1. Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of the JDOUNFMO REX-C100 PID Temperature Controller. The REX-C100 is a high-precision industrial temperature control instrument designed for various heating and cooling applications. Please read this manual thoroughly before use to ensure proper and safe operation.
2. Safety Information
WARNING: Electrical Shock Hazard. Disconnect power before installation or servicing.
- Ensure all wiring is performed by qualified personnel in accordance with local electrical codes.
- Verify the power supply voltage matches the controller's specifications (220VAC, 50/60Hz).
- Do not operate the device in environments with flammable gases, vapors, or explosive dust.
- Do not modify the instrument. Unauthorized modifications can lead to malfunction or safety hazards.
- Protect the instrument from moisture, dust, and extreme temperatures.
3. Package Contents
The package for the C100 Relay Output model typically includes:
- 1x REX-C100 Temperature Controller (Relay Output)
- 1x English User Manual
If you purchased a "Set" variant, additional components may include:
- 1x 40DA Solid State Relay (SSR)
- 1x K-Type Thermocouple (1 meter)
- 1x Heat Sink (for SSR, if "Set 2" was purchased)
Image: Typical components included in a REX-C100 temperature control system, showing the controller, a solid-state relay, and a K-type thermocouple.
4. Specifications
| Component | Specification |
|---|---|
| REX-C100 Temperature Controller | |
| Model Number | REX-C100FK07-V*AN / REX-C100FK07-M*AN |
| Temperature Range | 0 to 1300°C (when used with K-Type Thermocouple) |
| Control Output | Relay Output |
| Alarm Output | 1 Alarm Output |
| Dimensions | 48x48x108mm |
| Power Supply | 220VAC, 50/60Hz |
| Max. 40A SSR (Solid State Relay) | |
| Rated Current | 40A |
| Input Voltage | 3-32VDC |
| Output Voltage | 24-380VAC |
| K-Type Thermocouple | |
| Wire Length | 1M |
| Temperature Range | 0-600°C (400°C recommended for long-term use) |
| Internal Insulation | Fiberglass |
| External Shielding | Insulated Shielding |
| Heat Sink | |
| Dimensions | 50x80x50mm |
| Compatibility | Suitable for Single Phase SSR 10-40A |
5. Setup and Wiring
Proper wiring is crucial for the safe and correct operation of the REX-C100 controller. Refer to the wiring diagram on the side of the controller and the specific instructions for your application.
5.1 Controller Overview
Image: Front panel with PV/SV displays and control buttons, and side view showing ventilation and mounting clips of the REX-C100 controller.
The front panel features two digital displays: PV (Process Value - current temperature) and SV (Set Value - target temperature). Control buttons allow for setting parameters and operating the device.
5.2 Wiring Diagram
The REX-C100 controller has terminal blocks on the rear for power input, sensor input, and control output. The specific wiring configuration depends on whether you are using the internal relay output or an external Solid State Relay (SSR).
Image: Rear view of the REX-C100 controller showing the terminal block for power, sensor, and output connections. A label with a simplified wiring diagram is visible.
General Wiring Steps:
- Power Connection: Connect 220VAC power to terminals 1 and 2 (as indicated on the controller's label).
- Thermocouple Connection: Connect the K-Type Thermocouple to terminals 9 and 10. Ensure correct polarity (positive to positive, negative to negative) as indicated by the thermocouple's color coding (typically red for negative, yellow for positive for K-type in some regions, or refer to specific thermocouple documentation).
- Relay Output Connection: For the relay output model, the control output terminals (e.g., 4 and 5, or 6 and 7 depending on the specific variant and function) will switch the power to your heating/cooling element directly or through an intermediate relay/contactor. Refer to the detailed diagram on the controller's casing.
- Alarm Output (Optional): If using the alarm function, connect your alarm device to the designated alarm output terminals (e.g., 7 and 8).
Note on SSR Connection (if applicable):
Image: A FOTEK SSR-40DA Solid State Relay, showing input terminals (3-32VDC) and output terminals (24-380VAC).
If your REX-C100 model provides an SSR drive output (typically 12VDC) and you are using an external SSR, connect the controller's SSR output to the input terminals of the SSR (e.g., 3-32VDC input for a 40DA SSR). The SSR then switches the high-voltage AC power to your heating element. Ensure the SSR is adequately sized for your load and mounted on a heat sink if necessary.
Image: A K-Type Thermocouple with a 1-meter braided wire and fork terminals for connection.
6. Operating Instructions
The REX-C100 controller uses a PID (Proportional-Integral-Derivative) algorithm for precise temperature control. Basic operation involves setting the desired temperature (SV) and monitoring the actual temperature (PV).
6.1 Initial Power-Up
After wiring, apply power. The controller will display the current process value (PV) and set value (SV). If the PV display shows "HHHH" or "LLLL", check the thermocouple connection and ensure it is within the measurable range.
6.2 Setting the Target Temperature (SV)
- Press the SET button once. The SV display will begin to flash.
- Use the Up (▲) and Down (▼) arrow buttons to adjust the desired temperature.
- Use the Left (◀) arrow button to shift the digit for faster adjustment.
- Press the SET button again to confirm the new SV. The display will stop flashing, and the controller will begin to regulate the temperature.
6.3 Auto-Tuning (AT) Function
The REX-C100 features an auto-tuning function to optimize PID parameters for your specific heating system. This helps achieve stable and accurate temperature control.
- Set your desired target temperature (SV) as described above.
- Press and hold the AT button (often combined with the left arrow) for approximately 3-5 seconds until the "AT" indicator light starts flashing.
- The controller will cycle through heating and cooling to determine the optimal PID values. This process may take some time (e.g., 30 minutes to several hours) depending on your system's thermal characteristics.
- Once auto-tuning is complete, the "AT" indicator will stop flashing, and the controller will operate with the newly calculated PID parameters.
It is recommended to perform auto-tuning whenever the heating element, sensor, or controlled process changes significantly.
6.4 Parameter Settings
The REX-C100 has various advanced parameters (e.g., input type, control mode, alarm settings, PID constants) that can be accessed by pressing and holding the SET button for several seconds. Refer to the full English manual for a detailed explanation of each parameter and its adjustment. Incorrect parameter settings can lead to unstable control or damage.
Image: The REX-C100 controller displayed alongside a portion of its user manual, highlighting the importance of referring to the complete documentation for detailed parameter settings and wiring warnings.
7. Maintenance
The REX-C100 PID Temperature Controller is designed for reliable operation with minimal maintenance. Follow these guidelines to ensure longevity:
- Cleaning: Periodically clean the front panel with a soft, dry cloth. Do not use abrasive cleaners or solvents.
- Environment: Ensure the operating environment remains within specified temperature and humidity ranges. Avoid excessive dust or corrosive atmospheres.
- Connections: Regularly inspect wiring connections for tightness and signs of corrosion or damage. Loose connections can lead to erratic behavior or overheating.
- Ventilation: Ensure adequate airflow around the controller and any associated SSRs to prevent overheating.
8. Troubleshooting
Refer to the following table for common issues and their potential solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| PV display shows "HHHH" or "LLLL" | Thermocouple open circuit, reversed polarity, or out of range. | Check thermocouple wiring, ensure correct polarity, and verify the temperature is within the 0-1300°C range. Replace faulty thermocouple if necessary. |
| Temperature not reaching SV | Insufficient heating power, incorrect PID parameters, or faulty heating element. | Verify heating element functionality. Perform auto-tuning (AT) to optimize PID parameters. Check power supply to heating element. |
| Temperature overshoots/undershoots SV | PID parameters not optimized for the system. | Perform auto-tuning (AT) to recalibrate PID parameters. |
| Controller not turning on | No power supply, incorrect wiring, or internal fault. | Check 220VAC power connection to terminals 1 and 2. Ensure power source is active. If problem persists, contact support. |
| Output not activating (heating element not turning on) | Faulty relay, incorrect wiring, or controller in manual mode. | Check wiring to the heating element. Verify the controller is in automatic control mode. Test the relay output (if safe to do so). |
9. Warranty Information
JDOUNFMO products are manufactured to high-quality standards. This product comes with a standard manufacturer's warranty against defects in materials and workmanship. The warranty period typically covers 12 months from the date of purchase. This warranty does not cover damage caused by improper installation, misuse, unauthorized modification, or natural disasters. Please retain your proof of purchase for warranty claims.
10. Support
For technical assistance, troubleshooting beyond this manual, or warranty inquiries, please contact your retailer or the manufacturer directly. When contacting support, please have your product model number (REX-C100) and purchase information ready.
Manufacturer: JDOUNFMO
(Specific contact details such as email or phone number are not provided in the product data. Please refer to your purchase documentation for direct support contacts.)