Danfoss AK-CC 550B Case Controller
Specifications:
- Model: AK-CC 550B
- Power Supply: 230 V a.c., 50/60 Hz
Product Usage Instructions
Additional Connections:
- RS485 (terminal 51, 52, 53)
- RJ45 (for data communication)
- Sensors: S2, S6, S3, S4, S5
- MODBUS (for data communication)
Usage Guidelines:
Ensure all connections comply with the requirements for data communication cables. See literature: RC8AC for more information.
Power Supply:
Ensure the supply voltage is 230 V a.c., 50/60 Hz.
DO1 Connection:
Connect expansion valve type AKV or AKVA. The coil must be a 230 V a.c. coil.
DO2 Alarm Connection:
In alarm situations and when the controller is without power, connect terminal 7 and 8.
Identification
Dimensions
Principle
S2:
Insulate sensor
AKV info !!
AK-CC 550B
| Additional information: | English Manual | RS8GL… | www.danfoss.com |
The controller is provided with signs from the factory indicating application 1.
If you employ another use, signs are provided so that you can mount the relevant one.
Data communication
Important All connections to the data communication MODBUS, DANBUSS and RS 485 must comply with the requirements for data communication cables. See literature: RC8AC.
System manager / Gateway
Display EKA 163 / 164
L < 15 m
L > 15 m
Connections
Overview of outputs and applications.
See also electrical diagrams earlier in the instruction
DI1
Digital input signal.
The defined function is active when the input is short-circuited/opened. The function is defined in o02.
DI2
Digital input signal.
The defined function is active when the input is short-circuited/opened. The function is defined in o37.
Pressure transmitter
AKS 32R
Connect to terminal 30, 31 and 32.
(Used cable 060G1034: Black=30, Blue=31, Brown=32)
The signal from one pressure transmitter can be received by up to 10 controllers. But only if there are no significant pressure decreases between the evaporators to be controlled. See drawing page 36.
S2, S6
Pt 1000 ohm sensor
S6, product sensor
S3, S4, S5
Pt 1000 ohm sensor or PTC 1000 ohm sensor. All have to be of the same type.
S3, air sensor, placed in the warm air before the evaporator
S4, air sensor, placed in the cold air after the evaporator (the need for either S3 or S4 can be deselected in the configuration) S5, defrost sensor, placed on the evaporator
EKA Display
If there is be external reading/operation of the controller, display type EKA 163B or EKA 164B can be connected.
RS485 (terminal 51, 52, 53)
For data communication, but only if a data communication module is inserted in the controller. The module can be a LON RS485, DANBUSS or a MODBUS.
- Terminal 51 = screen
- Terminal 52 = A (A+)
- Terminal 53 = B (B-)
(For LON RS485 and gateway type AKA 245 the gateway must be version 6.20 or higher.)
RJ45
For data communication, but only if a TCP/IP module is inserted in the controller. (OEM)
MODBUS
For data communication.
- Terminal 56 = screen
- Terminal 57 = A+
- Terminal 58 = B-
(Alternatively the terminals can be connected to an external display type EKA 163A or 164A, but then they cannot be used for data communication. Any data communication must then be carried out by one of the other methods.)
Supply voltage
230 V a.c., 50/60 Hz
DO1
Connection of expansion valve type AKV or AKVA. The coil must be a 230 V a.c. coil.
DO2
Alarm
There is a connection between terminal 7 and 8 in alarm situations and when the controller is without power.
Rail heat and heating element in drip tray
There is connection between terminal 7 and 9 when heating takes place.
Night blind
There is connection between terminal 7 and 9 when the night blind is up.
Suction line valve
There is connection between terminal 7 and 9 when the suction line must be open.
DO3
Refrigeration, Rail heat, Heat function, Defrost 2
There is connection between terminal 10 and 11 when the function must be active.
Heating element in drip tray
There is connection between terminal 10 and 11 when heating takes place.
DO4
Defrost
There is connection between terminal 12 and 14 when defrosting takes place.
Hot gas / drain valve
There is connection between terminal 13 and 14 during normal operation.
There is connection between terminal 12 and 14 when the hot gas valves must open.
DO5
Fan
There is connection between terminal 15 and 16 when the fan is on.
DO6
Light relay
There is connection between terminal 17 and 18 when the light must be on.
Rail heat, Compressor 2
There is connection between terminal 17 and 19 when the function must be active.
DI3
Digital input signal.
The signal must have a voltage of 0 / 230 V AC.
The function is defined in o84.
Data communication
If data communication is used, it is important that the installation of the data communication cable is performed correctly.
See separate literature No. RC8AC…
Electric noise
Cables for sensors, DI inputs and data communication must be kept separate from other electric cables:
- Use separate cable trays
- Keep a distance between cables of at least 10 cm
- Long cables at the DI input should be avoided
Installation considerations
Accidental damage, poor installation, or site conditions, can give rise to malfunctions of the control system, and ultimately lead to a plant breakdown. Every possible safeguard is incorporated into our products to prevent this. However, a wrong installation, for example, could still present problems. Electronic controls are no substitute for normal, good engineering practice. Danfoss will not be responsible for any goods, or plant components, damaged as a result of the above defects. It is the installer’s responsibility to check the installation thoroughly, and to fit the necessary safety devices. Special reference is made to the necessity of signals to the controller when the compressor is stopped and to the need of liquid receivers before the compressors. Your local Danfoss agent will be pleased to assist with further advice, etc.
Coordinated defrost via cable connections
The following controllers can be connected up in this way:
EKC 204A, AK-CC 210, AK-CC 250, AK-CC 450, AK-CC 550A,
Refrigeration is resumed when all controllers have “released” the signal for defrost.
Coordinated defrost via data communication
The setting of controllers to coordinate their defrosting takes place in the gateway/system manager.
Refrigeration is resumed when all controllers have “released” the signal for defrost.
Operation
Display
The values will be shown with three digits, and with a setting you can determine whether the temperature is to be shown in °C or in °F.
Light-emitting diodes (LED) on front panel
The LED’s on the front panel will light up when the relevant relay is activated.
The light-emitting diodes will flash when there is an alarm.
In this situation you can download the error code to the display and cancel/sign for the alarm by giving the top button a brief push.
The buttons
When you want to change a setting, the upper and the lower buttons will give you a higher or lower value depending on the button you are pushing. But before you change the value, you must have access to the menu. You obtain this by pushing the upper button for a couple of seconds – you will then enter the column with parameter codes. Find the parameter code you want to change and push the middle buttons until value for the parameter is shown. When you have changed the value, save the new value by once more pushing the middle button.
Examples
Set menu
- Push the upper button until a parameter r01 is shown
- Push the upper or the lower button and find that parameter you want to change
- Push the middle button until the parameter value is shown
- Push the upper or the lower button and select the new value
- Push the middle button againt to freeze the value.
Cutout alarm relay / receipt alarm/see alarm code
- A short press of the upper button
If there are several alarm codes they are found in a rolling stack. Push the uppermost or lowermost button to scan the rolling stack.
Set temperature
- Push the middle button until the temperature value is shown
- Push the upper or the lower button and select the new value
- Push the middle button again to conclude the setting.
Reading the temperature at defrost sensor (Or product sensor, if selected in o92.)
- A short press of the lower button
Manuel start or stop of a defrost
- Push the lower button for four seconds.
Get a good start
With the following procedure you can start regulation very quickly:
- Open parameter r12 and stop the regulation (in a new and not previously set unit, r12 will already be set to 0 which means stopped regulation.)
- Select electrical connection based on the drawings on page 2 and 3
- Open parameter o61 and set the electric connection number in it
- Now select one of the preset settings from the table
Auxiliary schedule for settings (quick-setup) Case Room Defrost stop on Defrost stop on time S5 time S5 Preset settings (o62) 1 2 3 4 5 6 Temperature (SP) 2°C -2°C -28°C 4°C 0°C -22°C Max. temp. setting (r02) 6°C 4°C -22°C 8°C 5°C -20°C Min. temp. setting (r03) 0°C -4°C -30°C 0°C -2°C -24°C Sensor signal for thermo-stat. S4% (r15) 100% 0% Alarm limit high (A13) 8°C 6°C -15°C 10°C 8°C -15°C Alarm limit low (A14) -5°C -5°C -30°C 0°C 0°C -30°C Sensor signal for alarmfunct.S4% (A36) 0% 100% 0% Interval between defrost(d03) 6 h 6h 12h 8h 8h 6h Defrost sensor: 0=time,1=S5, 2=S4 (d10) 0 1 1 0 1 1 DI1 config. (o02) Case cleaning (=10) Door function (=2) Sensor signal for display view S4% (017) 0% - Open parameter o62 and set the number for the array of pre settings.
The few selected settings will now be transferred to the menu. - Select refrigerant via parameter o30
- Open parameter r12 and start the regulation
- Go through the survey of factory settings. The values in the grey cells are changed according to your choice of settings. Make any necessary changes in the respective parameters.
- For network. Set the address in o03
- Send address to system unit:
- MODBUS: Activate scan function in system unit
- If another data communication card is used in the controller:
- LON RS485: Activate the function o04
- DANBUSS: Activate scan function in system unit
- Ethernet: Use the MAC Address
| Parameter | EL-diagram page 2 and 3 | Min.- value | Max.- value | Factory setting | Actual setting |
|||||||||||
| Function | Code | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | |||||
| Normal operation | ||||||||||||||||
| Temperature (setpoint) | – – – | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | -50°C | 50°C | 2 | ||
| Thermostat | ||||||||||||||||
| Differential | r01 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0.1 K | 20 K | 2 | ||
| Max. limitation of setpoint setting | r02 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | -49°C | 50°C | 50 | ||
| Min. limitation of setpoint setting | r03 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | -50°C | 49°C | -50 | ||
| Adjustment of temperature indication | r04 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | -10 | 10 | 0 | ||
| Temperature unit (°C/°F) | r05 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0/°C | 1/F | 0/°C | ||
| Correction of the signal from S4 | r09 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | -10 K | 10 K | 0 | ||
| Correction of the signal from S3 and S3B | r10 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | -10 K | 10 K | 0 | ||
| Manual service, stop regulation, start regulation (-1, 0, 1) | r12 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | -1 | 1 | 0 | ||
| Displacement of reference during night operation | r13 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | -50 K | 50 K | 0 | ||
| Define thermostat function 1=ON/OFF, 2=Modulating | r14 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 1 | ||
| Definition and weighting, if applicable, of thermostat sensors – S4% (100%=S4, 0%=S3) |
r15 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 % | 100 % | 100 | ||
| Time between melt periods | r16 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 hrs | 10 hrs | 1 | ||
| Duration of melt periods | r17 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 min. | 30 min. | 5 | ||
| Temperature setting for thermostat band 2 . As differential use r01 | r21 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | -50°C | 50°C | 2 | ||
| Correction of the signal from S6 | r59 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | -10 K | 10 K | 0 | |||
| Definition and weighting, if applicable, of thermostat sensors when night cover is on. (100%=S4, 0%=S3) | r61 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 % | 100 % | 100 | ||
| Heat function
Neutral zone between refrigeration and heat function |
r62 | 1 | 0 K | 50 K | 2 | |||||||||||
| Time delay at switch between refrigeration and heat function | r63 | 1 | 0 min. | 240 min. | 0 | |||||||||||
| Alarms | ||||||||||||||||
| Delay for temperature alarm | A03 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 min. | 240 min. | 30 | ||
| Delay for door alarm | A04 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 min. | 240 min. | 60 | ||
| Delay for temperature alarm after defrost | A12 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 min. | 240 min. | 90 | ||
| High alarm limit for thermostat 1 | A13 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | -50°C | 50°C | 8 | ||
| Low alarm limit for thermostat 1 | A14 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | -50°C | 50°C | -30 | ||
| High alarm limit for thermostat 2 | A20 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | -50°C | 50°C | 8 | ||
| Low alarm limit for thermostat 2 | A21 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | -50°C | 50°C | -30 | ||
| High alarm limit for sensor S6 at thermostat 1 | A22 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | -50°C | 50°C | 8 | |||
| Low alarm limit for sensor S6 at thermostat 1 | A23 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | -50°C | 50°C | -30 | |||
| High alarm limit for sensor S6 at thermostat 2 | A24 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | -50°C | 50°C | 8 | |||
| Low alarm limit for sensor S6 at thermostat 2 | A25 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | -50°C | 50°C | -30 | |||
| S6 alarm time delay
With setting = 240 the S6 alarm will be omitted |
A26 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 min. | 240 min. | 240 | |||
| Alarm time delay or signal on the DI1 input | A27 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 min. | 240 min. | 30 | ||
| Alarm time delay or signal on the DI2 input | A28 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 min. | 240 min. | 30 | ||
| Signal for alarm thermostat. S4% (100%=S4, 0%=S3) | A36 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 % | 100 % | 100 | ||
| Delay for S6 (product sensor alarm) after defrost | A52 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 min. | 240 min. | 90 | |||
| Delay for temperature alarm S3B | A53 | 1 | 1 | 0 min. | 240 min. | 90 | ||||||||||
| Compressor | ||||||||||||||||
| Min. ON-time | c01 | 1 | 1 | 1 | 1 | 0 min. | 30 min. | 0 | ||||||||
| Min. OFF-time | c02 | 1 | 1 | 1 | 1 | 0 min. | 30 min. | 0 | ||||||||
| Time delay for cut in of comp.2 | c05 | 1 | 0 sec | 999 sec | 5 | |||||||||||
| Defrost | ||||||||||||||||
| Defrost method: 0=Off, 1= EL, 2= Gas | d01 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0/Off | 2/gAs | 1/EL | ||
| Defrost stop temperature | d02 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0°C | 50°C | 6 | ||
| Interval between defrost starts | d03 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 hrs/Off | 240 hrs | 8 | ||
| Max. defrost duration | d04 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 min. | 360 min. | 45 | ||
| Displacement of time on cut in of defrost at start-up | d05 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 min. | 240 min. | 0 | ||
| Drip off time | d06 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 min. | 60 min. | 0 | ||
| Delay for fan start after defrost | d07 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 min. | 60 min. | 0 | ||
| Fan start temperature | d08 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | -50 °C | 0 °C | -5 | ||
Fan cut in during defrost 0: Stopped
|
d09 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 2 | 1 | ||
| Continued | Code | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | Min. | Max. | Fac. | Actual | |
| Defrost sensor: 0 =Stop on time, 1=S5, 2=S4, 3=Sx (Application 1-8 and 10: both S5 and S6. Application 9: S5 and S5B) |
d10 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 3 | 0 | ||
| Pump down delay | d16 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 min. | 60 min. | 0 | ||
| Drain delay (used at hot gas defrost only) | d17 | 1 | 0 min. | 60 min. | 0 | |||||||||||
| Max. aggregate refrigeration time between two defrosts | d18 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 hrs | 48 hrs | 0/OFF | ||
| Heat in drip tray. Time from defrosting stops to heating in the drip tray is switched off | d20 | 1 | 0 min. | 240 min. | 30 | |||||||||||
| Adaptive defrost: 0=not active, 1=monitoring only, 2=skip allowed day, 3=skip allowed both day and night, 4=own assessment + all schedules |
d21 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 4 | 0 | ||
| Time delay before opening of hot gas valve | d23 | 1 | 0 min | 60 min | 0 | |||||||||||
| Rail heat during defrost 0=off. 1=on. 2=Pulsating | d27 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 2 | 2 | |||||
| Max. duration of -d- in display | d40 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 5 min. | 240 min. | 30 min. | ||
| Temperature limit for Fan stop during defrost when d09 set to 3 | d41 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | -20°C | 20°C | 0°C | ||
| Injection control function | ||||||||||||||||
| Max. value of superheat reference (dry expansion) | n09 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2°C | 20°C | 12 | ||
| Min. value of superheat reference (dry expansion) | n10 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2°C | 20°C | 3 | ||
| MOP temperature. Off if MOP temp. = 15.0 °C | n11 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | -50°C | 15°C | 15 | ||
| Period time of AKV pulsation Only for trained personnel | n13 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 3 sec | 6 sec | 6 | ||
| Max limitation of superheat reference when Flooding activated | P86 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1°C | 20°C | 3 | ||
| Min limitation of superheat reference when Flooding activated | P87 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0°C | 20°C | 1 | ||
| Fan | ||||||||||||||||
| Fan stop temperature (S5) | F04 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | -50°C | 50°C | 50 | ||
| Pulse operation on fans: 0=No pulse operation, 1=At thermostat cuts out only, 2= Only at thermostat cut outs during night operation | F05 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 2 | 0 | ||
| Period time for fan pulsation (on-time + off-time) | F06 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 min. | 30 min. | 5 | ||
| On-time in % of period time | F07 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 % | 100 % | 100 | ||
| Real time clock | ||||||||||||||||
| Six start times for defrost. Setting of hours. 0=OFF |
t01 -t06 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 hrs | 23 hrs | 0 | ||
| Six start times for defrost. Setting of minutes. 0=OFF |
t11 -t16 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 min. | 59 min. | 0 | ||
| Clock – Setting of hours | t07 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 hrs | 23 hrs | 0 | ||
| Clock – Setting of minute | t08 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 min. | 59 min. | 0 | ||
| Clock – Setting of date | t45 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 day | 31 day | 1 | ||
| Clock – Setting of month | t46 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 mon. | 12 mon. | 1 | ||
| Clock – Setting of year | t47 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 year | 99 year | 0 | ||
| Miscellaneous | ||||||||||||||||
| Delay of output signals after power failure | o01 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 sec | 600 sec | 5 | ||
| Input signal on DI1. Function: 0=not used. 1=status on DI1. 2=door function with alarm when open. 3=door alarm when open. 4=defrost start (pulse-signal). 5=ext. main switch. 6=night operation 7=thermostat band changeover (activate r21). 8=alarm function when closed. 9=alarm function when open. 10=case cleaning (pulse signal). 11=forced cooling at hot gas defrost, 12=night cover. 15=appliance shutdown. 20=refrigerant leak alarm. 21=activate flooding. |
o02 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 21 | 0 | ||
| Network address | o03 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 240 | 0 | ||
| On/Off switch (Service Pin message) IMPORTANT! o61 must be set prior to o04 (used at LON 485 only) | o04 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0/Off | 1/On | 0/Off | ||
| Access code 1 (all settings) | o05 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 100 | 0 | ||
| Used sensor type : 0=Pt1000, 1=Ptc1000, | o06 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0/Pt | 1/Ptc | 0/Pt | ||
| Max hold time after coordinated defrost | o16 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 min. | 360 min. | 20 | ||
| Select signal for display view. S4% (100%=S4, 0%=S3) | o17 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 % | 100 % | 100 | ||
| Pressure transmitter working range – min. value | o20 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | -1 bar | 5 bar | -1 | ||
| Pressure transmitter working range – max. value | o21 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 6 bar | 200 bar | 12 |
| Continued | Code | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | Min. | Max. | Fac. | Actual | |
| Refrigerant setting:
1=R12. 2=R22. 3=R134a. 4=R502. 5=R717. 6=R13. |
o30 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 42 | 0 | ||
| Input signal on DI2. Function:
(0=not used. 1=status on DI2. 2=door function with alarm when open. 3=door alarm when open. 4=defrost start (pulse-signal). 5=ext. main switch 6=night operation 7=thermostat band changeover (activate r21). 8=alarm function when closed. 9=alarm function when open. |
o37 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 21 | 0 | ||
| Configuration of light function: 1=Light follows day /night operation, 2=Light control via data communication via ‘o39’, 3=Light control with a DI-input, 4=As “2”, but light switch on and night cover will open if the network cut out for more than 15 minutes. | o38 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 4 | 1 | ||||
| Activation of light relay (only if o38=2) On=light | o39 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0/Off | 1/On | 0/Off | ||||
| Rail heat On time during day operations | o41 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 % | 100 % | 100 | |||||
| Rail heat On time during night operations | o42 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 % | 100 % | 100 | |||||
| Rail heat period time (On time + Off time) | o43 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 6 min. | 60 min. | 10 | |||||
| Case cleaning. 0=no case cleaning. 1=Fans only. 2=All output Off. | *** | o46 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 2 | 0 | |
| Selection of EL diagram. See overview page 12 and 13 | * | o61 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 10 | 1 | |
| Download a set of predetermined settings. See overview page 27. | * | o62 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 6 | 0 | |
| Access code 2 (partial access) | *** | o64 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 100 | 0 | |
| Replace the controllers factory settings with the present settings | o67 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0/Off | 1/On | 0/Off | ||
| Input signal on DI3. Function: (high voltage input) (0=not used. 1=status on DI2. 2=door function with alarm when open. 3=door alarm when open. 4=defrost start (pulse-signal). 5=ext. main switch 6=night operation, 7=thermostat band changeover (activate r21). 8=Not used. 9=Not used. 10=case cleaning (pulse signal). 11=forced cooling at hot gas defrost, 12=night cover. 13=Not used. 14=Refrigeration stopped (forced closing)). 15=appliance shutdown. 21=activate flooding. |
o84 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 21 | 0 | ||
| Rail heat control 0=not used, 1=pulse control with timer function (o41 and o42), 2=pulse control with dew point function |
o85 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 2 | 0 | |||||
| Dew point value where the rail heat is minimum | o86 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | -10°C | 50°C | 8 | |||||
| Dew point value where the rail heat is 100% on | o87 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | -9°C | 50°C | 17 | |||||
| Lowest permitted rail heat effect in % | o88 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 % | 100 % | 30 | |||||
| Time delay from “open door” refrigeration is started | o89 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 min. | 240 min. | 30 | ||
| Fan operation on stopped refrigeration (forced closing): 0 = Stopped (defrosting permitted) 1 = Running (defrosting permitted) 2 = Stopped (defrosting not permitted) 3 = Running (defrosting not permitted) |
o90 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 3 | 1 | ||
| Definition of readings on lower button: 1=defrost stop temperature, 2=S6 temperature, 3=S3 temperature , 4=S4 temperature |
o92 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 3 | 1 | ||
| Display of temperature 1= u56 Air temperature (set automtically to 1 at application 9) 2= u36 product temperature |
o97 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 1 | ||
| Light and night blinds defined
0: Light is switch off and night blind is open when the main switch is off |
o98 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 0 |
| Continued | Code | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | Min. | Max. | Fac. | Actual | |
| Configuration of alarm relay The alarm relay will be activated upon an alarm signal from the following groups: 0 – Alarm relay not used 1 – High temperature alarms 2 – Low temperature alarms 4 – Sensor error 8 – Digital input enabled for alarm 16 – Defrosting alarms 32 – Miscellaneous 64 – Injection alarms The groups that are to activate the alarm relay must be set by using a numerical value which is the sum of the groups that must be activated. (E.g.: a value of 5 will activate all high temperature alarms and all sensor error. |
P41 | 1 | 1 | 1 | 1 | 1 | 0 | 127 | 111 | |||||||
| Service | ||||||||||||||||
| Temperature measured with S5 sensor | u09 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | *) Can only be set when regulation is stopped (r12=0) **) Can be controlled manually, but only when r12=-1 ***) With access code 2 the access to these menus will be limited Factory settings are indicated for standard units. Other code numbers have customized settings. |
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| Status on DI1 input. on/1=closed | u10 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | |||||
| Actual defrost time (minutes) | u11 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | |||||
| Temperature measured with S3 sensor | u12 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | |||||
| Status on night operation (on or off) 1=on | u13 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | |||||
| Temperature measured with S4 sensor | u16 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | |||||
| Thermostat temperature | u17 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | |||||||
| Run time of thermostat (cooling time) in minutes | u18 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | |||||
| Temperature of evaporator outlet temp. | u20 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | |||||
| Superheat across evaporator | u21 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | |||||
| Reference of superheat control | u22 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | |||||
| Opening degree of AKV valve | ** | u23 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | ||||
| Evaporating pressure Po (relative) | u25 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | |||||
| Evaporator temperature To (Calculated) | u26 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | |||||
| Temperature measured with S6 sensor (product temperature) | u36 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | ||||||
| Status on DI2 output. on/1=closed | u37 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | |||||
| Air temperature . Weighted S3 and S4 | u56 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | |||||
| Measured temperature for alarm thermostat | u57 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | |||||
| Status on relay for cooling | ** | u58 | 1 | 1 | 1 | 1 | ||||||||||
| Status on relay for fan | ** | u59 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | ||||
| Status on relay for defrost | ** | u60 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | |||||
| Status on relay for rail heat | ** | u61 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | |||||||
| Status on relay for alarm | ** | u62 | 1 | 1 | 1 | 1 | 1 | |||||||||
| Status on relay for light | ** | u63 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | ||||||
| Status on relay for valve in suction line | ** | u64 | 1 | |||||||||||||
| Status on relay for compressor 2 | ** | u67 | 1 | |||||||||||||
| Temperature measured with S5B sensor | u75 | 1 | ||||||||||||||
| Temperature measured with S3B sensor | u76 | 1 | 1 | |||||||||||||
| Status on relay for hot gas- / drain valve | ** | u80 | 1 | |||||||||||||
| Status on relay for heating element in drip tray | ** | u81 | 1 | |||||||||||||
| Status on relay for night blinds | ** | u82 | 1 | |||||||||||||
| Status on relay for defrost B | ** | u83 | 1 | |||||||||||||
| Status on relay for heat function | ** | u84 | 1 | |||||||||||||
| Readout of the actual rail heat effect | u85 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | ||||||||
| 1: Thermostat 1 operating, 2: Thermostat 2 operating | u86 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | |||||
| Status on high voltage input DI3 | u87 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | |||||
| Readout of thermostats actual cut in value | u90 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | |||||
| Readout of thermostats actual cut out value | u91 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | |||||
| Readout of status on the adaptive defrost 0: Off. Function is not activated and are zero set 1: Sensor error or S3/S4 are reversed. 2: Tuning is in progress 3: Normal 4: Light build-up of ice 5: Medium build-up of ice 6: Heavy build-up of ice |
U01 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | |||||
| Number of defrosts carried out since the initial power up or since the resetting of the function | U10 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | |||||
| Number of defrosts skipped since the initial power up or since the resetting of the function | U11 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | |||||
| Measured temperature for alarm thermostat in section B | U34 | 1 | 1 | |||||||||||||
| Air temperature in section B | U35 | 1 | 1 | |||||||||||||
| Fault message | ||
| In an error situation the LED’s on the front will flash and the alarm relay will be activated. If you push the top button in this situation you can see the alarm report in the display. There are two kinds of error reports – it can either be an alarm occurring during the daily operation, or there may be a defect in the installation. A-alarms will not become visible until the set time delay has expired. E-alarms, on the other hand, will become visible the moment the error occurs. (An A alarm will not be visible as long as there is an active E alarm). Here are the messages that may appear: |
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| Code / Alarm text via data communication | Description | Alarm relay groups (P41) |
| A1/— High t. alarm | High temperature alarm | 1 |
| A2/— Low t. alarm | Low temperature alarm | 2 |
| A4/— Door alarm | Door alarm | 8 |
| A5/— Max hold time | The ”o16” function is activated during a coordinated defrost | 16 |
| A10/— Inject prob. | Control problem | 64 |
| A11/— No Rfg. sel. | No refrigerant selected | 64 |
| A13/— High temp S6 | Temperature alarm. High S6 | 1 |
| A14/— Low temp S6 | Temperature alarm. Low S6 | 2 |
| A15/— DI1 alarm | DI1 alarm | 8 |
| A16/— DI2 alarm | DI2 alarm | 8 |
| A45/— Standby mode | Standby position (stopped refrigeration via r12 or DI input) | – |
| A59/— Case clean | Case cleaning. Signal from DI input | – |
| A70/— High temp S3B | High temperature alarm, B section | 1 |
| A71/— Low temp S3B | Low temperature alarm, B section | 2 |
| AA2/— Refg. leak | Refrigerant leak alarm | 8 |
| AA3/— CO2 alarm | CO2 leak alarm | 8 |
| — AD fault | Error in the adaptive defrost function | 16 |
| — AD Iced | Evaporator is iced up. Reduction of air flow | 16 |
| — AD not defr. | Defrost of evaporator is not satisfactory | 16 |
| — AD flash gas. | Flash gas is formed at the valve | 16 |
| E1/— Ctrl. error | Faults in the controller | 32 |
| E6/— RTC error | Check clock | 32 |
| E20/— Pe error | Error on pressure transmitter Pe | 64 |
| E24/— S2 error | Error on S2 sensor | 4 |
| E25/— S3 error | Error on S3 sensor | 4 |
| E26/— S4 error | Error on S4 sensor | 4 |
| E27/— S5 error | Error on S5 sensor | 4 |
| E28/— S6 error | Error on S6 sensor | 4 |
| E34/— S3 error B | Error on S3B sensor | 4 |
| E37/— S5 error B | Error on S5B sensor | 4 |
| —/— Max Def. Time | Defrost stopped based on time instead of, as wanted, on temperature | 16 |
| Operating status | (Measurement) | |
| The controller goes through some regulating situations where it is just waiting for the next point of the regulation. To make these “why is nothing happening” situations visible, you can see an operating status on the display. Push briefly (1s) the upper button. If there is a status code, it will be shown on the display. The individual status codes have the following meanings: | Ctrl. state: (Shown in all menu displays) | |
| Normal regulation | S0 | 0 |
| Waiting for end of the coordinated defrost | S1 | 1 |
| When the compressor is operating it must run for at least x minutes. | S2 | 2 |
| When the compressor is stopped, it must remain stopped for at least x minutes. | S3 | 3 |
| The evaporator drips off and waits for the time to run out | S4 | 4 |
| Refrigeration stopped by main switch. Either with r12 or a DI-input | S10 | 10 |
| Refrigeration stopped by thermostat | S11 | 11 |
| Defrost sequence. Defrost in progress | S14 | 14 |
| Defrost sequence. Fan delay — water attaches to the evaporator | S15 | 15 |
| Refrigeration stopped due to open ON input or stopped regulation | S16 | 16 |
| Door is open. DI input is open | S17 | 17 |
| Melt function in progress. Refrigeration is interrupted | S18 | 18 |
| Modulating thermostat control | S19 | 19 |
| Emergency cooling due to sensor error *) | S20 | 20 |
| Regulation problem in the injections function | S21 | 21 |
| Start-up phase 2. Evaporator being charged | S22 | 22 |
| Adaptive control | S23 | 23 |
| Start-up phase 1. Signal reliability from sensors is controlled | S24 | 24 |
| Manual control of outputs | S25 | 25 |
| No refrigerant selected | S26 | 26 |
| Case cleaning | S29 | 29 |
| Forced cooling | S30 | 30 |
| Delay on outputs during start-up | S32 | 32 |
| Heat function r36 is active | S33 | 33 |
| Appliance shutdown | S45 | 45 |
| Flood evap. function is active | S48 | 48 |
| Other displays: | ||
| The defrost temperature cannot be displayed. There is stop based on time | non | |
| Defrost in progress / First cooling after defrost | -d- | |
| Password required. Set password | PS | |
| Regulation is stopped via main switch | OFF |
*) Emergency cooling will take effect when there is lack of signal from a defined S3 or S4 sensor. The regulation will continue with a registered average cut in frequency. There are two registered values – one for day operation and one for night operation.
Data communication
The importance of individual alarms can be defined with a setting. The setting must be carried out in the group “Alarm destinations”
| Settings from System manager |
Settings from AKM (AKM destination) |
Log | Alarm relay | Send via Network |
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| Non | High | Low-High | ||||
| High | 1 | X | X | X | X | |
| Middle | 2 | X | X | X | ||
| Low | 3 | X | X | X | ||
| Log only | X | |||||
| Disabled | ||||||
FAQ
- What type of cable should be used for data communication connections?
A: Data communication MODBUS, DANBUSS, and RS485 connections must comply with the requirements for data communication cables. See literature: RC8AC for details. - How many controllers can receive the signal from one pressure transmitter?
A: The signal from one pressure transmitter can be received by up to 10 controllers, provided there are no significant pressure decreases between the evaporators to be controlled. - What are the specifications for the power supply?
A: The product requires a supply voltage of 230 V a.c., 50/60 Hz.
Documents / Resources
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Danfoss AK-CC 550B Case Controller [pdf] Instructions AK-SM..., AK-CC 550B, AKA 245 version 6.20, AK-CC 550B Case Controller, AK-CC 550B, Case Controller, Controller |
