The **ATS-2-R** typically refers to a high-performance **Automatic Transfer Switch** controller or unit, often used in telecommunications, data centers, and industrial power management. It is designed to monitor two power sources (usually Utility and Generator) and automatically switch the load to the stable source. --- ### 1. Core Electronic Components The internal architecture of the ATS-2-R consists of several critical electronic modules that handle sensing, logic, and switching. | Component | Function | Description | | :--- | :--- | :--- | | **Microcontroller (MCU)** | Logic & Control | The "brain" that processes voltage levels, timing, and switching logic. | | **Voltage Sensing Circuit** | Monitoring | High-impedance resistors and op-amps that step down voltage for the MCU to read. | | **Relay Outputs** | Actuation | Small electromagnetic relays that trigger the larger external contactors or breakers. | | **Power Supply Module** | Internal Power | A DC-DC converter or transformer that powers the internal electronics from the AC source. | | **LED/LCD Interface** | Display | Visual indicators for "Source Available," "Load Connected," and "Fault" status. | | **Communication Port** | Connectivity | Usually RS-485 or RS-232 for remote monitoring via Modbus protocols. | --- ### 2. Key Electronic Features The ATS-2-R is characterized by specific electronic functionalities that protect equipment: 1. **Under/Over Voltage Sensing:** The electronics constantly sample the sine wave. If the voltage drops below a threshold (e.g., 80%) or exceeds a limit (e.g., 120%), the logic initiates a transfer. 2. **Frequency Monitoring:** It ensures the generator has reached the correct RPM (typically 50Hz or 60Hz) before allowing the load to connect. 3. **Adjustable Time Delays:** * *TDNE (Time Delay Normal to Emergency):* Prevents nuisance tripping during brief flickers. * *TDEC (Time Delay Engine Cool-down):* Keeps the generator running unloaded to dissipate heat. 4. **Phase Sequence Protection:** Prevents connection if the phases (L1, L2, L3) are in the wrong order, which could damage 3-phase motors. --- ### 3. Wiring Diagram Concept (Simplified) The electronic module acts as the middleman between the power inputs and the mechanical switches. ```mermaid graph LR Utility[Utility Power] --> Sensor1[Voltage Sensor A] Generator[Generator Power] --> Sensor2[Voltage Sensor B] Sensor1 --> MCU[ATS-2-R Controller] Sensor2 --> MCU MCU --> Relays[Output Relays] Relays --> Mechanisms[Mechanical Contactors] ``` --- ### 4. Technical Specifications (General) While exact specs vary by manufacturer (e.g., Kutai or similar brands), typical electronic ratings include: * **Operating Voltage:** 80 to 290 VAC (Single Phase). * **Power Consumption:** < 5W. * **Sensing Accuracy:** ± 2%. * **Operating Temperature:** -20°C to +70°C.