Fourtech Temperature Controller Manual Review

Important Note:

"Fourtech" is often a branding found on generic industrial PID temperature controllers (frequently manufactured by companies like Xiamen Yudian or other OEM manufacturers in China). These units are often functionally identical to the Yudian AI-518 or AI-720 series.

Disclaimer: This guide covers general features common to FourTech’s popular models (e.g., 48x48, 48x96). Always refer to your specific model’s sticker for exact terminal numbers. fourtech temperature controller manual

Phase 2: Basic Operation (Setting the Set Point - SV)

FourTech temperature controller manual

Before diving into programming, it is critical to understand that FourTech produces multiple generations of controllers. While this guide provides universal steps, the official for your specific model is essential for: Important Note: "Fourtech" is often a branding found

1. The official FourTech Automation website -> Support -> Downloads.
2. Industrial supply sites like Digi-Key, Mouser, or AutomationDirect (who rebrand some FourTech units).
3. QR codes (many new FourTech controllers ship with a QR code on the side label linking directly to the PDF).

| Terminal | Function | |----------|----------| | 1 & 2 | Power input (110V/220V AC) | | 3 & 4 | Sensor probe (NTC 10K) | | 5 & 6 | Cooling relay (Normally Open) | | 7 & 8 | Heating relay (Normally Open) | The official FourTech Automation website -> Support ->

Troubleshooting (Common Issues)