{"product_id":"bently-nevada-3500-25-149369-01-125800-01-keyphasor-module","title":"Bently Nevada 3500\/25 149369-01 125800-01 Keyphasor Module","description":"\u003ch2\u003eBently Nevada 3500\/25 149369-01 + 125800-01 Keyphasor Module\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eBently Nevada 149369-01 + 125800-01\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e3500\/25\u003c\/strong\u003e Keyphasor Module, operates as a dedicated hardware component for phase reference conditioning and timing pulse distribution within Bently Nevada 3500 Machinery Protection System platforms. This half-height, two-channel assembly accepts raw voltage inputs from non-contacting proximity probes or magnetic pickups across rear internal termination blocks on the 125800-01 I\/O card. Main module 149369-01 processes these transducer signals into TTL-compatible digital pulses, routing timing references across the rack backplane to drive synchronous vibration filtering, 1X\/2X phase angle tracking, and vector calculation modules.\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\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3500\/25 (149369-01 + 125800-01)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBently Nevada\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOrigin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.9 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e228 mm x 50 mm x 289 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Temp\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-30 to +65 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Consumption\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eStandard backplane power load\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChannel Count\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2-channel (dual independent inputs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTermination Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eInternal terminations (125800-01 I\/O)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Acceptance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eProximity transducers or magnetic pickups\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFrequency Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.016 Hz to 20 kHz (up to 100 kHz peak)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSignal Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRaw signal to TTL-compatible digital pulse conversion\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompliance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAPI 670 machinery protection standards compliant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCertifications\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCE, CSA, ATEX\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eRotor Dynamics and Gap Voltage Validation Parameters\u003c\/h3\u003e\n\u003cp\u003eThe 3500\/25 149369-01 + 125800-01 module provides precise timing references needed to process rotor dynamics parameters and validate sensor health. As shaft keyways or notches pass proximity probes, eddy-current probe scaling (such as 200 mV\/mil or 7.87 V\/mm) determines peak voltage thresholds while technicians verify proper probe installation using gap voltage validation (-10 VDC targets). The conditioning electronics integrate cross-talk suppression logic to preserve pulse edge timing across high-frequency ranges up to 100 kHz. By supplying synchronized trigger pulses directly to adjacent vibration monitors, the card enables accurate measurement of shaft unbalance, 1X phase vectors, and orbit orientation across variable-speed machinery trains.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: How does the 3500\/25 module distribute Keyphasor signals to adjacent machinery protection racks?\u003c\/p\u003e\n\u003cp\u003eA: The 125800-01 I\/O module includes buffered Keyphasor output terminals that allow technicians to daisy-chain the primary TTL timing pulse to secondary 3500 racks without degrading signal amplitude.\u003c\/p\u003e\n\u003cp\u003eQ: Can magnetic pickups and eddy-current proximity probes connect simultaneously to the dual channels?\u003c\/p\u003e\n\u003cp\u003eA: Yes, each input channel processes raw signals independently, allowing configuration of either a non-contacting eddy-current proximity transducer or an passive magnetic pickup on a per-channel basis via rack software.\u003c\/p\u003e\n\u003cp\u003eQ: What advantage does the internal termination option 125800-01 provide during cabinet installation?\u003c\/p\u003e\n\u003cp\u003eA: The 125800-01 I\/O card integrates screw terminal blocks directly onto the rear board assembly, allowing direct landing of field wiring without requiring external interface modules or intermediate DIN-rail terminal blocks.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eWhen installing and wiring the Bently Nevada 3500\/25 149369-01 + 125800-01 Keyphasor assembly, observe the following physical installation steps:\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eInsert the 149369-01 main module into the designated upper or lower half-height slot position in the 3500 rack chassis and tighten both captive retaining screws.\u003c\/li\u003e\n\u003cli\u003eAlign the 125800-01 internal termination I\/O module with the matching rear slot location, seating the backplane edge connectors firmly before securing the rear mounting hardware.\u003c\/li\u003e\n\u003cli\u003eStrip field wiring leads and land signal conductors directly onto the 125800-01 terminal block screws, applying a tightening torque of 0.5 to 0.6 N m.\u003c\/li\u003e\n\u003cli\u003eRoute twisted-pair shielded probe cabling through dedicated wire raceways, keeping transducer leads separated from high-voltage AC cables and VFD drive output wiring.\u003c\/li\u003e\n\u003cli\u003eTerminate overall cable shields at the dedicated rack chassis ground point to ensure signal integrity and prevent electromagnetic noise coupling into sensitive trigger circuits.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":43092258586714,"sku":"3500\/25-01-05-05","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/5957\/0778\/files\/289.1_9c06eca1-4227-435c-8768-cacdd3636522.jpg?v=1774249520","url":"https:\/\/www.spareoil.com\/products\/bently-nevada-3500-25-149369-01-125800-01-keyphasor-module","provider":"SpareOil Automation","version":"1.0","type":"link"}