{"product_id":"bently-nevada-3500-50-133388-02-tachometer-monitoring-module-3500-series","title":"Bently Nevada 3500\/50 133388-02 Tachometer Monitoring Module 3500 Series","description":"\u003cp\u003eConfigured for high-speed rotational frequency measurement in the 3500 Machinery Protection System, the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eBently Nevada 133388-02\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e(\u003cstrong\u003e3500\/50\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eTachometer Module) provides direct physical signal processing for primary machine speed tracking and trip logic execution.\u003c\/p\u003e\n\u003ch3\u003eModel Matrix\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003ePart Number: 133388-02\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eFunctional Series: 3500\/50\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eBase Logic: Tachometer Monitoring\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHardware 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\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 133388-02\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\u003e0.82 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\u003e2.5 cm x 25.5 cm x 24 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\u003eNot specified (backplane dependent)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eResolution\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0.001 RPM\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eOutput Signal\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e4-20 mA\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eMechanical Monitoring and Signal Integration\u003c\/h3\u003e\n\u003cp\u003eThe 3500\/50 module requires accurate eddy-current probe scaling to define the input signal threshold for speed measurement. Each channel must undergo gap voltage validation, targeting the standard -10 VDC operational point to ensure the signal remains within the linear range of the probe. Proper configuration of the rotor dynamics threshold is necessary to prevent false speed readings during transient start-up or shut-down states. The internal circuit design incorporates cross-talk suppression to maintain input signal integrity across adjacent high-density monitoring channels within the backplane assembly.\u003c\/p\u003e\n\u003ch3\u003eOrdering Information\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e3500\/50 Tachometer Module (133388-02)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eI\/O module matching the required terminal interface (Internal\/External termination)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eStandard system documentation package\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eField Installation Procedures\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eBackplane Seating: Ensure the module is fully seated into the 3500 rack slot to ensure proper contact with the P1\/P2 backplane connectors.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eTerminal Termination: Verify whether the I\/O block is configured for internal or external termination based on existing field wiring requirements.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSignal Shielding: Use dedicated twisted-pair shielded cables for probe inputs; terminate shields at the rack safety ground point to mitigate common-mode noise.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHot-Swap Protocol: The module supports live insertion and extraction; verify that the Rack Interface Module (RIM) acknowledges the new module status upon power-up.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eDoes the module perform its own logic processing?\u003c\/p\u003e\n\u003cp\u003eYes, the module processes raw transducer inputs locally and compares them against programmed alarm setpoints defined in the rack configuration.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat is the maximum input frequency capacity?\u003c\/p\u003e\n\u003cp\u003eFrequency capacity is dependent on the specific transducer type and configuration settings within the 3500 software; consult the system manual for range limits.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCan this module be used in a redundant configuration?\u003c\/p\u003e\n\u003cp\u003eYes, the 3500 system architecture supports dual-redundant configurations for 2oo2 voting logic to minimize single-point failure risks.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHow is the 4-20 mA output scaled?\u003c\/p\u003e\n\u003cp\u003eThe output is mapped to a defined RPM range within the 3500 software, allowing for linear scaling from the measured speed to the current loop.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDoes it require external loop power for the 4-20 mA output?\u003c\/p\u003e\n\u003cp\u003eThe module can be configured to source loop power or act as a passive transmitter depending on the I\/O module selection.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat happens if the transducer gap voltage drifts?\u003c\/p\u003e\n\u003cp\u003eThe module will report a transducer fault if the input signal exceeds the calibrated voltage range, triggering a \"Not OK\" status bit.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eIs the 133388-02 compatible with all 3500 rack generations?\u003c\/p\u003e\n\u003cp\u003eIt is compatible with standard 3500\/01 and 3500\/02 rack series; verify backplane firmware compatibility during installation.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHow is firmware updated?\u003c\/p\u003e\n\u003cp\u003eFirmware updates are conducted via the Rack Interface Module (RIM) using the 3500 configuration software connection to the workstation.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":45378090664109,"sku":"133388-02","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/1613\/9181\/files\/bently-nevada-3500-50-133388-02-tachometer-module-fzrkzbolckl.jpg?v=1764225507","url":"https:\/\/www.maxwellplc.com\/products\/bently-nevada-3500-50-133388-02-tachometer-monitoring-module-3500-series","provider":"Maxwell PLC Ltd","version":"1.0","type":"link"}