{"product_id":"bently-nevada-176449-01-125680-01-3500-40m-proximitor-monitor-and-i-o-module","title":"Bently Nevada 176449-01+125680-01 3500\/40M Proximitor Monitor and I\/O Module","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eExecuting continuous machinery protection functions within the 3500 rack system, the \u003cstrong\u003eBently Nevada 176449-01+125680-01\u003c\/strong\u003e pairs a four-channel 3500\/40M Proximitor Monitor with a 125680-01 internal termination I\/O module. This combination processes high-frequency inputs from proximity transducers to provide precise measurements of radial vibration, thrust position, eccentricity, and differential expansion. By embedding terminal connections directly onto the 125680-01 I\/O card, the assembly eliminates the need for external terminal blocks, reducing cabinet footprint and simplifying complex field wiring in demanding environments.\u003c\/p\u003e\n\n\u003ch3 style=\"color: #1a365d; margin-top: 1.5rem; margin-bottom: 0.5rem;\"\u003eFeatures\u003c\/h3\u003e\n\u003cul style=\"list-style-type: square; color: #2d3748; margin-bottom: 1.5rem; padding-left: 1.5rem;\"\u003e\n  \u003cli style=\"margin-bottom: 0.5rem;\"\u003e\n\u003cstrong\u003eFour-Channel Architecture:\u003c\/strong\u003e Independent channel configuration supports simultaneous tracking of radial vibration, axial thrust, and shaft position.\u003c\/li\u003e\n  \u003cli style=\"margin-bottom: 0.5rem;\"\u003e\n\u003cstrong\u003eInternal Terminations:\u003c\/strong\u003e The 125680-01 backplane card incorporates dedicated termination blocks directly on the module, streamlining loop wiring.\u003c\/li\u003e\n  \u003cli style=\"margin-bottom: 0.5rem;\"\u003e\n\u003cstrong\u003eOn-Board Signal Conditioning:\u003c\/strong\u003e Integrates high-accuracy analog-to-digital conversion and dynamic signal processing to calculate peak-to-peak and average values.\u003c\/li\u003e\n  \u003cli style=\"margin-bottom: 0.5rem;\"\u003e\n\u003cstrong\u003eFlexible Alarm Profiles:\u003c\/strong\u003e Independent configuration of Alert and Danger thresholds for each channel with selectable time delays.\u003c\/li\u003e\n  \u003cli style=\"margin-bottom: 0.5rem;\"\u003e\n\u003cstrong\u003eComprehensive System Diagnostics:\u003c\/strong\u003e Continuous monitoring of transducer circuits, power supplies, and internal operations to trigger instant OK relay status transitions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 style=\"color: #1a365d; margin-top: 1.5rem; margin-bottom: 0.5rem;\"\u003eApplications\u003c\/h3\u003e\n\u003cul style=\"list-style-type: square; color: #2d3748; margin-bottom: 1.5rem; padding-left: 1.5rem;\"\u003e\n  \u003cli style=\"margin-bottom: 0.5rem;\"\u003eSteam and gas turbine bearing housing vibration and rotor position monitoring.\u003c\/li\u003e\n  \u003cli style=\"margin-bottom: 0.5rem;\"\u003eHigh-pressure centrifugal compressor rotor dynamic analysis.\u003c\/li\u003e\n  \u003cli style=\"margin-bottom: 0.5rem;\"\u003eIndustrial gearbox, blower, and heavy-duty fan vibration tracking.\u003c\/li\u003e\n  \u003cli style=\"margin-bottom: 0.5rem;\"\u003eCritical rotating machinery protection in oil and gas, power generation, and petrochemical processing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 style=\"color: #1a365d; margin-top: 1.5rem; margin-bottom: 0.5rem;\"\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 #1a365d;\"\u003e\n        \u003cth style=\"text-align: left; padding: 8px; font-weight: bold;\"\u003eParameter\u003c\/th\u003e\n        \u003cth style=\"text-align: left; padding: 8px; font-weight: bold;\"\u003eSpecification Value\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;\"\u003eMonitor Module Part Number\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e176449-01 (3500\/40M)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eI\/O Module Part Number\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e125680-01 (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;\"\u003eSystem Compatibility\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eBently Nevada 3500 Monitoring 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;\"\u003eNumber of Channels\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e4 independent 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 Transducer Support\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eProximitor Transducers (including 3300 XL series)\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 Range\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e-24 VDC nominal loop supply; standard proximity probe outputs\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eTermination Type\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eInternal Terminal Strips (Screw-clamp)\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\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e-30 to +65 degC\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 of America (USA)\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\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e10.0 kg (including packaging and modules)\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3 style=\"color: #1a365d; margin-top: 1.5rem; margin-bottom: 0.5rem;\"\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 #1a365d;\"\u003e\n        \u003cth style=\"text-align: left; padding: 8px; font-weight: bold;\"\u003eTerminal Block Label\u003c\/th\u003e\n        \u003cth style=\"text-align: left; padding: 8px; font-weight: bold;\"\u003eSignal Assignment \/ Function\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;\"\u003eCh 1 PROX \/ COM \/ SIG\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eChannel 1 Transducer Power, Ground, and Signal 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;\"\u003eCh 2 PROX \/ COM \/ SIG\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eChannel 2 Transducer Power, Ground, and Signal 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;\"\u003eCh 3 PROX \/ COM \/ SIG\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eChannel 3 Transducer Power, Ground, and Signal 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;\"\u003eCh 4 PROX \/ COM \/ SIG\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eChannel 4 Transducer Power, Ground, and Signal 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;\"\u003eSHLD Terminals\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eCommon instrumentation shield ground points (isolated from chassis)\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3 style=\"color: #1a365d; margin-top: 1.5rem; margin-bottom: 0.5rem;\"\u003eAlternative Models \u0026amp; Compatibility\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eThe 125680-01 I\/O module utilizes screw-type internal terminals, making it mechanically incompatible with racks configured for external termination blocks (which utilize different cable assemblies and the 125680-02 external termination I\/O). When hot-swapping or replacing older 3500\/40 units, ensure the firmware revision of the 176449-01 matches the version programmed in your 3500 Rack Configuration software to prevent slot mismatch errors and module inhibit states.\u003c\/p\u003e\n\n\u003ch3 style=\"color: #1a365d; margin-top: 1.5rem; margin-bottom: 0.5rem;\"\u003eApplication Pitfalls \u0026amp; Engineering Notes\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eBecause internal termination cables attach directly to the 125680-01 card at the rear of the rack, direct mechanical stress is placed on the card's backplane connector. Implement robust wire-tie and cable tray strain reliefs within the panel to decouple external weight. Ensure the total load on the -24 VDC transducer power loop does not exceed the system specifications when using non-standard extension cables or custom-length proximity sensor runs.\u003c\/p\u003e\n\n\u003ch3 style=\"color: #1a365d; margin-top: 1.5rem; margin-bottom: 0.5rem;\"\u003eCommissioning \u0026amp; Wiring Tips\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eAlways ground the sensor cable shields at the dedicated SHLD terminals on the 125680-01 module. Never ground the shield at both ends, as this introduces ground loops that corrupt low-voltage proximity measurements with 50\/60 Hz industrial noise. Prior to active commissioning, verify that the configured transducer scale factor (e.g., 7.87 V\/mm \/ 200 mV\/mil) aligns precisely with the calibrated scale factor of the installed Proximitor sensor.\u003c\/p\u003e\n\n\u003ch3 style=\"color: #1a365d; margin-top: 1.5rem; margin-bottom: 0.5rem;\"\u003eInstallation Guidelines\u003c\/h3\u003e\n\u003cdiv style=\"background-color: #fff5f5; border-left: 4px solid #c53030; padding: 1rem; margin-bottom: 1.5rem;\"\u003e\n  \u003cstrong style=\"color: #9b2c2c; display: block; margin-bottom: 0.5rem;\"\u003eCRITICAL WARNING: SAFETY FIRST\u003c\/strong\u003e\n  \u003cspan style=\"color: #9b2c2c;\"\u003eDe-energize the entire 3500 rack system prior to inserting or removing the 125680-01 I\/O card. Hot-swapping backplane components under load risks transient electrical faults that can trigger false machinery trip commands. Ground yourself via an ESD wrist strap during the installation procedure.\u003c\/span\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"margin-bottom: 1.5rem;\"\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; margin-bottom: 1rem;\"\u003e\n    \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; min-width: 24px; height: 24px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold; margin-right: 0.75rem;\"\u003e1\u003c\/div\u003e\n    \u003cdiv style=\"color: #2d3748;\"\u003eInsert the 176449-01 monitor module into the chosen slot on the front of the 3500 rack. Ensure the ejector tabs lock firmly into position.\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; margin-bottom: 1rem;\"\u003e\n    \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; min-width: 24px; height: 24px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold; margin-right: 0.75rem;\"\u003e2\u003c\/div\u003e\n    \u003cdiv style=\"color: #2d3748;\"\u003eAlign the 125680-01 internal termination I\/O module with the matching rear slot guide rails and push firmly until the board seats fully into the backplane connector. Tighten the rear thumbscrews.\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; margin-bottom: 1rem;\"\u003e\n    \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; min-width: 24px; height: 24px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold; margin-right: 0.75rem;\"\u003e3\u003c\/div\u003e\n    \u003cdiv style=\"color: #2d3748;\"\u003eConnect the field wires to the internal screw terminals, securing the shield drain wire to the designated SHLD terminal for each respective channel.\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start;\"\u003e\n    \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; min-width: 24px; height: 24px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold; margin-right: 0.75rem;\"\u003e4\u003c\/div\u003e\n    \u003cdiv style=\"color: #2d3748;\"\u003eApply system power, establish connection with the 3500 Rack Configuration Software, upload the correct slot profile, and perform a loop check across all active transducer channels.\u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":52668314681707,"sku":"176449-01+125680-01","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/176449-01125680-01-i41d31qoc4g_a0c10ff9-b365-4890-8b40-c40c213b16c7.jpg?v=1765520974","url":"https:\/\/www.plcprotech.com\/fa\/products\/bently-nevada-176449-01-125680-01-3500-40m-proximitor-monitor-and-i-o-module","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}