: Ensure the "INP1" parameter matches the physical sensor type (e.g., K-type thermocouple).
Bring your system close to the normal operating room temperature. Set your target to your desired operating temperature. Access the menu and locate the AT (Auto-Tuning) parameter. Change the value from oFF to on . Press SET to exit.
Press to view the value of a specific code, adjust it with the arrows, and press SET again to confirm. Critical Parameter Reference Table Parameter Code Description Common Configuration Options InP / Int Input Sensor Type Set to K or J for thermocouples; Pt for Pt100 RTDs. Ctrl / CoMd Control Mode
Standard operation involves a simple key interface (SET, UP, DOWN, and sometimes a SHIFT key). Fourtech Temperature Controller List | PDF - Scribd
Before configuring your device, verify your specific model matches these standard Fourtech system specifications: Specification 100–240V AC, 50/60 Hz (Standard) or 24V DC (Optional) Input Types Thermocouples (J, K, T, R, S) and RTDs (Pt100) Output Options Relay output, SSR drive (Pulse), or Analog (4–20mA) Control Modes PID Control (with Auto-Tuning) or ON/OFF Control Display Dual-line LED (Process Value in Red, Set Value in Green) Wiring and Terminal Connections fourtech temperature controller manual free
Used for driving heavy loads directly or through an external contactor.
| Code | Description | Typical Range/Options | Function | | :--- | :--- | :--- | :--- | | | Alarm 1 | 0 to Full Scale | Sets the temperature at which Alarm 1 triggers (Absolute High Alarm). | | AL2 | Alarm 2 | 0 to Full Scale | Sets the temperature for Alarm 2. | | Hy | Hysteresis | 0 to 50 | Prevents output "chattering" on/off. Usually set to 2–5°C. | | InPt | Input Type | 0 : K-type Thermocouple 1 : J-type 2 : T-type 3 : PT100 RTD | Crucial: Must match your sensor type. If the controller displays "EEEE" or wrong temp, check this. | | OutP | Output Type | 0 : Relay (On/Off) 1 : SSR (Voltage pulse) 2 : 4-20mA (Analog) | Sets how the controller sends signals to the heater. | | At | Auto-Tuning | OFF / ON | Starts PID self-learning sequence. | | P | Proportional Band | 1–999 | PID Parameter (lower = more aggressive heating). | | I | Integral Time | 0–3600 sec | PID Parameter. | | d | Derivative Time | 0–3600 sec | PID Parameter. | | LoL | Low Limit | -199 to Setpoint | Restricts the minimum allowed setpoint. | | HiL | High Limit | Setpoint to Full Scale | Restricts the maximum allowed setpoint (Safety cap). |
Verify the incoming voltage with a multimeter. Ensure it matches the required rating on the controller's sticker. If power is present but the screen remains dark, the internal fuse or transformer may have failed.
If the temp goes way past your goal, run the Auto-Tune again. : Ensure the "INP1" parameter matches the physical
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Mastering Your Climate: The Ultimate Guide to Fourtech Temperature Controller Manuals
: Standard units include individual High and Low Alarm settings with relay outputs to trigger external safety shut-offs or indicators. Access the menu and locate the AT (Auto-Tuning) parameter
Fourtech controllers operate using a tiered menu structure. To change settings, you must navigate from the Operation Layer to the Configuration Layer. Step 1: Navigating the Interface
If you are looking for a free manual or need immediate help setting up your device, this comprehensive guide covers everything found in the official documentation. Technical Specifications
Common codes include (Startup temperature) and P1 (Stopping temperature). Safety Features :