The **EMMT-AS-60-L-HS-RMB** is a high-performance AC synchronous servo motor manufactured by **Festo**. It is designed for precise motion control applications, characterized by its "brushless" design and integrated electronic feedback systems. --- ### 1. Key Technical Specifications The following table outlines the primary electronic and electromechanical properties of this specific model: | Parameter | Specification | | :--- | :--- | | **Motor Type** | AC Synchronous Servo Motor | | **Flange Size** | 60 mm | | **Nominal Voltage** | 325 V DC (usually driven by 230V AC drives) | | **Nominal Torque** | ~ 2.1 Nm (varies by thermal conditions) | | **Peak Torque** | ~ 6.5 Nm | | **Max. Speed** | 6,000 RPM | | **Feedback System** | Absolute Encoder (Multi-turn) | | **Encoder Interface** | Hiperface DSL (Digital Single Cable) | | **Protection Class** | IP65 (housing and connection) | --- ### 2. Electronic Components & Features #### A. The Multi-turn Absolute Encoder (RMB) The **"RMB"** suffix indicates the specific feedback electronics: * **Absolute Sensing:** Unlike incremental encoders, this motor "remembers" its exact position even after a power failure. * **Multi-turn:** It tracks the number of full rotations (usually up to 4096 turns), eliminating the need for a homing sequence or limit switches upon startup. * **Digital Communication:** It uses a high-speed serial protocol to transmit position data to the motor controller. #### B. Single-Cable Technology (Hiperface DSL) This motor utilizes a modern electronic connection scheme: * **Integration:** Power, encoder signals, and brake control are combined into one single hybrid cable. * **Noise Immunity:** The digital feedback is less susceptible to electromagnetic interference (EMI) compared to older analog resolvers. * **Electronic Rating Plate:** The motor contains a chip that stores its parameters (current limits, torque constants). When connected to a Festo CMMT drive, the drive automatically reads these settings. #### C. Winding & Magnetics * **Neodymium Magnets:** High-energy permanent magnets on the rotor allow for a compact size with very high power density. * **Electronic Commutation:** Since there are no brushes, the switching of the phases (U, V, W) is handled electronically by the external Servo Drive (e.g., Festo CMMT-AS). #### D. Integrated Holding Brake The **"B"** in the part number indicates an integrated electronic holding brake: * **Function:** It is a spring-loaded brake that engages when power is removed (fail-safe). * **Control:** It is controlled via the 24V DC signal integrated into the motor cable. --- ### 3. Connection Pinout Logic The EMMT-AS series typically uses an M12 or M23 hybrid connector. Internally, the electronics are mapped as follows: ```yaml Pin Group: Power: U, V, W, PE (Earth) Signals: - Data+ / Data- (Encoder communication) - Brake+ / Brake- (24V DC control) ```