{"product_id":"emerson-epro-a6740-12-output-relay-module","title":"Emerson EPRO A6740\/12 Output Relay Module","description":"\u003cp\u003eConfigured for relay contact switching and interlock execution in machinery protection systems, the \u003cstrong\u003eEmerson EPRO A6740\/12\u003c\/strong\u003e (\u003cstrong\u003eA6740\/12\u003c\/strong\u003e Output Relay Module) provides direct physical\/electrical execution. It converts system logic commands into discrete contact state outputs across MMS6000 platforms.\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\u003eA6740\/12\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\u003eBase Model\u003c\/td\u003e\n\u003ctd\u003eA6740\/12\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\u003e320 g net (450 g packaged)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e160 mm L x 60 mm W x 128.4 mm H\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 to 65 deg C (32 to 149 deg F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eRack backplane powered\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Type\u003c\/td\u003e\n\u003ctd\u003e16-Channel Relay\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Format\u003c\/td\u003e\n\u003ctd\u003eDIN 41494 Eurocard (3HE\/12TE)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage Temp\u003c\/td\u003e\n\u003ctd\u003e-40 to 70 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHumidity Tolerance\u003c\/td\u003e\n\u003ctd\u003e5% to 95% non-condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVibration Proof\u003c\/td\u003e\n\u003ctd\u003e0.15 mm at 10-55 Hz, 19.6 m\/s2 at 55-150 Hz (IEC 68-2-6)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShock Resistance\u003c\/td\u003e\n\u003ctd\u003e98 m\/s2 for 16 ms pulses (IEC 68-2-29)\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 Channel-to-Channel Isolation\u003c\/h3\u003e\n\u003cp\u003eThe A6740\/12 relay module features 16 discrete relay channels engineered with channel-to-channel isolation to prevent electrical interference between external switching circuits. This galvanic separation ensures that contact closures or field ground faults do not couple into adjacent control loops or 4-20 mA HART DCS instrumentation interfaces connected within the main machinery monitoring system.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What mounting standards and rack formats are compatible with the A6740\/12 module?\u003c\/p\u003e\n\u003cp\u003eA: The module conforms to the DIN 41494 Eurocard standard in a 3HE\/12TE form factor, fitting standard Eurocard chassis and Emerson EPRO MMS6000 systems.\u003c\/p\u003e\n\u003cp\u003eQ: What environmental shock and vibration resistance limits apply to the module?\u003c\/p\u003e\n\u003cp\u003eA: The module complies with IEC 68-2-6 for vibration (0.15 mm at 10-55 Hz, 19.6 m\/s2 at 55-150 Hz) and IEC 68-2-29 for shock resistance (98 m\/s2 for 16 ms pulses).\u003c\/p\u003e\n\u003cp\u003eQ: What wiring termination method is used for field contact connections?\u003c\/p\u003e\n\u003cp\u003eA: Field connections utilize spring-clip terminal connectors to maintain wire contact retention under vibration without requiring screwed terminal maintenance.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003ePower down the designated rack slot before inserting the Eurocard module into the MMS6000 chassis.\u003c\/li\u003e\n\u003cli\u003eAlign the module card edges with the 3HE\/12TE rack guide slots and push firmly until rear connectors engage the backplane.\u003c\/li\u003e\n\u003cli\u003eFasten the front panel retention screws to secure the unit against mechanical vibration and ensure frame grounding.\u003c\/li\u003e\n\u003cli\u003eConnect field output conductors using the spring-clip terminal connectors, verifying stripping lengths to prevent exposed leads.\u003c\/li\u003e\n\u003cli\u003eEnsure field relay contact load voltages and currents do not exceed maximum specified ratings before energizing loop power.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"EMERSON","offers":[{"title":"Default Title","offer_id":53331428966709,"sku":"A6740\/12","price":66.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/7630\/5461\/files\/A674010_7879f5b6-6164-45ec-a3fa-e2ea138d9e82.png?v=1787120048","url":"https:\/\/www.5gplc.com\/products\/emerson-epro-a6740-12-output-relay-module","provider":"High Five PLC Solution Limited","version":"1.0","type":"link"}