The **M2VS-C1-R2** is a high-performance **Mini-M series signal conditioner** (isolator) manufactured by **M-System**. Its primary function is to accept a DC voltage input and provide an isolated DC voltage or current output, typically used in industrial automation to prevent ground loops and protect PLC/DCS inputs. --- ### 1. Model Code Breakdown The model number specifies the exact hardware configuration of the device: | Segment | Code | Description | | :--- | :--- | :--- | | **Model** | **M2VS** | Ultra-slim Signal Conditioner (Input Loop Powered) | | **Input** | **C1** | 0 – 1 V DC (Input Resistance 1 MΩ min.) | | **Output** | **R** | 4 – 20 mA DC (Load resistance 550 Ω max.) | | **Power** | **2** | 24V DC Power Supply | --- ### 2. Key Electronic Specifications The internal circuitry is designed for high precision and electrical isolation. * **Isolation Type:** 3-way isolation (Input to Output to Power). * **Isolation Resistance:** 100 MΩ minimum at 500V DC. * **Dielectric Strength:** 2000V AC @ 1 minute (Input to output to power to ground). * **Accuracy:** ±0.1% of span. * **Temperature Coefficient:** ±0.015% per °C (±0.008% per °F). * **Response Time:** ≤ 0.5 seconds (0 – 90%). --- ### 3. Connection Diagram (Terminal Layout) The unit uses a plug-in socket base (usually the M2-BS) for easy DIN rail mounting and wiring. | Terminal No. | Function | Description | | :--- | :--- | :--- | | **1** | Input (+) | Positive DC Voltage Input | | **2** | Input (-) | Negative DC Voltage Input | | **4** | Output (+) | Positive DC Current Output | | **5** | Output (-) | Negative DC Current Output | | **7** | Power (U) | +24V DC | | **8** | Power (V) | 0V DC | --- ### 4. Physical Characteristics * **Construction:** Slim-line plug-in structure. * **Housing Material:** Flame-resistant resin (Black). * **Adjustments:** Front-facing Zero and Span adjustments (multi-turn potentiometers) for field calibration. * **Status Indicator:** Green LED indicates power supply status. --- ### 5. Application Example In an industrial environment, the M2VS-C1-R2 is used to convert a low-voltage sensor signal (0-1V) into a robust 4-20mA current loop. This is critical for: 1. **Signal Conversion:** Adapting non-standard sensor ranges to standard PLC inputs. 2. **Noise Mitigation:** The 3-way isolation stops electrical noise from traveling from the field sensor to the controller. 3. **Signal Boosting:** Converting voltage to current to allow for long-distance transmission without voltage drop issues.