Whether you are managing a chemical reactor or a backyard aquarium, the Fourtech Temperature Controller
Temperature Controller Parameter Setting #PID #Controller with #SSR
Press the SET key briefly. The SV display will begin to flash.
| Parameter | Name | What it does | Typical Setting |
| :--- | :--- | :--- | :--- |
| AL1 | Alarm 1 | Triggers a relay if temp exceeds this limit | 5-10° above SV |
| P | Proportional Band | How aggressive the controller reacts | Default (often 30) |
| I | Integral Time | Removes long-term error | Default (often 240) |
| d | Derivative Time | Prevents overshoot | Default (often 60) |
| t | Cycle Time | How fast the SSR/Relay switches | 1 sec (SSR) / 20 sec (Relay) |
| LCK | Lock | Prevents accidental setting changes | 0 (Unlocked) / 1 (Locked) |
: The controller typically supports multiple sensor types, including K and J thermocouples Pt100 RTDs
Control Output: Use a Solid State Relay (SSR) for precise PID control or a standard mechanical relay for simple ON-OFF tasks. 2. Front Panel Layout