The **RTS-2D4-R/E** is a specific model of an **Incremental Rotary Encoder**, typically associated with industrial automation brands like *Nemicon* or compatible high-precision manufacturers. It is designed to convert the angular position or motion of a shaft into analog or digital signals. --- ## 1. Technical Specifications Table The electronic characteristics of the RTS series are summarized below: | Feature | Specification | Details | | :--- | :--- | :--- | | **Resolution** | 200 Pulses Per Revolution (PPR) | Indicated by the "2" in the model code (200). | | **Output Phase** | A, B, and Z phases | "D" usually signifies three-channel output. | | **Voltage Supply** | 5V to 24V DC | Common operational range for industrial PLC/MCU. | | **Output Type** | Line Driver / Totem Pole | "R" often denotes a Line Driver (RS-422 compliant). | | **Connection** | E (Cable Type) | "E" typically refers to the exit type (Rear/End cable). | | **Max Frequency** | 100 kHz | Maximum response speed of the internal circuitry. | --- ## 2. Key Electronic Components The internal "electronic parts" of this encoder consist of four primary stages: ### A. The Optical Sensor Array * **LED Emitter:** A high-intensity infrared LED that shines through a coded disk. * **Photo-detector IC:** A specialized integrated circuit that captures the light pulses. In the RTS-2D4, this is usually an ASIC (Application Specific Integrated Circuit) that handles light-to-current conversion. ### B. Signal Conditioning Circuitry * **Schmitt Trigger:** Internally, the sine-wave signals from the photo-detector are passed through a Schmitt trigger to convert them into clean, square-wave pulses. This prevents "jitter" or false counts caused by electrical noise. ### C. Output Driver Stage * **Differential Line Driver (RS-422):** Since this is the "R" variant, it utilizes a differential output. Instead of a single wire for Phase A, it provides `A` and `A-not` (inverted). * **Protection Diodes:** Built-in protection against reverse polarity and short-term overvoltage. --- ## 3. Wiring and Phase Logic Standard electronic wiring for the RTS-2D4-R/E follows industrial color coding (though you should verify with the specific datasheet): | Wire Color | Signal | Description | | :--- | :--- | :--- | | **Red** | Vcc | Power Supply (+5V to +24V) | | **Black** | GND | 0V Common | | **White** | Phase A | Main pulse signal | | **Green** | Phase B | 90° Offset (determines direction) | | **Yellow** | Phase Z | Index pulse (once per revolution) | | **Shield** | FG | Frame Ground (Noise reduction) | --- ## 4. Operational Logic (Quadrature) The electronics use **Quadrature Output**. By reading the phase shift between Phase A and Phase B, the receiving controller (PLC or Arduino) can determine the direction of rotation: * **A leads B:** Clockwise rotation. * **B leads A:** Counter-clockwise rotation.