The **M2UDS2-FW2-R2** is a specific model within the M2UDS series, typically associated with **M-System (now MG CO., LTD.)**. It is a **Digital Speed Monitor** or **Pulse-to-Analog Transducer**. Below is a detailed breakdown of its electronic specifications and functionalities. --- ### ## 1. Product Overview The M2UDS2-FW2-R2 is a plug-in signal conditioner designed to accept pulse frequency signals (from flow meters, encoders, or proximity switches) and convert them into standardized analog signals or contact outputs. ### ## 2. Model Number Breakdown | Code | Meaning | | :--- | :--- | | **M2UDS2** | Series Name: Digital Speed Monitor (Plug-in type) | | **FW2** | Input Range/Type: Typically indicates a specific Frequency Range (e.g., 0–10 kHz) | | **R** | Power Input: 24V DC | | **2** | Output 2: Often signifies a dual-output configuration (e.g., 4-20mA DC) | --- ### ## 3. Technical Specifications #### ### Input Section * **Pulse Input:** Accepts various pulse types (Open collector, Voltage pulses, or Dry contacts). * **Detection Level:** Adjustable sensitivity to filter out noise. * **Frequency Range:** Configurable via internal DIP switches or PC software. #### ### Output Section * **Analog Output:** Converts frequency to a linear 4-20mA or 0-10V signal. * **Alarm Outputs:** Often includes two relay contact outputs for High/Low speed alarms. * **Display:** Features a 4-digit LED display on the front panel to monitor the current frequency or percentage. #### ### General Characteristics | Feature | Specification | | :--- | :--- | | **Supply Voltage** | 24V DC (±10%) | | **Isolation** | 3-way isolation (Input to Output to Power) | | **Dielectric Strength** | 2000V AC @ 1 minute | | **Mounting** | DIN Rail or Surface Mount via Socket | | **Response Time** | $\leq$ 0.5 seconds + 1 cycle of input frequency | --- ### ## 4. Wiring Diagram Representation To wire this unit, you typically follow this logic: ```text Terminal Function [1] Output 1 (+) [2] Output 1 (-) [3] Output 2 (+) / Alarm [4] Output 2 (-) / Alarm [5] Input (+) [6] Input (-) [7] Power Supply (+) 24V DC [8] Power Supply (-) 0V ``` --- ### ## 5. Key Electronic Features * **Microprocessor-Based:** High accuracy and stability compared to older analog frequency converters. * **Filtering:** Built-in digital filtering to handle irregular pulse intervals. * **Burnout Protection:** Can be set to output a specific value if the input signal is lost.