1. Introduction
This manual provides comprehensive instructions for the OPPWONG PID Temperature Controller Kit (Model: OPPWONGcd9u68h3vm-13, 48 x 96mm). It covers installation, operation, maintenance, and troubleshooting to ensure safe and efficient use of the device in various industrial and general temperature control applications. Please read this manual thoroughly before operating the controller.
2. Product Overview
The OPPWONG PID Temperature Controller is an intelligent instrument designed for precise temperature management. It features a microcomputer microcontroller with PID self-tuning capabilities, ensuring accurate and stable temperature control. The device supports both heating and cooling modes, making it versatile for diverse applications.
Key Features:
- Intelligent Control: Advanced microcomputer technology with PID self-tuning for precise temperature management.
- Comprehensive Digital Display: Backlit display shows Process Value (PV), Set Value (SV), Output (OUT), Alarm (ALM), and Self-Tuning (AT) status.
- Versatile Operating Modes: Supports both heating and cooling modes, selectable by the user.
- Automatic Return Feature: Automatically returns to the main display mode after 30 seconds of inactivity.
- Input Compatibility: Supports K, J, E, N type thermocouples, user-switchable.

Figure 2.1: Front view of the OPPWONG PID Temperature Controller. The display shows Process Value (PV) and Set Value (SV), along with indicators for Output (OUT), Self-Tuning (AT), and Alarm (AL1). Control buttons are located on the right side.
3. Installation
Proper installation is crucial for the safe and accurate operation of the temperature controller. Ensure the power is disconnected before proceeding with any installation steps.
3.1 Mounting the Controller
The controller is designed for panel mounting. Use the provided installation holders to secure the unit into a panel cutout of appropriate dimensions (48 x 96mm for this model).
- Create a panel cutout according to the specified dimensions.
- Insert the controller into the cutout from the front.
- Slide the installation holders onto the sides of the controller from the rear, ensuring they firmly grip the panel.
- Tighten the screws on the holders to secure the controller in place.

Figure 3.1: The PID Temperature Controller shown with its two white installation holders, used for securing the unit into a panel cutout.
3.2 Wiring Connections
Refer to the wiring diagram on the side label of the controller and the figures below for correct connections. Ensure all connections are secure to prevent electrical hazards and ensure proper operation.
- Power Supply (100-240V AC, 50/60Hz): Connect to terminals 8 and 9.
- Alarm Output (ALM, 250VAC 3A): Connect to terminals 1 and 2.
- SSR Output (12VDC for SSR): Connect to terminals 10 (+) and 11 (-).
- Relay Output (OUT, 250VAC 3A): Connect to terminals 13 and 14.
- Thermocouple Input (K, J, E, N): Connect to terminals 4 (+), 5 (-), 6 (B), 7 (C). Ensure correct polarity for thermocouples.

Figure 3.2: Detailed view of the wiring terminals and the integrated wiring diagram on the side of the controller. This diagram illustrates connections for power, alarm, SSR output, relay output, and thermocouple input.

Figure 3.3: Top-down perspective of the controller's wiring terminals, showing the screw-type connectors for secure electrical connections.
4. Operating Instructions
This section details how to operate your PID Temperature Controller, including basic settings and mode selection.
4.1 Display Overview

Figure 4.1: Close-up of the digital display. The upper display shows the Process Value (PV), which is the current measured temperature. The lower display shows the Set Value (SV), which is the target temperature. Indicators for OUT, AT, and AL1 are visible below the SV display.
- PV (Process Value): Displays the current measured temperature.
- SV (Set Value): Displays the target temperature.
- OUT: Indicates when the output (heating/cooling) is active.
- ALM (AL1): Indicates an alarm condition.
- AT: Indicates when the self-tuning function is active.
4.2 Setting the Target Temperature (SV)
- Press the MODE button to enter the setting mode. The SV display will start flashing.
- Use the Up (
) and Down (
) arrow buttons to adjust the Set Value. - Press the MODE button again to confirm the setting and exit the setting mode. The display will return to normal operation.
Note: If no buttons are pressed for 30 seconds, the controller will automatically return to the main display mode, saving any changes made.
4.3 Selecting Temperature Unit (℃/℉)
The controller supports both Celsius (℃) and Fahrenheit (℉) display units. The method to switch between units is typically found within the advanced parameter settings. Consult the full technical manual for detailed steps on accessing and changing this parameter.
4.4 PID Self-Tuning Function (AT)
The self-tuning function automatically calculates optimal PID parameters for your specific application, ensuring stable and accurate temperature control. To initiate self-tuning, typically you would press and hold a specific button (often the 'AT' button or a combination) until the 'AT' indicator lights up. The controller will then cycle through a series of heating and cooling operations to determine the best parameters. Once complete, the 'AT' indicator will turn off.
4.5 Control Modes (Heating/Cooling)
The controller can operate in either heating (reverse action) or cooling (positive action) mode. This setting is usually configured within the advanced parameter menu. Ensure the correct mode is selected based on your application requirements.
5. Maintenance
Regular maintenance helps ensure the longevity and reliable operation of your temperature controller.
- Cleaning: Gently wipe the display and casing with a soft, dry cloth. Do not use abrasive cleaners or solvents.
- Ventilation: Ensure the ventilation slots on the sides of the controller are not obstructed to prevent overheating.
- Connections: Periodically check all wiring connections to ensure they are secure and free from corrosion.
- Environment: Operate the controller within its specified environmental conditions (temperature, humidity) to avoid damage.
6. Troubleshooting
This section addresses common issues you might encounter and provides basic troubleshooting steps.
| Problem | Possible Cause | Solution |
|---|---|---|
| Display shows "HHHH" or "LLLL" | Thermocouple open circuit or reverse connection; temperature exceeds measurement range. | Check thermocouple wiring and polarity. Ensure temperature is within 0-999℃/℉ range. |
| No output (OUT indicator off) | Set Value (SV) is not reached; output wiring issue; controller in cooling mode when heating is needed. | Verify SV. Check output wiring. Ensure correct control mode (heating/cooling). |
| Temperature unstable or oscillating | PID parameters not optimized; sensor placement issue. | Initiate PID self-tuning. Ensure thermocouple is correctly placed and making good contact. |
| Alarm (ALM) indicator active | Temperature exceeded or fell below alarm set points. | Check alarm settings and current temperature. Address the condition causing the alarm. |
| Controller does not power on | No power supply; incorrect wiring. | Check power connections (terminals 8 & 9) and ensure power source is active. |
If the problem persists after attempting these solutions, please contact OPPWONG customer support for further assistance.
7. Specifications
| Feature | Detail |
|---|---|
| Model Number | OPPWONGcd9u68h3vm-13 |
| Dimensions | 48 x 96mm (Panel Cutout) |
| Supply Voltage | AC100-240V 50/60HZ |
| Input Type | K, J, E, N Thermocouple (user-switchable) |
| Measurement Range | 0-999℃/℉ (Input K) |
| Output | Relay (250VAC 3A) / SSR (12VDC) |
| Alarm Output | 250VAC 3A |
| Control Mode | PID control (NO/OFF, bit type PID, continuous PID), Self-tuning control |
| Accuracy | Measurement accuracy: ±0.5%FS |
| Sampling Period | 0.5 seconds |
| Display Functions | PV, SV, OUT, ALM, AT |
| Item Weight | 5.6 ounces |
| Manufacturer | OPPWONG |
8. Warranty and Support
For specific warranty information, please refer to the product packaging or contact your retailer. For technical support or further inquiries regarding your OPPWONG PID Temperature Controller, please visit the official OPPWONG website or contact their customer service department.
Manufacturer: OPPWONG
Model: OPPWONGcd9u68h3vm-13
ASIN: B0DSQDDS5P