1. Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of the COKYIS CH102 Digital PID Temperature Controller. The CH102 is an intelligent temperature regulator designed for precise control in various industrial and commercial applications. Please read this manual thoroughly before using the device to ensure safe and efficient operation.
2. Product Overview
The COKYIS CH102 is a compact digital PID temperature controller featuring a dual 8-segment 4-digital display for clear indication of process value (PV) and set value (SV). It supports universal input types and offers dual output options (Electromagnetic relay + SSR) with two alarm functions for versatile temperature management.
Figure 2.1: COKYIS CH102 Digital PID Temperature Controller. This image illustrates the front panel with its dual display and control buttons, along with key dimensions (48x48x78mm external, 45x45mm cut size) and input/output capabilities.
3. Specifications
| Parameter | Specification |
|---|---|
| Model Number | CH102FK02-MV*AN |
| External Dimensions | 48 x 48 x 78 mm |
| Perforation Dimensions | 45 x 45 mm |
| Supply Voltage | AC 85-265V, 50/60Hz |
| Measurement Precision | ±0.5%FS |
| Temperature Measurement Range | 0-1300°C (Default factory setting: 0-400°C) |
| Input Types | K, E, J, PT100, CU50 (Universal) |
| Output Types | Electromagnetic Relay + SSR (Solid State Relay) |
| Control Mode | Industrial-grade expert auto-tuning PID technology |
| Resolution | 14 bit |
| Indication Method | 8-segment 4-digital display and LED indication |
| Alarm Quantity | 2 Alarms |
| Cold Junction Compensation Error | ±2°C (0-50°C within software correction) |
| Insulation Resistance | >500MΩ (500VDC) |
| Operating Environment | 0 to 50 °C (32 to 122 °F), 30-85% RH (non-corrosive gases) |
| Item Weight | 50 Grams (1.76 ounces) |
| Backlight | Yes |
4. Setup and Installation
4.1 Physical Installation
The CH102 controller is designed for panel mounting. Ensure the panel cutout matches the perforation dimensions of 45x45mm. Insert the controller into the cutout and secure it using the provided mounting brackets.
4.2 Wiring
Proper wiring is crucial for the safe and correct operation of the temperature controller. Refer to the wiring diagram typically found on the side of the unit or in the full product documentation. Ensure all connections are secure and comply with local electrical codes.
- Power Supply: Connect the AC 85-265V power supply to the designated terminals.
- Sensor Input: Connect your chosen temperature sensor (K, E, J thermocouple, PT100, or CU50 RTD) to the input terminals. Ensure correct polarity for thermocouples.
- Control Output: Connect your heating/cooling element or other controlled device to the relay and/or SSR output terminals as required by your application.
- Alarm Output: If utilizing alarm functions, connect external alarm indicators or devices to the alarm output terminals.
Figure 4.1: Rear view of the CH102 controller. This image displays the various terminal blocks on the back of the unit, indicating where power, sensor, and output wires should be connected.
Figure 4.2: Internal components of the CH102. This view shows the internal circuit board, including the relays and other electronic components responsible for the controller's functionality.
5. Operating Instructions
5.1 Basic Display
Upon power-up, the controller will display the Process Value (PV) on the upper red display and the Set Value (SV) on the lower green display.
5.2 Setting the 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 set temperature.
- Press SET again to confirm the new SV and exit the setting mode.
5.3 PID Auto-tuning
The CH102 features industrial-grade expert auto-tuning PID technology for optimal temperature control. To initiate auto-tuning:
- Ensure the system is at a stable temperature, preferably near the desired set point.
- Press and hold the SET button for approximately 3-5 seconds until the controller enters the parameter setting mode.
- Navigate through the parameters (refer to the full manual for parameter codes) to find the auto-tuning parameter (often labeled 'AT' or similar).
- Set the auto-tuning parameter to 'ON' or '1'. The controller will then cycle the output to determine the optimal PID parameters. This process may take some time.
- Once auto-tuning is complete, the controller will automatically revert to normal operation with the newly calculated PID values.
5.4 Alarm Settings
The CH102 supports two alarms. Alarm parameters can be configured in the parameter setting mode. Common alarm types include deviation alarms (high/low), absolute alarms, and band alarms. Consult the detailed programming manual for specific parameter codes and adjustment procedures.
6. Maintenance
- Cleaning: Regularly wipe the display and casing with a soft, dry cloth. Avoid using abrasive cleaners or solvents.
- Connection Checks: Periodically inspect all wiring connections to ensure they are tight and free from corrosion.
- Environmental Conditions: Ensure the operating environment remains within the specified temperature and humidity ranges to prolong the life of the device. Avoid exposure to corrosive gases.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No display/Power off | No power supply or incorrect wiring. | Check power connections and voltage. Ensure AC 85-265V is supplied. |
| Incorrect temperature reading (PV) | Sensor wiring error, wrong sensor type selected, or faulty sensor. | Verify sensor connections and polarity. Check the input type setting in parameters. Test the sensor. |
| Output not activating | SV not reached, output mode incorrect, or faulty output component. | Check SV and PV values. Verify control mode (heating/cooling) and output settings. Test the relay/SSR. |
| Temperature overshoots/undershoots | PID parameters not optimized. | Perform PID auto-tuning (refer to Section 5.3). |
8. Important Notes
The default factory setting for the temperature measurement range is 0-400°C. To achieve the full 0-1300°C range, it is necessary to:
- Use a thermocouple capable of measuring up to 1300°C (e.g., K-type thermocouple).
- Change the thermocouple input type setting within the controller's parameters to match the high-temperature thermocouple. Refer to the detailed programming manual for instructions on adjusting input type parameters.
9. Warranty and Support
For warranty information, technical support, or service inquiries, please contact your retailer or the manufacturer directly. Keep your purchase receipt as proof of purchase.