The **E5GN-R2HT-C** is a high-performance digital temperature controller manufactured by **Omron**. It belongs to the E5GN series, which is characterized by its compact 1/32 DIN size (48 x 24 mm). --- ## 1. Technical Specifications Breakdown The alphanumeric code "R2HT-C" provides specific details about its internal electronic components and capabilities: | Code Segment | Feature | Description | | :--- | :--- | :--- | | **E5GN** | Series | Compact 1/32 DIN Temperature Controller | | **R** | Control Output | **Relay Output**: SPST-NO, 250 VAC, 2 A | | **2** | Auxiliary Outputs | **Two Auxiliary Outputs**: Typically used for alarms | | **H** | Heater Burnout | Includes **Heater Burnout (HB) detection** (requires CT) | | **T** | Transfer Output | Supported (varies by sub-model configuration) | | **C** | Case Color | Black case | --- ## 2. Key Electronic Components ### Control Output (Relay) Unlike SSR (Solid State Relay) models, the "R" designation means this unit contains a mechanical relay. * **Switching Capacity:** 250 VAC at 2 Amps. * **Best Use:** Best for driving contactors or slow-switching heating elements. Not recommended for high-frequency PID switching (which would cause premature wear). ### Input Sensors (Universal) The electronics are designed to process a wide range of analog signals: * **Thermocouples:** K, J, T, E, L, U, N, R, S, B, W. * **Platinum Resistance Thermometers:** Pt100 or JPt100. * **Non-contact Temperature Sensors:** ES1B. * **Analog Input:** 4 to 20 mA or 1 to 5 VDC (depending on internal jumper/setting). ### Power Supply * **Standard Range:** 100 to 240 VAC, 50/60 Hz. * **Internal Circuitry:** Features a switching power supply designed to withstand voltage fluctuations in industrial environments. --- ## 3. Advanced Electronic Features ### 2-PID Control The unit uses a sophisticated PID algorithm that prevents overshoot while maintaining high-speed response to disturbances. It electronically calculates the optimal proportional, integral, and derivative constants. ### Heater Burnout (HB) Detection The "H" in the model name indicates the presence of a **Current Transformer (CT)** input. The controller monitors the current flowing to the heater: * If the current drops below a set threshold while the control output is ON, the controller triggers an alarm. * This is critical for identifying failing heating elements before they cause process failures. ### 11-Segment Display The front panel uses a high-contrast, 11-segment LCD display that allows for clearer alphanumeric characters compared to standard 7-segment displays, making parameter settings easier to navigate. --- ## 4. Wiring Diagram Overview | Terminal Number | Function | | :--- | :--- | | **1 & 2** | Control Output (Relay) | | **3 & 4** | Auxiliary Output 1 (Alarm) | | **5 & 6** | Auxiliary Output 2 (Alarm) | | **7 & 8** | Power Supply (100-240 VAC) | | **9, 10, 11** | Sensor Inputs (Thermocouple/Pt100) | | **12** | CT (Current Transformer) Input |