Danfoss AK-CC 460 User Manual Download Page 17

Rail heat control

The rail heat can be controlled in several ways:

0: The function is not used

1: Pulse control is used with a timer function following the day/night operation (o41 and 

o42)

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.

o85

Railh. mode

Dew point value where the rail heat is minimum

This function is discussed earlier in the manual.

o86

DewP Min lim

Dew point value where the rail heat is maximum

This function is discussed earlier in the manual.

o87

DewP Max lim

Lowest permitted rail heat effect

Here the % part of the effect to be achieved when the dew point value is minimum.

o88

Rail Min ON%

Start of refrigeration when door is open

If the door has been left open, refrigeration must be started after a set time. That time can 

be set here. (DI config = 2)

o89

DoorInjStart

Alternative display

A reading can be displayed on the controller or on the display by pressing the lower 

button. This reading is set from the factory so that the defrosting stop temperature is 

displayed. 

A different setting will give the following reading:

1: (Defrost stop temperature = factory setting)

2: S6 temperature

o92

Displ menu 2

Display of temperature during normal operation

1: Air temperature. Weighted S3 + S4

2: Product temperature S6

o97

Disp. Ctrl.

Light and night blind definition

0: Light is switched off and night blind is open when the main switch is off

1: Light and night blind is independent of main switch.

o98

Light MS = Off

Configuration of the alarm relay

The alarm relay will be activated upon an alarm signal from the following groups:
1 - High temperature alarms
2 - Low temperature alarms
4 - Sensor error
8 - Digital input is activated for alarm
16 - Defrost alarms
32 - Miscellaneous
The groups that are to activate the alarm relay must be set by using a numerical value 
which is the sum of the groups that must be activated.
(E.g. a value of 5 will activate all high temperature alarms and all sensor errors. 0 will cancel 
the relay function)

P41

Al.Rel. Conf.

Fan pause while the night blinds are rolling down.

Here it is possible to set a pause time for the fans so that the night blinds can roll down 

into the correct position unobstructed.

P65

BlindFanStop

Service

Service

Temperature measured with S5 sensor

u09

S5 temp.

Status on DI1 input. on/1=closed

u10

DI1 status

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

u11

Defrost time

Temperature measured with S3 sensor

u12

S3 air temp

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

u13

Night Cond.

Temperature measured with S4 sensor

u16

S4 air temp

Thermostat temperature

u17

Ther. air

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

cutin

u18

Ther runtime

Read the temperature at the S6 sensor

u36

S6 temp

Status on DI2 input. on/1=closed

u37

DI2 status

Readout of the actual compressor capacity in %

u52

CompCap %

Air temperature. Weighted S3 +S4

u56

Display air

Measured temperature for alarm thermostat

u57

Alarm air

User Guide | Controller for SemiPlugin appliance, AK-CC 460

© Danfoss | DCS (vt) | 2019.12

BC230086440483en-000201 | 17

Summary of Contents for AK-CC 460

Page 1: ...User Guide Controller for SemiPlugin appliance AK CC 460 www danfoss com...

Page 2: ...iance The temperature of the evaporator is registered with the S5 sensor which can be used as a defrosting sensor In addition to the output for the compressors the controller has 5 relay outputs for d...

Page 3: ...ll continue until the temperature has reached the cut out value Then it will cut out When the temperature again reaches the middle of the differential compressor 1 will be cutin to the circuit again I...

Page 4: ...digital input Separate thermostat and alarm limits can be set for each thermo stat band also for the product sensor Night setback of thermostat value In refrigeration appliances there may be big load...

Page 5: ...methods Natural Here the fans are kept operating during the defrost Electric The heating element is activated Defrost sequence 1 Defrost 2 Waiting position after defrost 3 Drip off 4 Delay of fan Star...

Page 6: ...oup is in a waiting position refrigeration is again permitted in all the individual controllers Defrost on demand Based on refrigeration time When the aggregate refrigeration time has passed a fixed t...

Page 7: ...Pulse control can be accomplished in one of the following ways during the thermostat s cutout period cold room during night operation and during the thermostat s cutout pe riod appliance with night l...

Page 8: ...Main switch is set to off see o98 When the night blind rolls down the fans can be stopped so that the air circulation does not interrupt the positioning of the blind The desired stop time must be set...

Page 9: ...the display can advantageously be changed to a type with screw terminals I e the type EKA 163A or EKA 164A If connection of two displays is required one must be connected to the plug max 15 m and the...

Page 10: ...ust S4 Correction of signal from S3 Compensation possibility due to long sensor cable r10 Adjust S3 Start stop of refrigeration With this setting refrigeration can be started stopped or a manual overr...

Page 11: ...ediately after a defrost There will be change over to the normal time delay A03 when the temperature has dropped below the set upper alarm limit The time delay is set in minutes A12 Pulldown del Upper...

Page 12: ...c01 Min On time Min OFF time in minutes c02 Min Off time Time delay for couplings of two compressors Settings indicate the time that has to elapse from the first relay cuts in and until the next rela...

Page 13: ...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 tim...

Page 14: ...ill not provide heat 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 i...

Page 15: ...the night blinds 13 14 Not used 15 Case Shutdown when input is closed o02 DI 1 Config Definition takes place with the numerical value shown to the left 0 off DI state Measurement The DI input s presen...

Page 16: ...setting is selected to either 2 or 3 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 off 4 As 2 but i...

Page 17: ...is off 1 Light and night blind is independent of main switch o98 Light MS Off Configuration of the alarm relay The alarm relay will be activated upon an alarm signal from the following groups 1 High...

Page 18: ...2 u86 Ther band Status on input DI3 on 1 230 V u87 DI3 status Readout of the actual cutin value for the thermostat u90 Cutin temp Readout of the actual cut out value for the thermostat u91 Cutout temp...

Page 19: ...compressor is stopped it must remain stopped for at least x minutes S3 3 The evaporator drips off and waits for the time to run out S4 4 Refrigeration stopped by main switch Either with r12 or a DI in...

Page 20: ...igh S6 1 A14 Low temp S6 Temperature alarm Low S6 2 A15 DI1 alarm DI1 alarm 8 A16 DI2 alarm DI2 alarm 8 A45 Standby mode Standby position stopped refrigeration via r12 or DI input A59 Case clean Case...

Page 21: ...If there are several alarm codes they are found in a rolling stack Push the uppermost or lowermost button to scan the rolling stack Set temperature 1 Push the middle button until the temperature value...

Page 22: ...ure alarm after defrost A12 1 1 0 min 240 min 90 High alarm limit for thermostat 1 A13 1 1 50 C 50 C 8 Low alarm limit for thermostat 1 A14 1 1 50 C 50 C 30 High alarm limit for thermostat 2 A20 1 1 5...

Page 23: ...5 1 1 0 2 0 Period time for fan pulsation on time off time F06 1 1 1 min 30 min 5 On time in of period time F07 1 1 0 100 100 Real time clock Six start times for defrost Setting of hours 0 OFF t01 t06...

Page 24: ...s o67 1 1 0 Off 1 On 0 Off Rail heat control 0 not used 1 pulse control with timer function o41 and o42 2 pulse control with dew point function o85 1 1 0 2 0 Dew point value where the rail heat is min...

Page 25: ...rmostat temperature u17 1 1 Run time of thermostat cooling time in minutes u18 1 1 Temperature measured with S6 sensor product temperature u36 1 1 Status on DI2 output on 1 closed u37 1 1 Readout of t...

Page 26: ...nserted in the controller The module can be a LON RS485 DANBUSS or a MODBUS Terminal 51 screen Terminal 52 A A Terminal 53 B B For LON RS485 and gateway type AKA 245 the gateway must be version 6 20 o...

Page 27: ...Digital input signal Compressors safety circuit OK at 230V The signal must have a voltage of 0 230 V AC Data communication If data communication is used it is important that the installation of the da...

Page 28: ...nal for variable speed control Relays CE 250 V AC IBExU approved DO3 DO4 4 3 A DO2 DO5 DO6 DO7 4 3 A Environments 0 55 C During operations 40 70 C During transport 20 80 Rh not condensed No shock infl...

Page 29: ...ation 084B8016 EKA 175 Data communication module LON RS 485 084B8579 EKA 178B Data communication module MODBUS 084B8571 EKA 176 Data communication module DANBUSS Gateway 084B8583 EKA 176A Data communi...

Page 30: ...Danfoss DCS vt 2019 12 BC230086440483en 000201 30...

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