{"product_id":"triconex-3511-tmr-pulse-input-module-high-speed-pi","title":"Triconex 3511 TMR Pulse Input Module | High-Speed PI","description":"\u003ch3\u003e\u003cstrong\u003eProduct Description\u003c\/strong\u003e\u003c\/h3\u003e\n\u003ch4\u003e\u003cstrong\u003eOverview\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eTriconex 3511\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis a high-performance Pulse Input (PI) module designed for Triple Modular Redundant (TMR) safety systems. Engineered for high-speed monitoring applications, it accurately processes pulse signals from devices such as turbine flowmeters, rotary encoders, magnetic pickups, and proximity sensors. The module ensures precise frequency measurement and rapid response for safety-critical functions in turbines, compressors, and high-speed rotating machinery.\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eArchitecture and Design\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003e3511\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003euses a TMR architecture with three independent processing legs. Each leg measures the pulse input separately, and the system applies a 2-out-of-3 (2oo3) voting logic to guarantee reliable, fault-tolerant operation. Its design supports SIL 3 safety applications and provides galvanic isolation between channels and between field inputs and system logic to protect the controller from transients and electrical interference.\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003ePerformance Highlights\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eHigh-Speed Frequency Capture\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eDetects pulse signals from\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e20 Hz up to 20 kHz\u003c\/strong\u003e, covering low-speed sensors to high-speed turbine pickups\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eMeasurement accuracy ±0.01% of frequency\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eRapid update rate ensures fast response for overspeed and protection logic\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSignal Versatility\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eSupports NAMUR sensors, dry contacts, and voltage pulses (12–24 VDC)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eProgrammable debounce filters to ignore noise and false triggers\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCompatible with both passive (self-generating) and active (powered) sensors\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eFault Tolerance and Diagnostics\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eEach TMR leg independently counts and processes pulses; system remains operational if a single leg fails\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eContinuous self-testing verifies timing circuits and counters without interrupting operation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHot-swappable design allows replacement during operation to maximize uptime\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eIsolation and Protection\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e1500 VAC galvanic isolation between channels and system logic\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eBuilt-in protection against inductive kickback and electromagnetic interference common in turbomachinery\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch4\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/h4\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003cth align=\"left\"\u003eParameter\u003c\/th\u003e\n\u003cth align=\"left\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003eModel Number\u003c\/td\u003e\n\u003ctd align=\"left\"\u003e\u003cstrong\u003e3511\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003eModule Type\u003c\/td\u003e\n\u003ctd align=\"left\"\u003eTMR Pulse Input Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003eInput Channels\u003c\/td\u003e\n\u003ctd align=\"left\"\u003e8 Independent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003eFrequency Range\u003c\/td\u003e\n\u003ctd align=\"left\"\u003e20 Hz – 20 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003eInput Voltage (Min)\u003c\/td\u003e\n\u003ctd align=\"left\"\u003e1.0 V Peak-to-Peak (low frequency)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003eInput Voltage (Max)\u003c\/td\u003e\n\u003ctd align=\"left\"\u003e100 V Peak-to-Peak\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003eResolution\u003c\/td\u003e\n\u003ctd align=\"left\"\u003e24-bit pulse counting\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003eAccuracy\u003c\/td\u003e\n\u003ctd align=\"left\"\u003e±0.01% of reading\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003eUpdate Rate\u003c\/td\u003e\n\u003ctd align=\"left\"\u003e25–50 ms typical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003eIsolation\u003c\/td\u003e\n\u003ctd align=\"left\"\u003eChannel-to-channel and field-to-system, 1500 VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003eStatus Indicators\u003c\/td\u003e\n\u003ctd align=\"left\"\u003ePASS, FAULT, ACTIVE, Channel Status\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003eOperating Temp\u003c\/td\u003e\n\u003ctd align=\"left\"\u003e-40°C to +70°C (-40°F to +158°F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003eHumidity\u003c\/td\u003e\n\u003ctd align=\"left\"\u003e5%–95% non-condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch4\u003e\u003cstrong\u003eKey Application\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e3511\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis ideal for overspeed protection and high-speed monitoring in API 670-compliant turbine and compressor systems. Its ability to process pulses from 20 Hz to 20 kHz with millisecond response time ensures that safety-critical devices operate without delay.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch4\u003e\u003cstrong\u003eFAQ\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eQ1:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eHow many channels does the 3511 support?\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe module supports 8 configurable pulse input channels.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ2:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eWhat signal types can it process?\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eNAMUR sensors, dry contacts, and 12–24 VDC voltage pulses.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ3:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eCan the module interface with rotary encoders?\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eYes, it can process incremental encoder signals if frequency and voltage are within specifications.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ4:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eIs the module hot-swappable?\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eYes, the 3511 can be replaced while the system remains powered.\u003c\/p\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Triconex","offers":[{"title":"Default Title","offer_id":44130044674147,"sku":"3511","price":180.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0549\/2775\/3315\/files\/TRICONEX3511.jpg?v=1776739687","url":"https:\/\/precisemodule.com\/products\/triconex-3511-tmr-pulse-input-module-high-speed-pi","provider":"Precise Module Ltd.","version":"1.0","type":"link"}