{"product_id":"125800-01-bently-nevada-3500-25-keyphasor-i-o-module","title":"125800-01 Bently Nevada 3500\/25 Keyphasor I\/O Module","description":"\u003cp\u003eConfigured for phase-accurate timing and speed reference conditioning in Bently Nevada 3500 Machinery Protection Systems, the \u003cstrong\u003eBently Nevada 125800-01\u003c\/strong\u003e (\u003cstrong\u003e3500\/25\u003c\/strong\u003e Keyphasor I\/O Module) provides direct physical\/electrical execution. The half-height hardware processes incoming signals from proximity probes or magnetic pickups, translating mechanical rotations into digital timing pulses. These synchronous references are routed across the system backplane to adjacent monitors to facilitate vector-based machinery diagnostics without data latency.\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\u003e125800-01\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\u003e0.38 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e24.2 cm x 11.2 cm x 2.5 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 to +65 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e12 to 32 VDC, 10 mA maximum (Input)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Type\u003c\/td\u003e\n\u003ctd\u003eKeyphasor Input\/Output Module (Half-height)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChannel Capacity\u003c\/td\u003e\n\u003ctd\u003eDual-channel input\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Architecture\u003c\/td\u003e\n\u003ctd\u003eStandard and TMR (Triple Modular Redundant)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePhase Accuracy\u003c\/td\u003e\n\u003ctd\u003e+\/-0.5 deg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency Response\u003c\/td\u003e\n\u003ctd\u003e0 to 10 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBuffered Output\u003c\/td\u003e\n\u003ctd\u003e0 to 10 VDC (20 mA maximum current)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHumidity\u003c\/td\u003e\n\u003ctd\u003e95% non-condensing\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 provides processing pathways for rotor dynamics calculations and synchronous vector tracking during turbine start-up and steady-state phases. It facilitates eddy-current probe scaling by evaluating raw input signals from proximity sensors relative to a physical reference mark on the rotating shaft. To maintain signal validity, the instrumentation requires gap voltage validation, verifying that proximity probe static biases align with standard -10 VDC targets. This conditioning safeguards against signal distortion, utilizing integrated cross-talk suppression to preserve a phase accuracy within a +\/-0.5 deg envelope across both independent monitoring channels.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Can this module be deployed within active Triple Modular Redundant (TMR) rack configurations?\u003c\/p\u003e\n\u003cp\u003eA: Yes, the module circuitry supports both standard and TMR Bently Nevada 3500 backplane architectures, ensuring continuous timing signal routing to redundant tracking monitors.\u003c\/p\u003e\n\u003cp\u003eQ: What are the electrical constraints of the buffered output interface?\u003c\/p\u003e\n\u003cp\u003eA: The buffered output channels supply a 0 to 10 VDC signal with a maximum current capacity of 20 mA, designed to drive external diagnostic instruments or oscilloscope test leads without disrupting the primary monitor loops.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eChassis Alignment:\u003c\/strong\u003e Slide the half-height module into its designated slot in the 3500 rack. Ensure both top and bottom securing screws are tightened to standard torque limits to confirm structural bonding and backplane terminal mating.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTransducer Cable Shielding:\u003c\/strong\u003e Terminate the outer braided shields of the input sensor cables at the rack common ground terminal block only. Do not ground the shield at the field sensor housing to prevent the formation of measurement ground loops.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWiring Proximity:\u003c\/strong\u003e Maintain physical isolation between the low-voltage sensor input wiring and high-power electrical distribution lines. Use grounded steel conduit or segregated cable trays to protect against electromagnetic noise injection.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":42870861889626,"sku":"3500\/25 125800-01","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/5957\/0778\/files\/415.jpg?v=1773019601","url":"https:\/\/www.spareoil.com\/products\/125800-01-bently-nevada-3500-25-keyphasor-i-o-module","provider":"SpareOil Automation","version":"1.0","type":"link"}