{"product_id":"bently-nevada-133388-01-3500-53-overspeed-detection-module","title":"Bently Nevada 133388-01 3500\/53 Overspeed Detection Module","description":"\u003ch2\u003eBently Nevada 133388-01 3500\/53 Overspeed Detection Module\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eBently Nevada 133388-01\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e3500\/53\u003c\/strong\u003e Overspeed Detection Module, operates as a dedicated hardware component for high-speed overspeed monitoring and emergency shutdown execution within Bently Nevada 3500 Series Machinery Protection System platforms. The module monitors tachometer inputs from proximity probes or magnetic pickups, converting raw frequency signals into discrete relay operations and analog metrics. This direct hardware interlock provides automatic machinery protection independent of software-driven distributed networks.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e133388-01\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eBently Nevada\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.45 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eStandard 3500 Series Rack Slot\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-30 to +65 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e8 Watts (Typical)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Signal Range\u003c\/td\u003e\n\u003ctd\u003e+10 V to -24 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Impedance\u003c\/td\u003e\n\u003ctd\u003e20 kOhm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransducer Power Supply\u003c\/td\u003e\n\u003ctd\u003e-24 V DC, 40 mA maximum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAnalog Output\u003c\/td\u003e\n\u003ctd\u003e4-20 mA (Proportional to full-scale RPM)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAnalog Resolution\u003c\/td\u003e\n\u003ctd\u003e0.3662 uA per bit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAnalog Accuracy\u003c\/td\u003e\n\u003ctd\u003e+\/-0.25% (Room temp); +\/-0.7% (Full operating range)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRelay Type\u003c\/td\u003e\n\u003ctd\u003eSingle-Pole Double-Throw (SPDT)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRelay Contact Ratings\u003c\/td\u003e\n\u003ctd\u003e5 A @ 24 V DC \/ 120 V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Relay Voltage\u003c\/td\u003e\n\u003ctd\u003e30 V DC \/ 250 V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eMachinery Monitoring and TSI Features\u003c\/h3\u003e\n\u003cp\u003eThe module integrates internal diagnostic layers dedicated to gap voltage validation, verifying that the connected proximity sensors maintain structural stability within standard -10 VDC targets. This constant validation preserves signal correctness across the entire tracking range before raw pulses are translated via established eddy-current probe scaling factors into digital RPM readouts. To handle complex rotor dynamics calculations cleanly, internal isolation circuitry exercises cross-talk suppression across the backplane bus, preventing auxiliary phase noise or noise from high-density adjacent channels from corrupting the emergency overspeed detection loop.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: How does the module handle redundancy in voting configurations?\u003c\/p\u003e\n\u003cp\u003eA: The module is designed to operate within a two-out-of-three (2oo3) hardware voting architecture when integrated across three redundant slots in the 3500 rack, executing shutdown commands while preventing nuisance trips.\u003c\/p\u003e\n\u003cp\u003eQ: Can the 4-20 mA analog output drive external loops directly?\u003c\/p\u003e\n\u003cp\u003eA: Yes, the integrated 4-20 mA analog output is proportional to the full-scale RPM values and interfaces directly with external distributed control systems or recorder loops for independent logging.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminal Wiring Restrictions:\u003c\/strong\u003e Ensure all tachometer probe signal leads are connected securely to the rear terminal strip with clear polarization mapping.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShield Ground Tracking:\u003c\/strong\u003e Connect the outer braided shield layer of the transducer extension cables strictly at the designated instrumentation ground point on the rear 3500 rack structure. Do not ground the shield at the field machine housing to avoid ground loop current interference.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProximity Probe Clearances:\u003c\/strong\u003e When installing proximity probes for speed sensing, perform precise alignment and measure static gap voltage to match the -10 VDC linear range parameters specified in the engineering loop diagram.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":42870838853722,"sku":"3500\/53 133388-01","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/5957\/0778\/files\/420.1.jpg?v=1773021077","url":"https:\/\/www.spareoil.com\/products\/bently-nevada-133388-01-3500-53-overspeed-detection-module","provider":"SpareOil Automation","version":"1.0","type":"link"}