{"product_id":"bently-nevada-3500-50-01-cn-3500-series-tachometer-module","title":"Bently Nevada 3500\/50-01-CN 3500 Series Tachometer Module","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eProviding critical rotational velocity and acceleration data for machinery protection, the \u003cstrong\u003eBently Nevada 3500\/50-01-CN\u003c\/strong\u003e functions as a high-precision, four-channel tachometer module within the 3500 Machinery Protection System. This configuration processes input signals from proximity probes or magnetic pickups to evaluate shaft rotational speed, rotor acceleration, and direction of rotation. Configured with the \u003cstrong\u003e01 I\/O module type\u003c\/strong\u003e, this unit incorporates \u003cstrong\u003einternal terminations\u003c\/strong\u003e to simplify cabinet integration. The \u003cstrong\u003eCN suffix\u003c\/strong\u003e designates country-specific regulatory approvals, ensuring compliance with specialized regional hazardous area certifications.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul style=\"list-style-type: square; color: #2d3748; margin-bottom: 1.5rem; padding-left: 1.5rem;\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFour Independent Channels:\u003c\/strong\u003e Delivers concurrent speed, peak speed, and phase measurement diagnostics across up to four transducer inputs.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInternal Terminations (01 Option):\u003c\/strong\u003e Facilitates direct field wiring connections without requiring external termination blocks or specialized interface cables.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlexible Transducer Compatibility:\u003c\/strong\u003e Directly interfaces with passive magnetic pickups, proximity transducer systems, and active speed sensors.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAdvanced Alarm Tracking:\u003c\/strong\u003e Supports overspeed, underspeed, and zero-speed alert configurations with user-programmable delay parameters.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRobust System Integration:\u003c\/strong\u003e Fully compatible with the standard 3500 rack mainframe, communicating diagnostics directly to the rack backplane.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul style=\"list-style-type: square; color: #2d3748; margin-bottom: 1.5rem; padding-left: 1.5rem;\"\u003e\n  \u003cli\u003eSteam turbine overspeed protection and operational RPM monitoring.\u003c\/li\u003e\n  \u003cli\u003eCentrifugal compressor and expander speed-tracking loops.\u003c\/li\u003e\n  \u003cli\u003eLarge industrial electric motor and generator shaft diagnostics.\u003c\/li\u003e\n  \u003cli\u003eHydroelectric turbine runner speed and phase angle verification.\u003c\/li\u003e\n\u003c\/ul\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 #1a365d; text-align: left;\"\u003e\n        \u003cth style=\"padding: 0.75rem; font-weight: bold;\"\u003eParameter\u003c\/th\u003e\n        \u003cth style=\"padding: 0.75rem; font-weight: bold;\"\u003eSpecification Values\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: 0.75rem; font-weight: bold;\"\u003eManufacturer\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eBently Nevada (Baker Hughes)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eModel Number\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e3500\/50-01-CN\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eModule Type\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eTachometer Module (4-Channel)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eI\/O Module Option\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e01 (Internal Terminations)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eAgency Approvals Option\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eCN (Country Specific \/ China Regional Approvals)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eSignal Inputs\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eMagnetic Pickups, Proximity Transducers (3-wire)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eInput Frequency Range\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.0015Hz to 50kHz (Proximity), 1Hz to 50kHz (Magnetic Pickup)\"\u003e0.0015 Hz to 50,000 Hz\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eOperating Temperature\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e-30 degC to 65 degC\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eStorage Temperature\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e-40 degC to 85 degC\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eCountry of Origin\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eUnited States (U.S.A.)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eShipping Weight (Calculated)\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e3.00 kg (6.61 lbs)\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 #1a365d; text-align: left;\"\u003e\n        \u003cth style=\"padding: 0.75rem; font-weight: bold;\"\u003eTerminal Connection Block\u003c\/th\u003e\n        \u003cth style=\"padding: 0.75rem; 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: 0.75rem; font-weight: bold;\"\u003eCh 1 (SIG \/ COM \/ VT)\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eSpeed Sensor \/ Transducer Input Channel 1\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eCh 2 (SIG \/ COM \/ VT)\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eSpeed Sensor \/ Transducer Input Channel 2\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eCh 3 (SIG \/ COM \/ VT)\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eSpeed Sensor \/ Transducer Input Channel 3\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eCh 4 (SIG \/ COM \/ VT)\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eSpeed Sensor \/ Transducer Input Channel 4\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eSHIELD Terminals\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eInstrumentation Shield Earth Ground Points\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eAlternative Models \u0026amp; Compatibility\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eThe 3500\/50-01-CN module with internal terminations acts as a direct replacement for configurations operating with the 3500\/50-02 external termination structures, provided field wiring is adapted directly to the cabinet panel. When migrating from legacy firmware, confirm that the 3500 Rack Configuration Software is updated to support the CN regulatory profiles to prevent system configuration validation errors during rack download procedures.\u003c\/p\u003e\n\n\u003ch3\u003eApplication Pitfalls \u0026amp; Engineering Notes\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eWhen utilizing passive magnetic pickups, check that the shaft surface velocity and sensor-to-target gap generate sufficient voltage amplitudes (typically \u0026gt; 1V peak-to-peak) at lowest operating speeds. Failure to verify this parameter can result in missing pulses and subsequent under-speed alarms during cold startup sequences. For systems requiring active 3-wire proximity probes, avoid routing speed signal cabling alongside high-power motor lines to prevent high-frequency noise injection from compromising the phase indicators.\u003c\/p\u003e\n\n\u003ch3\u003eCommissioning \u0026amp; Wiring Tips\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eEnsure sensor shield drain wires are terminated strictly to the SHIELD pins on the 3500\/50-01-CN I\/O module. Do not ground the shield at both ends; doing so establishes a ground loop that introduces electromagnetic interference onto the high-frequency speed pulse stream. When configuring the software, accurately input the number of teeth on the multi-tooth speed target to ensure correct scaling of the output RPM values.\u003c\/p\u003e\n\n\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\n\u003cdiv style=\"background-color: #fff5f5; border-left: 4px solid #c53030; padding: 1rem; margin-bottom: 1.5rem;\"\u003e\n  \u003cp style=\"color: #9b2c2c; margin: 0; font-weight: bold;\"\u003eCRITICAL WARNING:\u003c\/p\u003e\n  \u003cp style=\"color: #9b2c2c; margin: 0.5rem 0 0 0;\"\u003ePrior to inserting or removing the tachometer module, verify that the 3500 rack power supply is completely de-energized. Removing modules under power (\"hot-swapping\") in classified hazardous areas represents a severe ignition hazard. Always confirm local atmospheric safety certifications before executing maintenance actions on the control cabinet.\u003c\/p\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; width: 24px; height: 24px; border-radius: 50%; display: flex; justify-content: center; align-items: center; font-weight: bold; margin-right: 0.75rem; flex-shrink: 0;\"\u003e1\u003c\/div\u003e\n    \u003cp style=\"color: #2d3748; margin: 0;\"\u003eSlide the main tachometer module into the front slot of the 3500 chassis, ensuring proper alignment with the backplane connectors.\u003c\/p\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; width: 24px; height: 24px; border-radius: 50%; display: flex; justify-content: center; align-items: center; font-weight: bold; margin-right: 0.75rem; flex-shrink: 0;\"\u003e2\u003c\/div\u003e\n    \u003cp style=\"color: #2d3748; margin: 0;\"\u003eSecure the front-panel captive retention screws to ensure the module frame achieves stable chassis ground connection.\u003c\/p\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; width: 24px; height: 24px; border-radius: 50%; display: flex; justify-content: center; align-items: center; font-weight: bold; margin-right: 0.75rem; flex-shrink: 0;\"\u003e3\u003c\/div\u003e\n    \u003cp style=\"color: #2d3748; margin: 0;\"\u003eLocate the matching slot on the rear of the rack and insert the 3500\/50-01-CN internal termination I\/O module.\u003c\/p\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; width: 24px; height: 24px; border-radius: 50%; display: flex; justify-content: center; align-items: center; font-weight: bold; margin-right: 0.75rem; flex-shrink: 0;\"\u003e4\u003c\/div\u003e\n    \u003cp style=\"color: #2d3748; margin: 0;\"\u003eSecurely tighten the rear I\/O module retention fasteners before connecting transducer cabling to the integrated screw terminal blocks.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":52668311372139,"sku":"3500\/50-01-CN","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/350050-01-CN-juqkomaypry_aa87d70d-ef7f-4228-a2a8-d424429789f0.jpg?v=1765520858","url":"https:\/\/www.plcprotech.com\/ru\/products\/bently-nevada-3500-50-01-cn-3500-series-tachometer-module","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}