{"product_id":"emerson-a6220-dual-channel-eccentricity-monitoring-module","title":"Emerson A6220 Dual-Channel Eccentricity Monitoring Module","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eA6220\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis a high-precision\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003evibration acquisition module\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003edesigned for the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eEmerson AMS 6500\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eand\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eMMS 6000\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003emachinery protection systems. It specializes in measuring\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eeccentricity\u003c\/strong\u003e, a key parameter for monitoring the shaft's mechanical bow or thermal distortion (runout) during\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003estartup\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eand\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eshutdown\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eof large-scale steam and gas turbines. The A6220 ensures that the rotor remains sufficiently straight before the turbine reaches operational speeds, preventing catastrophic damage like blade-to-casing contact caused by uneven thermal expansion.\u003c\/p\u003e\n\u003cp\u003eThe module processes signals from\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003edual eddy current (proximity) probes\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eto provide peak-to-peak displacement data. It is crucial for\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eTurning Gear\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eand\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eWarm-up\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003emonitoring, filtering out high-frequency noise and focusing on the low-speed rotational dynamics essential during turbine warm-up phases.\u003c\/p\u003e\n\u003ch3\u003eDetailed Technical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eA6220\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePrimary Function\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDual-Channel Eccentricity \/ Slow-Roll Vibration Monitoring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Configuration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2 independent eddy current sensor inputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMeasurement Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePeak-to-Peak displacement (mils or microns)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFrequency Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.1 Hz to 200 Hz (Optimized for low-speed rotation)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInternal Processing\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAutomatic peak-to-peak detection and linearization\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSystem Bus\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIntegrated AMS 6500 \/ MMS 6000 backplane interface\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBuffered Outputs\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDual front-panel SMB\/BNC connectors for portable data collectors\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIsolation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eGalvanic isolation between field inputs and logic circuits\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStatus Indicators\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFront-panel LEDs for Channel OK, Alert, and Danger status\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3.1 cm x 19.0 cm x 12.8 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.3 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eIndustrial Application Scenarios\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eA6220\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis primarily used in\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eutility-scale power generation\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eduring the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eTurning Gear\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eoperation. It ensures that the rotor does not develop a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003etemporary bow\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eafter a hot trip. If eccentricity exceeds predefined limits, the module triggers interlocks to prevent the turbine from accelerating, protecting critical components like\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003ethrust bearings\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eand\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003einternal seals\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eEngineering FAQ\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHow does eccentricity monitoring differ from standard vibration monitoring?\u003c\/strong\u003e\u003cbr\u003eStandard vibration monitoring measures high-frequency dynamic motion, while the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eA6220\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efocuses on\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003elow-speed shaft bow\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e(static-like displacement) at very low RPMs. This is essential during turbine warm-up or slow-roll operations where traditional vibration modules may filter out low-frequency signals as noise.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCan this module be used for standard radial vibration?\u003c\/strong\u003e\u003cbr\u003eWhile the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eA6220\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eshares some hardware similarities with the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eA6110\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eradial vibration module, it is specifically tuned and optimized for\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eeccentricity monitoring\u003c\/strong\u003e. For high-speed radial vibration, the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eA6110\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis the recommended module.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eAre the sensors powered by the module?\u003c\/strong\u003e\u003cbr\u003eYes, the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eA6220\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eprovides the necessary negative voltage (\u003cstrong\u003etypically -24VDC\u003c\/strong\u003e) to power standard\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eEmerson\/ePRO proximity transducers\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Emerson","offers":[{"title":"Default Title","offer_id":48746758537468,"sku":"A6220","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0787\/9983\/1292\/files\/A62201.jpg?v=1772175918","url":"https:\/\/www.electronicplc.com\/products\/emerson-a6220-dual-channel-eccentricity-monitoring-module","provider":"Electronic PLC","version":"1.0","type":"link"}