{"product_id":"kl5151-0021-beckhoff-bus-terminal-incremental-encoder-interface-24-v-dc-32-bit-counter","title":"KL5151-0021 | Beckhoff Bus Terminal Incremental Encoder Interface 24 V DC 32-Bit Counter","description":"\u003ch4\u003eDescription \u003c\/h4\u003e\n\u003cp data-start=\"101\" data-end=\"438\"\u003eThe Beckhoff KL5151-0021 is a 1-channel incremental encoder interface Bus Terminal designed for high-precision motion feedback in automation systems. Operating at 24 V DC, it supports quadrature decoding with 32-bit resolution and input frequencies up to 100 kHz, providing accurate position and speed measurement for industrial encoders.\u003c\/p\u003e\n\u003cp data-start=\"284\" data-end=\"574\" class=\"\"\u003e \u003c\/p\u003e\n\u003cp data-start=\"284\" data-end=\"574\" class=\"\"\u003e \u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications \u003c\/h4\u003e\n\u003ctable style=\"width: 99.964%;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 28.8943%;\"\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.9725%;\"\u003eNew\/Never Used Surplus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 28.8943%;\"\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.9725%;\"\u003eBeckhoff\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 28.8943%;\"\u003e\u003cstrong\u003eCategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.9725%;\"\u003eIndustrial Automation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 28.8943%;\"\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.9725%;\"\u003eKL5151-0021\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 28.8943%;\"\u003e\u003cstrong\u003eSubcategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.9725%;\"\u003eBus Terminal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 28.8943%;\"\u003e\u003cstrong\u003eFunction\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.9725%;\"\u003e1-channel incremental encoder interface\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 28.8943%;\"\u003e\u003cstrong\u003eTechnology\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.9725%;\"\u003eIncremental encoder interface, EN 61131-2 type 1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 28.8943%;\"\u003e\u003cstrong\u003eNumber of Channels\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.9725%;\"\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 28.8943%;\"\u003e\u003cstrong\u003eEncoder Connection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.9725%;\"\u003eA, B, C, gate\/latch, 24 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 28.8943%;\"\u003e\u003cstrong\u003eSensor Inputs\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.9725%;\"\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 28.8943%;\"\u003e\u003cstrong\u003eEncoder Operating Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.9725%;\"\u003e24 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 28.8943%;\"\u003e\u003cstrong\u003eCounter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.9725%;\"\u003e32-bit binary counter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 28.8943%;\"\u003e\u003cstrong\u003eLimit Frequency\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.9725%;\"\u003e400,000 increments\/s (with 4-fold evaluation)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 28.8943%;\"\u003e\u003cstrong\u003eQuadrature Decoder\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.9725%;\"\u003e4-fold evaluation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 28.8943%;\"\u003e\u003cstrong\u003eZero-Pulse Latch\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.9725%;\"\u003e32-bit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 28.8943%;\"\u003e\u003cstrong\u003eSupported Commands\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.9725%;\"\u003eRead, set, enable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 28.8943%;\"\u003e\u003cstrong\u003eSignal Levels\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.9725%;\"\u003e“0”: \u0026lt; 5 V DC, “1”: \u0026gt; 15 V DC (typ. 5 mA)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 28.8943%;\"\u003e\u003cstrong\u003ePower Supply\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.9725%;\"\u003e24 V DC (-15%\/+20%)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 28.8943%;\"\u003e\u003cstrong\u003eCurrent Consumption (K-bus)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.9725%;\"\u003eTyp. 40 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 28.8943%;\"\u003e\u003cstrong\u003eBit Width in Process Image\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.9725%;\"\u003e2 × 32-bit data, 2 × 8-bit control\/status\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 28.8943%;\"\u003e\u003cstrong\u003eElectrical Isolation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.9725%;\"\u003e500 V (K-bus\/signal voltage)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 28.8943%;\"\u003e\u003cstrong\u003eProtection Class\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.9725%;\"\u003eIP20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 28.8943%;\"\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.9725%;\"\u003eApprox. 50 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 28.8943%;\"\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.9725%;\"\u003e-25°C to +60°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 28.8943%;\"\u003e\u003cstrong\u003eStorage Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.9725%;\"\u003e-40°C to +85°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 28.8943%;\"\u003e\u003cstrong\u003eRelative Humidity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.9725%;\"\u003e95%, non-condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003e\u003cbr\u003e\u003c\/h4\u003e\n\u003ch4\u003eInformation About \u003cspan data-sheets-root=\"1\"\u003eKL5151-0021\u003c\/span\u003e\n\u003c\/h4\u003e\n\u003cp\u003eThe Beckhoff KL5151-0021 Bus Terminal provides a high-performance interface for incremental encoders in automation and motion control systems. It captures encoder signals such as A, B, and C phases as well as gate and latch inputs, converting them into digital position and speed data through a 32-bit counter. The terminal supports quadrature decoding with 4-fold evaluation, allowing it to detect both rotation direction and fine position changes with high accuracy. Operating on a 24 V DC supply, it handles input frequencies up to 100 kHz (400,000 increments\/s), making it suitable for fast-moving applications. The terminal integrates seamlessly into Beckhoff’s modular I\/O system via the K-bus, providing reliable communication and synchronization with PLCs. Its compact design, robust electrical isolation, and flexible command functions enable precise motion tracking and control across diverse automation environments.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eIncremental Encoder Interface: Supports one encoder channel with A, B, and C signals, suitable for industrial motion feedback.\u003c\/li\u003e\n\u003cli\u003eHigh-Resolution Counting: 32-bit counter ensures fine-grained measurement for precise position detection.\u003c\/li\u003e\n\u003cli\u003eFast Signal Processing: Handles up to 400,000 increments per second with 4-fold quadrature decoding for accurate speed and direction sensing.\u003c\/li\u003e\n\u003cli\u003eConfigurable Operation: Offers read, set, and enable commands for flexible control and parameterization via the automation controller.\u003c\/li\u003e\n\u003cli\u003eZero-Pulse Latching: Captures reference positions reliably using a 32-bit zero-pulse latch function.\u003c\/li\u003e\n\u003cli\u003eRobust Signal Handling: Compatible with 24 V HTL signals per EN 61131-2 Type 1 specification, ensuring noise immunity.\u003c\/li\u003e\n\u003cli\u003eElectrical Isolation: 500 V separation between K-bus and signal voltage protects the control system from field disturbances.\u003c\/li\u003e\n\u003cli\u003eCompact Modular Integration: Designed for K-bus systems, simplifying installation and scalability within automation architectures.\u003c\/li\u003e\n\u003cli\u003eReliable Performance: Operates across a wide temperature range from -25°C to +60°C for demanding industrial environments.\u003c\/li\u003e\n\u003cli\u003eLow Power Consumption: Efficient design draws only 40 mA from the K-bus, reducing system load.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe KL5151-0021 delivers the reliability and precision required for position sensing, speed measurement, and feedback integration in industrial motion control applications.\u003c\/p\u003e","brand":"Beckhoff","offers":[{"title":"Default Title","offer_id":49105081565440,"sku":"KL5151-0021","price":1024.59,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0388\/5331\/2557\/files\/kl5151_ks5151__web_preview.png?v=1785539687","url":"https:\/\/alotechparts.com\/products\/kl5151-0021-beckhoff-bus-terminal-incremental-encoder-interface-24-v-dc-32-bit-counter","provider":"Alo Tech Solutions","version":"1.0","type":"link"}