### W2VS-111-R Product Overview The **W2VS-111-R** is a specific model within the **W2 Series** of signal conditioners manufactured by **M-System**. It is a ultra-slim, rack-mounted signal splitter designed to take one analog DC input and provide two isolated analog DC outputs. --- ### Key Technical Specifications | Feature | Specification | |:---|:---| | **Device Type** | Signal Splitter (Transmitter) | | **Input Signal** | 4 to 20 mA DC | | **Output 1** | 4 to 20 mA DC | | **Output 2** | 4 to 20 mA DC | | **Power Input** | 24V DC | | **Isolation** | 3-way isolation (input to output 1 to output 2 to power) | | **Mounting** | Surface or DIN rail | | **Response Time** | ≤ 0.5 seconds (0 – 90%) | --- ### Core Electronic Components & Architecture The W2VS-111-R utilizes several critical electronic stages to ensure signal integrity and safety: #### 1. Input Processing Circuit The input stage features a low-impedance shunt resistor to convert the 4-20mA current loop into a voltage signal. It often includes surge protection to prevent damage from line spikes. #### 2. Galvanic Isolation (The "1-1-1" Configuration) The "111" in the part number signifies the specific input/output configuration, but functionally, the device relies on **Optical or Transformer Isolation**: * **Safety:** It prevents ground loops between the field instrument and the PLC/DCS. * **Reliability:** High-frequency noise on the input side is filtered out and not passed to the outputs. #### 3. Dual Output Drivers The internal circuitry splits the processed signal into two independent paths. Each path has its own operational amplifier (Op-Amp) and current-regulating transistor to ensure that a load change on Output 1 does not affect the signal on Output 2. #### 4. DC-DC Converter Because it is a 4-port isolated device, it contains a small internal high-frequency DC-DC converter. This converts the 24V DC power input into separate, isolated power rails for the input side and each output side. --- ### Applications * **Redundancy:** Sending one sensor signal to both a local display and a remote SCADA system simultaneously. * **Signal Conversion:** Converting a high-impedance signal into two low-impedance signals for long-distance transmission. * **Impedance Matching:** Allowing a single 4-20mA loop to drive two separate devices that might exceed the voltage compliance of the original transmitter.