The **M2UDS2-AB-R2/Q** is a specific model within the **M2U Series** of industrial signal conditioners (transmitters) manufactured by **M-System**. This device is primarily used to isolate and convert DC input signals into standardized DC output signals for industrial automation and control systems. --- ### 1. Part Number Breakdown Understanding the suffix codes is essential for identifying the electronic specifications: | Code Segment | Description | Specific Detail | | :--- | :--- | :--- | | **M2UDS2** | Base Model | Universal DC Transmitter (Ultra-slim design) | | **-A** | Input Signal | 4 – 20 mA DC | | **-B** | Output Signal | 2 – 10 V DC | | **-R2** | Power Supply | 24 V DC (Operating range 24V ±10%) | | **-Q** | Special Option | Standardized "Quick Service" or quality specific marking | --- ### 2. Key Electronic Specifications These devices are designed for DIN-rail mounting and high-density installation. * **Isolation:** 3-way isolation (Input to Output to Power). This prevents ground loops and protects sensitive PLC/DCS equipment from electrical surges. * **Accuracy:** Typically ±0.1% of span. * **Response Time:** ≤ 0.5 seconds (0 – 90%). * **Insulation Resistance:** 100 MΩ or more with 500 V DC. * **Dielectric Strength:** 2000 V AC @ 1 minute (Input to output to power to ground). --- ### 3. Connection Diagram (General) The electronic terminals are usually mapped as follows: | Terminal No. | Function | Description | | :--- | :---: | :--- | | **1 & 2** | Output | Voltage Output (2 - 10V) | | **3 & 4** | Input | Current Input (4 - 20mA) | | **5 & 6** | Power | 24V DC Supply | --- ### 4. Circuit Protection Features The internal electronics of the M2UDS2-AB-R2 include: 1. **Overcurrent Protection:** Protects the input stage from excessive current loops. 2. **Surge Suppression:** Integrated components to handle line noise and transients common in industrial environments. 3. **Zero/Span Adjustment:** Potentiometers located on the front of the unit allow for fine-tuning the analog calibration without removing the device.