{"product_id":"bently-nevada-3500-42m-138708-01-shaft-absolute-i-o-module","title":"Bently Nevada 3500\/42M 138708-01 Shaft Absolute I\/O Module","description":"\u003ch2\u003eBently Nevada 3500\/42M 138708-01 Shaft Absolute I\/O Module\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eBently Nevada 3500\/42M 138708-01\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e3500\/42M\u003c\/strong\u003e I\/O module, operates as a dedicated hardware component for shaft absolute vibration signal acquisition within the 3500 machinery protection system.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003ctd\u003e3500\/42M 138708-01\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eBently Nevada\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOrigin\u003c\/th\u003e\n\u003ctd\u003eU.S.A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd\u003e0.20 kg (0.44 lb)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDimensions\u003c\/th\u003e\n\u003ctd\u003e241.3 mm × 24.4 mm × 99.1 mm (9.50 in × 0.96 in × 3.90 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOperating Temp\u003c\/th\u003e\n\u003ctd\u003e-30 deg C to +65 deg C (-22 F to +150 F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eStorage Temp\u003c\/th\u003e\n\u003ctd\u003e-40 deg C to +85 deg C (-40 F to +185 F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRelative Humidity\u003c\/th\u003e\n\u003ctd\u003e95%, non-condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePower Consumption\u003c\/th\u003e\n\u003ctd\u003e7.7 W typical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eModule Type\u003c\/th\u003e\n\u003ctd\u003eShaft Absolute I\/O Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eChannel Capacity\u003c\/th\u003e\n\u003ctd\u003e4 independent input channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eInput Compatibility\u003c\/th\u003e\n\u003ctd\u003eProximity, velocity, acceleration transducers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eInput Impedance\u003c\/th\u003e\n\u003ctd\u003e10 kΩ (Proximitor and acceleration inputs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAccuracy\u003c\/th\u003e\n\u003ctd\u003e±0.33% typical, ±1% maximum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTransducer Supply\u003c\/th\u003e\n\u003ctd\u003e-24 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOutput Supplies\u003c\/th\u003e\n\u003ctd\u003eProx \u0026amp; Velomitor: 23.9 V \/ 45.5 mA \/ 1.09 W; Prox \u0026amp; Seismoprobe: 6.82 V \/ 45.5 mA \/ 0.31 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOutput Impedance\u003c\/th\u003e\n\u003ctd\u003e550 Ω (General), 300 Ω (Shaft Absolute)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eVoltage Compliance\u003c\/th\u003e\n\u003ctd\u003e0 to +12 VDC across load (0–600 Ω)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eRotor Dynamics and Cross-Talk Suppression\u003c\/h3\u003e\n\u003cp\u003eThe 3500\/42M integrates with proximitor and seismic transducer systems where eddy-current probe scaling is critical for rotor dynamics analysis. Gap voltage validation at -10 VDC ensures accurate shaft motion interpretation. Cross-talk suppression across the four channels maintains fidelity of vibration signatures, preventing interference between proximity and seismic inputs.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions (FAQ)\u003c\/h3\u003e\n\u003cp\u003eQ: Can the 3500\/42M module be hot-swapped in a 3500 rack? A: No. Modules must be inserted or removed only when the rack is de-energized to avoid undefined states.\u003c\/p\u003e\n\u003cp\u003eQ: What is the maximum load resistance supported by the output stage? A: The voltage compliance supports 0 to 600 Ω load resistance across the output range.\u003c\/p\u003e\n\u003cp\u003eQ: How is accuracy maintained across different transducer types? A: The module provides ±0.33% typical accuracy by conditioning each input type with dedicated impedance and supply scaling.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eInstall the module in designated rack slots with full connector engagement.\u003c\/li\u003e\n\u003cli\u003eRoute transducer wiring with shield continuity to minimize EMI.\u003c\/li\u003e\n\u003cli\u003eGround shields at the rack end only to prevent ground loops.\u003c\/li\u003e\n\u003cli\u003eSeparate vibration signal cabling from high-current conductors.\u003c\/li\u003e\n\u003cli\u003eVerify gap voltage and impedance during commissioning to confirm proper transducer biasing.\u003c\/li\u003e\n\u003cli\u003eMaintain ambient conditions within specified operating temperature and humidity limits.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":42985135177987,"sku":"138708-01","price":564.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0640\/7995\/4179\/products\/56076e52c8c7b07170980cc936e56bcc_b114c316-fb31-4b5a-ae31-ec6eb977cd0c.jpg?v=1656578480","url":"https:\/\/www.runtoelectronic.com\/products\/bently-nevada-3500-42m-138708-01-shaft-absolute-i-o-module","provider":"Runto Electric","version":"1.0","type":"link"}