{"product_id":"126648-01-bently-nevada-3500-25-keyphasor-i-o-module-w-external-terminations","title":"126648-01 Bently Nevada 3500\/25 Keyphasor I\/O Module w\/ External Terminations","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003e\u003cspan class=\"citation-86 citation-end-86\"\u003eThe 126648-01 is a high-integrity signal interface designed for the Bently Nevada 3500\/25 Keyphasor system.\u003csup class=\"superscript\"\u003e\u003c\/sup\u003e\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003eThis specific I\/O module is engineered to handle \"once-per-turn\" or \"multiple-pulse-per-turn\" signals from rotating shafts, providing essential phase and speed data to the machinery protection rack. A primary function of this module is to provide robust electrical isolation, which is critical when a single Keyphasor transducer must send signals to multiple systems (such as a control system and a monitoring system) simultaneously.\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"citation-85 citation-end-85\"\u003eBy isolating these signal paths, the module prevents ground loops and cross-system interference, ensuring that timing data remains precise for vibration analysis and emergency trip logic.\u003csup class=\"superscript\"\u003e\u003c\/sup\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eHardware Configuration \u0026amp; Physical Metrics\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003ctd\u003e\u003cstrong\u003eComponent Detail\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\u003e\u003cstrong\u003eModel Number\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e3500\/25\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eOrder Code\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e126648-01\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eTermination Type\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eExternal Terminations\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003ePrimary Sensor Support\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eMagnetic Pickups\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eSecondary Support\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eProximitor Sensors (Requires External Power)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eModule Weight\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0.42 kg (0.93 lbs)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eUnit Dimensions\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e24.2 cm x 11.2 cm x 2.5 cm\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eManufacturing Origin\u003c\/strong\u003e\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\u003e\u003cstrong\u003eSignal Processing\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eIsolated Pulse Transmission\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eIndustrial Protection Strategies\u003c\/h3\u003e\n\u003cp\u003eThe 126648-01 is indispensable in complex industrial architectures where signal sharing is common. Its operational value is most apparent in the following scenarios:\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eIntegrated Control \u0026amp; Safety:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eSupplying speed data to both a PLC\/DCS for process control and the 3500 rack for safety shutdowns without signal degradation.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eLarge-Scale Steam Turbines:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eProviding the phase reference pulse needed for Bode and Polar diagnostic plots used in turbine startup and coast-down analysis.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHigh-Interference Zones:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eProtecting the 3500\/25 monitor from electrical noise generated by adjacent high-voltage equipment through galvanic isolation.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRetrofit Projects:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eInterfacing legacy magnetic pickups with modern 3500 series monitoring racks in older power generation or oil and gas facilities.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why would I choose the 126648-01 with external terminations over internal ones?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: External terminations are ideal for high-density cabinets where wiring is managed at a separate terminal block. This simplifies the replacement of the I\/O module itself, as you do not need to disconnect individual field wires from the module.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can this module power my Bently Nevada Proximitor sensor?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: No, the 126648-01 does not provide internal power for Proximitor sensors. If you are using proximity probes for Keyphasor sensing, you must provide an independent external power supply for those transducers.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is the 126648-01 compatible with all 3500\/25 monitor modules?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Yes, it is designed to work as the backend interface for the 3500\/25 Keyphasor monitor card, provided the rack configuration is set for external termination wiring.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the benefit of the isolation feature in this specific module?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: It prevents a failure in an external system (like a short circuit in a control system) from affecting the Machinery Protection System, ensuring your turbine remains protected even if other monitoring assets fail.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the lead time for this specific part number?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: We currently maintain this item in brand-new condition and in stock. Typical shipping occurs within 24-48 hours via premium carriers like FedEx or UPS.\u003c\/p\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":45840783737005,"sku":"126648-01","price":899.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/1613\/9181\/files\/BENTLY126648-01_1_fde6abf6-90a7-490b-ab93-764fbbaf9547.jpg?v=1774236820","url":"https:\/\/www.maxwellplc.com\/products\/126648-01-bently-nevada-3500-25-keyphasor-i-o-module-w-external-terminations","provider":"Maxwell PLC Ltd","version":"1.0","type":"link"}