AKO -16526 User Manual
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AKO -16526 User Manual

Temperature and electronic expansion controller for cold room store
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351652602 Ed. 03
AKO-16526
Temperature and electronic expansion controller for cold
room store
User manual

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Summary of Contents for AKO AKO-16526

  • Page 1 351652602 Ed. 03 AKO-16526 Temperature and electronic expansion controller for cold room store User manual...

  • Page 2: Table Of Contents

    Only qualified personnel may install the product or provide technical support. This product has been developed for use in the applications described in the manual. AKO Electromecánica does not guarantee its operation in any use not foreseen in this document and accepts no liability in the case of damage of any type which may result from incorrect use, config- uration, installation or commissioning.

  • Page 3: Warnings

    -From -40°C to +20°C, if the NTC sensor is extended to 1000m with at least a 0.5mm cable, the maximum deviation will be 0.25°C (cable for sensor extension ref. AKO-15586. Earth the cable mesh at one end only). -The product should be installed in a place protected from vibrations, water and corrosive gases, where the ambient temperature does not exceed the value indicated in the technical data.

  • Page 4: Description

    351652602 Ed. 03 Description Temperature controller with output for electronic expansion valve regulation and evaporator fan speed control. In addition to regulating the cooling of the cold room, the controller can be configured to control superheating and regulate the speed of the evaporator fans using an inverter or electronic fans. The different options are: Temperature Control + Thermostatic Expansion Valve THERMOSTATIC...
  • Page 5 351652602 Ed. 03 Temperature control + EEV controlled by PWM + Evaporator fans regulated* VALVE COOL FREQUENCY EVAPORATOR CONVERTER Reg (4-20 mA / 0-10 V) ON/OFF AN OUT CONDENSER AUX 1 LIQUID CONTAINER COMPRESSOR PARÁMETROS Temperature control + Stepper EEV ** Tipo de válvula (u00): Válvula PWM (1) Regulación ventiladores (F10): Variador (1) Sondas conectadas (I00): Temp.
  • Page 6 351652602 Ed. 03 1: Display; 2: Keypad Constant: Stand-By mode activated. Regulation Constant: compressor active. is paused. Flashing: the compressor should be active but a Flashing: controlled stop process for the regu- delay or protection is preventing this. lation in progress. Defrosting active.
  • Page 7 351652602 Ed. 03 Keypad Press and hold for 3 seconds to activate/deactivate the Stand-By mode. In this mode, regulation is paused and the m icon is displayed. In the programming menu, this key exits the parameter without saving changes and returns to the previous level, or exits programming.

  • Page 8: Installation

    351652602 Ed. 03 Installation -Remove the bezels (1). -Make a 1/4 turn of the screws (2) anti-clock- wise and open the door (3). -Install the necessary glands (4/5) by drilling holes in the points indicated on the box. -Mark and make the holes in the wall with the aid of the template included.

  • Page 9: Wiring

    351652602 Ed. 03 Wiring Always disconnect the power supply to do the wiring. The sensors and their cables must NEVER be installed in a conduit together with power, control or power supply cables. For disconnection, the power supply circuit must be equipped with at least a 2 A, 230 V switch, located near the device.

  • Page 10: Initial Configuration

    351652602 Ed. 03 Initial configuration The AKO-16526 controller can be adapted to different types of installation according to the different options chosen in the set-up wizard. Before completing the wiring, make sure you are familiar with the details of the installation in order to configure it correctly.

  • Page 11: Assistant

    351652602 Ed. 03 Superheating SET POINT Enter the desired optimum superheating value. Assistant The first time the unit receives the power supply, it will enter into ASSISTANT mode. The display will show the messageIn{flashing at 0. The buttons  and  change the value, the SET button accepts ...
  • Page 12  /  / SET 351652602 Ed. 03  /  / SET  /  / SET  /  / SET  /  / SET Step 3:  /  / SET Define the type of fan control. ...

  • Page 13: Operation

    351652602 Ed. 03  /  / SET Step 11: Select the superheating set point (See page 16). Step 12: Set all other parameters to default?  /  / SET dFP=0 No, the other parameters do not need to be changed dFP=1 Yes, set all other parameters to their default values This option only appears if this is not the first time the set-up wizard has been run.
  • Page 14 351652602 Ed. 03 Severe external alarm activated (by digital input) (See page 24). Activates the alarm relay and the audible alarm. Defrost time-out alert. The time set in d1 has been exceeded (See page 26). Activates the alarm relay and the audible alarm. HACCP alarm.

  • Page 15: Cold Regulation

    351652602 Ed. 03 Cold regulation Solenoid control (COOL relay) If u00=0 is selected in the wizard, coolant production is regulated by opening/closing the solenoid valve, which sends liquid to the thermostatic expansion valve. If u00=1 is selected in the wizard, coolant production is regulated by controlling the opening and closing of the expansion valve (PWM control).
  • Page 16 A low superheat allows for better evaporator efficiency, but too low a value may cause liquid to enter the compres- sors because the liquid in the evaporator is not completely evaporated. The AKO-16526 provides stable superheat regulation and a fast response to pressure or load fluctuations, thus ensuring a high level of system safety.
  • Page 17 351652602 Ed. 03 Pump down function This function foresees problems in the compressor caused by movements of coolant, using a stop/start technique for the installation, controlled via the liquid solenoid, the low pressure switch and the compressor itself. This function is only available for InI 2, 5 and 7 and requires the connection of a low pressure switch in digital input 1 (I10=7).
  • Page 18 “Set Point change” (I10 or I20=4). Activation through this method cancels any other activation and can only be deactivated using the same method. By means of the AKONet application. This requires the device to be connected to a Modbus network (See page 36). By means of the CAMM module and the AKO CAMM tool application. EXAMPLE: Configuration...

  • Page 19: Compressor Protection Timing

    351652602 Ed. 03 Compressor protection timing Parameter C4 allows for selection of the type of timing to be applied to protect the compressor. These delays prevent continuous compressor starts and stops. These timings affect the COOL and AUX 1 relays (if o00=1). OFF-ON (C4=0): minimum time in OFF mode before each start-up.

  • Page 20: Defrost

    351652602 Ed. 03 Defrost Types of defrost There are 5 possible defrost types, depending on the option selected in the wizard (Inl): Electric (InI=1, 2 and 3) (d7=0) Defrost is performed through electrical resistors, supplying the evaporator with heat. The operation of fans in this mode depends on parameter F3;...
  • Page 21 351652602 Ed. 03 Defrost control Max. DEFROST DRIP TIME DEFROST FAN START-UP COLD REGULATION COLD REGULATION DELAY “DEF” MESSAGE Defrost start Defrost will start if: • The time programmed in parameter d0 has elapsed since the start of the last defrost. •...
  • Page 22 351652602 Ed. 03 Remote defrost This function allows defrost of the unit to be activated using an external key, connecting it to one of the digital inputs that must be configured as remote defrost (I10 or I20=5). Defrost locking This prevents defrost starting at unusual points by means of an external switch, which may be useful for ensuring that the installation's load does not excessively increase, exceeding the permitted limits.

  • Page 23: Fan Control

    351652602 Ed. 03 Fan control Fans are controlled through sensor 2 (evaporator), and parameters F0 (stop temperature) and F1 (sensor differential). If sensor S2 is not connected or an error in the sensor (E2) is detected, the fans continuously operate without taking into account parameters F0 and F1, but taking the remaining parameters (F2 to F4) into account.

  • Page 24: Alarms

    351652602 Ed. 03 Alarms When the criteria programmed in the parameters are met, the device warns the user through an on-screen message, activation of a relay (only 5-relay devices if o10=1 or 4-relay devices if o00=4) and an audible alarm. Maximum/minimum temperature alarm It shows the message “AK”...
  • Page 25 351652602 Ed. 03 HACCP alarm The alarm is activated should situations be detected which could endanger the integrity of the products stored in the cold room. If the temperature of the cold room is higher than that defined in parameter h1 for a length of time exceeding that defined in parameter h2, the alarm activates, displaying the message HCP on screen.

  • Page 26: Alerts

    351652602 Ed. 03 Alarm delays These delays prevent certain alarms from being shown, to allow the installation to recover its normal operation after certain events. • Delays in start-up (A3): this delays the activation of the temperature alarms upon receiving power (at start- up or after a power supply failure) or when exiting Stand-by mode.

  • Page 27: Password

    351652602 Ed. 03 Password Allows the configuration of the equipment to be protected by a 2-digit code. If it is active a code is requested when you try to access the programming menu. This menu cannot be accessed if a wrong value is entered. The code is set via the PAS parameter. Parameter b10 defines the operation of this code.

  • Page 28: Configuration

    351652602 Ed. 03 Configuration Condensed programming menu This allows for the most-used parameters to be quickly configured. Press the SET key for 3 seconds to access it. Condensed programming menu OUT OF PROGRAMMING PROGRAMMING 20 sec. Temperature indication Parameters Values Change 3 sec.

  • Page 29: Extended Programming Menu

    351652602 Ed. 03 Extended programming menu Use the extended programming menu to configure all of the unit’s parameters in order to adapt it to your installation requirements. Press the SET key for 6 seconds to access it. IMPORTANT: if the password function has been configured as a keypad lock (b10=2), or as an access to parameters block (b10=1), you will be requested to enter the password programmed in PAS when attempting to access either of the two functions.

  • Page 30: Parameters

    351652602 Ed. 03 Parameters Regulation and control Description Values Min. Def. Max. SP Temperature setting (Set Point) ºC/ºF -50 0.0 99 C0 Sensor 1 calibration (Offset) ºC/ºF -20.0 0.0 20.0 C1 Sensor 1 differential (Hysteresis) ºC/ºF 0.1 2.0 20.0 Set point top locking ºC/ºF (it cannot be set above this value) Set point bottom locking...
  • Page 31 351652602 Ed. 03 Defrost Description Values Min. Def. Max. d0 Defrost frequency (time between 2 starts) d1 Maximum defrost duration (0=defrost deactivated) min. Type of message during the defrost: 0=sign of the real temperature; 1=sign of the temperature at the start of the defrost; 2=sample of the dEF message Maximum message duration min.
  • Page 32 351652602 Ed. 03 Expansion valve Description Values Min. Def. Max. Valve type: 0=solenoid + EV thermostat 1= PWM-type EEV 2=Stepper-type EEV SH Superheating set point Refrigerant gas type: 0= R-404A, 1= R-134A, 2= R-407A, 3= R-407F, 4= R-410A, 5= R-450A, 6= R-513A, 7= R-744, 8= R-449A, 9= R-290, 10= R-32, 11= R-448A, 12=R1234ze, 13=R23, 14=R717, 15=R407C, 16=R1234yf, 17=R22, 18=R454C, 19=R455A, 20=R507A, 21=R515B, 22=R452A, 23=R452B, 24=R454A PWM cycle time...
  • Page 33 351652602 Ed. 03 Alarms Description Values Min. Def. Max. A0 Configuration of the temperature alarms 0=relative to SP 1=absolute A1 Alarm for maximum in sensor 1 (it must be higher than the SP) ºC/ºF A2 99.0 99.0 A2 Alarm for minimum in sensor 1 (it must be lower than the SP) ºC/ºF -50 -50 A1 Delay of temperature alarms in the start-up...
  • Page 34 351652602 Ed. 03 Basic configuration Description Values Min. Def. Max. b00 Delay of all functions on receiving power supply min. b01 Cold room light timing min. Password function 0=inactive 1=parameter access lock 2=keypad lock Password b20 MODBUS address Communication speed: 0=9600 bps 1=19200 bps 2=38400 bps 3=57600 bps b22 Audible alarm enabled 0=no 1=yes Lower display function: 1=sensor S2, 2=sensor S3, 3=sensor S4, 4=sensor...
  • Page 35 351652602 Ed. 03 Inputs and outputs Description Values Min. Def. Max. I60 Pressure units: 0=bar, 1=Psi Pressure sensor type (S6): 0=deactivated, 1=4-20 mA, 2=0-5 V, 3=0.5-4.5 V, 4=0-10 V, 5=1-5 V I62 Minimum pressure sensor value (4 mA, 0 V, 0.5 V, 1 V) I63 Maximum pressure sensor value (20 mA, 5 V, 4.5 V, 10 V) Pressure sensor calibration (S2) AUX 1 relay configuration: 0=deactivated, 1=compressor/crankcase resistance,...

  • Page 36: Connectivity

    Once modified, the old address indicated on the plate will not be valid. AKO-5012 AKO-80039 AKO-80039 Tr-: Yellow RS-485 >25 ** Tr+: Orange GND: Black CAMRegis AKOGAS AKOControl* AKOALARM SECURE AKOControl* AKOCORE CONTROL Terminating resistors are not required. *AKO controller with communication **AKO-80024 Use if connecting more than 25 units...

  • Page 37: Technical Specifications

    Resolution, adjustment and differential ......................0.1ºC Thermometric accuracy ..........................±1ºC Tolerance of the NTC probe at 25ºC ......................±0.4ºC Input for NTC probe ..........................AKO-14901 Working ambient temperature ......................-10ºC to 50ºC Ambient storage temperature ......................-30ºC to 60ºC Protection degree ............................IP 65 Installation category ......................
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  • Page 40 AKO ELECTROMECÁNICA, S.A.L. Avda. Roquetes, 30-38 08812 • Sant Pere de Ribes. Barcelona • Spain www.ako.com We reserve the right to supply materials slightly different to those described in our data sheets. Updated information on our website.

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