1. Introduction
This manual provides essential information for the proper installation, operation, and maintenance of the Dixell XR02CX-5N0C1 electronic temperature controller. This device is designed for refrigeration applications, including refrigerators, freezers, refrigerated display cases, and chiller tables. It features a 2-digit display and a defrost function with time control.
Figure 1: Front view of the Dixell XR02CX-5N0C1 controller.
2. Setup and Installation
2.1 Mounting
The XR02CX-5N0C1 controller is designed for panel mounting. Ensure a panel cut-out of 71 x 29 mm. The mounting depth required is 56 mm. The frontal protection rating is IP65, making it suitable for environments where water splashes may occur, while the rear protection is IP20.
2.2 Electrical Connections
All electrical connections should be performed by qualified personnel, adhering to local electrical codes and safety regulations. The controller operates on 230V AC, 50-60Hz. Use screw terminal blocks for wiring, suitable for cables up to 2.5 mm².
Refer to the wiring diagram below for correct terminal connections:
- Hot Key: For programming and data transfer.
- Room: NTC sensor input for temperature measurement.
- Dig. Input: Digital input (free voltage contact).
- Supply: Power supply connection (230V AC).
- Line: Live connection for power.
- Comp: Compressor relay output.
Figure 2: Electrical wiring diagram for the XR02CX-5N0C1 controller.
2.3 Sensor Installation
Connect the NTC temperature sensor to the designated 'Room' terminals as shown in the wiring diagram. Ensure the sensor is placed in a location representative of the temperature to be controlled within the refrigeration unit.
3. Operating Instructions
3.1 Power On
Once correctly wired and mounted, apply power to the controller. The 2-digit red LED display will illuminate, showing the current temperature measured by the NTC sensor.
3.2 Temperature Setting
The controller allows for setting a desired temperature (setpoint). Consult the full product manual (available from the manufacturer's website) for detailed instructions on accessing and modifying the setpoint and other parameters. Typically, a dedicated button or combination of buttons is used to enter the setpoint adjustment mode.
3.3 Defrost Function
The XR02CX-5N0C1 includes a defrost function, which is time-controlled. The parameters for defrost cycles (e.g., frequency, duration) are configurable. Refer to the comprehensive manual for parameter settings related to defrost cycles.
3.4 Digital Input
The digital input can be configured for various functions, such as door switch, external alarm, or remote defrost activation. The specific function depends on the controller's programming. Refer to the detailed programming manual for configuration options.
4. Maintenance
4.1 Cleaning
To clean the controller's front panel, use a soft, damp cloth. Do not use abrasive cleaners, solvents, or harsh chemicals, as these can damage the display or casing. Ensure no liquid enters the controller.
4.2 Periodic Checks
Periodically inspect all electrical connections to ensure they are secure and free from corrosion. Check the NTC sensor cable for any signs of damage. Any loose connections or damaged wiring should be addressed immediately by a qualified technician.
5. Troubleshooting
This section provides general guidance for common issues. For complex problems, contact technical support.
- Display is Off: Check the power supply to the controller (230V AC). Ensure all power connections are secure.
- Incorrect Temperature Reading: Verify the NTC sensor is correctly connected and not damaged. Ensure the sensor is properly positioned within the controlled environment.
- Compressor Not Activating: Check the setpoint and differential settings. Ensure the compressor relay output wiring is correct. Verify that the defrost cycle is not active.
- Error Codes: If the display shows an error code (e.g., 'P1', 'E1'), consult the full Dixell XR02CX-5N0C1 manual for specific error code definitions and troubleshooting steps.
6. Technical Specifications
Below are the detailed technical specifications for the Dixell XR02CX-5N0C1 electronic temperature controller:
| Feature | Specification |
|---|---|
| Manufacturer | DIXELL |
| Housing | Self-extinguishing ABS |
| Case Dimensions (Frontal) | 32 x 74 mm |
| Depth | 50 mm |
| Mounting (Panel Cut-out) | 71 x 29 mm |
| Mounting Depth | 56 mm |
| Protection Rating | IP20 (rear), IP65 (frontal) |
| Connections | Screw terminal block ≤ 2.5 mm² wiring |
| Power Supply | 230 Vac ±10%, 50/60Hz |
| Power Absorption | 3.5 VA max |
| Display | 2 digits, red LED, 14.2 mm high |
| Inputs | 1 NTC sensor |
| Digital Input | Free voltage contact |
| Relay Outputs (Compressor) | SPST 20(8)A 250Vac or 8(3)A 250Vac |
| Data Storing | Non-volatile memory (EEPROM) |
| Kind of Action | 1B |
| Pollution Grade | 2 |
| Software Class | A |
| Rated Impulsive Voltage | 2500V |
| Overvoltage Category | II |
| Operating Temperature | 0 ÷ 60 °C |
| Storage Temperature | -25 ÷ 60 °C |
| Relative Humidity | 20 ÷ 85% (no condensing) |
| Measuring & Regulation Range | NTC -40 ÷ 110 °C |
| Resolution | 0.1 °C or 1 °C or 1 °F (selectable) |
| Accuracy (ambient temp. 25°C) | ±0.1 °C ±1 digit |
Figure 3: Detailed technical specifications for the XR02CX-5N0C1 controller.
7. Warranty and Support
7.1 Warranty Information
For specific warranty terms and conditions, please refer to the documentation provided at the time of purchase or contact your seller. Warranty coverage typically includes defects in materials and workmanship under normal use.
7.2 Technical Support
If you encounter issues that cannot be resolved using this manual, please contact your supplier or the manufacturer's technical support. Ensure you have your product model number (XR02CX-5N0C1) and a detailed description of the problem ready when seeking assistance.