Danfoss AK-CC55 Compact User guide

User Guide

Case/room controller (EEV) Type AK-CC55 Compact

SW Ver. 2.0x

For refrigeration appliances and cold storage rooms.

AK-CC55 Compact

The temperature in the appliance is registered by one or two temperature sensors which are located in the air ow before the evaporator (S3) or after the evaporator (S4) respectively. A setting for thermostat, alarm thermostat and display reading determines the inuence the two sensor values should have for each individual function.

The temperature of the evaporator is registered with the S5 sensor which can be used as a defrosting sensor.

In addition to the output of the electronic AKV injection valve, the controller has relay outputs which are dened by the application setting

Figure 1: AK-CC55 with evaporator, AKV valve and sensor positions

AK-CC55 Compact

AK-CC55 Single Coil

AK-CC55 Single Coil UI

AK-CC55 Multi Coil

Product image

Valve

1 x TXV or AKV

1 x AKV

3 x AKV

Digital Output3554

Digital input

1 (2)

3 (2)

Analogue Output1111

Analogue Input

5 (4)

6 (7)

Display

1 remote

2 remote

1 remote + 1 Integrated

2 remote

Comm. module

Modbus

Optional comm. module

LON module

Application

AK-CC55 Compact

AK-CC55 Single Coil

AK-CC55 Single Coil UI

AK-CC55 Multi Coil

AKV - application (electrically operated expansion valve)

xxx

0 – 10 V to control external stepper driver

x

TXV - application (thermostatic expansion valve + solenoid valve or compressor)

x

Remote hot gas - application

x

One valve, one evaporator, one refrigeration section

xxx

One valve, one evaporator, two refrigeration sections

x

One valve and two evaporators, two refrigeration sections

x

Two valves and two evaporators (same refrigeration section)

x

Three valves and three evaporators (same refrigeration section)

x

Custom conguration of relay outputs

x

Two compressorsxx

Heating functionxx

Control of air humidity

x

Adaptive superheat

xxx

Adaptive liquid control (zero superheat control for transcritical CO2 systems with liquid ejectors)

xxx

Adaptive defrosting

x

Product sensor

x

RS485 Lon, option (AK-OB55)

x

AK-CC55 Compact

Portfolio overview

The AK-CC55 portfolio contains four controllers with dierent functionalities and application settings, as outlined in the table.

Table 1: AK-CC55 Portfolio

Function overview

Table 2: AK-CC55 function overview by type

Danfoss

84B8235

Compact

System Manager

AKA 245: LON units only and max 250 controller parameters

Multi Coil

KoolProg

Single Coil UI

AK-UI Info

AK-UI Set

AK-UI Bluetooth

Bluetooth

AK-CC55 Connect

Smart Device (IOS

or Android)

Modbus

LON/ TCP/IP (SNMP)

Display Bus

Modbus

LON/ TCP/IP (SNMP)

Modbus

Case Controller Remote Display Service App

AK-CC55 Compact

Connectivity

The diagram outlines the connectivity options presented by AK-CC55 for the design of system functionality.

Figure 2: Connectivity

Data communication

The AK-CC55 Compact controller has built-in MODBUS data communication only.

AK-CC55 Compact

Compact version for controlling one evaporator.

An application mode setting will congure inputs and outputs for the desired use. There are nine applications to choose from.

Regulation is performed using a TXV in combination with a liquid line solenoid valve, controlling a compressor or an AKV expansion valve.

AK-CC55 Compact is without display, and can be extended with one external display (see Figure 3 and Figure 4):

Figure 3: AK-CC55 Compact Figure 4: AK-CC55 Compact with external display.

External display

There are three versions available with dierent functions:

• AK-UI55 Info: Temperature display.

• AK-UI55 Set: Temperature display with control buttons on the front.

• AK-UI55 Bluetooth: Temperature display with Bluetooth communication, for use with AK-CC55 Connect Mobile app.

AK-CC55 Compact

Figure 5: AK-UI55 Info Figure 6: AK-UI55 Set Figure 7: AK-UI55 Bluetooth

Danfoss

84B3281

S5

S3

S4

S2

P

AKV

AK-CC55 Compact

Controller functionality

Functions

• Day/night thermostat with ON/OFF or modulating principle.

• Switch between thermostat settings via digital input.

• Adaptive superheat control.

• Modulating PWM control of brine valve

• Start of defrost via schedule, digital input, network or setting display.

• Natural, electric, simple hot gas, or warm brine defrost.

• Stop of defrost on time and/or temperature.

• Coordination of defrosting among several controllers in a line-up.

• Pulsing or ECO control of fans when thermostat is satised.

• Appliance cleaning function for documentation of HACCP procedure.

• Rail heat control via day/night load or dew point.

• Door function.

• Control of two compressors.

• Control of night blinds.

• Light control.

• Heat thermostat.

• High accuracy inputs:

◦ to guarantee a better measuring accuracy than stated in the standard EN ISO 23953-2 without subsequent

calibration (Pt1000 ohm sensor).

• Integrated MODBUS communication

Liquid injection by use of AKV

Liquid injection in the evaporator is controlled by an electronic injection valve of the type AKV. The valve operates as both expansion valve and solenoid valve. The controller opens and closes the valve based on sensor readings. The function contains an adaptive algorithm which independently adjusts the valve’s opening so that the evaporator constantly supplies optimum amount of refrigerant.

Superheat is measured via:

Pressure sensor Pe and temperature sensor S2. By using a pressure sensor and temperature sensor, a correct measurement of superheat is achieved under all conditions which ensures a very robust and precise control. The signal from one pressure transmitter can be shared by max. 10 controllers, but only if there is no signicant pressure dierence between the evaporators in question.

Figure 8: Liquid injection function with AKV valve

Dry expansion (MSS Control)

Adaptive liquid control (ALC)

S4

S5

S3

Danfoss

84B3267

AK-CC55 Compact

There are two parallel settings for superheat:

• Dry expansion, which does not allow liquid ow on the outlet of the evaporator.

• Adaptive liquid control in transcritical CO2 systems, which allows liquid ow. This type of control requires that the controller receives an on/o signal from (for example) a suction accumulator in the suction line. A level switch in the tank will register when the liquid level exceeds the max. level. When this happens, the controller will switch to dry expansion, and then back to liquid control when the liquid level has dropped. The function is dened in setting o02, o37 or o84.

The function can also be activated via data communication from a system unit. If the adaptive liquid control signal is lost, the controller will automatically switch back to dry expansion.

Table 3: Liquid injection

WARNING:



Accidental actuation may allow liquid throughput to the compressor. It is the installer’s responsibility to ensure that signal loss to the controller will not result in liquid throughput to the compressor. Danfoss accepts no

responsibility for damage resulting from inadequate installation.

Thermostatic expansion valve control

In the compact version the refrigeration (injection) can be controlled either by starting/stopping a compressor or by opening/closing a solenoid valve in the liquid line.

Figure 9: AK-CC55 Compact with evaporator, solenoid valve, expansion valve and sensor positions

Brine control

When changing from ON/OFF control to modulating control in TXV applications, a solenoid valve can be PWM controlled with a set period time from 30 – 900 sec. A number of additional brine control parameters are available in the injection control menu. When brine control is enabled, a dedicated brine defrost can also be set up in order to force open the brine valve while defrosting.

ON/OFF control

Modulating control

AK-CC55 Compact

Temperature control

The temperature in the appliance is registered by one or two temperature sensors which are located in the return air before the evaporator (S3) or after the evaporator (S4) respectively. A setting for the thermostat, night thermostat, alarm thermostat and display reading determines how much the two sensor values should inuence each individual function, e.g. 50% of S4 will produce an equal value from both sensors.

The actual temperature control can take place in two ways:

1.

As an ordinary ON/OFF regulation with a dierential, or

2.

As a modulating control where the temperature variation will not be nearly as high as in ON/OFF control.

There is, however, a limit to the use of a modulating control as it can only be used in remote cabinets. It is not recommended to use modulating thermostat control in low temperature applications. In applications with one evaporator and one compressor, the thermostat function with ON/OFF control should be selected. In remote cabinets, the thermostat function may either be selected for ON/OFF control or modulating control.

Table 4: Control methods

Temperature monitoring

Just as is possible for the thermostat, the alarm monitoring can be set with a weighting between S3 and S4 so that you can decide how much the two sensor values should inuence the alarm monitoring. Minimum and maximum limits can be set for alarm temperature and time delays. A longer time delay can be set for high temperature alarm. This time delay is active for pull-down, after defrosting, appliance cleaning and start-up.

Thermostat bands

Thermostat bands can be used benecially for appliances where dierent product types are stored, which requires dierent temperature conditions. It is possible to change between the two dierent thermostat bands via a contact

signal on a digital input. Separate thermostat and alarm limits can be set for each thermostat band – also for the product sensor.

Figure 10: Thermostat band function with two dierent band settings

Night setback of thermostat value

In refrigeration appliances there may be big load dierences between the shop’s opening and closing hours, especially if night lids/blinds are used. The thermostat reference may be raised here without it having any eect on the product temperature.

-++°C1÷+

Fan2÷÷O3++°C

AK-CC55 Compact

Change-over between day and night operation can take place as follows:

• via an external switch connected to a digital input.

• via a signal from the data communication system.

Figure 11: Thermostat band function with Night setback

Appliance cleaning

This function makes it easy for the shop’s sta to carry out a cleaning of the appliance according to a standard procedure. Appliance cleaning is activated via a pulse signal – as a rule via a key switch placed on the appliance or via the AK-CC55 Connect mobile app.

Appliance cleaning is carried out via three phases:

1.

At the rst activation, the refrigeration is stopped, but the fans keep on operating in order to defrost the evaporators. ”Fan” is shown on the display.

2.

At the second activation, the fans are also stopped and the appliance can now be cleaned. ”OFF” is shown on the display.

3.

At the third activation, refrigeration is recommenced. The display will show the actual appliance temperature, o97 setting.

When appliance cleaning is activated, a cleaning alarm is transmitted to the normal alarm recipient. A later processing of these alarms will document that the appliance has been cleaned as often as planned.

There are no temperature alarms during appliance cleaning.

Table 5: Appliance cleaning function

Appliance shutdown

The function closes the AKV valve and all outputs are switched o. The cooling appliance is stopped like the “Main switch”, but this happens without an “A45 standby alarm”. The function can be enabled by a switch on the DI input or via a setting through data communication.

Defrost

Depending on the application, you may choose between the following defrost methods:

• Natural: Here the fans are kept operating during the defrost

• Electric: The heating element is activated

• Hot gas: Simple hot gas defrost can be selected in application modes where a compressor is controlled. The compressor unit will operate during defrosting

• Brine defrost: The brine valve is forced open while defrosting (only possible when selecting modulating control in TXV applications)

AK-CC55 Compact

Start of defrost

A defrost can be started in dierent ways:

Interval:

Defrost is started at xed time intervals like e.g. every eighth hour. An interval must ALWAYS be set to a "higher" value than the period set between two defrostings when a schedule or network signal is used.

Week schedule:

Here defrost can be started at xed times of the day and night. However, max. 6 defrosts per day.

Contact:

Defrost is started with a contact signal on a digital input.

Figure 12: Defrost start

Network:

The defrost start signal is received from a system manager via data communication.

Max. thermostat runtime:

When the aggregate time has passed a preset value, a defrost will be initiated.

Manual:

An extra defrost can be activated from the defrost button on the AK-UI55 Set display via the app, or via the parameter setting. All the mentioned methods can be used in parallel – if just one of them is activated, a defrost will be started.

Stop of defrost

Defrosting can be stopped by either:

• Time

• Temperature (with time as safety)

Compressor run during hot gas defrost

If the defrosting method is set to “Gas,” the compressor will be “On” during the defrost cycle. (Only for application situations that include a compressor output).

Fans

The fans can be stopped or operated during defrosting. They can also run and then be stopped at a set temperature. The temperature signal is obtained from the defrost stop sensor.

Defrost sequence

1.

Pump down

2.

Defrost

3.

Waiting position after defrost

4.

Drip o

5.

Delay of fan

Real-time clock

The controller has a built-in real-time clock which can be used to start defrosts. This clock has a power reserve of four days.

System manager

Max 10.

Danfoss

84B8268

AK-CC55 Compact

If the controller is equipped with data communication, the clock will automatically be updated from a Danfoss system manager.

Coordinated defrost

There are two ways in which coordinated defrost can be arranged.

Figure 13: Coordinated defrost options

Either with wire connections between the controllers or via data communication:

Wire connections

The digital input DI2 must be congured for coordinated defrost and wiring must be connected between the relevant controllers. When one controller starts a defrost, all the other controllers will follow suit and likewise start a defrost. After the defrost, the individual controllers will move into waiting position. When all are in waiting position there will be a change-over to refrigeration.

Coordination via data communication

Here the system manager handles the coordination. The controllers are gathered in defrosting groups and the system manager ensures that defrosting is started in the group according to a weekly schedule.

When a controller has completed defrosting, it sends a message to the system manager and then goes into a waiting position. When every controller in the group is in a waiting position, refrigeration is again permitted in all the individual controllers.

Melt function

This function will prevent the air ow in the evaporator from being reduced by frost created by uninterrupted operation for a long time.

The function is activated if the thermostat temperature has remained in the range between -5 °C and +10 °C for a longer period than the set melting interval. The refrigeration will then be stopped during the set melting period. The frost will be melted so that the air ow and hence the evaporator’s capacity will be greatly improved.

Control of two compressors (only with custom set-up)

Two compressor steps can be controlled cyclic or sequentially. At cyclic control, two compressors must be of the same size, while in sequential control compressor step 1 can be larger than step 2.

AK-CC55 Compact

Figure 14: Control of two compressors.

Cyclic control

When the controller demands refrigeration, it will rst cut in the compressor with the shortest operating time. After the time delay, the second compressor will be cut in.

When the temperature has dropped to ”the middle of the dierential”, the compressor with the longest operation time will be cut out.

The running compressor will continue until the temperature has reached the cut-out value. Then it will cut out. When the temperature again reaches the middle of the dierential, a compressor will again be started.

If one compressor cannot maintain the temperature within the dierential, the second compressor will also be started.

If one of the compressors has run on its own for two hours, the compressors will be changed over so that operational time is balanced.

The two compressors must be of a type that can start up against a high pressure.

The compressor's settings for ”Min. On time” and ”Min. O time” will always have top priority during normal regulation. But if one of the override functions is activated, like e.g. defrost, door open function, case shutdown, forced closing, the ”Min. On time” will be disregarded.

Sequential control

Compressor steps are controlled in the same manner as described for cyclic control, but compressor step 1 will always be started rst and cut out as the last one. No time equalization is available in sequential control mode.

Rail heat

It is possible to pulse-control the power to the rail heat in order to save energy. Pulse control can either be controlled according to day/night load or dewpoint.

Relay or analogue output

A relay output can be used when long cycle times are permitted. If fast pulsing is required, the AO1/PWM output can be used. The output must be connected to an external power solid state relay. The cycle time must be congured for the relay output in o43 or for analogue output in P82.

Pulse control according to day and night

Various ON periods can be set for day and night operation. A cycle time is set as well as the percentage part of the period in which the rail heat is ON.

AK-CC55 Compact

Figure 15: Rail heat control, day/night load.

Pulse control according to dewpoint

In order to use this function, a system manager of the type AK-SM is required which can measure ambient temperature and humidity to calculate dewpoint and distribute to the appliance controllers. For this the rail heat’s ON period is controlled according to the distributed dewpoint.

Two dewpoint values are set in the appliance control:

• One where the eect must be max. i.e. 100%. (o87)

• One where the eect must be min. (o86)

At a dewpoint which is equal to or lower than the value in 086, the eect will be the value indicated in o88. In the area between the two dewpoint values, the controller will manage the power to be supplied to the rail heat.

Figure 16: Rail heat control, dewpoint

During defrosting

During defrosting rail heat will be active, as selected in setting d27.

Fan

Pulse control

To obtain energy savings, it is possible to pulse control the power supply to the evaporator fans. Pulse control can be accomplished in one of the following ways:

• during the thermostat’s cut-out period (cold room)

• during night operation and during the thermostat’s cut-out period (appliance with night blinds) (The function is not actual when r14=2, i.e. modulating regulation).

A period of time is set as well as the percentage of this period of time where the fans have to be operating.

AK-CC55 Compact

Figure 17: Fan cycle time

Cut-out of fans during plant breakdowns

If the refrigeration in a breakdown situation stops, the temperature in the cold room may rise quickly as a result of the emission of heat from large fans. In order to prevent this situation, the controller can stop the fans if the temperature at S5 exceeds a set limit value. The fans will start running again when the S5 temperature has dropped 2K below the set limit. (The function can also be used as a type of MOP function. Here the load on the compressors is limited until the S5 temperature has fallen below the congured value).

ECO operations (only with custom set-up)

Reduced fan speed is permitted when the night blind is down. (Fan with changeover between high and low speed). ECO operation is not permitted if the heat function is activated.

Light function

The function can be used for controlling the light in a refrigeration appliance or in a cold room. It can also be used for controlling a motorised night blind.

The light function can be dened in several ways:

• The light is controlled via a signal from a door contact. The light is kept on for a set time after the door has been closed.

• The light is controlled via the day/night function

• The light is controlled via a DI input

• The light is controlled via the data communication from a system manager. Here there are two operational options if data communication should fail:

◦ The light can go ON ◦ The light can stay in its current mode

The light load must be connected to the NC terminals on the relay. This ensures that the light remains ON in the appliance if power to the controller should fail.

A setting denes how light is controlled when regulation is stopped via r12 Main switch = OFF (see o98). The light is switched o when the appliance cleaning function is activated.

Night blind

Motorised night blinds can be controlled automatically from the controller. The night blinds will follow the status of the light function. When the light is switched on, the night blinds open, and when the light is switched o, the night blinds close again. When the night blinds are closed, it is possible to open them using a switch signal on the digital input. If this pulse signal is activated, the night blinds will open and the refrigeration appliance can be lled with new products. If the pulse signal is activated again, the blinds close.

When the night blind function is used, the thermostat function can control with dierent weighting between the S3 and S4 sensors. A weighting during day operation and another when the blind is closed.

A night blind is opened when the appliance cleaning function is activated.

A setting can dene that the night blind is opened when "r12" (Main switch) is set to o (see o98).

When the night blind rolls down, the fan will be stopped for the set time. The night blind can thereby roll down to the correct position.

Danfoss

84B8269

A

r01

t

º C

r62

B

C

ABC

Refrigeration

Neutral zone

Heat

Function

Input / Settings menu

Setting

DI1

DI2

o02

o37

None++

0

DI Status++

1

Door function++

2

Door alarm++

3

Defrost start++

4

Main switch++

5

Night setback++

6

Thermostat band++

7

Alarm at closed++

8

Alarm at open++

9

Case cleaning++

10

Forced cooling++

11

Open blinds++

12

Coordinated defrost

+

13

Forced closing++

14

Shutdown++

15

Light control++

16

Leak detection++

20

Adaptive liquid control

++21

AK-CC55 Compact

Heating function (only with custom set-up)

The heating function is used to prevent the temperature from becoming too low, e.g. in a cold room, etc. The limit for when the heating function cuts o is set as an oset value below the current cut-out limit for the refrigeration thermostat. This ensures that refrigeration and heating do not occur simultaneously. The dierence for the heating thermostat has the same value as for the refrigeration thermostat. To prevent that the heating thermostat cuts in during short-term drops in air temperature, a time delay can be set for when to change from refrigeration to heating.

Figure 18: Heating function

Digital inputs

There are two digital inputs, DI1 and DI2, with dry contact function, and one digital input DI3 with high voltage signal.

They can be used for the following functions:

Table 6: Function table and DI settings

Example: If DI1 is to be used to start a defrost, o02 must be set to 4.

Danfoss

84B8235

Master control function

Description

MC Ther. toggle

Master control signal used for switching case load ON/OFF depending on the load condition

MC Load request

Master control signal used to control the load balance between multiple case controllers on the same suction line

MC Max. Te

oset

Requested

oset to actual evaporating temperature in order to keep the air temperature at the actual setpoint

MC Liquid control

Master control signal allowing switch to adaptive liquid control

AK-CC55 Compact

Forced closing

The AKV valves can be closed with an external signal ("Forced closing").

The function must be used in connection with the compressor’s safety circuit, so that there will be no injection of liquid into the evaporator when the compressor is stopped by the safety controls and cannot start again (however not at low pressure – LP).

Via a setting (see o90 Fan at forced closing) it is possible to dene whether the fan should be ON or OFF during forced closing and whether an ongoing defrost is suppressed (i.e. put in standby position for a period of upto 10 minutes before it is cancelled) - this feature can be used in CO2 systems to eliminate excessive heating while compressors cannot run.

The signal can be received from the DI-input or via the data communication.

Door contact

The door contact function can via the digital inputs be dened for two dierent applications:

Alarm monitoring:

The controller monitors the door contact and delivers an alarm message if the door has been opened for a longer period than the set alarm delay.

Alarm monitoring and stop of refrigeration:

When the door is opened, the refrigeration is stopped, i.e. the injection, the compressor and the fan are stopped and light switches on. If the door remains open for a longer time than the set restart time, refrigeration will be resumed. This will ensure that refrigeration is maintained even if the door is left open or if the door contact should be defective. If the door remains open for a longer period than the set alarm delay, an alarm will also be triggered.

Display

The controller has one plug for an external display. One of the following display types can be connected:

• AK-UI55 Info (temperature display).

• AK-UI55 Set (temperature display and operation).

• AK-UI55 Bluetooth (temperature display and app interface).

The connection between the display and the controller must be made using an AK-UI55 cable.

The distance between the controller and the display must not exceed 100 m.

Figure 19: Controller with one display

Override

The controller contains a number of override functions which can be used together with Master Control functions in the Danfoss gateway/system manager:

Table 7: Override functionality

Master control function

Description

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 shutdown 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

MC Defrost start

Master control signal for starting a defrost. At adaptive defrost the defrost might be skipped if the defrost is not needed

MC Defrost state

Read out the actual state of the defrost

MC Hold after defrost

Master control signal used for co-ordinated defrost control to hold cabinets from returning to normal refrigeration after a defrost until all cabinets have terminated defrost

MC Stop defrost

Master control signal used to prevent a defrost start in a controller.

MC Light signal

Master control signal for control of light via a data communication signal from the system manager

MC Actual dewpoint

Master control signal sending the actual measured dewpoint from the system manager to the controller over the network.

MC Po load factor

Calculated load factor for the refrigerated appliance. Used for suction pressure optimization.

MC Bluetooth lock

Master control signal that will lock down all Bluetooth data communication

MC Min. delta T

Required minimum delta temperature across evaporator (S3 - Te) in order to keep the air temperature at the actual setpoint

AK-CC55 Compact

Danfoss

84B8281

S₄

S₃

S₅

S₂

S₃

S₅

S₄

40

41

42

5V

s

A1

43

44

AI2

45

46

AI3

47

48

AI4

49

50

AI5

60

61

DI2

DI1

70

71 AO1 PWM

83

84

85

B

A

MODBUS

115 - 230V AC

L

N

1

2

3

8

9

7

10

11

12

DO2

13

14

DO3

16

15

17

DO4

Danfoss

84B3236

DO1

AK-CC55 Compact

Applications

The chapter outlines application examples:

• Standard display case

• Cold rooms

An application setting will congure inputs and outputs so that the controller’s operation interface is reecting the selected application.

In application 4 and 9, users can custom dene the functions of relay 2, 3 and 4, e.g.:

• Controlling two compressors

• Controlling the night blind

• Controlling the heat function

• ECO operations of fans

Figure 20: Standard display case, upright or normal, with one evaporator

Figure 21: Cold room conguration with door, light and heat control function

AK-CC55 Compact connections and application options

Figure 22: Electrical connections AK-CC55 Compact

AK-CC55 Compact is optimised for control of one evaporator plus dierent combinations of light, rail heat and alarm relays.

No.

Application description

DO1

DO2

DO3

DO4

AO1

AI1

AI2

AI3

AI4

AI5/ DI1

DI2

1

TXV appl.S3S4S52

TXV appl.S3S4S53

TXV appl.S3S4S54

TXV appl./ User def. cong.

User def.

User def.S3S4S55

EEV appl.PeS2S3S4S56

EEV appl.PeS2S3S4S57

EEV appl.PeS2S3S4S58

EEV appl.PeS2S3S4S59

EEV appl./ User def. cong.

User def.

User def.PeS2S3S4

S5

Pe

Evaporating pressure

S2

Gas outlet of evaporator

S3

Return air temperature

S4

Discharge air temperature

S5

Evaporator temperature

AK-CC55 Compact

It has 4 Digital Outputs (DO), known as DO1 – DO4, one Analogue Output (AO), known as AO1, 4 Analogue Inputs (AI), known as AI1 – AI4, an input that can be used as either an AI5 or as a DI (Digital Input) DI1, and one Digital Input (DI2).

It has 9 dierent application options (Application 1 – Application 9) to control the functions of the input and output relays.

Table 8: Application with digital and analogue in/output specication

= Optional use

Table 9: Sensor description

Application set-ups and IO connections

AK-CC55 Compact is designed for control of one evaporator + dierent combinations of light, rail heat and alarm relays.

The most important variations are:

Applications 1-4: TEV applications

Control of compressor or solenoid valve, alarm relay, lights, rail heat Application 4: Congurable outputs, e.g.: Dual compressor operation, heat function, night blind, ECO fan

Applications 5-9: EEV applications

Control of AKV valve, compressor, alarm relay, light, rail heat. 9: Congurable outputs, e.g.: Dual compressor operation, heat function, night blind, ECO fan

115 – 230 V AC

Comp. Alarm Fan Defrost

1 2 3 7 8 9 10 11 12 13 14 15 16 17

L N

40

0 – 10 V/

PWM

S3 S4 S5

AI5 DI1

1

41 42 43 44 45 46 47 48 49 50 83 84

B-A

+

MODBUS

85

DI2 AO1

60 61 70 71

Danfoss

84B3257

115 – 230 V AC

Comp. Light Fan Defrost

1 2 3 7 8 9 10 11 12 13 14 15 16 17

L N

40

0 – 10 V/

PWM

S3 S4 S5

AI5 DI1

2

41 42 43 44 45 46 47 48 49 50 83 84

B-A

+

MODBUS

85

DI2 AO1

60 61 70 71

Danfoss

84B3258

115 – 230 V AC

Comp. Railheat Fan Defrost

1 2 3 7 8 9 10 11 12 13 14 15 16 17

L N

40

0 – 10 V/

PWM

S3 S4 S5

AI5 DI1

3

41 42 43 44 45 46 47 48 49 50 83 84

B-A

+

MODBUS

85

DI2 AO1

60 61 70 71

Danfoss

84B3259

AK-CC55 Compact

Figure 23: Connections for application 1

Figure 24: Connections for application 2

Figure 25: Connections for application 3

115 – 230 V AC

Comp. DO2 DO3

Custom set-up

DO4

1 2 3 7 8 9 10 11 12 13 14 15 16 17

L N

40

0 – 10 V/

PWM

S3 S4 S5

AI5 DI1

4

41 42 43 44 45 46 47 48 49 50 83 84

B-A

+

MODBUS

85

DI2 AO1

60 61 70 71

Danfoss

84B3260

115 – 230 V AC

AKV Comp. Fan Defrost

1 2 3 7 8 9 10 11 12 13 14 15 16 17

L N

40

0 – 10 V/

PWM

S2Pe

5V s

S3 S4

AI5

S5

5

41 42 43 44 45 46 47 48 49 50 83 84

B-A

+

MODBUS

85

DI2 AO1

60 61 70 71

P

1 3 2

Danfoss

84B3261

115 – 230 V AC

AKV Fan Defrost

1 2 3 7 8 9 10 11 12 13 14 15 16 17

L N

40

0 – 10 V/

PWM

S2Pe

5V s

S3 S4

AI5

S5

6

41 42 43 44 45 46 47 48 49 50 83 84

B-A

+

MODBUS

85

DI2 AO1

60 61 70 71

P

1 3 2

Alarm

Danfoss

84B3262

AK-CC55 Compact

Figure 26: Connections for application 4

Figure 27: Connections for application 5

Figure 28: Connections for application 6

115 – 230 V AC

AKV Fan Defrost

1 2 3 7 8 9 10 11 12 13 14 15 16 17

L N

40

0 – 10 V/

PWM

S2Pe

5V s

S3 S4

AI5

S5

7

41 42 43 44 45 46 47 48 49 50 83 84

B-A

+

MODBUS

85

DI2 AO1

60 61 70 71

P

1 3 2

Light

Danfoss

84B3263

115 – 230 V AC

AKV Fan Defrost

1 2 3 7 8 9 10 11 12 13 14 15 16 17

L N

40

0 – 10 V/

PWM

S2Pe

5V s

S3 S4

AI5

S5

8

41 42 43 44 45 46 47 48 49 50 83 84

B-A

+

MODBUS

85

DI2 AO1

60 61 70 71

P

1 3 2

Railheat

Danfoss

84B3264

115 – 230 V AC

AKV

1 2 3 7 8 9 10 11 12 13 14 15 16 17

L N

40

0 – 10 V/

PWM

S2Pe

5V s

S3 S4

AI5

S5

9

41 42 43 44 45 46 47 48 49 50 83 84

B-A

+

MODBUS

85

DI2 AO1

60 61 70 71

P

1 3 2

DO2 DO3

Custom set-up

DO4

10 11 12 13 14 15 16 17

Danfoss

84B3265

AK-CC55 Compact

Figure 29: Connections for application 7

Figure 30: Connections for application 8

Figure 31: Connections for application 9

Product identication

The controller is provided with labels from the factory, indicating a generic application. When selecting the required application, specic labels are provided so that you can mount the relevant one.

The application number is indicated on the left-hand side of the labels. Use the label tting the selected application.

Danfoss

84B8266

230 V AC (115 AC)

AK-CC55 Compact

Some of the labels are applicable to multiple application options.

Figure 32: Labels used to indicate application number

AK-CC55 Compact connections

Data communication

Figure 33: Data communication



IMPORTANT:

It is important that the installation of the data communication cable is performed correctly with sucient distance to high voltage cables.

AKV info

Figure 34: AKV info

230 V or 115 V AC coil Max. 0.5 A

A

AKS 32R

B

out

C

ABC

Black

Brown

Blue

AO1/ PWM

60 61 70 71

SSR

Danfoss

80G8234

AK-CC55 Compact

External solid state relay for rail heat

Figure 35: External solid state relay for rail heat

0 / 10 V Pulse Width Modulated (PWM) Max. 15 mA.

AKS 32R info

Figure 36: AKS 32R info

 NOTE:

A ratiometric pressure transmitter with a 5 V, 10 – 90% voltage output signal must be used.

The signal from one pressure transmitter can be received by up to 10 controllers. There must not be a signicant pressure drop from the pressure transmitter's position in the suction line to the individual evaporators.

Coordinated defrost via cable connections

Figure 37: Coordinated defrost via cable connections

Max. 10 The following controllers can be connected in this way: EKC 204A, AK-CC 210, AK-CC 250, AK-CC 450, AK-CC 550 and AK-CC55.

Danfoss

84B8235

AK-CC55 Compact

Refrigeration is resumed at the same time when all controllers have terminated defrost.

External display AK-UI55

Figure 38: External display AK-UI55

(Total length: max. 100 m)

Connections

AI1 Pressure transmitter

AKS 32R Connect to terminal 40, 41 and 42. (Use cable 060G1034: Black=40, Brown=41, Blue=42)

The signal from one pressure transmitter can be received by up to 10 controllers. But only if there are no signicant pressure drops between the evaporators to be controlled. See Figure 36: AKS 32R info.

AI2 - AI5 Primarily for temperature inputs

• S2 Pt 1000 ohm sensor AKS11, placed at the evaporator outlet

• S3, S4, S5 Pt 1000 AKS11, PTC 1000 EKS111, NTC5K EKS211 or NTC10K EKS221 sensor. All have to be of the same type.

• S3, air sensor, placed in the warm air before the evaporator

• S4, discharge air sensor, placed in the cold air after the evaporator (the need for either S3 or S4 can be selected in the conguration)

• S5, defrost sensor, placed in the evaporator

(If the DI1 input is used for a temperature measurement, it will appear as AI5.))

DI1 Digital input signal

The dened function is active when the input is short-circuited or opened, depending on the function dened in o02.

DI2 Digital input signal.

The dened function is active when the input is short-circuited or opened, depending on the function dened in o37.

AO1 Analogue output signal

• Analogue 0 – 10 V (currently not used)

• Pulse width modulated signal Can be used for fast pulse control of rail heat via an external power solid state relay.

MODBUS

For data communication.

• Terminal 83 = B-

• Terminal 84 = A+

• Terminal 85 = screen

AK-CC55 Compact

Supply voltage

• 230 V AC or 115 V AC

DO1

• AKV valve Connection of expansion valve type AKV, AKVA, AKVH or AKVP. The coil must be a 230 V or 115 V AC coil

• Compressor Connection of a relay. The coil must be a 230 V or 115 V AC coil. Max. 0.5 A.

• Solenoid valve The coil must be a 230 V or 115 V AC coil. Max. 0.5 A.

DO2

• Alarm There is a connection between terminal 10 and 12 in alarm situations and when the controller is without power. DO2 has reinforced insulation that can be used with 24 V.

• Light, Rail heat, Compressor/Liquid line valve There is connection between terminal 10 and 11 (10 and 12 at light) when the function is ON.

DO3

• Fan There is connection between terminal 13 and 14 when the fan is ON.

DO4

• Defrost There is connection between terminal 15 and 16 when defrosting takes place.

DO2-DO4 + AO1 and Application 4 / 9

Here, the dierent outputs can be custom dened in q02-q09

Display (RJ12 plug)

If readings/operation of the controller is required, an external display can be connected. The max. cable length is 100 m.

Electric noise

Cables for sensors, low voltage 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 low voltage 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 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 t 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.

AK-CC55 Compact

Operation

The controller can be operated in dierent ways depending on the user interface.

The following options are available:

• Via data commmunication

• Via AK-UI55 Setting display

• Via AK-UI55 Bluetooth display

Operation via data communication

Via system manager's display

All AK-CC55 controllers can be operated from a central location, e.g. AK-SM 800. Data communication is to take place via MODBUS.

Via system manager and service tool

Operation can also be performed from a central location with PC software "Service Tool" connected to a system manager AK-SM 720 via MODBUS.

Programming via KoolProg

Programming by use of PC software type KoolProg® via interface MMIMYK connected to RJ12 display connector.

Direct operation

Operation via AK-UI55 setting display The display can be located at a distance of up to 100 meters from the controller.

Smart phone and app via AK-UI55 Bluetooth display

The "AK-CC55 connect" app is used for smart phone operation. AK-CC55 connect can be downloaded freely to a compatible iOS/Android smartphone device. Menu operation is established by activating Bluetooth communication to the app.

Operation via AK-UI55 Set

Display AK-UI55 Set

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.

The keyboard can be locked and unlocked by pressing arrow up and down at the same time if the parameter P89 has enabled this feature.

Lights in event of alarm — press on alarm button — alarm relay is reset — alarm code displayed — e.g. “A1”

Lights up in event of: Energy optimization Cooling Defrosting Fan operation

Up arrow / Down arrow / Arrow to left: Navigation in the menu and setting of values.

Long press (3 seconds) will start a defrost, “-d-” is shown in the display. Ongoing defrosting can be stopped by a long press.

Long press (3 seconds) gives access to the information menu “InF”

SET:

Long press (3 seconds) gives access to the “SEt” menu. If the operation is locked with a password, “PS” is shown. Enter the code.

Shows the setting for a chosen parameter / saves a changed setting. Short press gives access to entering of the thermostat’s cut-out limit.

Danfoss

84B8265

Display readout

Denomination

-d-

Defrost is in progress

Err

The temperature cannot be displayed due to a sensor error

Er1

The display cannot load data from the controller. Disconnect and then reconnect the display

Er2

Lost display communication

ALA

The alarm button is activated. The rst alarm code is then shown

- - -

At top position of the menu or when max. value has been reached, the three dashes are shown in the top of the display

- - -

At bottom position of menu or when min. value has been reached, the three dashes are shown in the bottom of the display

Loc

The menu operation is locked. Unlock by pressing (for 3 seconds) on the ‘up arrow’ and ‘down arrow’ simultaneously

UnL

The menu operation is unlocked

- - -

The parameter has reached min. or max. limit

PS

A password is required for access to the menu

Fan

Appliance cleaning has been initiated. The fans are running

OFF

Appliance cleaning is activated and the appliance can now be cleaned

OFF

The main switch is set to O

SEr

The main switch is set to service / manual operation

CO2

Flashes: Will display in event of a refrigerant leakage alarm, but only if the refrigerant is set up for CO

2

AK-CC55 Compact

Figure 39: Operating via AK-UI55 Set

Table 10: Messages provided by the display

Factory setting

If you need to return to the factory-set values, do the following:

• Cut o the supply voltage to the controller

• Keep up "∧" and down "∨" arrow buttons depressed at the same time as you reconnect the supply voltage

• When FAc is shown in the display, select "yes"



NOTE:

The OEM factory setting will either be the Danfoss factory settings or a user dened factory setting if one has been made.

The user can save his setting as OEM factory setting via parameter o67.

SET

Set

(PS)

<

cFg SET r12 Main switch

<

o61 Application

r--

Menu groups

Parameter groups when operating via display

Figure 40: SET button parameter list

Figure 41: Info button parameter list

Get a good start

With the following procedure you can start regulation very quickly:

1.

2.

3.

4.

5.

6.

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 application based on the wiring diagrams on page Page 22 Open parameter o61 and set the application number For network. Set the address in o03 Then select a set of presets from the "Food type" help table Open parameter r89 and set the number for the array of presettings. The few selected settings will now be transferred to the menu

Setting of presettings (r89). After setting 1-5, setting is returned to 0.

12345

Food type

Vegetables

Milk

Meat/sh

Frozen food

Ice cream

Temperature (r00)

8 °C

0 °C

-2 °C

-20 °C

-24 °C

Max. temp. setting (r02)

10 °C

4 °C

2 °C

-16 °C

-20 °C

Min. temp. setting (r03)

4 °C

-4 °C

-6 °C

-24 °C

-28 °C

Upper alarm limit (A13)

14 °C

8 °C

-15 °C

Lower alarm limit (A14)

0 °C

-5 °C

-30 °C

Upper alarm limit for S6 (A22)

14 °C

8 °C

-15 °C

Lower alarm limit for S6 (A23)

0 °C

-5 °C

-30 °C

AK-CC55 Compact

7.

Set the desired cut-out temperature r00

8.

Select refrigerant via parameter o30 (only application 5-9)

9.

Set the pressure transmitter min. and max. range via parameter o20 and o21 (only application 5-9)

10.

Set the desired defrost method in d01

11.

Set the interval time between defrost starts in d03

12.

Set the desired defrost sensor in d10

13.

Set the maximum defrost time in d04

14.

Set the defrost stop temperature in d02

15.

Open parameter r12 and start the regulation

16.

Go through the parameter list and change the factory values where needed

17.

Get the controller up and running on network:

◦ MODBUS: Activate scan function in system unit

Table 11: Food type settings

R-W

RW*

If the operation is protected by one or more passwords, reading and setting the parameter will be limited to:

R or W

This setting can be seen with password no. _ or higher (3 is the highest level).

This setting can be performed with password no. _ or higher (3 is the highest level).

The asterisk indicates in which application from 1-9 the parameter is applicable

Function

Values

R-W

Code123456789Min. value

Max. value

Fact. value

Cutout 1

0-0

r00*********r03

r02

2.0 °C

Dierential

1-2

r01*********0.1 °C

20.0 °C

2.0 °C

Max cutout limit

0-2

r02*********r03

50.0 °C

Min cutout limit

0-2

r03*********-50.0 °C

r02

-50.0 °C

Temperature unit

0=Celsius, 1=Fahrenheit

1-2

r05*********010

S4 Air OFF evap. A - Adjustment

1-2

r09*********-10.0 °C

10.0 °C

0.0 °C

S3 Air ON evap. A - Adjustment

1-2

r10*********-10.0 °C

10.0 °C

0.0 °C

Main switch

-1=Manual, 0=Stop, 1=Start

0-2

r12*********-110

Night oset

1-2

r13*********-50.0 °C

50.0 °C

0.0 °C

Thermostat mode

2=Modulating, 1=ON/OFF

1-2

r14*********121

Thermostat sensor S4 %

1-2

r15*********0 %

100 %

100%

Melt interval

1-2

r16*********0 h

10 h

1 h

Melt period

1-2

r17*********0 min

30 min

5 min

Cutout 2

0-2

r21*********-50.0 °C

50.0 °C

2.0 °C

Thermostat sensor S4 % night

1-2

r61*********0 %

100 %

100%

Air heater neutral zone

1-2

r62**

0.0 °C

50.0 °C

5.0 °C

Air heater start delay

1-2

r63**

0 min

240 min

Food type

0=None, 1=Vegetables, 2=Dairy, 3=Meat and sh, 4=Frozen food, 5=Ice cream

1-2

(1)

r89*********050

S4 frost protection

1-2

r98*********-50.0 °C

50.0 °C

-50.0 °C

Function

Values

R-W

Code123456789Min.value

Max.value

Fact.value

Alarm delay A

1-2

A03*********0 min

240 min

30 min

Door open alarm delay

1-2

A04*********0 min

240 min

60 min

Alarm delay pulldown A

1-2

A12*********0 min

240 min

90 min

High alarm limit 1

1-2

A13*********-50.0 °C

50.0 °C

8.0 °C

Low alarm limit 1

1-2

A14*********-50.0 °C

50.0 °C

-30.0 °C

High alarm limit 2

1-2

A20*********-50.0 °C

50.0 °C

8.0 °C

Low alarm limit 2

1-2

A21*********-50.0 °C

50.0 °C

-30.0 °C

Alarm delay DI 1

1-2

A27****

0 min

240 min

30 min

Alarm delay DI 2

1-2

A28*********0 min

240 min

30 min

Alarm sensor S4% A

1-2

A36*********0 %

100 %

100%

AK-CC55 Compact

AK-UI55 display menu (SW ver. 2.0x)

Thermostat

Table 12: Thermostat

(1)

In order to change this parameter the regulation must be stopped via the parameter r12 Main switch = OFF.

Alarm settings

Table 13: Alarm settings

Function

Values

R-W

Code123456789Min.value

Max.value

Fact.value

Min ON time

1-2

c01******

0 min

30 min

0 min

Min OFF time

1-2

c02******

0 min

30 min

0 min

Delay between comp.

1-2

c05**

0 s

999 s

5s

Step control mode

1=Sequential, 2=Cyclic

1-2

c08**12

2

Function

Values

R-W

Code123456789Min.value

Max.value

Fact.value

Defrost method

0=None, 1=Electrical, 2=Hot gas, 3=Brine, 4=Air/

Ocycle

1-3

d01*********041

Defrost stop limit A

1-2

d02*********0.0 °C

50.0 °C

6.0 °C

Defrost start interval

1-2

d03*********0 h

240 h

8h

Max defrost time

1-2

d04*********0 min

360 min

45 min

Time staggering power up

1-2

d05*********0 min

240 min

0 min

Drip o time

1-2

d06*********0 min

60 min

0 min

Fan start delay

1-2

d07*********0 min

60 min

0 min

Fan start temperature

1-2

d08*********-50.0 °C

10.0 °C

-5.0 °C

Fan control during defrost

0=OFF, 1=ON, 2=OFF at drip, 3=OFF at high temp

1-2

d09*********031

Defrost stop method

0=Time, 1=S5 sensor, 2=S4 sensor

1-2

d10*********020

Pump down delay

1-2

d16*********0 min

60 min

0 min

Max thermostat runtime

1-2

d18*********0 h

240 h

0h

Rail heat during defrost

0=OFF, 1=ON, 2=Normal control

1-2

d27*********021

Display delay after defrost

1-2

d40*********5 min

240 min

30 min

Fan stop temperature

1-2

d41*********-20.0 °C

20.0 °C

0.0 °C

Function

Values

R-W

Code123456789Min.value

Max.value

Fact.value

Max superheat limit

1-2

n09*****n10

20.0 °C

12.0 °C

Min superheat limit

1-2

n10*****2.0 °C

n09

3.0 °C

MOP temperature

1-2

n11*****-50.0 °C

15.0 °C

AKV Period time

1-2

(1)

n13*****3 s

6 s

Brine valve - Period time

1-2

n63****

30 s

900 s

300 s

Brine valve max OD

1-2

n64****

n65

100 %

100%

Brine valve min OD

1-2

n65****

0 %

n64

0%

Brine valve windup

1-2

n66****

0.2

1.0

Brine valve Kp

1-2

n67****

0.5

10.0

4.0

Brine valve Tn

1-2

n68****

60 s

1800 s

300 s

Function

Values

R-W

Code123456789Min.value

Max.value

Fact.value

Fan stop high S5 temp.

1-2

F04*********-50.0 °C

50.0 °C

Fan pulsing mode

0=No pulsing, 1=Pulsing cutout, 2=Pulsing cutout night

1-2

F05*********020

Fan period time

1-2

F06*********1 min

30 min

5 min

Fan ON cycle

1-2

F07*********0 %

100 %

100%

AK-CC55 Compact

Compressor

Table 14: Compressor

Defrost

Table 15: Defrost

Injection control

Table 16: Injection control

(1)

In order to change this parameter the regulation must be stopped via the parameter r12 Main switch = OFF.

Fan control

Table 17: Fan control

Function

Values

R-W

Code123456789Min.value

Max.value

Fact.value

Defrost schedule

0=No, 1=Yes

1-2

t00*********010

Def. start 1 - Hours

1-2

t01*********0 h

23 h

0 h

Def. start 1 - Minutes

1-2

t11*********0 min

59 min

0 min

Def. start 2 - Hours

1-2

t02*********0 h

23 h

0 h

Def. start 2 - Minutes

1-2

t12*********0 min

59 min

0 min

Def. start 3 - Hours

1-2

t03*********0 h

23 h

0 h

Def. start 3 - Minutes

1-2

t13*********0 min

59 min

0 min

Def. start 4 - Hours

1-2

t04*********0 h

23 h

0 h

Def. start 4 - Minutes

1-2

t14*********0 min

59 min

0 min

Def. start 5 - Hours

1-2

t05*********0 h

23 h

0 h

Def. start 5 - Minutes

1-2

t15*********0 min

59 min

0 min

Def. start 6 - Hours

1-2

t06*********0 h

23 h

0 h

Def. start 6 - Minutes

1-2

t16*********0 min

59 min

0 min

Time hours

0-1

t07*********0 h

23 h

0 h

Time minutes

0-1

t08*********0 min

59 min

0 min

Time date

0-1

t45*********1311

Time month

0-1

t46*********1121

Time year

0-1

t47*********0

100

0

Monday - Follow schedule

0=No, 1=Yes

1-2

t51*********011

Tuesday - Follow schedule

0=No, 1=Yes

1-2

t52*********011

Wednesday - Follow schedule

0=No, 1=Yes

1-2

t53*********011

Thursday - Follow schedule

0=No, 1=Yes

1-2

t54*********011

Friday - Follow schedule

0=No, 1=Yes

1-2

t55*********011

Saturday - Follow schedule

0=No, 1=Yes

1-2

t56*********011

Sunday - Follow schedule

0=No, 1=Yes

1-2

t57*********011

Function

Values

R-W

Code123456789Min. value

Max. value

Fact. value

Delay of outputs at power up

1-2

o01*********0 s

600 s

5s

DI1

Conguration

0=None, 1=DI status, 2=Door function, 3=Door alarm, 4=Defrost start, 5=Main switch, 6=Night setback, 7=Thermostat band, 8=Alarm at closed, 9=Alarm at open, 10=Case cleaning, 11=Forced cooling, 12=Open blinds, 13=Coordinated defrost, 14=Forced closing, 15=Shutdown, 16=Light control, 20=Leak detection, 21=Adaptive liquid control

1-2

(1)

o02****021

0

Network address

1-3

(1)

o03*********0

240

0

Access code 3

3-3

o05*********0

999

0

Temperature sensor type

0=Pt 1000, 1=PTC 1000, 2=NTC 5k, 3=NTC 10k

1-3

(1)

o06*********030

Max hold time

1-2

o16*********0 min

360 min

20 min

Display air S4%

1-2

o17*********0 %

100 %

100%

Pe Min range

1-3

(1)

o20*****-1.0 Bar

5.0 Bar

-1.0Bar

Pe Max range

1-3

(1)

o21*****6.0 Bar

200.0 Bar

12.0Bar

AK-CC55 Compact

Defrost schedule

Table 18: Defrost schedule

Miscellaneous

Table 19: Miscellaneous

Function

Values

R-W

Code123456789Min. value

Max. value

Fact. value

Refrigerant

0=Not seleted, 6=R13, 7=R13b1, 2=R22, 8=R23, 14=R32, 11=R114, 3=R134a, 12=R142b, 24=R170, 15=R227, 25=R290, 16=R401A, 18=R402A, 19=R404A, 21=R407A, 22=R407B, 20=R407C, 37=R407F, 49=R407H, 23=R410A, 32=R413A, 30=R417A, 31=R422A, 33=R422D, 34=R427A, 35=R438A, 40=R448A, 41=R449A, 48=R449B, 43=R450A, 44=R452B, 45=R454B, 9=R500, 4=R502, 10=R503, 17=R507, 36=R513A, 26=R600, 27=R600a, 5=R717, 28=R744, 46=R1233zdE, 38=R1234ze, 39=R1234yf, 47=R1234zeZ, 29=R1270, 42=R452A, 1=User de-

ned display, 13=User de- ned

1-3

(1)

o30*****0490

DI2 Conguration

0=None, 1=DI status, 2=Door function, 3=Door alarm, 4=Defrost start, 5=Main switch, 6=Night setback, 7=Thermostat band, 8=Alarm at closed, 9=Alarm at open, 10=Case cleaning, 11=Forced cooling, 12=Open blinds, 13=Coordinated defrost, 14=Forced closing, 15=Shutdown, 16=Light control, 20=Leak detection, 21=Adaptive liquid control

1-2

(1)

o37*********0210

Light control mode

1=Day and night, 2=Network, 3=Door switch, 4=Network (Fallback), 5=Digital input

1-2

o38****15

1

MC Light signal

0=OFF, 1=ON

1-2

o39****010Rail heat ON cycle day

1-2

o41*********0 %

100 %

100%

Rail heat ON cycle night

1-2

o42*********0 %

100 %

100%

Rail heat period time

1-2

o43****

6 min

60 min

6min

Case cleaning mode

0=OFF, 1=Fans run, 2=Cleaning

0-1

o46*********020

Application mode

1=1. Comp/Alarm/Fan/ Defrost, 2=2. Comp/ Light/Fan/Defrost, 3=3. Comp/Railheat/Fan/ Defrost, 4=4. Comp/ Custom, 5=5. EEV/ Comp/Fan/Defrost, 6=6. EEV/Alarm/Fan/Defrost, 7=7. EEV/Light/Fan/ Defrost, 8=8. EEV/ Rail/Fan/Defrost, 9=9. EEV/Custom

1-3

(1)

o61*********195

Access code 2

2-2

o64*********0

999

0

Make new factory

0=OFF, 1=ON

3-3

(1)

o67*********010

Rail heat control mode

0=ON, 1=Day/Night timer, 2=Dew point ctrl.

1-2

o85*********020

Dewpoint min limit

1-2

o86*********-10.0 °C

o87

8.0 °C

Dewpoint max limit

1-2

o87*********o86

50.0 °C

17.0 °C

Rail heat min ON cycle

1-2

o88*********0 %

100 %

30%

Door restart inj. delay

1-2

o89*********0 min

240 min

30 min

Fan at forced closing

0=OFF, 1=ON, 2=OFF and suppress defrost, 3=ON and suppress defrost

1-2

o90*********031

Light at Main switch OFF

0=OFF, 1=Normal ctrl.

1-2

o98****01

0

AK-CC55 Compact

Function

Values

R-W

Code123456789Min. value

Max. value

Fact. value

Alarm relay priority

0=Not used, 1=High Priority, 2=Medium priority, 3=All

1-2

P41****03

2

Blinds max open time

1-2

P60**

0 min

60 min

5 min

Fan stop at blinds closing

1-2

P65****

0 s

300 s

0 s

Rail heat PWM - Period time

1-2

P82*********4 s

60 s

10 s

Refrigerant factor K1

1-3

(1)

P83*****-999

999

300

Refrigerant factor K2

1-3

(1)

P84*****-999

999

300

Refrigerant factor K3

1-3

(1)

P85*****-999

999

300

Max superheat liquid ctrl.

1-2

P86*****P87

20.0 °C

3.0 °C

Min superheat liquid ctrl

1-2

P87*****0.0 °C

P86

1.0 °C

Access code 1

1-1

P88*********0

999

0

Display lock

0=OFF, 1=ON

1-2

P89*********010

Function

Values

R-W

Code123456789Min. value

Max. value

Fact. value

DO2

Conguration

0=None, 1=Fans, 2=Fan ECO, 3=Defrost, 4=Rail heat, 5=Alarm, 6=Light, 7=Blinds, 8=Compressor/ LLSV, 9=Compressor 2, 10=Air heater

1-3

(1)

q02**010

6

DO3

Conguration

0=None, 1=Fans, 2=Fan ECO, 3=Defrost, 4=Rail heat, 5=Alarm, 6=Light, 7=Blinds, 8=Compressor/ LLSV, 9=Compressor 2, 10=Air heater

1-3

(1)

q03**010

8

DO4

Conguration

0=None, 1=Fans, 2=Fan ECO, 3=Defrost, 4=Rail heat, 5=Alarm, 6=Light, 7=Blinds, 8=Compressor/ LLSV, 9=Compressor 2, 10=Air heater

1-3

(1)

q04**010

9

AO1

Conguration

0=None, 1=Rail heat PWM

1-3

(1)

q09*********010

EEV override A

1-2

(2)

q11*****0 %

100 %

0%

Compressor 1 - override

0=MAN OFF, 1=MAN ON

1-2

(2)

q12******010Fan - override

0=MAN OFF, 1=MAN ON

1-2

(2)

q13*********010

Defrost A - override

0=MAN OFF, 1=MAN ON

1-2

(2)

q14*********010

Rail heat - override

0=MAN OFF, 1=MAN ON

1-2

(2)

q15****010Alarm relay - override

0=MAN OFF, 1=MAN ON

1-2

(2)

q16****010Light - override

0=MAN OFF, 1=MAN ON

1-2

(2)

q17****010Compressor 2 - override

0=MAN OFF, 1=MAN ON

1-2

(2)

q19**010Blinds - override

0=MAN OFF, 1=MAN ON

1-2

(2)

q21**010Air heater - override

0=MAN OFF, 1=MAN ON

1-2

(2)

q23**010Fan ECO - override

0=MAN OFF, 1=MAN ON

1-2

(2)

q24**010Rail heat PWM - override

1-2

(2)

q27*********0 %

100 %

0%

High temperature - Priority

0=Disabled, 3=Low, 2=Medium, 1=High

1-2

q28*********031

Low temperature - Priority

0=Disabled, 3=Low, 2=Medium, 1=High

1-2

q29*********031

Sensor errors - Priority

0=Disabled, 3=Low, 2=Medium, 1=High

1-2

q30*********031

AK-CC55 Compact

(1)

In order to change this parameter the regulation must be stopped via the parameter r12 Main switch = OFF.

Control

Table 20: Control

(1)

In order to change this parameter the regulation must be stopped via the parameter r12 Main switch = OFF.

DO cong and manual

Table 21: DO cong and manual

Function

Values

R-W

Code123456789Min. value

Max. value

Fact. value

DI alarms - Priority

0=Disabled, 3=Low, 2=Medium, 1=High

1-2

q31*********032

Defrost - Priority

0=Disabled, 3=Low, 2=Medium, 1=High

1-2

q32*********033

Miscellaneous - Priority

0=Disabled, 3=Low, 2=Medium, 1=High

1-2

q33*********032

Injection - Priority

0=Disabled, 3=Low, 2=Medium, 1=High

1-2

q34*********032

Control stopped - Priority

0=Disabled, 3=Low, 2=Medium, 1=High

1-2

q35*********033

Leak detection - Priority

0=Disabled, 3=Low, 2=Medium, 1=High

1-2

q36*********032

Food temp. sensor

1=Thermostat air, 2=Alarm air, 3=S3 Air ON evap.

1-2

(1)

q39*********132

Function

Values

R-W

Code123456789Min. value

Max. value

Fact. value

Control state A

0=Normal ctrl., 1=Hold after defrost, 2=Min ON timer, 3=Min OFF timer, 4=Drip o, 10=Main switch OFF, 11=Thermostat cut-out, 12=Frost protection S4, 13=Not_used, 14=Defrost, 15=Fan delay, 17=Door open, 18=Melt period, 19=Modulating temp. control, 20=Emergency control, 23=Adaptive superheat control, 24=Start injection, 25=Manual control, 26=No refrigerant selected, 16=Forced closing, 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-X

u00*********0480

S5 Evaporator A

0-X

u09*********-200.0 °C

200.0 °C

0.0 °C

DI1 Status

0=OFF, 1=ON

0-X

u10****010Defrost time A

0-X

u11*********0 min

900 min

0 min

S3 Air ON evap. A

0-X

u12*********-200.0 °C

200.0 °C

0.0 °C

Night condition

0=OFF, 1=ON

0-X

u13*********010

S4 Air OFF evap. A

0-X

u16*********-200.0 °C

200.0 °C

0.0 °C

Thermostat air temp. A

0-X

u17*********-200.0 °C

200.0 °C

0.0 °C

Thermostat runtime A

0-X

u18*********0 min

999 min

0 min

S2 Gas outlet A

0-X

u20*****-200.0 °C

200.0 °C

0.0 °C

Superheat A

0-X

u21*****-200.0 °C

200.0 °C

0.0 °C

Superheat reference A

0-X

u22*****-200.0 °C

200.0 °C

0.0 °C

EEV opening A

0-X

u23*****0 %

100 %

0%

Pe Evap. pressure

0-X

u25*****-1.0 Bar

200.0 Bar

0.0Bar

Te Evap. temp.

0-X

u26*****-200.0 °C

200.0 °C

0.0 °C

DI2 Status

0=OFF, 1=ON

0-X

u37*********010

Display readout 1

0-X

u56*********-200.0 °C

200.0 °C

0.0 °C

Alarm air temp. A

0-X

u57*********-200.0 °C

200.0 °C

0.0 °C

Compressor 1

0=OFF, 1=ON

0-X

u58******010Fan

0=OFF, 1=ON

0-X

u59*********010

Defrost A

0=OFF, 1=ON

0-X

u60*********010

AK-CC55 Compact

(1)

In order to change this parameter the regulation must be stopped via the parameter r12 Main switch = OFF.

(2)

In order to change this parameter the parameter r12 Main switch must be set in position "SEr" allowing manual control of outputs.

Service

Table 22: Service

Function

Values

R-W

Code123456789Min. value

Max. value

Fact. value

Rail heat

0=OFF, 1=ON

0-X

u61****010Alarm relay

0=OFF, 1=ON

0-X

u62****010Light

0=OFF, 1=ON

0-X

u63****010Compressor 2

0=OFF, 1=ON

0-X

u67**010Blinds

0=OFF, 1=ON

0-X

u82**010Air heater

0=OFF, 1=ON

0-X

u84**010Railheat power

0-X

u85*********0 %

100 %

0%

Thermostat band

1=Band 1, 2=Band 2

0-X

u86*********121

Thermostat cutin temp.

0-X

u90*********-200.0 °C

200.0 °C

4.0 °C

Thermostat cutout temp.

0-X

u91*********-200.0 °C

200.0 °C

2.0 °C

Brine valve opening

0-X

U02****

0 %

100 %

0%

Fan ECO

0=OFF, 1=ON

0-X

U37**010Network status

0-X

U45*********0 %

100 %

0%

Rail heat PWM

0-X

U59*********0 %

100 %

0%

Food temperature A

0-X

U72*********-200.0 °C

200.0 °C

0.0 °C

Defrost sensor temperature A

0-X

U73*********-200.0 °C

200.0 °C

0.0 °C

AK-CC55 Compact

Operation via AK-UI55 Bluetooth

Access to parameters via Bluetooth and app

1.

App can be downloaded from App Store and Google Play.

◦ Name = AK-CC55 Connect ◦ Start the app.

2.

Click on the display’s Bluetooth button for 3 seconds.

◦ The Bluetooth light will then ash while display is showing the controller’s address.

3.

Connect to the controller from the app.

Figure 42: AK-UI55 Bluetooth

Display info:

• Loc

• The operation is locked and cannot be operated via Bluetooth.

• Unlock from the system manager.

Figure 43: Connect to controller Figure 44: Controller dashboard Figure 45: Set-up menu

The functions are described on Page 42 – Page 54.

Function

Description

Values

Code

Short name

Main switch

Start / stop of refrigeration. With this setting refrigeration can be started, stopped or a manual override of the outputs can be allowed. (For manual control the value is set at -1. Then the outputs can be force controlled. Start / stop of refrigeration can also be accomplished with the external switch function connected to a DI input.Stopped control will give a ”Main switch OFF" alarm.

-1=Manual, 0=Stop, 1=Start

r12

r12 Main switch

Delay of outputs at power up

Delay of output signal after start-up After start-up or a power failure the controller’s functions can be delayed so that overloading of the electricity supply network is avoided. Here you can set the time delay.

o01

o01 DelayOfOutp.

Function

Description

Values

Code

Short name

Main switch

Start / stop of refrigeration. With this setting refrigeration can be started, stopped or a manual override of the outputs can be allowed. (For manual control the value is set at -1. Then the outputs can be force controlled. Start / stop of refrigeration can also be accomplished with the external switch function connected to a DI input.Stopped control will give a ”Main switch OFF" alarm.

-1=Manual, 0=Stop, 1=Start

r12

r12 Main switch

Application mode

Selection of application The controller covers several applications for control of a refrigerated case. Here you set which of the possible applications is required.This menu can only be set when regulation is stopped, i.e. “r12 Main Switch” is set to 0.

1=1. Comp/Alarm/Fan/Defrost, 2=2. Comp/Light/Fan/ Defrost, 3=3. Comp/Railheat/Fan/Defrost, 4=4. Comp/ Custom, 5=5. EEV/Comp/Fan/Defrost, 6=6. EEV/ Alarm/Fan/Defrost, 7=7. EEV/Light/Fan/Defrost, 8=8. EEV/Rail/Fan/Defrost, 9=9. EEV/Custom

o61

o61 Appl. mode

DO2 Conguration

Select the function of the digital output

0=None, 1=Fans, 2=Fan ECO, 3=Defrost, 4=Rail heat, 5=Alarm, 6=Light, 7=Blinds, 8=Compressor/LLSV, 9=Compressor 2, 10=Air heater

q02

q02 DO2 Cong.

DO3 Conguration

Select the function of the digital output

0=None, 1=Fans, 2=Fan ECO, 3=Defrost, 4=Rail heat, 5=Alarm, 6=Light, 7=Blinds, 8=Compressor/LLSV, 9=Compressor 2, 10=Air heater

q03

q03 DO3 Cong.

DO4 Conguration

Select the function of the digital output

0=None, 1=Fans, 2=Fan ECO, 3=Defrost, 4=Rail heat, 5=Alarm, 6=Light, 7=Blinds, 8=Compressor/LLSV, 9=Compressor 2, 10=Air heater

q04

q04 DO4 Cong.

AO1 Conguration

Select the function of the analogue output

0=None, 1=Rail heat PWM

q09

q09 AO1 Cong.

DI1 Conguration

Select the function of the digital input

0=None, 1=DI status, 2=Door function, 3=Door alarm, 4=Defrost start, 5=Main switch, 6=Night setback, 7=Thermostat band, 8=Alarm at closed, 9=Alarm at open, 10=Case cleaning, 11=Forced cooling, 12=Open blinds, 13=Coordinated defrost, 14=Forced closing, 15=Shutdown, 16=Light control, 20=Leak detection, 21=Adaptive liquid control

o02

o02 DI1 Cong.

DI2 Conguration

Select the function of the digital input

0=None, 1=DI status, 2=Door function, 3=Door alarm, 4=Defrost start, 5=Main switch, 6=Night setback, 7=Thermostat band, 8=Alarm at closed, 9=Alarm at open, 10=Case cleaning, 11=Forced cooling, 12=Open blinds, 13=Coordinated defrost, 14=Forced closing, 15=Shutdown, 16=Light control, 20=Leak detection, 21=Adaptive liquid control

o37

o37 DI2 Cong.

Refrigerant

Select the type of refrigerant. If the required refrigerant is not part of the list, the user dened option can be used. Please contact Danfoss for detailed informationWarning: Wrong selection of refrigerant may cause damage to the system.

0=Not seleted, 6=R13, 7=R13b1, 2=R22, 8=R23, 14=R32, 11=R114, 3=R134a, 12=R142b, 24=R170, 15=R227, 25=R290, 16=R401A, 18=R402A, 19=R404A, 21=R407A, 22=R407B, 20=R407C, 37=R407F, 49=R407H, 23=R410A, 32=R413A, 30=R417A, 31=R422A, 33=R422D, 34=R427A, 35=R438A, 40=R448A, 41=R449A, 48=R449B, 43=R450A, 44=R452B, 45=R454B, 9=R500, 4=R502, 10=R503, 17=R507, 36=R513A, 26=R600, 27=R600a, 5=R717, 28=R744, 46=R1233zdE, 38=R1234ze, 39=R1234yf, 47=R1234zeZ, 29=R1270, 42=R452A, 1=User dened, 13=User dened display

o30

o30 Refrigerant

Refrigerant factor K1

Refrigerant factor for a custom refrigerant - please contact Danfoss for detailed information

P83

P83 RfgFac.K1

AK-CC55 Compact

AK-CC55 Connect menu (SW ver. 2.0x)

Start / Stop

Table 23: Start / Stop

Conguration

Table 24: Conguration

Function

Description

Values

Code

Short name

Refrigerant factor K2

Refrigerant factor for a custom refrigerant - please contact Danfoss for detailed information

P84

P84 RfgFac.K2

Refrigerant factor K3

Refrigerant factor for a custom refrigerant - please contact Danfoss for detailed information

P85

P85 RfgFac.K3

Refrigerant factor A1

Refrigerant factor for a custom refrigerant - please contact Danfoss for detailed information

x65

--- Rfg.Fac.A1

Refrigerant factor A2

Refrigerant factor for a custom refrigerant - please contact Danfoss for detailed information

x66

--- Rfg.Fac.A2

Refrigerant factor A3

Refrigerant factor for a custom refrigerant - please contact Danfoss for detailed information

x67

--- Rfg.Fac.A3 Pe Min range

Minimum measuring range for sensor

o20

o20 MinTransPres

Pe Max range

Maximum measuring range for sensor

o21

o21 MaxTransPres

Temperature sensor type

Sensor type for S3, S4 and S5. Normally a Pt 1000 sensor with great signal accuracy is used. But you can also use a sensor with another signal accuracy. That may either be a PTC sensor (1000 ohm at 25°C) All the mounted sensors S3-S5 must be of the same type. 0 = Pt 10001 = PTC 10002 = NTC 5k3 = NTC 10k

0=Pt 1000, 1=PTC 1000, 2=NTC 5k, 3=NTC 10k

o06

o06 SensorCong

Defrost method

Select method of defrost

0=None, 1=Electrical, 2=Hot gas, 3=Brine, 4=Air/

Ocycle

d01

d01 Def. method

Defrost stop method

Here you dene whether a defrost cycle is to be stopped by time or by a temperature sensor

0=Time, 1=S5 sensor, 2=S4 sensor

d10

d10 DefStopSens.

Defrost stop limit A

When the selected defrost stop sensor reaches the set limit, the defrost cycle is terminated

d02

d02 Def.StopTemp

Food type

When changing the food type the controller will automatically adapt temperature setpoints and alarm limits according to the selected food type. Please be aware that the setting will revert to "None" after having been changed.

0=None, 1=Vegetables, 2=Dairy, 3=Meat and sh, 4=Frozen food, 5=Ice cream

r89

r89 Food type

Food temp. sensor

Select the temperature to be used for the food temperature representation

1=Thermostat air, 2=Alarm air, 3=S3 Air ON evap.

q39

q39 Food sensor Network address

Network address of the controller

o03

o03 Unit addr.

Service pin

If the controller is built into a LonWorks network with data communication, it must have an address, and the system manager must know this address.The address is sent to the system manager when the menu is set in pos. ON.



IMPORTANT:

Before you set o04, you MUST set the application mode of the controller (The function is not used when the data communication is MODBUS)

0=OFF, 1=ON

o04

o04 Service pin

Function

Description

Values

Code

Short name

Control state A

Readout of the actual control state of the controller

0=Normal ctrl., 1=Hold after defrost, 2=Min ON timer, 3=Min OFF timer, 4=Drip o, 10=Main switch OFF, 11=Thermostat cut-out, 12=Frost protection S4, 13=Not_used, 14=Defrost, 15=Fan delay, 17=Door open, 18=Melt period, 19=Modulating temp. control, 20=Emergency control, 23=Adaptive superheat control, 24=Start injection, 25=Manual control, 26=No refrigerant selected, 16=Forced closing, 29=Case cleaning, 30=Forced cooling, 31=Door open, 32=Power-up delay, 33=Air heating, 45=Shut down controller, 48=Adaptive liquid control

u00

u00 Ctrl. state

Thermostat air temp. A

Thermostat temperature

u17

u17 Ther. air Food temperature A

Read out of food temperature

U72

U72 Food temp.

S3 Air ON evap. A

Actual sensor value

u12

u12 S3 air temp.

S4 Air OFF evap. A

Actual sensor value

u16

u16 S4 air temp.

Night condition

Status at the day-/night operation (night operation:

on/o)

0=OFF, 1=ON

u13

u13 Night Cond.

Thermostat cutin temp.

Readout of the actual cutin value for the thermostat

u90

u90 Cutin temp.

Thermostat cutout temp.

Readout of the actual cut out value for the thermostat

u91

u91 Cutout temp.

AK-CC55 Compact

Thermostat control

Table 25: Thermostat control

Function

Description

Values

Code

Short name

Thermostat runtime A

Read the ongoing cutin time for the thermostat or the duration of the last completed cutin

u18

u18 Ther runtime

Thermostat band

Readout of which thermostat used for regulation: 1= Thermostat band 12= Thermostat band 2

1=Band 1, 2=Band 2

u86

u86 Ther. band Air heater

Actual status of output function

0=OFF, 1=ON

u84

u84 Heat relay

Thermostat mode

Here it is dened how the thermostat is to operate. Either as an ordinary ON/OFF thermostat or as a modulating thermostat.When operation is ”modulating” the valve will limit the ow of refrigerant so that the temperature variation will be less than for the ON/OFF thermostat.The thermostat dierential (r01) must not be set lower than 2K for ""modulating"".In a decentralised plant you must select the ON/OFF thermostat setting."

2=Modulating, 1=ON/OFF

r14

r14 Therm. mode

Cutout 1

Set point. The thermostat’s cutout value when the given thermostat band is in use

r00

r00 Cutout

Cutout 2

Set point. The thermostat’s cutout value when the given thermostat band is in use

r21

r21 Cutout 2

Dierential

When the temperature is higher than the set cutout + the set dierential, the compressor relay will be cut in. It will cut out again when the temperature comes down to the set cutout limit

r01

r01 Dierential

Max cutout limit

Setpoint limitation - The controller’s setting range for the thermostat setpoint may be narrowed down, so that much too high or much too low values are not set accidentally - with resulting damages.To avoid a too high setting of the setpoint, the max. allowable reference value may be lowered

r02

r02 Max cutout

Min cutout limit

Setpoint limitation - The controller’s setting range for the thermostat setpoint may be narrowed down, so that much too high or much too low values are not set accidentally - with resulting damages.To avoid a too low setting of the setpoint, the min. allowable reference value may be increased

r03

r03 Min cutout

Thermostat sensor S4 %

Selection of thermostat sensor. Here you dene the sensor the thermostat is to use for its control function. S3, S4, or a combination of them. With the setting 0%, only S3 is used. With 100%, only S4.

r15

r15 Ther. S4 %

Thermostat sensor S4 % night

Selection of thermostat sensor S4% during night operation with night blinds. Here you dene the sensor the thermostat is to use for its control function. S3, S4, or a combination of them. With the setting 0%, only S3 is used. With 100%, only S4.

r61

r61 Ther.S4% Ngt

Night oset

Night setback value.The thermostat’s reference will be the setpoint plus this value when the controller changes over to night operation.

r13

r13 Night oset

S4 frost protection

Frost protection on S4 air temperature. If the S4 temperature sensors measures a temperature lower than the set limit, refrigeration will be stopped in order to protect produce from ice formation. Refrigeration will start again when the S4 temperature has risen 2K above the set limit

r98

r98 S4 Min Lim

Air heater neutral zone

Heat function. Set the width of the Neutral Zone for changeover from cooling to heating "

r62

r62 Heat NZ

Air heater start delay

Time delay on transition from refrigeration phase to heating phase (there is not time delay on transition from heating phase to refrigeration phase)

r63

r63 HeatStartDel

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.

r16

r16 MeltInterval

Melt period

Melt period. Here you set how long an on-going melt function is to last

r17

r17 Melt period

AK-CC55 Compact

Function

Description

Values

Code

Short name

Control state A

Readout of the actual control state of the controller

0=Normal ctrl., 1=Hold after defrost, 2=Min ON timer, 3=Min OFF timer, 4=Drip o, 10=Main switch OFF, 11=Thermostat cut-out, 12=Frost protection S4, 13=Not_used, 14=Defrost, 15=Fan delay, 17=Door open, 18=Melt period, 19=Modulating temp. control, 20=Emergency control, 23=Adaptive superheat control, 24=Start injection, 25=Manual control, 26=No refrigerant selected, 16=Forced closing, 29=Case cleaning, 30=Forced cooling, 31=Door open, 32=Power-up delay, 33=Air heating, 45=Shut down controller, 48=Adaptive liquid control

u00

u00 Ctrl. state

Alarm status

Actual alarm status

0=OFF, 1=ON

x16

--- Sum alarm

Alarm air temp. A

Measured temperature for alarm thermostat

u57

u57 Alarm air

High alarm limit

Readout of actual high alarm limit for the temperature monitoring

y10

--- High al. lim

Low alarm limit

Readout of actual low alarm limit for the temperature monitoring

y11

--- Low al. lim S3 Air ON evap. A

Actual sensor value

u12

u12 S3 air temp.

S4 Air OFF evap. A

Actual sensor value

u16

u16 S4 air temp.

Reset alarms

Command for resetting all alarms, unless they are still active

0=OFF, 1=ON

x15

--- Reset alarm

Alarm sensor S4% A

Signal to the alarm thermostat Here you have to dene the ratio between the sensors which the alarm thermostat has to use. S3, S4 or a combination of the two. With setting 0% only S3 is used. With 100% only S4 is used

A36

A36 Alarm S4 %

High alarm limit 1

Upper alarm limit. The limit value is set in absolute value. The limit value will be raised with the night o- set during night operation.

A13

A13 HighLim Air Low alarm limit 1

Lower alarm limit. The limit value is set in absolute value

A14

A14 LowLim Air

High alarm limit 2

Upper alarm limit. The limit value is set in absolute value. The limit value will be raised with the night o- set during night operation.

A20

A20 HighLim2 Air Low alarm limit 2

Lower alarm limit. The limit value is set in absolute value

A21

A21 LowLim2 Air

Alarm delay A

Alarm delay (short alarm delay on air temperature). If the upper or the lower alarm limit values are exceeded, a timer function will commence. The alarm will not become active until the set time delay has been passed. The time delay is set in minutes

A03

A03 Alarm delay

Alarm delay pulldown A

Alarm delay at tempeature pulldown conditions (long alarm delay). This time delay is used during start-up, during defrost, immediately after a defrost. There will be change-over to the normal time delay when the temperature has dropped below the set upper alarm limit.

A12

A12 Pulldown del

Door open alarm delay

Time delay for door alarm

A04

A04 DoorOpen del

Door restart inj. delay

Start of refrigeration when door is open. If the door has been left open, refrigeration will be started after the set time.

o89

o89 DoorInjStart

Alarm delay DI 1

Time delay for digital input alarm

A27

A27 Al.Delay DI1

Alarm delay DI 2

Time delay for digital input alarm

A28

A28 Al.Delay DI2

AK-CC55 Compact

Alarm limits and delays

Table 26: Alarm limits and delays

Function

Description

Values

Code

Short name

Control state A

Readout of the actual control state of the controller

0=Normal ctrl., 1=Hold after defrost, 2=Min ON timer, 3=Min OFF timer, 4=Drip o, 10=Main switch OFF, 11=Thermostat cut-out, 12=Frost protection S4, 13=Not_used, 14=Defrost, 15=Fan delay, 17=Door open, 18=Melt period, 19=Modulating temp. control, 20=Emergency control, 23=Adaptive superheat control, 24=Start injection, 25=Manual control, 26=No refrigerant selected, 16=Forced closing, 29=Case cleaning, 30=Forced cooling, 31=Door open, 32=Power-up delay, 33=Air heating, 45=Shut down controller, 48=Adaptive liquid control

u00

u00 Ctrl. state

Thermostat air temp. A

Thermostat temperature

u17

u17 Ther. air S3 Air ON evap. A

Actual sensor value

u12

u12 S3 air temp.

S4 Air OFF evap. A

Actual sensor value

u16

u16 S4 air temp.

EEV opening A

Actual status of output function

u23

u23 EEV OD %

Pe Evap. pressure

Actual sensor signal

u25

u25 EvapPress Pe

Te Evap. temp.

Temperature converted from pressure

u26

u26 EvapTemp Te

S2 Gas outlet A

Actual sensor value

u20

u20 S2 temp.

Superheat A

Readout of actual superheat at the outlet of the evaporator

u21

u21 Superheat

Superheat reference A

Read out of the actual superheat reference

u22

u22 SuperheatRef Brine valve opening

Actual status of output function

U02

U02 PWM OD %

Min superheat limit

Min. value for the superheat reference

n10

n10 Min SH

Max superheat limit

Max. value for the superheat reference

n09

n09 Max SH

MOP temperature

MOP temperature. The valve opening degree is reduced until the evaporating temperature reaches the set MOP limit. If no MOP function is required, select highest value, which corresponds to OFF

n11

n11 MOP temp.

AKV Period time

Period time for the pulse width modulation

n13

n13 AKV Period

Min superheat liquid ctrl

Min. value for the superheat reference during adaptive liquid control

P87

P87 SH Min Liq.

Max superheat liquid ctrl.

Max. value for the superheat reference during adaptive liquid control

P86

P86 SH Max Liq.

Brine valve - Period time

Period time for the pulse width modulation

n63

n63 Pwm Period

Brine valve max OD

Expert setting - please contact Danfoss for further info

n64

n64 Pwm Max. OD

Brine valve min OD

Expert setting - please contact Danfoss for further info

n65

n65 Pwm Min. OD

Brine valve windup

Expert setting - please contact Danfoss for further info

n66

n66 PwmWindUpFac

Brine valve Kp

Expert setting - please contact Danfoss for further info

n67

n67 Pwm Kp fact.

Brine valve Tn

Expert setting - please contact Danfoss for further info

n68

n68 Pwm Tn sec

Function

Description

Values

Code

Short name

Control state A

Readout of the actual control state of the controller

0=Normal ctrl., 1=Hold after defrost, 2=Min ON timer, 3=Min OFF timer, 4=Drip o, 10=Main switch OFF, 11=Thermostat cut-out, 12=Frost protection S4, 13=Not_used, 14=Defrost, 15=Fan delay, 17=Door open, 18=Melt period, 19=Modulating temp. control, 20=Emergency control, 23=Adaptive superheat control, 24=Start injection, 25=Manual control, 26=No refrigerant selected, 16=Forced closing, 29=Case cleaning, 30=Forced cooling, 31=Door open, 32=Power-up delay, 33=Air heating, 45=Shut down controller, 48=Adaptive liquid control

u00

u00 Ctrl. state

Defrost sensor temperature A

Actual temperature of selected defrost stop sensor

U73

U73 Def.StopTemp S5 Evaporator A

Actual sensor value

u09

u09 S5 temp.

AK-CC55 Compact

Injection control

Table 27: Injection control

Defrost control

Table 28: Defrost control

Function

Description

Values

Code

Short name

Defrost A

Actual status of output function

0=OFF, 1=ON

u60

u60 Def. relay

Defrost time A

Read the duration of the ongoing defrost or the duration of the last completed defrost.

u11

u11 Defrost time Start defrost

Command for starting a defrost

0=OFF, 1=ON

x09

--- Def. Start

Stop defrost

Command for stopping an ongoing defrost cycle

0=OFF, 1=ON

x10

--- Def. Stop

Defrost method

Select method of defrost

0=None, 1=Electrical, 2=Hot gas, 3=Brine, 4=Air/

Ocycle

d01

d01 Def. method

Defrost stop method

Here you dene whether a defrost cycle is to be stopped by time or by a temperature sensor

0=Time, 1=S5 sensor, 2=S4 sensor

d10

d10 DefStopSens.

Defrost stop limit A

When the selected defrost stop sensor reaches the set limit, the defrost cycle is terminated

d02

d02 Def.StopTemp

Max defrost time

Max duration of a defrost cycle. The setting is also used as a safety time if the defrost is stopped on temperature. If the selected defrost stop sensor does not reach the set defrost stop temperature limit within the set time, the defrost will be stopped anyway.

d04

d04 Max Def.time

Defrost start interval

The function is zeroset and will start the timer function at each defrost start. When the time has expired the function will start a defrost. The function is used as a simple defrost start, or it may be used as a safeguard if the normal signal fails to appear. If master/ slave defrost without clock function or without data communication is used, the interval time will be used as max. time between defrosts. If a defrost start via data communcation does not take place, the interval time will be used as max. time between defrosts.When there is defrost with clock function or data communication, the interval time must be set for a somewhat longer period of time than the planned one. In connection with power failure the interval time will be maintained, and when the power returns the interval time will continue from the maintained value. he interval time is not active when set to 0

d03

d03 Def.Interval

Time staggering power up

Time staggering for defrost cutins during start-up The function is only relevant if you have several refrigeration appliances or groups where you want the defrost to be staggered in relation to one another. The function is furthermore only relevant if you have chosen defrost with interval start. The function delays the interval time by the set number of minutes, but it only does it once, and this at the very rst defrost taking place when voltage is connected to the controller. The function will be active after each and every power failure.

d05

d05 Time stagg.

Max thermostat runtime

Defrost on demand – aggregate refrigeration time Set here is the refrigeration time allowed without defrosts. If the time is passed, a defrost will be started. With setting = 0 the function is not in use.

d18

d18 MaxTherRunT.

Pump down delay

Set the time where the evaporator is emptied of refrigerant prior to the actual defrost cycle

d16

d16 Pump dwn del

Drip o time

Here you set the time that is to elapse from a defrost and until the compressor is to start again. (The time when water drips o the evaporator).

d06

d06 DripO time

Max hold time

Max. standby time after coordinated defrost. When a controller has completed a defrost it will wait for a signal which tells that the refrigeration may be resumed. If this signal fails to appear for one reason or another, the controller will itself start the refrigeration when this standby time has elapsed.

o16

o16 MaxHoldTime

Fan control during defrost

Fan operation during defrost Here you can set how the fan is to operate during defrost.0: Stopped (Runs during pump down)1: Running (stopped during "fan delay")2: Running during pump down and defrost. After that stopped3: Running during pump down and defrost until defrost stop sensor reaches fan stop temperature limit

0=OFF, 1=ON, 2=OFF at drip, 3=OFF at high temp

d09

d09 FanDuringDef

Fan start delay

Delay of fan start after defrost. Here you set the time that is to elapse from compressor start after a defrost and until the fan may start again. (The time when remaining water is transformed into ice on the evaporator).

d07

d07 FanStartDel

Fan start temperature

Temperature limit for starting the fans after a defrost. When the measured S5 evaporator temperature is getting below the set limit, the fans are started

d08

d08 FanStartTemp

AK-CC55 Compact

Function

Description

Values

Code

Short name

Fan stop temperature

If the fan control during defrost has been set up for it, the fans can be stopped during the defrost if the defrost sensor exceeds the set temperature limit

d41

d41 Def Fan Stop

Rail heat during defrost

Dene how railheat is controlled during defrost0: Railheat is OFF all the time1: Railheat is ON all the time2: Normal railheat control

0=OFF, 1=ON, 2=Normal control

d27

d27 Railh.at def

Display delay after defrost

Set the maximum time the display should show the defrost code "-d-" after a defrost. The normal temperature readout is normally started when the temperature in the case is OK again or if a high temperature alarm is raised.

d40

d40 Disp. d del.

Function

Description

Values

Code

Short name

Defrost schedule

0=No, 1=Yes

t00

t00 Def.Schedule

Def. start 1 - Hours

t01

t01 Def. 1 hr.

Def. start 1 - Minutes

t11

t11 Def. 1 min.

Def. start 2 - Hours

t02

t02 Def. 2 hr.

Def. start 2 - Minutes

t12

t12 Def. 2 min.

Def. start 3 - Hours

t03

t03 Def. 3 hr.

Def. start 3 - Minutes

t13

t13 Def. 3 min.

Def. start 4 - Hours

t04

t04 Def. 4 hr.

Def. start 4 - Minutes

t14

t14 Def. 4 min.

Def. start 5 - Hours

t05

t05 Def. 5 hr.

Def. start 5 - Minutes

t15

t15 Def. 5 min.

Def. start 6 - Hours

t06

t06 Def. 6 hr.

Def. start 6 - Minutes

t16

t16 Def. 6 min.

Monday - Follow schedule

0=No, 1=Yes

t51

t51 Mon.Schedule

Tuesday - Follow schedule

0=No, 1=Yes

t52

t52 Tue.Schedule

Wednesday - Follow schedule

0=No, 1=Yes

t53

t53 Wed.Schedule

Thursday - Follow schedule

0=No, 1=Yes

t54

t54 Thu.Schedule

Friday - Follow schedule

0=No, 1=Yes

t55

t55 Fri.Schedule

Saturday - Follow schedule

0=No, 1=Yes

t56

t56 Sat.Schedule

Sunday - Follow schedule

0=No, 1=Yes

t57

t57 Sun.Schedule

Function

Description

Values

Code

Short name

Compressor 1

Actual status of output function

0=OFF, 1=ON

u58

u58 Comp1/LLSV

Compressor 2

Actual status of output function

0=OFF, 1=ON

u67

u67 Comp2 relay

Min ON time

Minimum time the compressor is to run once it has been started.

c01

c01 Min. On time Min OFF time

Minimum time the compressor has to be stopped

c02

Min.O time

Delay between comp.

Time delay for couplings of two compressors. The step delay is the time that has to elapse from the rst compressor cuts in and until the next compressor can cut in.

c05

c05 Step delay

Step control mode

Selection of step control mode for compressors. At sequential mode compressor 1 will always be the rst to start and the last to stop. In cyclic mode the run time between the compressor will be equalized.

1=Sequential, 2=Cyclic

c08

c08 Step mode

AK-CC55 Compact

Defrost schedules

Table 29: Defrost schedules

Compressor

Table 30: Compressor

Function

Description

Values

Code

Short name

Control state A

Readout of the actual control state of the controller

0=Normal ctrl., 1=Hold after defrost, 2=Min ON timer, 3=Min OFF timer, 4=Drip o, 10=Main switch OFF, 11=Thermostat cut-out, 12=Frost protection S4, 13=Not_used, 14=Defrost, 15=Fan delay, 17=Door open, 18=Melt period, 19=Modulating temp. control, 20=Emergency control, 23=Adaptive superheat control, 24=Start injection, 25=Manual control, 26=No refrigerant selected, 16=Forced closing, 29=Case cleaning, 30=Forced cooling, 31=Door open, 32=Power-up delay, 33=Air heating, 45=Shut down controller, 48=Adaptive liquid control

u00

u00 Ctrl. state

Fan

Actual status of output function

0=OFF, 1=ON

u59

u59 Fan relay

Fan ECO

Actual status of output function

0=OFF, 1=ON

U37

U37 Fan Eco

Fan pulsing mode

Pulse operation of fan 0: No pulse operation 1: Pulse operation when the thermostat is cut out2: Pulse operation when the thermostat is cut out, but only during night operation

0=No pulsing, 1=Pulsing cutout, 2=Pulsing cutout night

F05

F05 FanPulseMode

Fan period time

Periodtime for pulsing of fan

F06

F06 Fan cycle

Fan ON cycle

ON time for fan. The ON period is set as a percentage of the period time

F07

F07 Fan ON %

Fan stop high S5 temp.

Fan stop temperature The function stops the fans in an error situation, so that they will not provide power to the appliance. If the defrost sensor registers a higher temperature than the one set here, the fans will be stopped. There will be re-start at 2 K below the setting. The function is not active during a defrost or start-up after a defrost.

F04

F04 FanStop temp

Fan at forced closing

You can set whether fans should be operational or stopped if the function "Forced closing" is activated here. 0: Fans are OFF1: Fans are ON2: Fans are OFF and defrost is not permitted3: Fans are ON and defrost is not permitted

0=OFF, 1=ON, 2=OFF and suppress defrost, 3=ON and suppress defrost

o90

o90 Fan ForcedCl

Fan stop at blinds closing

When blinds are closing the fans are stopped in the dened time delay in order to ensure that the blinds are closed correctly

P65

P65 BlindFanStop

Function

Description

Values

Code

Short name

Control state A

Readout of the actual control state of the controller

0=Normal ctrl., 1=Hold after defrost, 2=Min ON timer, 3=Min OFF timer, 4=Drip o, 10=Main switch OFF, 11=Thermostat cut-out, 12=Frost protection S4, 13=Not_used, 14=Defrost, 15=Fan delay, 17=Door open, 18=Melt period, 19=Modulating temp. control, 20=Emergency control, 23=Adaptive superheat control, 24=Start injection, 25=Manual control, 26=No refrigerant selected, 16=Forced closing, 29=Case cleaning, 30=Forced cooling, 31=Door open, 32=Power-up delay, 33=Air heating, 45=Shut down controller, 48=Adaptive liquid control

u00

u00 Ctrl. state

Dewpoint

Actual dewpoint received from system manager via network

x18

--- Dew point Rail heat

Actual status of output function

0=OFF, 1=ON

u61

u61 Railh. relay

Railheat power

Readout of the actual rail power in %

u85

u85 Rail DutyC %

Rail heat PWM

Actual status of output function

U59

U59 Railheat PWM

Rail heat control mode

The rail heat can be controlled in several ways: 0: Railheat is running all the time 1: Pulse control is used with a timer function following the day/night operation 2: Pulse control is used with a dew point function. This function requires that a signal is received about the dew point value. The value is measured by a system manager and sent to the controller via the data communication.

0=ON, 1=Day/Night timer, 2=Dew point ctrl.

o85

o85 Railh. mode

Rail heat ON cycle day

Railheat power during day time. The ON period is set as a percentage of the period

o41

o41 Railh.ONday%

Rail heat ON cycle night

Railheat power during night time. The ON period is set as a percentage of the period time

o42

o42 Railh.ONngt%

AK-CC55 Compact

Fan control

Table 31: Fan control

Railheat control

Table 32: Railheat control

Function

Description

Values

Code

Short name

Rail heat period time

Periodtime for pulsing of railheat

o43

o43 Railh.cycle

Rail heat PWM - Period time

Period time for the pulse width modulation

P82

P82 RailCyclePWM

Rail heat min ON cycle

Lowest permitted rail heat power. When the measured dew point is below the dened minimum limit the rail heat will run with the set minimum power

o88

o88 Rail Min ON% Dewpoint min limit

If the measuered dew point is below the set value the rail heat is running at minimum heat

o86

o86 DewP Min lim

Dewpoint max limit

If the measured dew point is above the set value the rail heat is maximum

o87

o87 DewP Max lim

Function

Description

Values

Code

Short name

Control state A

Readout of the actual control state of the controller

0=Normal ctrl., 1=Hold after defrost, 2=Min ON timer, 3=Min OFF timer, 4=Drip o, 10=Main switch OFF, 11=Thermostat cutout, 12=Frost protection S4, 13=Not_used, 14=Defrost, 15=Fan delay, 17=Door open, 18=Melt period, 19=Modulating temp. control, 20=Emergency control, 23=Adaptive superheat control, 24=Start injection, 25=Manual control, 26=No refrigerant selected, 16=Forced closing, 29=Case cleaning, 30=Forced cooling, 31=Door open, 32=Power-up delay, 33=Air heating, 45=Shut down controller, 48=Adaptive liquid control

u00

u00 Ctrl. state

Night condition

Status at the day-/night operation (night operation: on/o)

0=OFF, 1=ON

u13

u13 Night Cond.

Light

Actual status of output function

0=OFF, 1=ON

u63

u63 Light relay

Blinds

Actual status of output function

0=OFF, 1=ON

u82

u82 Blinds relay

Light control mode

Conguration of light function1: Light is controlled via day/ night status 2: Light is controlled via data communication and master control parameter "MC Light signal" 3: Light is controlled by door contact on DI input. When the door is opened the relay will cut in. When the door is closed again there will be a time delay of two minutes before the light is switched o. 4: As "2" but if there are any 15-minute network errors, the light will switch on and the night blind will open. 5: Light is controlled via DI input signal

1=Day and night, 2=Network, 3=Door switch, 4=Network (Fallback), 5=Digital input

o38

o38 Light

cong

Light at Main switch OFF

Dene how light and blinds are to be controlled at Main switch OFF 0: Light is switched o and night blinds are open when the main switch is o 1: Light and night blinds are independent of main switch.

0=OFF, 1=Normal ctrl.

o98

o98 Light

MS=O

Blinds max open time

Time delay from when blinds have been opened manually until they close again

P60

P60 BlindOpenTim

Case cleaning mode

The status of the function can be followed here or the function can be started manually.0 = Normal operation (no cleaning) 1 = Only fans are running to defrost the evaporator. All other outputs are O. 2 = Cleaning with stopped fans. All outputs are O. If the function is controlled by a digital input signal, the relevant status can be seen here in the menu.

0=OFF, 1=Fans run, 2=Cleaning

o46

o46 Case clean

AK-CC55 Compact

Light/Blinds/Cleaning control

Table 33: Light/Blinds/Cleaning control

Function

Description

Values

Code

Short name

Control state A

Readout of the actual control state of the controller

0=Normal ctrl., 1=Hold after defrost, 2=Min ON timer, 3=Min OFF timer, 4=Drip o, 10=Main switch OFF, 11=Thermostat cut-out, 12=Frost protection S4, 13=Not_used, 14=Defrost, 15=Fan delay, 17=Door open, 18=Melt period, 19=Modulating temp. control, 20=Emergency control, 23=Adaptive superheat control, 24=Start injection, 25=Manual control, 26=No refrigerant selected, 16=Forced closing, 29=Case cleaning, 30=Forced cooling, 31=Door open, 32=Power-up delay, 33=Air heating, 45=Shut down controller, 48=Adaptive liquid control

u00

u00 Ctrl. state

Display readout 1

Read out of the temperature shown on the display

u56

u56 Display air

Display air S4%

Signal to the display sensor. Here you have to dene the ratio between the sensors which the display has to use. S3, S4 or a combination of the two. With setting 0% only S3 is used. With 100% only S4 is used

o17

o17 Disp. S4 %

Display readout adjustment

Correction of the display´s temperature.If the temperature at the products and the temperature received by the controller are not identical, an oset adjustment of the display temperature can be carried out."

r04

r04 Disp. Adj. K

Temperature unit

Select whether temperatures are to be shown as °C or as °F.

0=Celsius, 1=Fahrenheit

r05

r05 Temp.unit

Display lock

With this setting it is possible to lock the keypad operation of the local display. When not used for some time, the local display will lock the button operations and a special key combination is required in order to use the keypad

0=OFF, 1=ON

P89

P89 LockDispKey

Function

Description

Values

Code

Short name

Alarm relay

Actual status of output function

0=OFF, 1=ON

u62

u62 Alarm relay

Alarm relay priority

Set which alarm priorities that are to activate the alarm relay: 0=Not used, alarm relay is not used1: High, alarm with high priority will activate relay2: Medium, alarms with high or medium priority will activate the alarm relay3: All, all alarms will activate alarm relay

0=Not used, 1=High Priority, 2=Medium priority, 3=All

P41

P41 Al.Rel.Prio

Mute alarm

When muting alarms, the alarm relay will stop signalling the alarm until a new alarm arises

0=OFF, 1=ON

q38

q38 Mute Alarm

High temperature Priority

Select the priority of the alarms associated to the alarm group. Be aware - by selecting "Disable" the alarms will not be shown on the display or be routed to the alarm relay or to the network.

0=Disabled, 3=Low, 2=Medium, 1=High

q28

q28 Hi Temp Prio

Low temperature Priority

Select the priority of the alarms associated to the alarm group. Be aware - by selecting "Disable" the alarms will not be shown on the display or be routed to the alarm relay or to the network.

0=Disabled, 3=Low, 2=Medium, 1=High

q29

q29 Lo Temp Prio

Sensor errors - Priority

Select the priority of the alarms associated to the alarm group. Be aware - by selecting "Disable" the alarms will not be shown on the display or be routed to the alarm relay or to the network.

0=Disabled, 3=Low, 2=Medium, 1=High

q30

q30 Sensor Prio

DI alarms - Priority

Select the priority of the alarms associated to the alarm group. Be aware - by selecting "Disable" the alarms will not be shown on the display or be routed to the alarm relay or to the network.

0=Disabled, 3=Low, 2=Medium, 1=High

q31

q31 DIAlarm Prio

Defrost - Priority

Select the priority of the alarms associated to the alarm group. Be aware - by selecting "Disable" the alarms will not be shown on the display or be routed to the alarm relay or to the network.

0=Disabled, 3=Low, 2=Medium, 1=High

q32

q32 Defrost Prio

Miscellaneous - Priority

Select the priority of the alarms associated to the alarm group. Be aware - by selecting "Disable" the alarms will not be shown on the display or be routed to the alarm relay or to the network.

0=Disabled, 3=Low, 2=Medium, 1=High

q33

q33 Misc Prio

AK-CC55 Compact

Display control

Table 34: Display control

Alarm relay priorities

Table 35: Alarm relay priorities

Function

Description

Values

Code

Short name

Injection - Priority

Select the priority of the alarms associated to the alarm group. Be aware - by selecting "Disable" the alarms will not be shown on the display or be routed to the alarm relay or to the network.

0=Disabled, 3=Low, 2=Medium, 1=High

q34

q34 Inject Prio

Control stopped Priority

Select the priority of the alarms associated to the alarm group. Be aware - by selecting "Disable" the alarms will not be shown on the display or be routed to the alarm relay or to the network.

0=Disabled, 3=Low, 2=Medium, 1=High

q35

q35 CtrlOFF Prio

Leak detection - Priority

Select the priority of the alarms associated to the alarm group. Be aware - by selecting "Disable" the alarms will not be shown on the display or be routed to the alarm relay or to the network.

0=Disabled, 3=Low, 2=Medium, 1=High

q36

q36 Leak Prio

Function

Description

Values

Code

Short name

Access code 3

Access code for local display

o05

o05 Acc. code 3

Access code 2

Access code for local display

o64

o64 Acc. code 2

Access code 1

Access code for local display

P88

P88 Acc. code 1

Function

Description

Values

Code

Short name

Network status

Quality of the network communication

U45

U45 Comm. status

Network address

Network address of the controller

o03

o03 Unit addr.

Baudrate

Communication speed of network

1=Auto, 2=9600 Baud, 3=19200 Baud, 4=38400 Baud

x96

--- Bus baudrate

Parity and stop bit

Select parity and stop bit of Modbus messages

0=None, 1=Even, 2=Odd

x97

--- Parity bit

Function

Description

Values

Code

Short name

S3 Air ON evap. A Adjustment

Correction of sensor signal e.g. due to long sensor cable

r10

r10 Adjust S3

S4 Air OFF evap. A Adjustment

Correction of sensor signal e.g. due to long sensor cable

r09

r09 Adjust S4

Function

Description

Values

Code

Short name

Make new factory

With this command you save the controller’s actual settings as a new basic setting (the earlier factory settings are overwritten).

0=OFF, 1=ON

o67

o67 Make factory Reset to factory settings

Command which will revert all controller settings to factory values.

0=OFF, 1=ON

z06

--- Reset factory

Function

Description

Values

Code

Short name

Superheat ctrl. mode A

Select how to control the superheat of the evaporator. At adaptive control the superheat reference is adapted automatically to give the best utilization of the evaporator surface. At load based control the superheat reference is increased at high loads

1=Adaptive, 2=Load based

n21

n21 SH mode

Superheat close A

Minimum superheat limit where the valve is closing

x68

--- SH close

AFidentForce A

Expert setting - contact Danfoss for further information

x69

--- AFidentForce

Superheat Kp min A

Min limit for

amplication factor of PI controller ad-

justing the valve opening degree (expert setting)

x70

--- SH Kp min

Superheat Kp max A

Max limit for

amplication factor of PI controller ad-

justing the valve opening degree (expert setting)

x71

--- SH Kp max

Superheat Tn A

Integration time of PI controller adjusting the valve opening degree (expert setting)

x72

--- SH Tn

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

AK-CC55 Compact

Miscellaneous

Table 36: Miscellaneous → Access codes

Table 37: Miscellaneous → Network

Table 38: Miscellaneous → Sensor adjustment

Table 39: Miscellaneous → Factory reset

Advanced

Table 40: Advanced → Advanced injection control

Function

Description

Values

Code

Short name

Tn MTR control A

Integration time for modulating temperature control (Expert setting)

x78

--- MTR Tn sec

AFident A

Expert readout - contact Danfoss for further information

x79

--- AFident

Calculated Max OD A

Calculated maximum opening degree of injection valve (expert readout)

x80

--- Max OD %

Superheat close liquid ctrl. A

Minimum limit of superheat where the valve is closing duting adaptive liquid control

x87

--- SH close Liq

AFident Ee

Expert readout - contact Danfoss for further information

Y20

--- AFident Ee

Aver.OD Ee

Expert readout - contact Danfoss for further information

Y21

--- Aver.OD Ee

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

Function

Description

Values

Code

Short name

Regulation condition 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 between 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 liquid 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.

MC Defrost start

Master control signal for starting a defrost. At adaptive defrost the defrost might be skipped if the defrost is not needed

0=OFF, 1=ON

x13

--- MC def.start

MC Defrost state

Read out the actual state of the defrost

0=OFF, 1=ON

x14

--- DefrostState

MC Hold after defrost

Master control signal used for co-ordinated defrost control to hold cabinets from returning to normal refrigeration after a defrost until all cabinets have terminated defrost

0=OFF, 1=ON

x11

--- HoldAfterDef

MC Stop defrost

Master control signal used to prevent a defrost start in a controller.

0=OFF, 1=ON

x12

--- Disable def.

MC Light signal

Master control signal for control of light via data communication signal from system manager

0=OFF, 1=ON

o39

o39 Light remote

MC Actual dewpoint

Master control signal sending the actual measured dew point from system manager to controller over the network.

x03

--- Act.DewPoint

MC Po load factor

x83

--- Load factor

MC Bluetooth lock

Master control signal that will lock down all Bluetooth datacommunication

0=OFF, 1=ON

aaa

--- BT lock

MC Min delta T

Required minimum delta temperature across evaporator (S3 - Te) in order to keep the air temperature at the actual set point

y04

--- Min Delta T

AK-CC55 Compact

Table 41: Advanced → Master control

Code

Alarm text

Description

E01

Hardware failure

The controller has a hardware failure

E06

Clock lost time

Clock has lost valid time

E20

Pe Evap. pressure A - Sensor error

Sensor signal is out of range. Please check the sensor for correct operation

E24

S2 Gas outlet A - Sensor error

Sensor signal is out of range. Please check the sensor for correct operation

E25

S3 Air ON evap. A - Sensor error

Sensor signal is out of range. Please check the sensor for correct operation

E26

S4 Air OFF evap. A - Sensor error

Sensor signal is out of range. Please check the sensor for correct operation

E27

S5 Evaporator A - Sensor error

Sensor signal is out of range. Please check the sensor for correct operation

A01

High temperature alarm A

The alarm temperature has been above the max alarm limit for a longer time period than the set alarm delay.

A02

Low temperature alarm A

The alarm temperature has been below the min alarm limit for a longer time period than the set alarm delay.

A04

Door open alarm

The door has been open for a too long time

A05

Max defrost hold time exceeded

The controller has been waiting longer time than permitted after a co-ordinated defrost.

A11

Refrigerant not selected

The refrigerant has not been selected hence control can not be initiated

A15

DI alarm 1

Alarm signal from digital input signal

A16

DI alarm 2

Alarm signal from digital input signal

A45

Main switch set OFF

The controller manin switch has been set to either Stop or Manaual control. Alternatively a digital input set up for "main switch" function, has stopped control

A59

Case in cleaning mode

A case cleaning operation has been started on a case

AA2

CO2 leak detected

CO2 is leaking from the refrigerantion system

AA3

Refrigerant leak detected

Refrigerant is leaking from the refrigeration system

a04

Wrong IO conguration

Inputs and outputs have not been congured correctly

AK-CC55 Compact

Fault message

In an error situation the alarm LED on the front will be on and the alarm relay will be activated (depending on priority). If you push the alarm button for 3 seconds you can see the alarm report in the display. (Alarm priorities can be changed. See the Table 35: Alarm relay priorities.) Here are the messages that may appear:

Table 42: Fault message

 NOTE:

Data communication

The importance of individual alarms can be dened with a setting. The setting must be carried out in the group "Alarm destinations"

Ctrl. State/

Code

Operating status

Description

Push the info button for 3 seconds to see status. If there is a status code, it will be shown on the display. The individual status codes have the following meanings:

S0

Normal ctrl.

The controller is running normal control. There is no other control taking priority

S1

Hold after defrost

The controller is waiting for other controllers to terminate coordinated defrost

S2

Min ON timer

The compressor is restricted from starting until the minimum ON timer expires

S3

Min OFF timer

The compressor is restricted from stopping until the minimum OFF timer expires

S4

Drip o

The defrost has terminated and the controller is waiting for drip delay to expire, while the water is dripping o the evaporator

S10

Main switch OFF

The controller has been stopped because the parameter r12 Main switch has been set in OFF or Service position or the controller has been stopped via Main switch function on DI input

S11

Thermostat cut-out

The air temperature has reached the thermostat cut-out value

S12

Frost protection S4

The air o temperature is below the minimum S4 frost limit (r98, S4 frost protection)

S14

Defrost

The controller is running a defrost cycle

S15

Fan delay

The evaporator fans are waiting to start after a defrost cycle (d07, Fan start delay and d08, Fan start temperature)

S16

Forced closing

The injection valve has been forced closed via a signal on a digital input or from the system manager (compressor pack is restricted from starting)

S17

Door open

DI signal indicates that the cold room door is open

S18

Melt period

The controller has stopped refrigeration for a short while to turn ice crystals into water and thereby improve air ow through the evaporator

S19

Modulating temp. control

The air temperature is controlled close to the set point via a modulating temperature control

S20

Emergency control

(1)

The air temperature is controlled according to an emergency procedure due to sensor error (Pe, S2, S3 or S4)

S23

Adaptive superheat control

The superheat of the evaporator is optimized

S24

Start injection

The liquid injection into the evaporator has started

S25

Manual control

Main switch has been set in Service position for manual control of outputs

S26

No refrigerant selected

The refrigerant type has not been selected (parameter o30 Refrigerant)

S29

Case cleaning

A case cleaning operation has been initiated via parameter o46 Case cleaning mode or via a signal on a digital input or via the AK-CC55 Connect app

S30

Forced cooling

The thermostat has been overruled to run forced cooling via a signal on a digital input

S32

Power-up delay

The controller has just been powered up and the output control is waiting for the power-up delay to expire (parameter o01, Delay of outputs at power-up)

S33

Air heating

The air heater is energized in order to raise the air temperature (parameters r62, Air heater neutral zone and r63, Air heater start delay)

S45

Shut down controller

The control has been stopped due to a digital input signal or from the system manager

S48

Adaptive liquid control

The superheat control is running adaptive liquid control with reduced superheat for transcritical CO2 systems with ejectors. Signal is provided via digital input or from the system manager

AK-CC55 Compact

Operating status

Table 43: Operating status

(1)

Emergency control:

• If Pe or S2 sensor fails, the controller will operate with a safe opening degree based on normally registered opening degree during day and

• If Pe or S2 sensor fails, the controller will operate with a safe opening degree based on normally registered opening degree during day and night operation.

night operation.

• If S3 or S4 sensor fails, the thermostat will operate with a registered ON/OFF duty cycle during day and night operation.

Electrical data

Value

Supply voltage AC [V]

115 V / 230 V, 50/60 Hz

Voltage variation range max. [V]

85 – 265 V

Power consumption [VA]

5 VA

Power ON indicator

Green LED

Electrical cable dimensioning [mm2]

Max.1.5 mm2 multi-core cable

Sensor and measuring data

Value

Sensor S2

Pt 1000 AKS11

Sensor S3, S4, S5

Pt 1000 AKS11 PTC 1000 EKS111 NTC5K EKS211 NTC10K EKS221 sensor

(All 3 must be of the same type)

Temperature measuring accuracy

Pt1000: -60 – 120 °C. ±0.5 K PTC1000: -60 – 80 °C. ±0.5 K NTC5K: -40 – 80 °C. ±1.0 K NTC10K: -40 – 120 °C. ±1.0 K

Pt1000 sensor specication

±0.3 K at 0 °C ±0.005 K per degree

Pe measuring

AKS 32R Ratiometric pressure transmitter: 10-90%

Input and output relay

specications

Input/output

Description

Digital input

DI1 DI2

Signal from dry contact functions Requirements to contacts: Gold plating Cable length must be max. 15 m Use auxiliary relays when the cable is longer Open loop: 12 V Contact 3.5 mA

Solid state output

DO1 (for AKV coil)

115V / 230 V AC Max. 0.5 A (No overload protection!) Max. 1 x 20 W AKV for 115 V AC 2 x 20 W AKV for 230 V AC Note: 2 EC coils are not supported.

Relays

DO2 DO3 DO4

115 V / 230 V AC Load max.: CE. 8 (6)A UL. 8A res. 3FLA 18LRA Load min.: 1VA Inrush: DO2 DO3 TV-5 80A

Analogue output/ PWM

AO1

0 / 10 V Pulse Width Modulated (PWM) max. 15 mA. 0 – 10 V variable, max. 2 mA

AK-CC55 Compact

Product specication

Technical data

Electrical specications

Table 44: Electrical specications

Sensor and measuring data

Table 45: Sensor and measuring data

Input and output relay specications

Table 46: Input and output relay specications

 NOTE:

• DO2 to DO4 are 16 A relays.

• Max. load must be observed.

• DO2 / DO3 is recommended for load with high inrush current e.g. EC Fan and LED light.

• All relays are sealed for use with ammable refrigerant like Propane R290.

• Compliance with EN 60 335-2-89: 2010 Annex BB.

Danfoss

84B3239

Danfoss

84B3242

Function data

Value

Display

LED 3 digit

External display, AK-CC55 Compact

1 external display

External display connection

RJ12

Max. display cable length [m]

100 m

Data communication built-in

MODBUS

Clock battery backup power reserve

4 days

Mounting

DIN rail

Environmental conditions

Value

Ambient temperature range, operation

0 – 55 °C

Ambient temperature range, transport

-40 – 70 °C

Enclosure rating IP

IP20

Relative humidity range [%]

20 – 80%, non-condensing

Shocks/Vibrations

No shocks and vibrations allowed

AK-CC55 Compact

Function data

Table 47: Function data

Environmental conditions

Table 48: Environmental conditions

Dimensions

Measurements are in mm.

Figure 46: AK-CC55 Compact

Figure 47: AK-CC55 Set

Control

Certication

Mark

Country

Compact

EMC/LVD/RoHS

CEEUCompact

UL recognized

cURus

NAM (US and Canada)

Compact

ACMA (EMC)

RCM

Australia/New Zealand

Compact

LVE/EMC/RoHS

EAC

Russia, Kazakhstan, belarus

Compact

LVD/EMC/RoHS

UA

Ukraine

Display module

Certication

Mark

Country

AK-UI55 Bluetooth

REDCEEU

AK-UI55 Bluetooth

FCC

FCC ID

USA

AK-UI55 Bluetooth

IC (ISED)

IC ID

Canada

AK-UI55 Bluetooth

CMIIT

CMITT ID

China

AK-UI55 Bluetooth

ACMA (EMC/Wireless)

RCM

Australia

AK-UI55 Bluetooth

RSM (EMC/Wireless)

RCM

New Zealand

AK-UI55 Bluetooth

EMC/LVD/Wireless

UA

Ukraine

AK-UI55 Info

EMC/LVD

UA

Ukraine

AK-UI55 Info

ACMA (EMC)

RCM

Australia

AK-UI55 Info

RSM (EMC)

RCM

New Zealand

AK-UI55 Info

RoHS

EAC

Russia, Kazakhstan, belarus

AK-UI55 Set

EMC/LVD

UA

Ukraine

AK-UI55 Set

ACMA (EMC)

RCM

Australia

AK-UI55 Set

RSM (EMC)

RCM

New Zealand

AK-UI55 Set

RoHS

EAC

Russia, Kazakhstan, belarus

AK-CC55 Compact

Certicates, declarations, and approvals

The list contains all certicates, declarations, and approvals for this product type. Individual code number may have some or all of these approvals, and certain local approvals may not appear on the list.

Some approvals may change over time. You can check the most current status at danfoss.com or contact your local Danfoss representative if you have any questions.

Table 49: Controller

Table 50: Display module

Controllers/displays/option module:

CB certicate including all deviation according to IEC 60730-1 and 2-9

Relays:

Tested according to IEC 60079-15

AK-CC55 Compact

Statements for the AK-UI55 Bluetooth display

FCC COMPLIANCE STATEMENT

 CAUTION:

Changes or modications not expressly approved could void your authority to use this equipment This device complies with Part 15 of the FCC Rules. Operation to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

INDUSTRY CANADA STATEMENT

This device complies with Industry Canada license-exempt RSS standard(s). Operation is subject to the following two conditions: (1) this device may not cause interference, and (2) this device must accept any interference, including interference that may cause undesired operation of the device.

Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de licence. L'exploitation est autorisée aux deux conditions suivantes : (1) l'appareil ne doit pas produire de brouillage, et (2) l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d'en compromettre le fonctionnement.

Online support

Play Store

App Store

Danfoss oers a wide range of support along with our products, including digital product information, software, mobile apps, and expert guidance. See the possibilities below.

The Danfoss Product Store

The Danfoss Product Store is your one-stop shop for everything product related—no matter where you are in the world or what area of the cooling industry you work in. Get quick access to essential information like product specs, code numbers, technical documentation, certications, accessories, and more. Start browsing at store.danfoss.com.

Find technical documentation

Find the technical documentation you need to get your project up and running. Get direct access to our ocial collection of data sheets, certicates and declarations, manuals and guides, 3D models and drawings, case stories, brochures, and much more.

Start searching now at www.danfoss.com/en/service-and-support/documentation.

Danfoss Learning

Danfoss Learning is a free online learning platform. It features courses and materials specically designed to help engineers, installers, service technicians, and wholesalers better understand the products, applications, industry topics, and trends that will help you do your job better.

Create your Danfoss Learning account for free at www.danfoss.com/en/service-and-support/learning.

Get local information and support

Local Danfoss websites are the main sources for help and information about our company and products. Find product availability, get the latest regional news, or connect with a nearby expert—all in your own language.

Find your local Danfoss website here: www.danfoss.com/en/choose-region.

AK-CC55 Connect

Make service easy with the free AK-CC55 Connect app. Via a Danfoss Bluetooth display you can connect to an AK-CC55 case controller and get a visual overview of the display functions. The app ensures smooth interaction with a Danfoss AK-CC55 case controller in a user-friendly design.

Download the app here:

Danfoss can accept no responsibility for possible errors in catalogues, brochures and other printed material. Danfoss reserves the right to alter its products without notice. This also applies to products already on order provided that such alterations can be made without subsequential changes being necessary in specications already agreed. All trademarks in this material are property of the respective companies. Danfoss and the Danfoss logotype are trademarks of Danfoss A/S. All rights reserved.

Danfoss AK-CC55 Compact User guide

Specifications and Main Features

Frequently Asked Questions

User Manual

Contents

Introduction

Portfolio overview

Function overview

AK-CC55 Compact

Connectivity

Data communication

External display

Controller functionality

Functions

Liquid injection by use of AKV

Thermostatic expansion valve control

Temperature control

Temperature monitoring

Thermostat bands

Night setback of thermostat value

Appliance cleaning

Appliance shutdown

Defrost

Start of defrost

Stop of defrost

Compressor run during hot gas defrost

Fans

Defrost sequence

Real-time clock

Coordinated defrost

Melt function

Control of two compressors (only with custom set-up)

Rail heat

Light function

Night blind

Heating function (only with custom set-up)

Digital inputs

Forced closing

Door contact

Display

Override

Applications

AK-CC55 Compact connections and application options

Application set-ups and IO connections

AK-CC55 Compact connections

Data communication

AKV info

External solid state relay for rail heat

AKS 32R info

Coordinated defrost via cable connections

External display AK-UI55

Connections

Operation

Operation via data communication

Direct operation

Operation via AK-UI55 Set

Parameter groups when operating via display

Get a good start

AK-UI55 display menu (SW ver. 2.0x)

Thermostat

Alarm settings

Compressor

Defrost

Injection control

Fan control

Defrost schedule

Miscellaneous

Control

Service

Operation via AK-UI55 Bluetooth

AK-CC55 Connect menu (SW ver. 2.0x)

Start / Stop

Thermostat control

Alarm limits and delays

Injection control

Defrost control

Defrost schedules

Compressor

Fan control

Railheat control