{"product_id":"86739-01-3500-series-bently-nevada-dual-vibration-monitor-module","title":"86739-01 3500 Series Bently Nevada Dual Vibration Monitor Module","description":"\u003ch2\u003eBently Nevada 86739-01 Dual Vibration Monitor\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eBently Nevada 86739-01\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e86739-01\u003c\/strong\u003e Dual Vibration Monitor, operates as a dedicated hardware component for continuous machinery protection and relay logic execution within 3500 Series Rack systems.\u003c\/p\u003e\n\u003ch3\u003eSuffix Breakdown \u0026amp; Model Matrix\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eCode\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eDescription\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e86739\u003c\/td\u003e\n\u003ctd\u003e3500 Dual Vibration Monitor Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e01\u003c\/td\u003e\n\u003ctd\u003eStandard I\/O Module Configuration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\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\u003e86739-01\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\u003e2.8 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eStandard 3500 module form factor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-30 deg C to +65 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eRack backplane supplied\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRelay Rating\u003c\/td\u003e\n\u003ctd\u003e5 A at 30 VDC or 250 VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eMechanical Monitoring and TSI Characteristics\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003e86739-01\u003c\/strong\u003e provides signal conditioning and alarming for two independent vibration inputs. When configuring this module, technicians must verify eddy-current probe scaling to ensure the monitor accurately reflects rotor dynamics. The module performs real-time gap voltage validation, where signals outside the specified range trigger transducer-fault alarms. By utilizing the 3500 backplane, the unit maintains high-speed data exchange for cross-channel logic, enabling sophisticated trip voting strategies. Furthermore, proper configuration of signal filtering is required to suppress high-frequency noise and prevent nuisance trips while ensuring that genuine vibration peaks in the rotor dynamics frequency band are detected and logged.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Does the module support hot-swapping while the rack is powered?\u003c\/p\u003e\n\u003cp\u003eA: Yes, the 3500 series architecture permits the removal and insertion of the 86739-01 module while the rack is under power, provided the system is in a safe maintenance state.\u003c\/p\u003e\n\u003cp\u003eQ: How is the relay logic managed during a module firmware update?\u003c\/p\u003e\n\u003cp\u003eA: During firmware updates, the module enters a maintenance mode. Users must ensure that the rack backplane configuration reflects the expected relay states to prevent unexpected trip activations.\u003c\/p\u003e\n\u003cp\u003eQ: Can the vibration inputs be used for redundant protection?\u003c\/p\u003e\n\u003cp\u003eA: Yes. Users can configure the module for 2oo2 voting logic, where both channels must reach the Danger setpoint before the relay activates the machine protection trip.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eBackplane Seating:\u003c\/strong\u003e Ensure the module is fully seated into the 3500 rack slot. Tighten the front panel screws to ensure solid electrical contact between the module and the backplane connector.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eI\/O Termination:\u003c\/strong\u003e Use the associated I\/O module to terminate field wiring. Ensure all cable shields are grounded at the I\/O termination point to prevent ground loop noise from affecting the vibration signals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRelay Wiring:\u003c\/strong\u003e Follow local electrical codes when connecting the SPDT relay outputs. If driving inductive loads (such as heavy-duty contactors), install an external snubber circuit to protect the relay contacts from arcing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfiguration:\u003c\/strong\u003e Utilize the 3500 Rack Configuration software to map the input channels. Always perform a loop check to verify that the programmed relay logic correctly triggers the intended safety shutdown devices.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":43853821935715,"sku":"86739-01","price":188.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0583\/5246\/8067\/files\/94_4d969b50-64ae-4762-9b2c-88ba02128f1e.jpg?v=1764051176","url":"https:\/\/www.autocontrolglobal.com\/products\/86739-01-3500-series-bently-nevada-dual-vibration-monitor-module","provider":"AutoControl Global","version":"1.0","type":"link"}