The **EMMT-AS-80-S-LS-RMY** is a high-performance AC synchronous servo motor manufactured by **Festo**. It is designed for precise positioning and dynamic movement in industrial automation. Below is the detailed breakdown of its electronic and electrotechnical components. --- ### 1. General Specifications | Feature | Detail | | :--- | :--- | | **Motor Type** | AC Synchronous Servo Motor | | **Flange Size** | 80 mm | | **Length** | S (Short) | | **Winding Type** | LS (Low Speed / Specific Voltage optimized) | | **Output Connection** | R (Right-angle plug, rotatable) | | **Encoder Type** | MY (Digital absolute encoder, Multi-turn) | --- ### 2. Electronic Component Breakdown #### A. Encoder System (The "MY" Designation) This is the most critical electronic part of the motor. * **Technology:** It utilizes a **digital absolute encoder** with a **Hiperface DSL** (One Cable Technology) or similar high-speed serial interface. * **Multi-turn Capability:** It can track the motor's position across multiple revolutions without needing a battery backup (usually via gear-based or magnetic counting), ensuring the controller knows the exact position even after a power cycle. * **Resolution:** Provides high-resolution feedback (typically 18-24 bit) for extremely smooth velocity control and sub-micrometer positioning accuracy. #### B. Single-Cable Technology (OCT) The motor uses a hybrid electronic interface: * **Integration:** Power, brake control, and encoder signals are combined into a single physical cable/connector. * **Electronic Nameplate:** The encoder contains an internal memory chip that stores motor parameters (rated current, torque constant, etc.). When connected to a compatible drive (like the Festo CMMT-AS), the drive automatically configures itself. #### C. Stator and Winding (LS) * **LS (Low Speed/Voltage):** The electronic winding configuration is optimized for a specific Back-EMF constant. This ensures the motor operates efficiently within the voltage limits of its paired servo drive. * **Insulation:** Class 155 (F) thermal insulation, often protected by integrated **PTC or Pt1000 temperature sensors** to prevent electronic failure due to overheating. #### D. Integrated Holding Brake (Optional Variation) If equipped, the motor includes an electromagnetic brake: * **Voltage:** 24V DC. * **Function:** It is a "fail-safe" electronic component that locks the shaft when power is removed to prevent vertical loads from falling. --- ### 3. Electrical Performance Data | Parameter | Value (Approximate) | | :--- | :--- | | **Nominal Voltage** | 325 V DC / 565 V DC | | **Nominal Torque** | ~2.5 to 3.0 Nm | | **Peak Torque** | ~7.5 to 9.0 Nm | | **Protection Class** | IP67 (Housing and Plug) | --- ### 4. Connection Diagram Logic The M23 plug (rotatable 310°) handles the following electronic pinouts: 1. **Phase U, V, W:** Three-phase AC power. 2. **PE:** Protective Earth. 3. **Brake +/-:** 24V DC control. 4. **Data +/-:** Digital encoder feedback (DSL).