| Code | Name | Function | Typical Settings | | :--- | :--- | :--- | :--- | | | Alarm 1 | Sets the temperature for Alarm 1 (High/Low). | e.g., 100°C | | AL2 | Alarm 2 | Sets the temperature for Alarm 2. | e.g., 110°C | | Hy | Hysteresis | Dead band for alarm or on/off control. | 1-3 degrees | | P | Proportional Band | PID Parameter. Low P = Aggressive heating. | Default usually 10-30. | | I | Integral Time | PID Parameter. | Default usually 100-200. | | D | Derivative Time | PID Parameter. | Default usually 20-50. | | InPt / Sn | Sensor Input | Selects sensor type (K, J, Pt100). | K type is standard for most ovens. | | OutP | Output Type | Defines output signal (Relay, SSR, 4-20mA). | SSr or rEL . | | LoC | Lock | Locks the keypad to prevent changes. | 0 (Unlock), 1 (Lock Setpoint), 2 (Lock All). |
Remember the golden rules: before searching, understand the core parameters (SV, PID, AL), and never fear the Auto-Tune function . If you still cannot locate your manual, contact the distributor where you purchased the unit; many suppliers maintain extensive digital archives specifically for FourTech products. fourtech temperature controller manual
Prevents overshoot by reacting to the speed of temperature change. | Code | Name | Function | Typical
Even without your physical , these error codes are standard across the industry. | 1-3 degrees | | P | Proportional Band | PID Parameter
If the menu is locked, look for the LCK parameter and set it to 000 to allow changes. 5. The Auto-Tuning (AT) Function
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