{"product_id":"3500-50-bently-nevada-tachometer-module-3500-machinery-protection-system","title":"3500\/50 Bently Nevada Tachometer Module 3500 Machinery Protection System","description":"\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eBently Nevada 3500\/50\u003c\/strong\u003e, also cataloged as the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e3500\/50\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eTachometer Module, operates as a dedicated hardware component for rotor speed processing and overspeed protection within the 3500 Machinery Protection System. This module executes signal acquisition from proximity probes and magnetic pickups, performing frequency-to-voltage conversion to determine shaft rotative speed, rotor acceleration, and direction of rotation through real-time logic execution.\u003c\/p\u003e\n\u003ch3\u003eModule Configuration and Logic Mapping\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eThe 3500\/50 provides two independent input channels for speed measurement.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eInternal Zener barriers facilitate direct connection to transducers located in hazardous zones without requiring external galvanic isolation hardware.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eProgrammable alarm logic handles Zero Speed, Reverse Rotation, and Speed Band thresholds.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eBuffered transducer signals are routed through the I\/O module for external diagnostic equipment connectivity.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Performance Parameters\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\u003eSpecification\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eModel\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e3500\/50\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eBrand\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eBently Nevada\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eOrigin\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eUSA\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eWeight\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0.9 kg\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eShipping Dimensions\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e30 cm x 25 cm x 10 cm\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eOperating Temp\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e-30 deg C to 65 deg C\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003ePower Consumption\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e5.8 W\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eSpeed Range\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1 rpm to 99,999 rpm\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eMeasurement Accuracy\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e+\/- 0.01% of measured value (static)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eChannel Capacity\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e2 independent channels\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eInput Compatibility\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eProximity Probes, Magnetic Pickups (Passive)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eSignal Integrity and Rotor Dynamics\u003c\/h3\u003e\n\u003cp\u003eThe 3500\/50 module utilizes precision eddy-current probe scaling to ensure linear response across the input signal range. It monitors gap voltage validation against -10 VDC targets to confirm probe health and sensor-to-target distance. During signal acquisition, the module employs cross-talk suppression techniques to isolate inputs from electromagnetic interference, maintaining accurate rotor dynamics analysis. Input signals are processed through internal filtering to minimize noise, ensuring that speed measurements reflect the true mechanical state of the rotating machinery.\u003c\/p\u003e\n\u003ch3\u003ePackage Contents\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e1 x 3500\/50 Tachometer Module\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e1 x Discrete Internal Barrier I\/O Module\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e1 x Installation and Configuration Manual\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eMounting and Grounding Procedures\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eMount the module in any available slot of the 3500 Series rack, ensuring backplane connector engagement.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eEnsure that the I\/O module is firmly secured to the rack rear chassis using the integrated thumb screws.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eShielded cabling must be used for all transducer inputs; terminate shield drains at the designated I\/O common ground lug.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eVerify that the internal barrier grounding bar is connected to a dedicated safety ground to maintain intrinsic safety compliance.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Query Resolution\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eDoes the module support hot-swapping? Yes, the 3500\/50 is designed for insertion and removal while the rack is powered without affecting adjacent modules.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat is the purpose of the buffer outputs? The buffered outputs provide an unconditioned raw signal for use with external oscilloscopes or portable data collectors.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCan the module be used with non-Bently Nevada transducers? While optimized for Bently Nevada sensors, it supports standard passive magnetic pickups within specified voltage ranges.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHow is the input signal filtered? The module applies programmable digital filters to eliminate high-frequency noise and jitter from the tachometer signal.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eIs external power required for the transducers? The module provides the necessary transducer excitation voltage internally for proximity probe operation.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat happens during a power loss? The module maintains an internal fail-safe state, triggering loss-of-signal alarms to the rack interface module.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eAre the speed alarms latched? Alarms are user-configurable as latched or non-latched, depending on the specific machinery protection strategy.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDoes the firmware allow remote upgrades? Firmware updates are performed via the 3500 Configuration Software through the Rack Interface Module (RIM) connection.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":45518893121709,"sku":"3500\/50","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/1613\/9181\/files\/bently-nevada-3500-50-discrete-internal-barrier-i-o-module-5apzlz2kvad.jpg?v=1782437912","url":"https:\/\/www.maxwellplc.com\/products\/3500-50-bently-nevada-tachometer-module-3500-machinery-protection-system","provider":"Maxwell PLC Ltd","version":"1.0","type":"link"}