Fourtech Temperature Controller Manual !!better!! (High Speed)

You can exit the info mode early by pressing and holding the (i) button for another 5 seconds or by disconnecting the boiler from the power supply.

Verify input terminals 1 and 2 with a multimeter for 85–265V AC.

Check the "OUT" indicator light. If it's on but there’s no heat, the issue is likely with your external relay or heating element.

48mm x 48mm (1/16 DIN) or 96mm x 96mm (1/4 DIN) depending on your specific model.

Temperature Controller Parameter Setting #PID #Controller with #SSR fourtech temperature controller manual

Where you connect your SSR (Solid State Relay) or Magnetic Contactor. 3. Setting the Temperature (SV) Setting your target is the most common task: Press the SET key briefly. The SV display will flash.

This guide provides a comprehensive overview of how to install, configure, and troubleshoot typical . 1. Introduction to Fourtech Temperature Controllers

PID parameters are poorly matched, or the SSR/Relay output is stuck in the closed position.

Internal memory or configuration corruption. Try restoring the unit to factory defaults, or cycle the input power. Common Operational Faults You can exit the info mode early by

What you are connecting (Thermocouple or Pt100)?

The operation menu is divided into user settings and parameter settings. A. Setting the Target Temperature Press the button once. Use the Up ( ↑up arrow ) or Down ( ↓down arrow ) arrows to set the desired temperature. Press 'SET' again to save. B. Accessing the System Parameters (Parameter Menu) Hold the 'SET' button for approximately 3-5 seconds. The screen will display a parameter code (e.g., ↑up arrow ↓down arrow to navigate through parameters. Press 'SET' to view the value, and use ↑up arrow ↓down arrow to adjust it. Wait for 5 seconds to exit or press power to save. C. Setting Hysteresis (Differential)

Proportional-Integral-Derivative control for stable, precise temperatures.

To change the set temperature (SV):

Relay output (mechanical) or SSR output (solid-state relay). 2. Technical Specifications & Wiring

To ensure your specific application runs smoothly, let me know:

Re-run the Auto-Tuning process. If the temperature continues to rise while the OUT light is off, replace the faulty external relay or solid-state relay. Er01 — Memory Error

Thermocouples are polarity-sensitive; ensure the positive and negative leads match the diagram on the controller casing. If it's on but there’s no heat, the

Many users lose hours when a controller dies because they didn't back up the parameters. Write down your P , I , d , and AL1 values in a notebook taped to the machine.

Press and hold the for 3 to 5 seconds. The PV display will change to show the first parameter code (typically InP or AL1 ). Use the SET key to scroll through the parameters, and use the arrow keys to adjust their values. Common Parameter Reference Table Parameter Name Description Default / Options InP Input Sensor Type Sets the input sensor connected to the device. K (Thermocouple), Pt (Pt100 RTD) P Proportional Band Determines the range of the proportional control action. Low value = fast reaction, High value = slow reaction I Integral Time Corrects steady-state temperature offsets over time. Set in seconds d Derivative Time Responds to rapid temperature changes to prevent overshoot. Set in seconds Ct Control Cycle Time The time period for output switching (SSR vs Relay). 2s for SSR, 15-20s for Mechanical Relay Hy Hysteresis The differential gap used only in ON/OFF control mode. Typically 1.0°C or 2.0°C AL1 Alarm 1 Value Sets the temperature threshold to trigger the first alarm. User-defined temperature value SC Sensor Calibration Offsets the display temperature to correct sensor errors. Positive or negative temperature offset Loc Parameter Lock Locks out access to menus to prevent tampering. 0 = Unlocked, 1 or 88 = Fully Locked 5. How to Run the PID Auto-Tuning Function