Refrigeration Controller for HT/LT AT2-5 Series

Product Overview

The AT2-5 Series Refrigeration Controller is designed to meet the demanding requirements of high or low temperature upright cabinets, counters, cold stores, plug-in display cases, control panels, and heated cabinets. This versatile controller ensures optimal performance, whether for refrigerating or heating applications, making it an essential component for various commercial refrigeration setups.

Main Features

• Selectable Refrigerating or Heating Control: The AT2-5 controller offers flexibility by allowing users to choose between refrigerating or heating modes, depending on their specific needs.
• Mains Power Supply: Operates efficiently on standard mains power supply, ensuring reliable performance.
• Direct Compressor Control: Equipped with a high power 16(5)A output, the controller can directly manage the compressor, providing robust control over refrigeration processes.
• Configurable Auxiliary Output: The auxiliary output is highly versatile, with six different operating modes available, making the controller adaptable to a wide range of applications.
• Sensor Compatibility: Compatible with both NTC10K and PTC input sensors, offering users flexibility in sensor selection based on their requirements.
• Defrost Options: Supports various defrost methods including electrical, off-cycle, or hot gas defrost, ensuring that the refrigeration system remains efficient and frost-free.
• Alarms: Built-in alarms for temperature and door open conditions, enhancing safety and system integrity.
• Optional Light Control Button: An optional feature that allows for additional control, such as turning lights on or off, adding convenience to the system.
• Connectivity: The controller is compatible with LAE supervisory systems, enabling seamless integration into broader system architectures.
• UL Approval: The product is UL approved, meeting high safety and performance standards.

Technical Specifications

The AT2-5 Series Refrigeration Controller is engineered to deliver precise control and reliability, with the following specifications:

• Control Range: -50°C to 120°C
• Resolution: 0.1°C / 1°C, with an option to display in Fahrenheit
• Accuracy:

• NTC10K: ±0.3°C (within -40°C to 70°C)

• PTC1000: ±0.5°C (within -50°C to 120°C)

• Sensor Type: Selectable NTC10K (standard model SN4B20P1/P2) or PTC1000
• Power Supply: 230V~ ±10%, 50-60Hz, 3W
• Front Protection: IP55 rating, providing protection against dust and low-pressure water jets
• Panel Cut-out Dimensions: 71 x 29 mm (Width x Height)
• Ambient Operating Temperature: -10°C to 50°C

Input and Output Capabilities

The AT2-5 Series controller is designed with multiple inputs and outputs to ensure comprehensive control over the refrigeration system:

• Inputs:

• Thermostat

• Evaporator

• Door Switch

• Outputs:

• Thermostat Control

• Evaporator Fans Control

• Auxiliary Output

Model Variations

The AT2-5 Series offers several model variations to suit different needs:

• BS4E-G: The generic model, suitable for most applications.
• BS4E-AL: This model includes a light button for additional control.
• BS4E-BG: An advanced model with additional features for more complex setups.

Additional options include models with removable screw terminal blocks, an integrated alarm buzzer, versions with a 110V power supply, and an optional gasket for enhanced protection between the bezel and metal panel. Serial port options include TTL and RS-485, providing robust connectivity options.

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