A Delta temperature controller refers to a temperature control device made by Delta Electronics, a global manufacturer of automation and energy-saving products. These controllers are widely used in industrial automation, HVAC systems, plastic machinery, packaging, food processing, and more. Let’s break down the Delta temperature controller in detail: 🔧 1. What Is a Temperature Controller? A temperature controller is a device that regulates temperature by comparing a measured temperature with a desired setpoint and then taking corrective action through control outputs. 🏷️ 2. Delta Temperature Controller Series Delta offers several series of temperature controllers. The most common ones include: Series Description DTA Series Basic models, easy operation, compact size. DTB Series Advanced PID, faster response, dual display. DTC Series Multi-functional, better communication capabilities. DTD Series DIN-rail mounting, space-saving, often used in panels. 🔌 3. Key Features PID Control: Proportional-Integral-Derivative control for precise and stable temperature regulation. Auto-tuning: Automatically determines optimal PID parameters. Input Types: Supports various sensor types – thermocouples (K, J, T, etc.), RTDs (PT100), etc. Output Types: Relay, voltage pulse (for SSRs), 4-20mA current, or 0-10V analog output. Dual Display: Shows both process value (PV) and setpoint (SV). Alarm Functions: High/low limits, deviation alarms. Communication: RS-485 Modbus supported in some models for integration with PLCs or HMIs. Compact Design: Suitable for panel or DIN-rail mounting. 🔄 4. Working Principle Sensing: A sensor (thermocouple or RTD) measures the current temperature. Comparison: The controller compares this temperature (PV) to the setpoint (SV). Control: If there’s a difference (error), it adjusts output (e.g., turns on/off heater or cooler). Output Signal: Based on PID calculation or On/Off control, it sends a signal to actuators (like a solid-state relay or contactor). ⚙️ 5. Basic Wiring Diagram (Example: DTB Series) pgsql Copy Edit +---------------------------+ | DTB-4824 | |--------------------------| | Sensor (K Type TC) | | Output to SSR or Relay | | Power Supply (e.g. 100-240VAC) | | RS-485 Modbus (optional) | +---------------------------+ 🔧 6. Front Panel & Settings PV (Process Value): Shows real-time temperature. SV (Setpoint Value): Desired temperature you set. Mode Key: To navigate through settings. Up/Down Keys: Adjust setpoint or parameters. Set Key: Confirm settings. 📐 7. Applications Plastic molding machines Food and beverage processing HVAC systems Dryers and ovens Packaging equipment Lab testing devices 🛠️ 8. Programming / Parameter Setting Parameters include: Code Function Example SL1 Input type K for K-type thermocouple SL3 Control method PID or ON/OFF SL5 Output type Relay, SSR, etc. SL10 Alarm mode High, low, band, etc. Programming can be done using the front panel or via RS-485 software if communication is enabled.