Fourtech Temperature Controller Manual Jun 2026

Use the or ▼ keys to adjust the target temperature value.

The is your most powerful tool for precision thermal management. While finding the exact PDF for a 15-year-old PXR model can be challenging, the logical structure of these controllers—from the PXR to the PCD series—remains remarkably consistent.

Connect to the rated voltage (e.g., 220V or 110V AC).

This guide is for generic "Fourtech" branded controllers often found in industrial automation markets. If your specific unit has a different interface or labeling, please check the sticker on the side of the controller for the exact model number (e.g., FT-818, FT-720) and consult the manufacturer's specific datasheet. fourtech temperature controller manual

Depending on your specific hardware configuration, you will use either mechanical relay contacts or a Solid State Relay (SSR) driver.

Enter the menu to choose between Fahrenheit (°F) and Celsius (°C) .

Temperature Controller Parameter Setting #PID #Controller with #SSR Use the or ▼ keys to adjust the target temperature value

Press briefly to save the value and move to the next parameter. Critical Parameter Reference Table Parameter Name Available Settings / Meanings InP Input Sensor Type K (Type K), J (Type J), Pt (PT100 RTD) Unit Temperature Unit C (Celsius) / F (Fahrenheit) dF Digital Filter 0 to 99 seconds (Smoothes out erratic sensor readings) Ctrl Control Mode PID (Proportional-Integral-Derivative) / ONOF (On/Off) AL1 Alarm 1 Mode High (High Limit) / Low (Low Limit) / Loop (Break) Programming the Set Value (Target Temperature)

Adjust the Set Value (SV) to your normal operating temperature.

Fourtech units are widely used in refrigeration, heating, HVAC, and industrial processes. They offer features such as: Adjustable hysteresis (temperature differential) Defrost cycle management (in refrigeration models) Sensor correction (calibration) Compressor delay protection 2. Technical Parameters & Initial Settings Connect to the rated voltage (e

(Control Action): Select (heating mode) or COOL (cooling mode). (Sensor Type): Select input type (e.g., -type thermocouple). (Unit): Set temperature scale to (Celsius) or (Fahrenheit). AL1cap A cap L 1 AbLOcap A b cap L cap O AbHicap A b cap H i

, based on standard industrial PID temperature controller manuals, including the Series PR-43 and similar Fourtech-related documentation . These controllers are typically used for precise temperature regulation in applications like PID control or ON/OFF control. 1. Key Interface & Components

: A core feature that allows the device to automatically calculate the proportional, integral, and derivative values for stable temperature management, preventing "overshoot". Multi-Sensor Input

Displays the current Process Value (temperature).