cut in.
Step control mode Selection of step control mode for compressors. At se-
quential mode compressor 1 will always be the first to
start and the last to stop. In cyclic mode the run time
between the compressor will be equalized.
Comp. 2 ctrl. Th. Select whether compressor 2 is to be in operation in
band 2 thermostat band 2
Min. speed The minimum allowed speed
Start speed The requested start speed (must be set to a higher
value than "Min. speed"). After start, this speed is
maintained for 10 seconds before speed control is
started
Max. speed The maximum allowed speed
Comp. defrost speed The compressor will run with the defined speed dur-
ing the hot gas defrost
Max. speed slope Limitation on how fast the speed can ramp up/down
(set in % per. second)
© Danfoss | Climate Solutions | 2022.04
Values
0=No, 1=Yes
0=No, 1=Yes
0=No, 1=Yes
0=No, 1=Yes
0=No, 1=Yes
0=No, 1=Yes
0=No, 1=Yes
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, 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
0=OFF, 1=ON
0=OFF, 1=ON
0=OFF, 1=ON
1=Sequential, 2=Cyclic
0=OFF, 1=ON
Code Short name
t06 t06 Def. 6 hr.
t16 t16 Def. 6 min.
t51 t51 Mon.Schedule
t52 t52 Tue.Schedule
t53 t53 Wed.Schedule
t54 t54 Thu.Schedule
t55 t55 Fri.Schedule
t56 t56 Sat.Schedule
t57 t57 Sun.Schedule
Code Short name
u00 u00 Ctrl. state
u17 u17 Ther. air
u90 u90 Cutin temp.
u91 u91 Cutout temp.
u58 u58 Comp1/LLSV
u67 u67 Comp2 relay
u52 u52 Comp. Cap.
U17 U17 Brine pump
U28 U28 Pump speed
u98 u98 S7 temp
u93 u93 S8 temp
c01 c01 Min. On time
c02 c02 Min.Off time
c05 c05 Step delay
c08 c08 Step mode
c85 c85 Cmp2 In Th2
c46 c46 Min speed
c47 c47 Start speed
c48 c48 Max speed
c97 c97 DefrostSpeed
c96 c96 MaxSlopeRate
BC378540472015en-000101 | 54