{"product_id":"bently-nevada-3500-25-01-01-cn-3500-series-enhanced-keyphasor-module","title":"Bently Nevada 3500\/25-01-01-CN 3500 Series Enhanced Keyphasor Module","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eProviding high-accuracy phase reference and rotational speed measurements for machinery protection, the \u003cstrong\u003eBently Nevada 3500\/25-01-01-CN\u003c\/strong\u003e is a half-height, dual-channel module designed for the 3500 Machinery Protection System. This specific model features a \u003cstrong\u003esingle half-height 2-channel Keyphasor card\u003c\/strong\u003e paired with an I\/O module configured for \u003cstrong\u003einternal terminations\u003c\/strong\u003e. The hardware processes input signals from proximity probes or magnetic pickups, converting them into digital phase reference pulses used by other monitoring modules in the rack. Approved under country-specific standards (CN designation), this industrial-grade module ensures reliable operation within critical diagnostic architectures.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul style=\"list-style-type: square; color: #2d3748; padding-left: 20px; margin-bottom: 1.5rem;\"\u003e\n  \u003cli style=\"margin-bottom: 0.5rem;\"\u003e\n\u003cstrong\u003eTwo-Channel Processing:\u003c\/strong\u003e Dual independent channels process phase reference signals simultaneously.\u003c\/li\u003e\n  \u003cli style=\"margin-bottom: 0.5rem;\"\u003e\n\u003cstrong\u003eInternal Terminations:\u003c\/strong\u003e Integrated wiring terminals streamline panel installation, eliminating the requirement for external termination blocks.\u003c\/li\u003e\n  \u003cli style=\"margin-bottom: 0.5rem;\"\u003e\n\u003cstrong\u003eFlexible Sensor Compatibility:\u003c\/strong\u003e Accepts inputs directly from passive magnetic pickups, multi-event wheels, and proximity transducer systems.\u003c\/li\u003e\n  \u003cli style=\"margin-bottom: 0.5rem;\"\u003e\n\u003cstrong\u003eRack Integration:\u003c\/strong\u003e Fits into half-height slots of standard 3500 series chassis, maximizing slot density.\u003c\/li\u003e\n  \u003cli style=\"margin-bottom: 0.5rem;\"\u003e\n\u003cstrong\u003eCN Approvals:\u003c\/strong\u003e Certified under regional country-specific electrical and safety standards.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul style=\"list-style-type: square; color: #2d3748; padding-left: 20px; margin-bottom: 1.5rem;\"\u003e\n  \u003cli style=\"margin-bottom: 0.5rem;\"\u003eRotational speed tracking on heavy utility steam and gas turbines.\u003c\/li\u003e\n  \u003cli style=\"margin-bottom: 0.5rem;\"\u003ePhase-angle determination for multi-stage centrifugal compressors.\u003c\/li\u003e\n  \u003cli style=\"margin-bottom: 0.5rem;\"\u003eVibration analysis and balancing of high-speed industrial fans and blowers.\u003c\/li\u003e\n  \u003cli style=\"margin-bottom: 0.5rem;\"\u003eHydroelectric generator shaft alignment and orbit plotting.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eOrdering Information\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; width: 100%; margin-bottom: 1.5rem;\"\u003e\n  \u003ctable style=\"border-collapse: collapse; width: 100%; color: #2d3748;\"\u003e\n    \u003cthead\u003e\n      \u003ctr style=\"border-bottom: 2px solid #2b6cb0; text-align: left;\"\u003e\n        \u003cth style=\"padding: 8px; font-weight: bold;\"\u003eOption Code\u003c\/th\u003e\n        \u003cth style=\"padding: 8px; font-weight: bold;\"\u003eConfiguration Detail\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003e3500\/25\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eEnhanced Keyphasor Module\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003e-01\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eSingle half-height 2-channel Keyphasor card (order for 2 channels)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003e-01\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eI\/O Module with Internal Terminations\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003e-CN\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eCountry Specific Approvals (China \/ Regional Standards)\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; width: 100%; margin-bottom: 1.5rem;\"\u003e\n  \u003ctable style=\"border-collapse: collapse; width: 100%; color: #2d3748;\"\u003e\n    \u003cthead\u003e\n      \u003ctr style=\"border-bottom: 2px solid #2b6cb0; text-align: left;\"\u003e\n        \u003cth style=\"padding: 8px; font-weight: bold;\"\u003eParameter\u003c\/th\u003e\n        \u003cth style=\"padding: 8px; font-weight: bold;\"\u003eValue \/ Requirement\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eManufacturer\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eBently Nevada\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eSeries\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e3500 Machinery Protection System\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eInput Channels\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e2 differential or single-ended channels\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eInput Signal Range\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e+0.8 V to -26.0 V (Non-contact sensors) or 8 V peak-to-peak (Magnetic pickups)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eInput Impedance\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e10 kohm minimum\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003ePower Consumption\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e3.2 Watts typical\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eSignal-to-Noise Ratio\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eMinimum 20 dB dynamic range\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eOperating Temperature Range\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e-30 degC to +65 degC (-22 degF to +149 degF)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eCountry of Origin\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eUnited States (Made in U.S.A.)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eShipping Weight (Calculated)\u003c\/td\u003e\n        \u003ctd style=\"padding: 2.0 kg;\"\u003e2.0 kg (including module, internal terminations I\/O card, and protective packaging)\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eConnections and Interfaces\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; width: 100%; margin-bottom: 1.5rem;\"\u003e\n  \u003ctable style=\"border-collapse: collapse; width: 100%; color: #2d3748;\"\u003e\n    \u003cthead\u003e\n      \u003ctr style=\"border-bottom: 2px solid #2b6cb0; text-align: left;\"\u003e\n        \u003cth style=\"padding: 8px; font-weight: bold;\"\u003eTerminal \/ Pin No.\u003c\/th\u003e\n        \u003cth style=\"padding: 8px; font-weight: bold;\"\u003eSignal Assignment\u003c\/th\u003e\n        \u003cth style=\"padding: 8px; font-weight: bold;\"\u003eDescription\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003e1\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eKPH 1 +\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eKeyphasor Channel 1 Non-Inverting Signal Input\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003e2\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eKPH 1 -\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eKeyphasor Channel 1 Inverting \/ Common Return\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003e3\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eKPH 1 OUT\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eTransducer Power (-24 VDC Supply for Proximitor)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003e4\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eKPH 2 +\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eKeyphasor Channel 2 Non-Inverting Signal Input\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003e5\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eKPH 2 -\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eKeyphasor Channel 2 Inverting \/ Common Return\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003e6\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eKPH 2 OUT\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eTransducer Power (-24 VDC Supply for Proximitor)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003e7\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eSHIELD\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eDedicated cable shield ground point (tied to chassis ground)\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eEmpirical Engineering Insights\u003c\/h3\u003e\n\n\u003ch3\u003eAlternative Models \u0026amp; Compatibility\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eThe \"Enhanced\" 3500\/25 module directly replaces legacy non-enhanced 3500\/25 modules. However, firmware compatibility must be verified prior to hot-swapping: your 3500 Rack Configuration Software must be upgraded to version 3.3 or higher to configure the advanced dynamic hysteresis options. Do not attempt to run a non-enhanced card and an enhanced card as a redundant pair in the same slot space; both cards must share the same hardware revision level to guarantee system synchronization.\u003c\/p\u003e\n\n\u003ch3\u003eApplication Pitfalls \u0026amp; Engineering Notes\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eWhen configuring magnetic pickups, field engineers should note that the output signal drops significantly at low RPM. If the machine operates below 100 RPM, standard passive magnetic pickups may not generate sufficient amplitude to cross the threshold, leading to \"Keyphasor Fault\" indications. In these scenarios, use active proximity sensors which maintain constant voltage outputs down to zero speed.\u003c\/p\u003e\n\n\u003ch3\u003eCommissioning \u0026amp; Wiring Tips\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eTo prevent electromagnetic interference (EMI) from neighboring power cables and variable frequency drives (VFDs), ensure Keyphasor wiring is routed via dedicated, shielded twisted-pair (STP) lines. The shield should only be grounded at the 3500 chassis ground terminal on the I\/O card; the sensor-end shield must be left floating and insulated to eliminate parasitic ground loops.\u003c\/p\u003e\n\n\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\n\n\u003cdiv style=\"background-color: #fff5f5; border-left: 4px solid #c53030; padding: 15px; margin-bottom: 1.5rem;\"\u003e\n  \u003cstrong style=\"color: #9b2c2c; display: block; margin-bottom: 5px;\"\u003eCRITICAL WARNING\u003c\/strong\u003e\n  \u003cp style=\"color: #9b2c2c; margin: 0;\"\u003ePrior to removing or installing any 3500\/25 module, ensure the rack is placed in a bypassed or safe state. Improper hot-swapping in active protection racks can trigger false machinery trip signals. Verify field wiring insulation to prevent accidental shorting of the -24 VDC transducer power lines to the chassis ground.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display: flex; align-items: flex-start; margin-bottom: 1rem;\"\u003e\n  \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; min-width: 30px; height: 30px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold; margin-right: 15px;\"\u003e1\u003c\/div\u003e\n  \u003cp style=\"color: #2d3748; margin: 0; padding-top: 3px;\"\u003eInspect the module backplane and gold connector pins for debris or misalignment before insertion.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display: flex; align-items: flex-start; margin-bottom: 1rem;\"\u003e\n  \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; min-width: 30px; height: 30px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold; margin-right: 15px;\"\u003e2\u003c\/div\u003e\n  \u003cp style=\"color: #2d3748; margin: 0; padding-top: 3px;\"\u003eAlign the half-height module card with the upper or lower guide rails in the selected slot location.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display: flex; align-items: flex-start; margin-bottom: 1rem;\"\u003e\n  \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; min-width: 30px; height: 30px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold; margin-right: 15px;\"\u003e3\u003c\/div\u003e\n  \u003cp style=\"color: #2d3748; margin: 0; padding-top: 3px;\"\u003eSlide the module gently but firmly straight back into the rack until the ejector tabs lock cleanly.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display: flex; align-items: flex-start; margin-bottom: 1rem;\"\u003e\n  \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; min-width: 30px; height: 30px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold; margin-right: 15px;\"\u003e4\u003c\/div\u003e\n  \u003cp style=\"color: #2d3748; margin: 0; padding-top: 3px;\"\u003eSecure the front-panel mounting screws to ensure proper chassis grounding and thermal contact.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display: flex; align-items: flex-start; margin-bottom: 1rem;\"\u003e\n  \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; min-width: 30px; height: 30px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold; margin-right: 15px;\"\u003e5\u003c\/div\u003e\n  \u003cp style=\"color: #2d3748; margin: 0; padding-top: 3px;\"\u003eUpload and verify configuration parameters via the Bently Nevada 3500 Rack Configuration software.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":52668292628843,"sku":"3500\/25-01-01-CN","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/3500-25-01-01-CN-epfnzhxnqrx_cb6271f0-94d0-4de0-bf53-0614300f01d0.jpg?v=1765520364","url":"https:\/\/www.plcprotech.com\/products\/bently-nevada-3500-25-01-01-cn-3500-series-enhanced-keyphasor-module","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}