The **M2RS-56-R2** is a high-performance, 2-phase hybrid bipolar stepper motor integrated with a high-resolution encoder. It is designed for precision motion control applications where closed-loop feedback is required to prevent position loss. --- ## 1. Core Technical Specifications The following table highlights the primary electrical and mechanical characteristics of the M2RS-56-R2: | Parameter | Specification | | :--- | :--- | | **Motor Type** | 2-Phase Hybrid Bipolar Stepper | | **Frame Size** | NEMA 23 (56mm) | | **Step Angle** | 1.8° (Full Step) | | **Holding Torque** | 2.0 Nm (approx. 283 oz-in) | | **Rated Current** | 4.0 A to 5.0 A | | **Phase Resistance** | ~0.45 Ω | | **Phase Inductance** | ~1.8 mH | | **Encoder Resolution** | 1000 lines (4000 counts/rev with quadrature) | --- ## 2. Key Electronic Components ### A. The Stepper Motor Section The motor utilizes a **hybrid design**, combining the features of Variable Reluctance and Permanent Magnet motors. * **Stator/Rotor:** Multi-toothed structure made of laminated silicon steel to reduce eddy current losses. * **Phase Windings:** Bipolar configuration (4 wires), allowing for higher torque at low speeds compared to unipolar motors. ### B. The Integrated Encoder The "R2" suffix typically denotes the inclusion of a high-resolution rotary encoder mounted on the rear shaft. * **Feedback Type:** Incremental Optical or Magnetic Encoder. * **Signals:** Provides A, B, and Index (Z) channels. * **Differential Output:** Usually supports RS422 differential signals (A+, A-, B+, B-) to minimize electromagnetic interference (EMI) in industrial environments. --- ## 3. Wiring and Connectivity The M2RS-56-R2 typically features two separate connectors or lead sets: ### Motor Power (4-Pin) | Color | Phase | | :--- | :--- | | **Black** | A+ | | **Green** | A- | | **Red** | B+ | | **Blue** | B- | ### Encoder Signal (Standard DB15 or Lead Wires) Includes wires for **VCC (+5V)**, **GND**, and the differential signal pairs (**A/B/Z**). --- ## 4. Application Context To operate this part effectively, it must be paired with a **Closed-Loop Stepper Driver** (such as the Leadshine CL or M5 series). The driver uses the encoder data to: 1. **Eliminate Stall:** It adjusts current in real-time to ensure the motor never loses steps. 2. **Reduce Heat:** It only applies the current necessary to move the load, rather than constant maximum current. 3. **Improve Smoothness:** Reduces resonance issues common in open-loop systems.