{"product_id":"epro-mms6312-a6312-shaft-position-measurement-module","title":"EPRO MMS6312\/A6312 Shaft Position Measurement Module","description":"\u003cp\u003eThe \u003cstrong\u003eEmerson MMS6312\/A6312\u003c\/strong\u003e serves as the primary \u003cstrong\u003eMMS6312\u003c\/strong\u003e Shaft Position Measurement Module utilized to execute continuous axial rotor displacement and valve position monitoring across MMS6000 machinery protection system platforms. The module interfaces with analog proximity transducer inputs to deliver real-time position signals directly to safety shutdown circuits and DCS automation networks.\u003c\/p\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\u003eMMS6312\/A6312\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eEmerson \/ Epro\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eGERMANY\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.45 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e128 mm x 22.5 mm x 114.5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-20 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\u003e6.0 W at 24 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Channels\u003c\/td\u003e\n\u003ctd\u003e2-channel eddy-current probe input\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Signal\u003c\/td\u003e\n\u003ctd\u003e4-20 mA HART loop protocol\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMeasurement Range\u003c\/td\u003e\n\u003ctd\u003eDual-channel shaft axial displacement \/ position\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Supply\u003c\/td\u003e\n\u003ctd\u003e+24 VDC nominal (18 VDC to 31.2 VDC range)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation\u003c\/td\u003e\n\u003ctd\u003eChannel-to-channel and channel-to-ground isolation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003e4-20 mA HART Loop Protocol and DCS Connectivity\u003c\/h3\u003e\n\u003cp\u003eThe MMS6312\/A6312 incorporates dual 4-20 mA HART loop protocol outputs engineered to transmit digitized position telemetry over analog field wiring. Internal signal processing circuits feature robust channel-to-channel isolation to prevent electrical interference and ground loop currents between adjacent measurement channels. Precision cold junction compensation (CJC) logic and active signal conditioning convert raw eddy-current probe DC voltages into scaled axial thrust displacement parameters. Standardized loop signals integrate directly with FOUNDATION Fieldbus, Profibus PA, and centralized DCS networks (such as Emerson Ovation and DeltaV) for continuous machine protection and diagnostics.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: How does channel-to-channel isolation affect signal accuracy in field cabinets?\u003c\/p\u003e\n\u003cp\u003eA: Channel-to-channel isolation isolates each measurement circuit electrically, preventing stray ground loops, high-voltage switching spikes, and cross-talk noise from corrupting axial displacement readings between channels.\u003c\/p\u003e\n\u003cp\u003eQ: Can the MMS6312 module be removed under power during live plant operation?\u003c\/p\u003e\n\u003cp\u003eA: Hot-swapping is permitted provided the module resides in a rack equipped with isolated power bus backplanes, though temporary manual override or bypass on the receiving DCS\/SIS is required to prevent false trip execution.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eMount the module securely into the designated MMS6000 rack chassis or DIN-rail base, verifying full grounding contact with the cabinet busbar.\u003c\/li\u003e\n\u003cli\u003eRoute high-impedance eddy-current probe cabling in dedicated grounded metal conduits separated from high-voltage AC lines to maintain noise isolation.\u003c\/li\u003e\n\u003cli\u003eTerminate all signal cable shields at a single cabinet instrument ground point to eliminate potential ground loops.\u003c\/li\u003e\n\u003cli\u003eCheck that field power supply wiring provides steady 24 VDC power within the allowable tolerance range before powering up the channel inputs.\u003c\/li\u003e\n\u003cli\u003eSecure all terminal block retention screws to prevent vibration-induced loosening under continuous industrial operating conditions.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Emerson Epro","offers":[{"title":"Default Title","offer_id":45499120615539,"sku":"MMS6312\/A6312","price":88.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0644\/4348\/2227\/files\/MMS68232_Cocoai_39f59bc9-99cb-408d-b887-8cdf5d962953.jpg?v=1789453638","url":"https:\/\/www.dcssupplier.com\/ar\/products\/epro-mms6312-a6312-shaft-position-measurement-module","provider":"DcsSupplier Limited","version":"1.0","type":"link"}