Dixell XR06CX Manual⁚ A Comprehensive Guide
This comprehensive guide provides a detailed overview of the Dixell XR06CX, a microprocessor-based digital controller designed for medium or low temperature ventilated refrigeration units. It offers a step-by-step explanation of its functions, programming features, installation process, and troubleshooting tips to ensure optimal performance and efficient operation of your refrigeration system.
Introduction
Welcome to the Dixell XR06CX manual, your comprehensive guide to understanding and effectively utilizing this advanced digital controller for medium and low-temperature refrigeration applications. This manual is designed to provide you with a clear and detailed understanding of all the features and functionalities of the XR06CX, empowering you to optimize your refrigeration system for maximum efficiency and reliability.
The Dixell XR06CX is a sophisticated microprocessor-based controller that offers a range of features, including defrost control, fan management, and configurable digital input options. It is specifically designed for use in refrigeration units where precise temperature regulation and efficient operation are paramount. This manual covers everything you need to know, from the basic principles of operation to advanced programming techniques, troubleshooting tips, and installation guidelines.
Whether you are a seasoned refrigeration technician or a homeowner looking to understand your refrigeration system better, this manual will serve as your trusted companion. It provides comprehensive information, clear explanations, and step-by-step instructions to ensure a smooth and successful experience with the Dixell XR06CX.
General Description
The Dixell XR06CX is a compact yet powerful digital controller, measuring just 32 x 74 x 60 mm, designed to streamline your refrigeration system’s operation. At its core lies a microprocessor that enables the XR06CX to manage crucial functions like compressor control, fan operation, and defrost cycles, ensuring optimal performance and energy efficiency within your refrigeration unit.
This versatile controller features three relay outputs⁚ one for the compressor, one for the fan, and one for the defrost cycle. The defrost cycle can be configured for either electrical or reverse cycle (hot gas) defrost, providing flexibility for different refrigeration setups. Furthermore, the XR06CX is equipped with two NTC probe inputs⁚ the first for temperature control, and the second for monitoring evaporator temperature, which is essential for defrost termination and fan management. To enhance its functionality, the XR06CX also incorporates a configurable digital input, allowing for additional control options based on your specific needs.
The XR06CX’s user-friendly design includes a HOTKEY feature, simplifying the programming process and allowing for quick and intuitive adjustments. The HOTKEY enables you to navigate through the controller’s menu and modify parameters with ease, ensuring that even complex settings can be adjusted efficiently. The XR06CX is a versatile and reliable controller designed to provide dependable control and optimization for your refrigeration system.
Regulation and Defrost Modes
The XR06CX employs a precise temperature regulation system based on the readings from the thermostat probe. The controller maintains a positive differential from the set point, meaning that the compressor will start when the temperature reaches the set point plus the differential and will shut off when the temperature drops back to the set point. In situations where the thermostat probe malfunctions, the compressor’s start and stop cycles are controlled by predefined parameters, ensuring reliable operation even in the event of a probe failure.
The XR06CX offers two distinct defrost modes, selectable through the “td” parameter⁚ timed defrost and evaporator probe-controlled defrost. Timed defrost initiates defrost cycles at predetermined intervals, while evaporator probe-controlled defrost utilizes the temperature readings from the evaporator probe to trigger defrost cycles, providing more precise control based on actual ice formation. The controller’s defrost settings allow you to customize the defrost cycle interval (“id”), the maximum defrost duration (“Md”), and the dripping time (“dt”) after defrost. The “dt0” parameter enables you to disable the dripping time if necessary.
The XR06CX’s defrost management system ensures efficient frost removal, minimizing energy consumption and maximizing the performance of your refrigeration unit. By selecting the appropriate defrost mode and configuring the related parameters, you can fine-tune the defrost process to suit your specific application and optimize the overall efficiency of your refrigeration system.
Fan Control
The XR06CX features a sophisticated fan control system that allows for precise management of airflow within the refrigeration unit. The “FC” parameter provides the user with options to select the desired fan operating mode. This parameter enables you to configure the fan to operate continuously, only during the compressor’s ON cycle, or only during the defrost cycle. The “Fd” parameter allows you to set a timed fan delay after defrost to allow for adequate drip time, ensuring proper drainage and preventing potential water accumulation within the unit.
The controller also incorporates an intelligent feature that automatically adjusts fan operation based on the evaporator temperature. The “FS” parameter allows you to set a temperature threshold, above which the fans will be switched off. This feature ensures that air circulation is only activated when necessary, minimizing energy consumption and maximizing the efficiency of the refrigeration system. By intelligently controlling the fans based on the evaporator temperature, the XR06CX optimizes airflow and ensures efficient cooling performance.
The XR06CX’s fan control system provides a high level of flexibility and control, allowing you to configure the fan operation to best suit your specific application. This tailored approach to fan management ensures optimal airflow, efficient cooling, and reduced energy consumption, contributing to the overall efficiency and reliability of your refrigeration system;
Digital Input Functions
The XR06CX is equipped with a versatile digital input, allowing for enhanced functionality and integration with external devices or systems. This input can be programmed to perform various functions, depending on the chosen configuration. The “i1F” parameter provides a range of configurable options, enabling the user to tailor the digital input to specific needs. One common application is to utilize the digital input as a door switch, denoted by “iFdo.” When configured as a door switch, the digital input monitors the status of the door and triggers corresponding actions.
The “dC” parameter determines the behavior of the compressor and fan outputs based on the door status. It allows you to choose between several options⁚ “no” for normal operation, “Fn” to turn off the fan, “CP” to turn off the compressor, and “FC” to turn off both the compressor and the fan. This feature enhances system security and energy efficiency, as it automatically adjusts the operation based on the door’s open or closed state. By integrating with external devices or systems through its versatile digital input, the XR06CX offers expanded functionality and control for your refrigeration system.
Programming and Navigation
The XR06CX features a user-friendly interface for programming and navigation, allowing for easy configuration and control of the unit’s various settings. The instrument utilizes a clear and intuitive display, guiding the user through the various parameters and options. With the “HOTKEY” feature, programming becomes quick and straightforward. To access the programming mode, simply press and hold the “DEF” key for more than 2 seconds. The display will prompt you with various options and parameters. To modify a parameter’s value, use the “o” and “i” keys to increase or decrease the displayed value. Confirmation of the new value is achieved by pressing the “SET” key.
The “SET” key also acts as an exit button for the programming mode. Alternatively, you can simply wait 15 seconds without pressing any keys to automatically exit the programming mode. The unit includes a hidden menu, accessible by pressing and holding the “o” and “i” keys for more than 3 seconds. This hidden menu provides access to all the parameters of the instrument. Navigation within the hidden menu is similar to the main programming mode, using the “o” and “i” keys to browse through parameters. The “SET” key serves as an exit button for the hidden menu as well.
Installation and Wiring
The XR06CX is designed for panel mounting, requiring a 71x29mm cut-out in the panel. The unit is secured using the provided special bracket. Ensure the installation location is free from excessive vibrations, corrosive gases, dirt, and humidity. Allow for adequate air circulation around the cooling holes of the unit to prevent overheating. The XR06CX comes equipped with a screw terminal block for connecting cables up to 2.5 mm². Before connecting any cables, carefully verify that the power supply meets the instrument’s requirements. Always maintain a clear separation between the probe cables, power supply cables, output connections, and power connections to prevent interference and ensure safe operation.
For heavier loads exceeding the maximum current allowed on each relay, it is recommended to use an external relay. The probes should be mounted with the bulb pointing upwards to prevent potential damage from liquid infiltration. The thermostat probe should be positioned away from any air streams to ensure accurate measurement of the average room temperature. The defrost termination probe should be placed within the evaporator fins, ideally in the coldest area where ice formation is most prevalent. This placement minimizes the risk of premature defrost termination, as it ensures the probe is exposed to the coldest point and not influenced by any nearby heaters or warmer areas during the defrost cycle.
Troubleshooting and Alarms
The XR06CX features a comprehensive alarm system to alert you to potential issues and aid in troubleshooting. The “Er” message indicates a failed programming attempt. If this occurs, press the “o” key again to restart the upload process or remove the Hot key to abort the operation. Probe alarms “P1” and “P2” are activated a few seconds after a fault is detected in the corresponding probe. They automatically deactivate once the probe resumes normal operation. Before replacing a probe, carefully inspect the connections to rule out any loose wiring. Temperature alarms “HA” and “LA” automatically cease when the temperature returns to normal values.
Alarms “EA” and “CA” (with iFbL) are reset as soon as the digital input is disabled. The XR06CX also provides a detailed description of the alarm message that is displayed, allowing for quick identification of the issue. For instance, the “dA” message indicates a door open alarm, while the “EA” message signifies an external alarm. Understanding these messages helps streamline troubleshooting efforts. Refer to the manual’s troubleshooting section for specific solutions based on the displayed alarm message. Additionally, the manual provides information on the different configurations of the digital input, the functions of the outputs, and the meaning of various parameter codes. This comprehensive guide helps you effectively diagnose and resolve any problems encountered with the XR06CX.
Technical Specifications
The Dixell XR06CX boasts a compact design, measuring 32 x 74 mm in frontal dimensions and 60 mm in depth. It’s designed for panel mounting and requires a 71 x 29 mm cutout for installation. The XR06CX utilizes a screw terminal block for wiring, accommodating cables with a cross-section of up to 2.5 mm². The power supply requirements vary depending on the model, with options for 230Vac 10, 50/60Hz or 110Vac 10, 50/60Hz. The display features two digits with bright red LEDs, measuring 14.2 mm in height. The XR06CX incorporates a free voltage contact for its digital input.
The XR06CX features three relay outputs⁚ one for the compressor, one for the defrost, and one for the fan. The compressor relay is rated at SPST 8(3) A, 250Vac for smaller systems and can be upgraded to SPST 16(6)A 250Vac or 20(8)A 250Vac for higher capacity systems. The defrost relay is a SPDT type rated at 8(3) A, 250Vac. The fan relay is a SPST type with a rating of 8(3) A, 250Vac for standard applications and a reduced rating of 5(2) A for specific fan types. The XR06CX’s comprehensive technical specifications provide crucial information for ensuring compatibility with your refrigeration system and selecting the appropriate model based on your specific requirements.