AKO D14112, D14123-2, D14212, D14223, D14312, D14323 Temperature Controller User Manual

1 - Important Notes

Safe operation of the device is guaranteed only by following the instructions in this user manual. For proper operation, use only sensors supplied by AKO. Install the device in an environment free from vibrations, water, and aggressive gases, where the ambient temperature is within the specified range. For accurate measurements, place the sensor in an environment free from heat sources that could interfere with it. The power supply should be provided through a disconnecting switch with a rating of 2A, 230V, located in the immediate vicinity of the device, using H05VV-F or H05V type wiring. The minimum wire cross-section is 1mm². The minimum wire cross-section for the switch output is 2.5 mm². When extending the NTC sensor wires with a minimum cross-section of 0.5 mm², up to 1,000m, the system's error is less than 0.25°C within the temperature range of -40°C to +20°C.

2 - Installation

Installation instructions are provided with diagrams showing the mounting of the device and wiring connections for different models (AKO-D14112, AKO-D14212, AKO-D14312, AKO-D14123-2, AKO-D14223, AKO-D14323). The diagrams illustrate connections for cooling (HŰTÉS), heating (FŰTÉS), oil pan (OLAJTEKNŐ F.), auxiliary (AUX.), and external (KIEG.) functions, with voltage specifications (12V, 24V, 230V) and terminal designations.

3 - Wiring Diagram

Wiring diagrams are provided for various AKO models, illustrating the connections for power supply, sensors, and output relays for cooling, heating, auxiliary, and external functions. The diagrams specify voltage requirements (12V, 24V, 230V) and terminal assignments. For example, AKO-D14112 is shown with connections for cooling (P0=0) and heating (P0=1) modes, with terminals for sensors, power, and auxiliary outputs.

4 - Operation

The operation section details how to use the device's buttons (UP, DOWN, ESC, SET) for navigating menus, adjusting parameters, and initiating functions like defrosting and quick freezing. The display shows various statuses, including cooling, heating, fan operation, and auxiliary relay status. The UP button is used to scroll through menus and increase parameter values. The DOWN button is used to start/stop defrosting and activate standby mode. The ESC button is used to exit menus without saving or to go up one menu level. The SET button is used to confirm parameter values, enter programming menus, and modify setpoints.

Cooling (P0=0) and Heating (P0=1)

The display indicates the operating mode. The UP button scrolls through menus and increases parameter values. The DOWN button initiates or stops the defrosting process and activates standby mode. The ESC button exits menus or goes up one level. The SET button confirms settings or enters programming.

Defrosting (LE) Button

Pressing and holding the DOWN button for 5 seconds starts or stops the defrosting process. Pressing and holding the DOWN button for 5 seconds activates standby mode; pressing for 2 seconds returns to normal operation. In standby mode, the device only displays information and does not perform regulation.

ESC Button

Pressing and holding the ESC button for 5 seconds initiates the quick freeze (rapid cooling) mode. Pressing ESC without holding exits the programming menu without saving, moves up one menu level, or exits to the main menu.

SET Button

Pressing and holding the SET button for 5 seconds allows modification of the setpoint (SP). Pressing and holding for 10 seconds enters the programming menu. During programming, pressing SET enters the selected menu item or confirms the set parameter value.

4.1 - Reaching and Programming the Setpoint

The process involves displaying the temperature, pressing the SET button to adjust the setpoint, and confirming the value. For programming, press and hold the SET button to enter the parameter menu, navigate using UP/DOWN, select parameters, adjust values, and confirm with SET.

5 - Initial Startup

Upon applying power, the device enters a wizard mode. Use the UP and DOWN buttons to select the most suitable setting for your application and press SET. The wizard automatically sets parameter values based on the selected application (e.g., General, Frozen Storage, Fruits and Vegetables, Fresh Fish, Beverage Cooler, Refrigerated Beverage, Climate Control, Heating). Refer to the 'Application-Specific Default Parameter Settings' table for details.

6 - Parameter Table and Status Messages

This section provides a comprehensive table of parameters, their descriptions, units of measurement, and default values. It covers settings for temperature adjustment, calibration, hysteresis, setpoint limits, compressor protection, defrosting control, fan control, and various input/output configurations. Status messages are also explained, indicating conditions like sensor errors, defrosting in progress, and alarm states.

Parameter Table

The table lists parameters from level 1 to level 3, including 'S' for Setpoint, 'P' for parameters, 'C' for calibration/configuration, 'd' for defrosting, 'F' for fan control, 'A' for alarms, and 'L' for access code. Each parameter has a description, unit, minimum, default, and maximum value.

Status Messages

Various status indicators are explained, such as 'D' for defrosting in progress, 'E' for sensor 1 error, 'H' for high-temperature alarm, 'L' for low-temperature alarm, and 'A' for external or collective alarm.

7 - Technical Data

This section provides the technical specifications for the AKO temperature controllers. It includes details on power supply (12/24VAC, 230V±10%), communication protocols (Modbus RTU RS485), input types (NTC/PTC), output relay ratings (16A, 6A, 8A), sensor types, operating temperature ranges, enclosure protection (IP65), dimensions, and compliance with standards like UNE-EN 60730-1.

Power Supply

Models are available for 12/24VAC and 230V±10% power supplies.

Communication

The devices support Modbus RTU RS485 communication.

Inputs

The controllers feature NTC/PTC inputs and digital inputs.

Outputs

Output relays are rated for up to 16A, with specific ratings for fan and auxiliary outputs.

Sensors

Both NTC and PTC sensors are supported, with specified measurement ranges.

Operating Environment

The devices are designed for operation within a temperature range of -10°C to +50°C with relative humidity below 90%.

Enclosure and Mounting

The front panel has IP65 protection. Mounting is typically flush-mount or clip-on, with specific cutout dimensions provided.

Dimensions

Overall dimensions and cutout dimensions are specified for panel mounting.

Compliance

The devices comply with UNE-EN 60730-1 standards for automatic electrical controls, featuring double insulation for safety.