Danfoss AK-CC 450 User Manual
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Danfoss AK-CC 450 User Manual

Controller for appliance control
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User Guide
Controller for appliance control
AK-CC 450

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Summary of Contents for Danfoss AK-CC 450

  • Page 1 User Guide Controller for appliance control AK-CC 450...
  • Page 2 User Guide | Controller for appliance control, AK-CC 450 Contents Introduction ....................... 2 Operation ......................26 Operation ......................4 Menu survey .....................28 Applications .....................12 Connections .....................32 Survey of functions ..................15 Data ........................34 Ordering ......................35 Introduction Application Complete refrigeration appliance control with great flexibility to adapt to all types of refrigeration appliances and cold storage rooms.
  • Page 3 User Guide | Controller for appliance control, AK-CC 450 Applications Here is an overview of the controller’s usage options. A setting will configure input and outputs so that the controller’s operation interface is directed at the selected application. The current settings for the respective uses can be found on page...
  • Page 4 User Guide | Controller for appliance control, AK-CC 450 Operation Cooling Regulation can be performed on the basis of the following princi- ples: Direct expansion The temperature is controlled either through the starting/stop- ping of a compressor or through the opening/closing of a sole- noid valve in the liquid line.
  • Page 5 User Guide | Controller for appliance control, AK-CC 450 Thermostat bands Thermostat bands can be used beneficially for appliances where different product types are stored which require different tem- perature conditions. It is possible to change between the two different thermostat bands via a contact signal on a digital input.
  • Page 6 User Guide | Controller for appliance control, AK-CC 450 Defrost Depending on the application you may choose between the fol- lowing defrost methods: Natural: Here the fans are kept operating during the defrost Electric: The heating element is activated Hotgas:...
  • Page 7 User Guide | Controller for appliance control, AK-CC 450 Coordinated defrost Max. 10 There are two ways in which coordinated defrost can be arranged. Either with wire connections between the controllers or via data communication Wire connections The digital input DI2 is connected between the current controllers.
  • Page 8 User Guide | Controller for appliance control, AK-CC 450 Control of two compressors General: The two compressors must be of a type that can start up against a high pressure. The running compressor will continue until the temperature has reached the cutout value. Then it will cut out. When the tempera- ture again reaches the middle of the differential, a compressor will again be started.
  • Page 9 User Guide | Controller for appliance control, AK-CC 450 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 cutout period (cold room) - during night operation and during the thermostat’s cutout pe-...
  • Page 10 User Guide | Controller for appliance control, AK-CC 450 Digital inputs There are two digital inputs DI1 and DI2 with contact function and one digital input DI3 with high voltage signal. They can be used for the following functions: - Retransmission of contacts position via data communication...
  • Page 11 User Guide | Controller for appliance control, AK-CC 450 Data communication The controller has fixed built-in MODBUS data communication. If there is a requirement for a different form of data communication, a Lon RS 485 or DANBUSS module can be inserted in the controller.
  • Page 12 User Guide | Controller for appliance control, AK-CC 450 Applications S3 and S4 are temperature sensors. The application will determine whether either one or the other or both sensors are to be used. S3 is placed in the air flow before the evaporator. S4 after the evaporator.
  • Page 13 User Guide | Controller for appliance control, AK-CC 450 Application 5 Heat thermostat The heat thermostat is typically used if the temperature is to be controlled within narrower limits, e.g. for cutting rooms, etc. The heating thermostat can be set as a difference in relation to...
  • Page 14 User Guide | Controller for appliance control, AK-CC 450 Connection labels The controller is provided with labels from the factory indicating application 1. If you employ another use, labels are provided so that you can mount the relevant one. For application 2 to 5 and 9 it is only the lower label that needs to be mounted.
  • Page 15 User Guide | Controller for appliance control, AK-CC 450 Survey of functions Function Para- Parameter by operation via data com- meter munication Normal display Normally the temperature value from one of the two thermostat sensors S3 or S4 or a Display air (u56) mixture of the two measurements is displayed.
  • Page 16 User Guide | Controller for appliance control, AK-CC 450 Melt function MeltInterval Only for control of refrigeration (-5 to +10°C). The function ensures that the evaporator will not be blocked by frost. Here you set how often the function is to stop the refrigeration and hence transform the frost to water (or ice if there is too much frost).
  • Page 17 User Guide | Controller for appliance control, AK-CC 450 S6 temperature alarm delay Al. Delay S6 The alarm is activated if one of the relevant alarm limits A22, A23, A24 or A25 is exceeded. The time delay is set in minutes.
  • Page 18 User Guide | Controller for appliance control, AK-CC 450 Defrost method Def. method Here you set whether defrost is to be accomplished with electricity, gas, brine or (none). 0 = none During defrost the defrost relay will be cut in.
  • Page 19 User Guide | Controller for appliance control, AK-CC 450 Define rail heat during defrost: Railh. at def. 0: Off 1: On 2: Pulsing Defrost stop temperature at application 9 and thermostat band 2 DefStop Temp2 Max. defrost time at application 9 and thermostat band 2 MaxDefTime2 If you wish to see the temperature at the defrost sensor, push the controller’s lowermost...
  • Page 20 User Guide | Controller for appliance control, AK-CC 450 Clock: Date setting Clock: Month setting Clock: Year setting Miscellaneous Miscellaneous Delay of output signal after start-up DelayOfOutp. After start-up or a power failure the controller’s functions can be delayed so that overload- ing of the electricity supply network is avoided.
  • Page 21 User Guide | Controller for appliance control, AK-CC 450 Digital input signal - D2 DI2 config. The controller has a digital input 2 which can be used for one of the following functions: Off: The input is not used. 1) Status display of a contact function 2) Door function.
  • Page 22 User Guide | Controller for appliance control, AK-CC 450 Digital input signal - DI3 (high voltage input) DI3 config. The controller has a digital input 3 which can be used for one of the following functions: Off: The input is not used.
  • Page 23 User Guide | Controller for appliance control, AK-CC 450 Configuration of the alarm relay Al.Rel. Conf. The alarm relay will be activated upon an alarm signal from the following groups: 1 - High temperature alarms 2 - Low temperature alarms...
  • Page 24 User Guide | Controller for appliance control, AK-CC 450 Operating status (Measurement) The controller goes through some regulating situations where it is just waiting for the next Ctrl. state: point of the regulation. To make these “why is nothing happening” situations visible, you (Shown in all menu displays) can see an operating status on the display.
  • Page 25 User Guide | Controller for appliance control, AK-CC 450 Fault message In an error situation the LED’s on the front will flash and the alarm relay will be activated. If you push the top button in this situation you can see the alarm report in the display.
  • Page 26 User Guide | Controller for appliance control, AK-CC 450 Operation Controller/Display Get a good start 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 With the following procedure you can start regulation very quick- °F.
  • Page 27 User Guide | Controller for appliance control, AK-CC 450 Auxiliary schedule for settings (quick-setup) Case Room Defrost stop on Defrost stop Defrost stop on Defrost stop time on S5 time on S5 Preset settings (o62) Temperature (SP) 2°C -2°C -28°C 4°C...
  • Page 28 User Guide | Controller for appliance control, AK-CC 450 Menu survey SW = 1.8x Parameter EL-diagram page 12 or 13 Min.- Factory Actual Max.-value Function Code value setting setting Normal operation Temperature (setpoint) - - - -50°C 50°C Thermostat Differential 0.1 K...
  • Page 29 User Guide | Controller for appliance control, AK-CC 450 Continued code Min. Max. Fac. Actual Comp. off time when sensor fault 0 min 240 min Defrost : 0=Off, 1= EL, 2= Gas, 3 = Brine Defrost method 0/Off 3/bri 1/EL Defrost stop temperature 0°C...
  • Page 30 User Guide | Controller for appliance control, AK-CC 450 Continued Code Min. Max. Fac. Actual Network address (0= off ) On/Off switch (Service Pin message) 0/Off 1/On 0/Off IMPORTANT! o61 must be set prior to o04 (used at LON 485 only and DANBUSS)
  • Page 31 User Guide | Controller for appliance control, AK-CC 450 Continued Code Min. Max. Fac. Actual Configuration of alarm relay The alarm relay will be activated upon an alarm signal from the following groups: 1 - High temperature alarms 2 - Low temperature alarms...
  • Page 32 User Guide | Controller for appliance control, AK-CC 450 Connections Overview of outputs and Application DO6 DI1 DI2 DI3 AI1 AI2 AI3 AI4 AI5 AI6 • • • applications. • • • See also electrical diagrams earlier • • •...
  • Page 33 There is connection between terminal 15 and 16 when the fan Danfoss wil not be responsible for any goods, or plant compo- is on. nents, damaged as a result of the above defects. It is the installer's responsibility to check the installation thoroughly, and to fit the necessary safety devices.
  • Page 34 User Guide | Controller for appliance control, AK-CC 450 Data Supply voltage 230 V a.c. +10/-15 %. 5 VA, 50/60 Hz S6, S6B: Pt 1000 Sensors S3, S4, S5, , S5B: Pt 1000 or PTC 1000 ohm (All 4 must be of the same type) Measuring range -60 to +120°C...
  • Page 35 User Guide | Controller for appliance control, AK-CC 450 Ordering Type Function Code no. Case controller with MODBUS data communication 084B8022 AK-CC 450 Sensor connections are with screw terminals Data communication module EKA 175 084B8579 LON RS 485 EKA 178B...
  • Page 36 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 alternations can be made without subsequential changes being necessary in specifications already agreed.

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