{"product_id":"bently-nevada-3500-50-tachometer-module-for-3500-system","title":"Bently Nevada 3500\/50 Tachometer Module for 3500 System","description":"\u003ch3\u003e\u003cstrong\u003eProduct Description\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eBently Nevada 3500\/50\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eTachometer Module is a dual-channel rotational speed monitoring module engineered for use within the Bently Nevada 3500 Series Machinery Protection System. The module continuously measures shaft rotational speed, rotor acceleration, and shaft rotation direction using proximity probes or compatible magnetic pickup sensors.\u003c\/p\u003e\n\u003cp\u003eDesigned for critical turbomachinery and rotating equipment applications, the module processes real-time speed signals and compares them against configurable alarm thresholds defined through the 3500 Rack Configuration Software. The module also supports conditioned Keyphasor® signal distribution through the rack backplane, reducing the requirement for additional signal interface hardware.\u003c\/p\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eBently Nevada 3500\/50\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003esupports independent channel operation and provides flexible monitoring modes for speed alarming, acceleration analysis, reverse rotation indication, and zero-speed detection.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eDual independent tachometer input channels\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCompatible with proximity probes and magnetic pickup sensors\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eReal-time shaft speed and rotor acceleration monitoring\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eReverse rotation indication capability\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eConfigurable alarm thresholds and speed bands\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eIntegrated peak speed and reverse rotation event storage\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eBuffered transducer outputs available on front panel\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eKeyphasor® signal conditioning and backplane distribution\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eLED diagnostics for module condition and communication status\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eRack-based configuration through 3500 software platform\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003ctable class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003cth class=\"last:pe-10\"\u003eParameter\u003c\/th\u003e\n\u003cth class=\"last:pe-10\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eTachometer Monitoring Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries\u003c\/td\u003e\n\u003ctd\u003e3500 Machinery Protection System\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChannels\u003c\/td\u003e\n\u003ctd\u003e2 Independent Channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupported Sensors\u003c\/td\u003e\n\u003ctd\u003eProximity Probes, Magnetic Pickups\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage Range\u003c\/td\u003e\n\u003ctd\u003e+10 VDC to –24 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandard Input Impedance\u003c\/td\u003e\n\u003ctd\u003e20 kΩ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTMR Input Impedance\u003c\/td\u003e\n\u003ctd\u003e40 kΩ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInternal Barrier Impedance\u003c\/td\u003e\n\u003ctd\u003e7.15 kΩ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBuffered Outputs\u003c\/td\u003e\n\u003ctd\u003e1 Coaxial Output per Channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTypical Power Consumption\u003c\/td\u003e\n\u003ctd\u003e5.8 Watts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAlarm Functions\u003c\/td\u003e\n\u003ctd\u003eSpeed, Speed Band, Acceleration, Reverse Rotation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConfiguration Method\u003c\/td\u003e\n\u003ctd\u003e3500 Rack Configuration Software\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFront Panel Indicators\u003c\/td\u003e\n\u003ctd\u003eOK, TX\/RX, Bypass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eData Retention\u003c\/td\u003e\n\u003ctd\u003ePeak-Hold Speed and Rotation Events\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003cstrong\u003eOperating Modes\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe module can be configured in several monitoring combinations depending on machine protection requirements:\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eSpeed Monitoring with Alarm Setpoints and Speed Band Detection\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSpeed Monitoring with Zero-Speed Notification\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSpeed Monitoring with Rotor Acceleration Alarming\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSpeed Monitoring with Reverse Rotation Detection\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eInput and Signal Compatibility\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe module accepts dynamic pulse signals from:\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eEddy current proximity probes\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eMagnetic pickup transducers\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eMagnetic pickup sensors are supported for standard speed measurements; however, they are not recommended for applications requiring highly accurate low-speed detection, reverse rotation analysis, or zero-speed monitoring due to reduced signal edge quality at low rotational velocities.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eApplication Areas\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eTypical applications include:\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eSteam turbines\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eGas turbines\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCompressors\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003ePumps\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eMotors\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eGearboxes\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eIndustrial rotating machinery\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003ePower generation equipment\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eEngineering Notes\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eBently Nevada 3500\/50\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis intended for machinery condition monitoring and alarm annunciation. It is not designed to function as an independent overspeed trip device or closed-loop speed control system.\u003c\/p\u003e\n\u003cp\u003eProtective shutdown applications requiring SIL-rated or redundant overspeed protection should use dedicated overspeed systems compliant with applicable machinery safety standards.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eFAQ\u003c\/strong\u003e\u003c\/h3\u003e\n\u003ch3\u003e\u003cstrong\u003eCan the 3500\/50 module detect reverse shaft rotation?\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eYes. The module supports reverse rotation indication when configured with compatible proximity probe inputs.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eDoes the module support magnetic pickup transducers?\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eYes. Magnetic pickups are supported for standard speed monitoring applications, although proximity probes are preferred for low-speed and directional measurements.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eCan the module replace a dedicated Keyphasor module?\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eIn many applications, yes. The module can distribute conditioned Keyphasor® signals through the 3500 rack backplane.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eIs the module suitable for overspeed trip protection?\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eNo. The module is intended for monitoring and alarm indication only and should not be used as the primary overspeed shutdown system.\u003c\/p\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":44112749789272,"sku":"3500\/50","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0670\/2039\/0488\/files\/350050-04-011.jpg?v=1779184078","url":"https:\/\/www.industriaxplc.com\/products\/bently-nevada-3500-50-tachometer-module-for-3500-system","provider":"IndustriaX Limited","version":"1.0","type":"link"}