1. Introduction
This manual provides essential information for the correct installation, operation, and maintenance of the Eliwell IDPlus 902 temperature controller. The IDPlus 902 is a versatile digital thermostat designed for refrigeration and heating applications, compatible with NTC, PTC, and PT1000 temperature sensors, operating on a 230Vac power supply.
Please read this manual carefully before installing or operating the device to ensure safe and efficient performance. Keep this manual for future reference.
2. Safety Information
- Electrical Hazard: Disconnect power supply before performing any wiring or maintenance. Only qualified personnel should perform electrical connections.
- Voltage: Ensure the power supply voltage matches the device's specifications (230Vac).
- Environment: Do not expose the device to water, excessive humidity, or corrosive agents. Install in a well-ventilated area.
- Mounting: Securely mount the controller according to the instructions to prevent accidental dislodgement.
- Sensor Compatibility: Use only compatible NTC, PTC, or PT1000 sensors as specified.
3. Product Overview
The Eliwell IDPlus 902 is a single-stage temperature controller featuring a clear digital display and intuitive button interface. It is designed for precise temperature management in various industrial and commercial applications, particularly in refrigeration units. Key features include:
- Universal sensor input (NTC, PTC, PT1000 selectable).
- One relay output for compressor or heating control (8A).
- Adjustable setpoint and differential.
- Defrost management capabilities (if configured).
- Front panel mounting.
Figure 1: Front view of the Eliwell IDPlus 902 temperature controller, showing the display and control buttons.
4. Installation (Setup)
4.1. Mounting
The IDPlus 902 is designed for panel mounting. Cut a rectangular opening of 71 x 29 mm (2.80 x 1.14 inches) in the panel. Insert the controller from the front and secure it using the provided side clips.
4.2. Electrical Connections
Refer to the wiring diagram below for proper electrical connections. Ensure all connections are secure and comply with local electrical codes.
Figure 2: Typical wiring diagram for the Eliwell IDPlus 902. Connect power to terminals 7 and 8 (230Vac). Connect the temperature sensor to terminals 1 and 2. The relay output for the load (e.g., compressor) is connected to terminals 5 (common) and 6 (normally open).
- Power Supply (230Vac): Connect to terminals 7 and 8.
- Temperature Sensor: Connect the NTC, PTC, or PT1000 sensor to terminals 1 and 2. Ensure correct polarity for PT1000 if applicable (though typically 2-wire).
- Relay Output (Load): Connect the controlled device (e.g., compressor, heater) to terminals 5 (common) and 6 (normally open contact).
5. Operating Instructions
5.1. Display
The display shows the current temperature measured by the probe. During parameter setting, it shows parameter codes and values.
5.2. Button Functions
| Button | Function (Short Press) | Function (Long Press) |
|---|---|---|
| SET | View/Modify Setpoint | Access Parameter Menu |
| UP (▲) | Increase Value | Manual Defrost (if configured) |
| DOWN (▼) | Decrease Value | View Auxiliary Probe (if configured) |
5.3. Setting the Setpoint
- Press the SET button briefly. The current setpoint value will flash.
- Use the UP (▲) or DOWN (▼) buttons to adjust the setpoint to the desired temperature.
- Press the SET button again to confirm and save the new setpoint. The display will return to showing the current temperature.
6. Parameter Settings
The IDPlus 902 has a comprehensive menu of configurable parameters to fine-tune its operation. These parameters control aspects such as sensor type, differential, calibration, defrost cycles, and alarm thresholds.
6.1. Accessing the Parameter Menu
- Press and hold the SET button for approximately 3 seconds until "PS" (Parameter Set) appears on the display.
- Use the UP (▲) or DOWN (▼) buttons to navigate through the parameter codes (e.g., "Hy" for hysteresis/differential, "P1" for probe type).
- Once the desired parameter code is displayed, press SET briefly to view its current value.
- Use the UP (▲) or DOWN (▼) buttons to modify the value.
- Press SET again to confirm and save the new value.
- To exit the parameter menu, press and hold the SET button for 3 seconds, or wait for the timeout (approximately 30 seconds) for the display to return to normal operation.
Note: A detailed list of all parameters and their functions can be found in the full technical manual, typically available from the manufacturer's website or included with the product packaging. Incorrect parameter settings can lead to improper operation or damage.
7. Maintenance
The Eliwell IDPlus 902 is designed for reliable operation with minimal maintenance. However, periodic checks can help ensure its longevity and accuracy.
- Cleaning: Clean the front panel with a soft, damp cloth. Do not use abrasive cleaners or solvents. Ensure no liquid enters the device.
- Connections: Periodically check all electrical connections for tightness and signs of corrosion.
- Sensor: Ensure the temperature sensor is clean and properly positioned in the area where temperature is to be controlled.
- Ventilation: Ensure adequate airflow around the device if installed in an enclosure to prevent overheating.
8. Troubleshooting
If the controller is not functioning as expected, refer to the following common issues and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Display shows "Err" or "Prt" | Sensor fault (open circuit, short circuit, or out of range). | Check sensor connections. Replace sensor if faulty. Verify sensor type parameter matches installed sensor. |
| Controller not switching load | Incorrect setpoint/differential, wiring error, or faulty relay. | Verify setpoint and differential settings. Check load wiring. Test the relay (if possible, by a qualified technician). |
| Display is blank | No power supply. | Check power connections (terminals 7 and 8) and ensure 230Vac is present. Check fuses if applicable. |
| Temperature reading is inaccurate | Sensor calibration error, incorrect sensor type selected, or faulty sensor. | Check sensor type parameter. Perform sensor calibration if necessary. Replace sensor. |
9. Specifications
| Feature | Specification |
|---|---|
| Model | IDPlus 902 |
| Power Supply | 230Vac, 50/60Hz |
| Sensor Inputs | 1 x Universal (NTC, PTC, PT1000 selectable) |
| Relay Output | 1 x SPDT 8A @ 250Vac (resistive load) |
| Display | 3-digit + sign, red LED |
| Mounting | Panel mount, 71 x 29 mm cutout |
| Operating Temperature | 0 to 50°C (32 to 122°F) |
| Storage Temperature | -20 to 70°C (-4 to 158°F) |
10. Warranty and Support
Eliwell products are manufactured to high-quality standards and are typically covered by a limited warranty against defects in materials and workmanship. For specific warranty terms and conditions, please refer to the documentation provided with your purchase or visit the official Eliwell website.
For technical support, troubleshooting assistance beyond this manual, or to inquire about spare parts, please contact your authorized Eliwell distributor or customer service. When contacting support, please have your product model (IDPlus 902) and any relevant purchase information ready.
Eliwell Official Website: www.eliwell.com
