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Need help?Do you have a question about the Emerson dixell XR60CX and is the answer not in the manual?
Essential guidance for users to read the manual before operating the instrument.
Crucial safety measures to follow during installation and operation of the controller.
Details on how the compressor is regulated based on temperature setpoints and differentials.
Explanation of available defrost modes, intervals, and termination methods.
Configuration options for evaporator fan operation modes, including timed and continuous cycles.
Description of each LED indicator and its corresponding function during operation.
Instructions on how to display the lowest recorded temperature.
Instructions on how to display the highest recorded temperature.
Procedure to reset the stored maximum and minimum temperature values.
How to display and modify the target temperature setpoint.
Procedure for manually initiating a defrost cycle.
Steps for changing parameter values in the standard and hidden menus.
How to enable or disable the front panel keyboard to prevent accidental changes.
Description of the continuous cycle feature for compressor operation.
How to switch the instrument on and off using the dedicated key.
Parameters related to temperature regulation, setpoints, and differentials.
Settings for display units, resolution, and probe visualization.
Configuration options for defrost type, termination, intervals, and delays.
Settings controlling evaporator fan operation modes and timing.
Configuration for temperature alarms, differentials, and delays.
Settings for digital input polarity and functional configuration (door, alarm, defrost).
How alarms recover and the meaning of various alarm messages displayed.
Meaning of additional status messages like 'Pon' and 'POF'.
Connecting the controller to monitoring systems via TTL serial line.
Information on connecting an optional X-REP module.
Instructions for programming and using the Hot Key for data upload/download.
Guidelines for panel mounting the XR60CX controller and environmental considerations.
Recommendations for correctly connecting temperature probes.
Details on wiring the controller, including power supply and output connections.
Table listing alarm messages, their causes, and output status.
How various alarm conditions are recovered and reset.
Specifications for housing, dimensions, power, inputs, outputs, and operating ranges.
Table of default parameter values for quick configuration.
Wiring diagrams for different XR60CX models and power supply options.
The Dixell XR60CX is a microprocessor-based digital controller designed for medium and low-temperature ventilated refrigerating units. This device offers comprehensive control over various aspects of a refrigeration system, including compressor, fan, and defrost management. Its compact format (32 x 74 mm) and user-friendly interface make it suitable for a wide range of applications.
The XR60CX features three relay outputs to control the compressor, fan, and defrost functions. Defrost can be configured for either electrical heater or hot gas operation. The controller is equipped with three NTC or PTC probe inputs. The first probe is dedicated to temperature control, ensuring precise regulation of the refrigerated environment. The second probe is strategically placed on the evaporator to manage defrost termination temperature and fan operation. An optional third probe can be connected to the HOT KEY terminals to signal condenser temperature alarms or display an additional temperature reading. Furthermore, a digital input can function as a fourth temperature probe, enhancing monitoring capabilities.
The regulation of the compressor is based on the temperature measured by the thermostat probe. The compressor starts when the temperature reaches the set point plus a positive differential (Hy) and turns off when the temperature returns to the set point. In the event of a thermostat probe failure, the compressor's start and stop times are managed by the "COn" and "COF" parameters, ensuring continued operation.
Defrost management offers two modes: electrical heater (tdF = EL) or hot gas (tdF = in). Parameters like "IdF" (interval between defrost cycles) and "MdF" (maximum defrost length) allow for flexible scheduling. Defrost can be timed or controlled by the evaporator probe (P2P). After defrost, a dripping time ("FSt" parameter) is initiated to allow water to drain, with the option to disable it.
The XR60CX provides extensive control over evaporator fans. The "FnC" parameter defines the fan operating mode: fans can switch ON and OFF with the compressor (C_n, C_Y) or run continuously (o_n, o_Y). During defrost, fans can be configured to be OFF (C_n, o_n) or ON (C_Y, o_Y). A timed fan delay ("Fnd") after defrost allows for drip time. The "FSt" parameter sets a temperature threshold, above which fans are always OFF, ensuring air circulation only when the temperature is below this value. To prevent short cycling, a forced activation of fans can be enabled via the "Fct" parameter, switching fans on if the temperature difference between evaporator and room probes exceeds a set value. Cyclical activation of fans with the compressor off is also possible using "Fon" and "FoF" parameters, allowing fans to run in cycles even when the compressor is inactive.
The controller includes a continuous cycle function, activated by holding the UP key for 3 seconds. During this cycle, the compressor operates continuously for a time set by "CCt" to maintain a specific set point ("CCS"), useful for rapid cooling of new products. This cycle can be manually terminated. An ON/OFF function, controlled by the "onF" parameter, allows the instrument to be switched off, disabling regulation and displaying "OFF."
Alarm management is comprehensive, covering temperature alarms (ALU, ALL), condenser temperature alarms (AL2, AU2), and digital input alarms. Temperature alarms can be configured as absolute (Ab) or relative (rE) to the set point. Delays ("ALd," "dAO," "Ad2," "dA2") are incorporated to prevent nuisance alarms. The controller can also manage compressor shutdown based on low or high condenser temperature alarms ("bLL," "AC2").
The digital input is highly versatile and programmable via the "i1F" parameter. It can be configured as a door switch ("dor"), generic alarm ("EAL"), serious alarm ("bAL"), pressure switch ("PAL"), defrost activation ("dFr"), action inversion (cooling/heating, "Htr"), or energy saving ("ES"). Each configuration triggers specific responses from the controller, such as displaying messages, controlling outputs, or modifying the set point.
The front panel features intuitive commands for easy operation. The "SET" key allows users to display and modify the target set point. A manual defrost can be initiated by holding the "DEF" key. The "UP" and "DOWN" keys are used to view stored maximum and minimum temperatures, browse parameter codes, and adjust displayed values. A key combination (SET + UP) locks and unlocks the keyboard, preventing accidental changes. Another combination (SET + DOWN) provides access to the programming mode.
The controller offers two levels of parameter access: a "First Level" (user level) and a "Hidden Menu" containing all parameters. Parameters can be moved between these levels for customized access. The display provides clear indications of operational status through various LEDs, signaling compressor activity, defrost in progress, fan operation, alarms, continuous cycle, energy saving, and programming phase.
The HOT KEY output enables easy programming of the controller using a dedicated keyboard. It also allows connection to a ModBUS-RTU compatible monitoring system, such as Dixell's X-WEB family, via an external XJ485-CX module. This facilitates remote monitoring and management of the refrigeration unit. The HOT KEY can also be used to upload settings from one controller to another or download pre-programmed settings, simplifying installation and configuration for multiple units.
For maintenance, the manual emphasizes safety precautions, including disconnecting all electrical connections before any work. The instrument is designed for durability, with a self-extinguishing ABS housing and IP65 frontal protection. The non-volatile memory (EEPROM) ensures that stored data and settings are retained even during power outages.
The device includes self-diagnostic capabilities, indicated by alarm messages such as "P1," "P2," "P3," and "P4" for probe failures. These alarms automatically clear once the probe returns to normal operation or the fault is resolved. Temperature alarms ("HA," "LA," "HA2," "LA2") also reset automatically when temperatures return to normal. Digital input alarms ("EA," "CA") recover when the input is disabled or the instrument is reset.
The manual provides detailed instructions for electrical connections, emphasizing the separation of probe cables from power supply and load cables to prevent interference. It also advises on proper probe placement to ensure accurate temperature measurements and effective defrost termination. The use of mains filters (e.g., Dixell FT1) is recommended in industrial environments to mitigate the effects of inductive loads.
General| Model | XR60CX |
|---|---|
| Output Type | Relay |
| Digital Inputs | 2 |
| Front Panel Protection | IP65 |
| Protection Rating | IP65 |
| Type | Controller |
| Input Type | NTC |
| Power Supply | 230 V AC |
| Measuring Range | Depends on the probe used |
| Resolution | 0.1 °C |
| Accuracy | ±0.5 °C |
| Serial Output | RS485 |
| Display | LCD |
| Communication | Modbus RTU |
