{"product_id":"b-r-x20dc4395-encoder-and-counter-module","title":"Module encodeur et compteur B\u0026R X20DC4395","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eX20DC4395 (X20DC4395)\u003c\/strong\u003e is a highly versatile digital counter and encoder interface module within the B\u0026amp;R X20 automation series. Engineered for complex motion control and high-speed signal acquisition, this module supports multiple operational modes, including SSI (Synchronous Serial Interface) absolute encoders, incremental AB encoders, event counters, and Pulse Width Modulation (PWM) signal generation. By consolidating these high-precision functions into a single slice, the X20DC4395 allows machine builders to optimize cabinet space while maintaining the nanosecond-level synchronization required for demanding industrial applications such as robotics, CNC machining, and automated assembly lines.\u003c\/p\u003e\n\u003ch3\u003eTechnical Configuration\u003c\/h3\u003e\n\u003cp\u003eThe module features a high degree of configuration flexibility, allowing users to define the hardware behavior through the software environment to suit specific application needs:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eEncoder Interfaces:\u003c\/strong\u003e Supports up to 2 SSI absolute encoders (24 V), 2 AB incremental encoders (24 V), or 4 AB incremental encoders (24 V).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCounter\/PWM Modes:\u003c\/strong\u003e Configurable for up to 8 independent event counters or 4 PWM output channels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTime Measurement:\u003c\/strong\u003e Includes specialized local time measurement functions, facilitating high-precision event stamping and interval monitoring independent of the main CPU cycle time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSignal Compatibility:\u003c\/strong\u003e Fully compatible with 24 V signal levels, ensuring robust noise immunity in electrically noisy industrial environments.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd data-row=\"1\"\u003e\u003cstrong\u003eFeature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-row=\"1\"\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-row=\"2\"\u003eModel\u003c\/td\u003e\n\u003ctd data-row=\"2\"\u003eX20DC4395\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-row=\"3\"\u003eBrand\u003c\/td\u003e\n\u003ctd data-row=\"3\"\u003eB\u0026amp;R\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-row=\"4\"\u003eModule Type\u003c\/td\u003e\n\u003ctd data-row=\"4\"\u003eDigital Counter\/Encoder Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-row=\"5\"\u003eInput Modes\u003c\/td\u003e\n\u003ctd data-row=\"5\"\u003e2x SSI, 2x\/4x AB Incremental, 8x Event Counter, 4x PWM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-row=\"6\"\u003eSupply Voltage\u003c\/td\u003e\n\u003ctd data-row=\"6\"\u003e24 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-row=\"7\"\u003eSpecial Functions\u003c\/td\u003e\n\u003ctd data-row=\"7\"\u003eLocal Time Measurement\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-row=\"8\"\u003eWeight\u003c\/td\u003e\n\u003ctd data-row=\"8\"\u003e0.3 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-row=\"9\"\u003eShipping Weight\u003c\/td\u003e\n\u003ctd data-row=\"9\"\u003e2 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eFAQs\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use the PWM function and the encoder inputs simultaneously?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe operational modes of the X20DC4395 are mutually exclusive based on the configuration profile selected in the B\u0026amp;R software. You must select the specific mode (e.g., SSI vs. PWM) during the initial project configuration.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the advantage of using local time measurement functions?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eLocal time measurement allows the module to capture events or signal transitions with a time resolution higher than the PLC scan cycle, providing superior accuracy for applications like high-speed sorting or precision position latching.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this module require external signal conditioning for SSI encoders?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo, the X20DC4395 is designed to interface directly with 24 V SSI absolute encoders, eliminating the need for intermediary signal conditioners or level shifters.\u003c\/p\u003e\n\u003ch3\u003eInstallation and Operational Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eShielding Requirements:\u003c\/strong\u003e Because encoder signals are sensitive to electromagnetic interference (EMI), always use shielded twisted-pair cabling. Ensure the shield is connected to the designated ground rail at the cabinet entry point using 360-degree contact EMC cable glands.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCable Lengths:\u003c\/strong\u003e For high-frequency AB incremental encoder signals, limit cable lengths to under 20 meters. If longer runs are required, ensure the signaling voltage drop remains within the module's specified tolerance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrounding and Noise:\u003c\/strong\u003e To maintain the precision of the counter functions, ensure a low-impedance ground path between the encoder housing and the machine chassis. Avoid routing encoder signal cables in parallel with high-voltage motor power leads or VFD output cables.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"B\u0026R","offers":[{"title":"Default Title","offer_id":53086367908203,"sku":"X20DC4395","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/x20dc4395-ta3o4faby4x.png?v=1776138180","url":"https:\/\/www.plcprotech.com\/fr\/products\/b-r-x20dc4395-encoder-and-counter-module","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}