The **M2AMS-2B-R2/N** is a specific model of a digital panel meter, typically part of the **M2 Series** manufactured by **M-System** (now a subsidiary of MG CO., LTD). These devices are high-performance signal conditioners and indicators designed for industrial automation. Below is a breakdown of its electronic specifications and architecture. ### 1. Model Identification (Nomenclature) The part number translates to specific hardware configurations: | Code | Component | Description | | :--- | :--- | :--- | | **M2AMS** | Series Name | M2-Unit Signal Conditioner / Indicator | | **-2** | Output 1 | 4 – 20 mA DC | | **B** | Output 2 | 2 – 10 V DC (or custom voltage/current) | | **-R2** | Power Input | 100 – 240 V AC | | **N** | Standards | Non-CE (Standard Japanese/Global Industrial Spec) | --- ### 2. Key Electronic Specifications This device functions as a **Signal Transmitter with a Local Display**. It takes an input signal and provides two isolated analog outputs. #### A. Input Section * **Types:** It generally accepts standard DC signals (e.g., 4-20mA or 1-5V). * **Input Impedance:** High impedance for voltage inputs (~1MΩ) and low for current (~250Ω). #### B. Output Section (Dual Output) * **Isolation:** The input, output 1, output 2, and power supply are all isolated from each other (4-way isolation). * **Drive Capability:** Output 1 (Current) can typically handle a load resistance of up to $750 \Omega$. #### C. Power Supply * **Universal Input:** $100$ to $240$ V AC ($50/60$ Hz). * **Power Consumption:** Approximately $3$ to $5$ VA. --- ### 3. Display and User Interface The "MS" designation indicates the unit includes a front-panel display: * **Display Type:** 4-digit LED or LCD (depending on the specific revision). * **Configuration:** Users can scale the input (e.g., 4mA = 0.0, 20mA = 100.0) using front-facing buttons. * **Status Indicators:** LEDs for power and alarm status. --- ### 4. Technical Comparison Table | Feature | Specification | | :--- | :--- | | **Isolation Resistance** | 100 MΩ minimum at 500 V DC | | **Dielectric Strength** | 2000 V AC @ 1 minute (Input to Output to Power) | | **Operating Temperature** | -5 to +55 °C (23 to 131 °F) | | **Mounting** | DIN Rail Mounting | | **Connection** | M3.5 Screw Terminals | --- ### 5. Common Applications * **Signal Buffering:** Isolating a PLC input from a field sensor to prevent ground loops. * **Signal Conversion:** Converting a 4-20mA sensor signal into a 0-10V signal for an older controller. * **Local Monitoring:** Providing a digital readout of a process variable at the control cabinet door.