The **M2SES2-AD-R/N** is a specific model within the **M2SES2 series** of high-performance, ultra-slim signal conditioners (transducers) manufactured by **M-System**. This device is primarily used in industrial automation to convert one type of electrical signal into another while providing galvanic isolation. --- ## 1. Technical Specification Breakdown The suffix `AD-R/N` defines the power supply, input/output configuration, and specific terminal types. | Feature | Specification | Description | |:---|:---|:---| | **Model Type** | M2SES2 | Ultra-slim Signal Conditioner (Splitter) | | **Input (A)** | 4 – 20 mA DC | Standard industrial current loop | | **Output 1 (D)** | 0 – 10 V DC | Voltage output | | **Output 2 (R)** | 1 – 5 V DC | Voltage output (Secondary) | | **Power Supply (/N)** | 100 – 240 V AC | Universal AC power input | | **Mounting** | DIN Rail | Standard industrial rail mounting | --- ## 2. Core Electronic Components & Architecture The device is built using several distinct electronic stages to ensure signal integrity: ### A. Input Stage (Current Shunt) Since the input is 4-20mA, the internal circuit utilizes a precision **Shunt Resistor** (typically 250Ω). This converts the current into a proportional voltage that the internal processing circuitry can read. ### B. Galvanic Isolation (Optical/Transformer) To prevent ground loops and protect sensitive PLC/DCS equipment, the M2SES2 uses: * **Opto-couplers** or **Isolation Transformers**: These physically separate the input, output, and power circuits. * **Isolation Rating**: Usually provides up to 2000V AC isolation. ### C. Signal Splitting & Amplification The "S2" in the model name indicates a **Dual Output (Splitter)**. The internal operational amplifiers (Op-Amps) take the isolated signal and branch it into two independent output stages. * **Output 1:** Scaled for 0-10V. * **Output 2:** Scaled for 1-5V. ### D. Power Supply Unit (PSU) The `/N` designation indicates an internal **Switch-Mode Power Supply (SMPS)**. It rectifies the 100-240V AC input into low-voltage DC (typically 15V or 24V) to power the internal semiconductors. --- ## 3. Key Electronic Characteristics * **Accuracy:** Generally $\pm0.1\%$ of span. * **Temperature Coefficient:** $\pm0.015\%$ per degree Celsius, ensuring stability in hot control panels. * **Response Time:** $\leq 0.5$ seconds (time required for the output to reach 90% of the final value). * **Zero/Span Adjustment:** Multi-turn potentiometers located on the front panel allow for fine-tuning the analog output voltages. --- ## 4. Connection Diagram (General) ```text TERMINALS: [1] Power (L) [5] Output 1 (+) [9] Input (+) [2] Power (N) [6] Output 1 (-) [10] Input (-) [3] Unused [7] Output 2 (+) [4] Ground [8] Output 2 (-) ``` ---