{"product_id":"b-r-x20hb1881-x20-system-fiber-optic-hub-expansion-module","title":"B\u0026R X20HB1881 X20 System Fiber Optic Hub Expansion Module","description":"\u003ch3\u003eTechnical Description and Network Application\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eX20HB1881 (X20HB1881)\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis an industrial-grade fiber optic hub expansion module designed for the modular B\u0026amp;R X20 System platform. Engineered to extend high-speed Ethernet communication over long physical distances, this module excels in decentralized processing environments such as wastewater treatment facilities, multi-building manufacturing hubs, and open-pit mining operations. It integrates one 100 BASE-FX hub interface designed for multimode fiber optic cabling, providing an operational transmission range of up to 2 km without signal degradation. By converting electrical bus signals into optical signals, the module provides complete electrical isolation between the power supply and the Ethernet network. This design choice shields the core automation infrastructure from ground-loop currents, high-voltage surges, and severe electromagnetic interference (EMI).\u003c\/p\u003e\n\u003ch3\u003eNetwork Architecture and Interface Logic\u003c\/h3\u003e\n\u003cp\u003eOperating at a deterministic data transfer rate of 100 Mbit\/s, this module features a physical interface equipped with one duplex LC female connector for stable fiber optic alignment. The module hardware supports full hot-swapping capabilities, allowing maintenance personnel to replace the component during active system operation without disrupting the communication link of adjacent I\/O slices. Onboard diagnostic arrays feature clear LED indicators that display real-time updates for overall module status and active bus function. Built for low thermal signature operations, the module draws a maximum power consumption of 1.45 W (older revisions prior to DO draw up to 1.65 W) from the system backplane bus, maintaining low internal heat build-up inside the assembly rack.\u003c\/p\u003e\n\u003ch3\u003ePerformance and Network Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003ctd\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eEngineered Specification\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eX20HB1881\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eB\u0026amp;R (Bernecker + Rainer)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eModule Category\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eX20 System Communication Hub\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eInterface Port\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1x 100 BASE-FX Hub\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eConnector Variant\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1x Female Duplex LC\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eMedia Type\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eMultimode Fiber Optic Cable\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eMaximum Transmission Distance\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eUp to 2 km\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eData Transfer Speed\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e100 Mbit\/s\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eElectrical Isolation\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eEthernet network isolated from power supply\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eHot Swap Support\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eYes (Fully hot swap capable)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003ePower Dissipation\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eMax. 1.45 W (Revisions prior to DO: Max. 1.65 W)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eHardware Diagnostics\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eOnboard LEDs for Module Status and Bus Function\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eAustria\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eGross Shipping Weight\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1.5 kg (Enclosed in electro-static discharge shielding)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eEngineering Integration FAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhat are the specific advantages of using the fiber optic X20HB1881 over standard copper RJ45 modules?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eStandard copper Ethernet cables are limited to 100-meter runs and are susceptible to electromagnetic noise from high-power variable frequency drives (VFDs) and heavy machinery. The X20HB1881 utilizes multimode fiber, extending the network range up to 2 km while remaining completely immune to industrial EMI, cross-talk, and lightning-induced voltage surges.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes hot-swapping the X20HB1881 interrupt the communication network of other modules?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. The X20 backplane architecture allows the X20HB1881 to be extracted and inserted while the rest of the rack remains powered. However, any active fiber optic data communication routed directly through this specific module will halt until the replacement card is seated and initialized.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan this module be paired with single-mode fiber optic cables?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. The optical transceiver inside the X20HB1881 is tuned exclusively for the wave characteristics and core diameters of multimode fiber optic cabling. Forcing a connection with single-mode fiber will cause severe optical attenuation and communication failure.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eField Commissioning and Optoelectronic Guidelines\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eOptical Interface Protection and Cleanliness:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eAirborne dust particles and finger oils can block the small optical apertures of the duplex LC connector. Keep the protective rubber dust caps installed at all times until the field cables are ready for final insertion. Clean the fiber ferrule tips with a designated industrial fiber optic cleaning tool prior to insertion.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eFiber Optic Bend Radius Limits:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eWhen routing the multimode fiber optic cables inside the electrical enclosure, strictly adhere to the manufacturer's specified minimum bend radius (typically a minimum of 20 times the cable diameter under tension). Sharp bends will cause micro-fractures in the glass core, leading to high signal loss and intermittent packet drops.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eBackplane Seating and Alignment:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eWhen taking advantage of the hot-swap capability, slide the module smoothly into the X20 base terminal block. Ensure that the integrated locking clips latch securely onto the rail to prevent mechanical vibration from shifting the optical transceiver relative to the backplane connection.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"B\u0026R","offers":[{"title":"Default Title","offer_id":53086370857323,"sku":"X20HB1881","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/x20hb1881-ncsqgvciju1.png?v=1776138201","url":"https:\/\/www.plcprotech.com\/products\/b-r-x20hb1881-x20-system-fiber-optic-hub-expansion-module","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}