The **EMMS-AS-100-S-HS-RMB** is a high-performance AC synchronous servo motor manufactured by Festo. This specific model is designed for precise motion control applications. Below is a detailed breakdown of its electronic and electromechanical components. --- ### 1. General Specifications The electronic performance of this motor is defined by its winding configuration and feedback systems. | Feature | Specification | | :--- | :--- | | **Motor Type** | AC Synchronous Servo Motor | | **Nominal Operating Voltage** | 565 V DC | | **Nominal Current** | 3.3 A | | **Peak Current** | 15.0 A | | **Nominal Power** | 1,844 W | | **Insulation Protection** | Class F (up to 155°C) | --- ### 2. Core Electronic Components #### A. The Encoder (Feedback System) The "R" in the product code signifies a **Multi-turn Absolute Encoder**. * **Technology:** Inductive or Optical sensing. * **Function:** It tracks the exact position of the rotor. Because it is "Absolute," the system remembers its position even after a power cycle, eliminating the need for a homing run. * **Resolution:** Typically high-bit resolution (e.g., 18-bit or higher) to ensure smooth torque delivery at low speeds. #### B. The Winding & Stator * **Phase:** 3-phase sine-wave brushless design. * **Winding Protection:** Includes an integrated temperature sensor (typically a **PTC or KTY88**). This sensor communicates with the motor controller to trigger a shutdown if the internal temperature exceeds safe limits, preventing winding burnout. #### C. The Holding Brake The "B" in the code indicates an integrated **Electronic Holding Brake**. * **Operating Principle:** Spring-applied, electromagnetically released. * **Voltage:** 24 V DC. * **Function:** When power is removed (either intentionally or during a power failure), the brake engages to hold the load in position. It is not designed for dynamic braking (stopping a moving load) but for static holding. --- ### 3. Connection Interface The motor uses standardized circular M-style connectors to separate power from sensitive signals. | Connection Type | Purpose | Pins/Wiring | | :--- | :--- | :--- | | **Power Connector** | Supplies 3-phase AC to the stator. | U, V, W, and PE (Ground). | | **Signal Connector** | Transmits encoder data and brake power. | Encoder signals, Temperature sensor, 24V Brake +/-. | --- ### 4. Part Number Breakdown (Nomenclature) Understanding the suffix helps identify the electronics: * **EMMS-AS**: Standard AC Synchronous Servo Motor. * **100**: Flange size (100mm). * **S**: Stacker length (Short). * **HS**: High Speed / Standard winding. * **R**: Absolute Encoder, Multi-turn. * **M**: Digital encoder protocol (e.g., Hiperface or EnDat). * **B**: Integrated Holding Brake. ---