1. Introduction
The W3230 Mini Digital Temperature Controller is a versatile device designed for precise temperature regulation in various applications, including household, industrial, and hobbyist projects. It supports both heating and cooling control modes and is available in different voltage configurations (DC 12V, DC 24V, AC 110-220V). This manual provides essential information for the safe and effective use of your temperature controller.
2. Safety Information
- Ensure the power supply voltage matches the specific model of your W3230 controller (DC 12V, DC 24V, or AC 110-220V). Connecting to an incorrect voltage can cause severe damage to the device and pose a safety hazard.
- All wiring should be performed by a qualified individual or with extreme caution, following local electrical codes and safety guidelines.
- Do not expose the controller unit to water or excessive humidity, although the sensor itself is waterproof.
- Keep the device away from flammable materials and ensure adequate ventilation to prevent overheating.
- Disconnect power before performing any wiring, maintenance, or troubleshooting.
3. Product Overview
The W3230 controller features a compact design with a clear digital display and intuitive controls.
3.1 Components
- W3230 Digital Temperature Controller Unit
- NTC10K Waterproof Temperature Sensor (1 meter wire)
3.2 Controls and Display
- PV (Process Value) Display: Shows the real-time measured temperature.
- SV (Set Value) Display: Shows the set temperature.
- OUT Indicator Light: Illuminates when the relay output is active (heating or cooling).
- SET Button: Used to enter and confirm parameter settings.
- Up (▲) Button: Increases values or navigates through parameters.
- Down (▼) Button: Decreases values or navigates through parameters.
- Restart Button: Resets the device.
4. Specifications
| Feature | Specification |
|---|---|
| Power Supply | DC 12V / DC 24V / AC 110-220V (model dependent) |
| Temperature Control Range | -55℃ to 120℃ |
| Resolution Ratio | 0.1°C (-9.9 to 99.9°C); 1°C (other ranges) |
| Measurement Accuracy | ±0.1°C |
| Control Accuracy | 0.1°C |
| Sensor | NTC10K Waterproof sensor |
| Output | Relay Contact Capacity: 20A 12V / 10A 220V |
| Environmental Requirements | -10-60°C, humidity 20%-85%RH |
| Dimensions | 79mm x 43mm x 26mm |
| Cutting Size (for panel mounting) | 73mm x 39mm |
| Sensor Wire Length | 1 meter |
| Is Smart Device | No |
| Battery Included | No |
5. Setup
5.1 Mounting
The W3230 controller is designed for panel mounting. Create an opening of 73mm x 39mm in your panel. Insert the controller and secure it using the integrated clips or mounting tabs.
5.2 Wiring
WARNING: Ensure power is disconnected before performing any wiring. Incorrect wiring can damage the device and create electrical hazards.
The terminal block on the back of the controller has four connections: +VCC, -GND, S1, and S2. +VCC and -GND are for power input, while S1 and S2 are for connecting the load (heating or cooling device).
5.2.1 DC 12V/24V Wiring
For DC models (12V or 24V), connect the positive (+) power supply to +VCC and the negative (-) power supply to -GND. Connect your DC load between S1 and S2. The sensor connects via its dedicated port.
5.2.2 AC 110-220V Wiring
For AC models (110-220V), connect the live wire of your AC power supply to +VCC and the neutral wire to -GND. Connect your AC load between S1 and S2. The sensor connects via its dedicated port.
Ensure the NTC10K waterproof sensor is connected to the designated sensor port on the controller.
6. Operating Instructions
6.1 Setting the Target Temperature (SV)
- Short press the SET button. The SV display will start flashing.
- Use the Up (▲) and Down (▼) buttons to adjust the desired target temperature.
- Short press SET again to confirm, or wait approximately 10 seconds for the setting to save automatically.
6.2 Advanced Parameter Settings (P0-P5)
To access advanced parameters, long press the SET button for approximately 5 seconds. The display will show P0.
- Use the Up (▲) and Down (▼) buttons to navigate through parameters P0 to P5.
- Short press SET when the desired parameter (e.g., P0) is displayed to view its current value.
- Use the Up (▲) and Down (▼) buttons to change the parameter value.
- Short press SET again to confirm the new value and return to the parameter list, or long press SET (or wait 10 seconds) to save all changes and exit the settings menu.
Parameter Descriptions:
- P0: Refrigeration (C) or Heating (H) Mode
Set to 'C' for cooling applications (e.g., refrigerator, fan). Set to 'H' for heating applications (e.g., heater, incubator). - P1: Return Difference Setting (Hysteresis)
This sets the difference between the target temperature and the temperature at which the output switches off. For example, if P0=H, SV=30°C, and P1=2°C, the heater turns on at 28°C and off at 30°C. If P0=C, SV=30°C, and P1=2°C, the cooler turns on at 32°C and off at 30°C. - P2: Maximum Temperature Setting Upper Limit
Sets the highest possible value for the target temperature (SV). This prevents accidental setting of excessively high temperatures. - P3: Minimum Temperature Setting Lower Limit
Sets the lowest possible value for the target temperature (SV). This prevents accidental setting of excessively low temperatures. - P4: Temperature Correction
Allows for calibration of the measured temperature. If the actual temperature differs from the displayed temperature, you can adjust this value to compensate. - P5: Delay Start Time (Unit: Minute)
Sets a delay before the output activates after the temperature condition is met. Useful for protecting compressors in cooling systems.
6.3 Video Demonstration
Watch this video for a visual guide on setting the parameters of the W3230 temperature controller:
7. Maintenance
- Regularly inspect wiring for any signs of wear or damage.
- Keep the controller clean and free from dust and debris. Use a soft, dry cloth for cleaning.
- Avoid exposing the unit to extreme temperatures or direct sunlight for prolonged periods.
- Ensure the sensor is securely placed in the area where temperature measurement is required.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Display shows 'OFF' or no reading | No power, incorrect wiring, or sensor disconnected/damaged. | Check power supply and connections. Ensure sensor is properly connected. |
| Temperature not controlling correctly | Incorrect P0 (heating/cooling mode) or P1 (hysteresis) setting. Sensor not placed correctly. | Verify P0 and P1 settings. Ensure sensor is measuring the desired area. |
| Output (load) not activating | Temperature not within set range, P5 delay active, or faulty wiring/load. | Check current temperature vs. SV. Check P5 setting. Verify load wiring and functionality. |
| Inaccurate temperature reading | Sensor calibration needed (P4), or sensor fault. | Adjust P4 for temperature correction. If issue persists, sensor may need replacement. |
| Device not powering on | No power supply, incorrect voltage, or internal fault. | Check power source. Confirm correct voltage model. Contact support if all else fails. |
9. User Tips
- Voltage Verification: Always ensure you have the correct voltage model (DC 12V, DC 24V, or AC 110-220V) for your application. Mismatching voltage is a common cause of malfunction.
- Wiring Precision: Double-check all wiring connections, especially for power input and the load. Secure connections prevent intermittent operation and potential damage.
- Sensor Placement: For accurate temperature control, place the NTC10K sensor directly in the environment or medium you wish to monitor and control.
- Calibration: If you suspect temperature inaccuracies, use the P4 parameter for fine-tuning the sensor reading against a known accurate thermometer.
- Incubator Compatibility: This controller is often used in incubators. Ensure P0 is set to 'H' (heating mode) and adjust P1 (hysteresis) to maintain a stable temperature range suitable for incubation.
10. Warranty and Support
For any issues, technical support, or warranty claims, please contact the seller or manufacturer directly. Keep your purchase records for reference.
