{"product_id":"bently-nevada-125712-01-4-channel-relay-module","title":"Bently Nevada 125712-01 4-Channel Relay Module","description":"\u003ch1\u003eBently Nevada 125712-01 4-Channel Relay Module\u003c\/h1\u003e\n\u003cp\u003eConfigured for alarm relay execution and shutdown signal transfer in Bently Nevada 3500 Series machinery protection systems, the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eBently Nevada 125712-01\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e(\u003cstrong\u003e125712\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e4-Channel Relay Module) provides direct electrical interfacing between monitoring modules and external trip or annunciation circuits.\u003c\/p\u003e\n\u003ch3\u003eSuffix Breakdown \u0026amp; Model Matrix\u003c\/h3\u003e\n\u003cp\u003eThe provided documentation identifies a fixed module designation:\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e125712-01\u003c\/strong\u003e. No alternate suffix configuration, firmware revision matrix, or channel variation structure is specified in the supplied material.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003ctable class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003cth class=\"last:pe-10\"\u003eParameter\u003c\/th\u003e\n\u003cth class=\"last:pe-10\"\u003eSpecification\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\u003e125712-01\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eBently Nevada\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eU.S.A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003e4-Channel Relay Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Compatibility\u003c\/td\u003e\n\u003ctd\u003eBently Nevada 3500 Series\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Family\u003c\/td\u003e\n\u003ctd\u003e3500\/32 Relay Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRelay Channels\u003c\/td\u003e\n\u003ctd\u003e4 independent SPDT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptional Relay Type\u003c\/td\u003e\n\u003ctd\u003eSome versions support DPDT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eContact Rating\u003c\/td\u003e\n\u003ctd\u003e5 A at 250 VAC \/ 30 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResponse Time\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;= 10 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation\u003c\/td\u003e\n\u003ctd\u003e1500 Vrms coil-to-contact and channel-to-ground\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e5 W maximum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Source\u003c\/td\u003e\n\u003ctd\u003e24 VDC rack backplane\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-40 deg C to +85 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage Temp\u003c\/td\u003e\n\u003ctd\u003e-55 deg C to +100 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHumidity\u003c\/td\u003e\n\u003ctd\u003e5-95% RH non-condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e177 mm x 127 mm x 70 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e1.1 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCertifications\u003c\/td\u003e\n\u003ctd\u003eCE, UL\/cUL Class I Div 2, ATEX\/IECEx Zone 2, RoHS, ABS Marine\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMTBF\u003c\/td\u003e\n\u003ctd\u003eGreater than 300000 hours at 45 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiagnostic Indicators\u003c\/td\u003e\n\u003ctd\u003eOK, TX\/RX, CH ALARM LEDs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRack Interface\u003c\/td\u003e\n\u003ctd\u003eBackplane-mounted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eRotor Dynamics Alarm Routing and Cross-Talk Suppression\u003c\/h3\u003e\n\u003cp\u003eThe relay module transfers monitor alarm conditions originating from vibration, displacement, and shaft position channels into external shutdown or annunciation circuits. Internal isolation architecture separates relay drive circuitry from low-level transducer measurement paths within the rack backplane structure.\u003c\/p\u003e\n\u003cp\u003eCross-talk suppression methods assist in reducing transient coupling between adjacent relay outputs during simultaneous alarm events. This becomes significant in turbine supervisory instrumentation systems where relay outputs operate in parallel with high-frequency vibration monitoring channels.\u003c\/p\u003e\n\u003cp\u003eRelay execution logic supports programmable AND\/OR combinations and configurable energized or de-energized fail-safe states for rotor dynamic protection sequences.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does the 125712-01 support online hot replacement?\u003c\/strong\u003e\u003cbr\u003eA: The supplied specifications indicate hot-swap capability allowing insertion or removal while rack power remains energized without interrupting adjacent module operation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What external loads can the relay contacts switch?\u003c\/strong\u003e\u003cbr\u003eA: Each relay channel is rated for 5 A at 250 VAC or 30 VDC within the specified electrical limits.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can the module participate in redundant voting logic?\u003c\/strong\u003e\u003cbr\u003eA: The documentation specifies compatibility with 2-out-of-3 voting logic arrangements used in redundant machinery protection architectures.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eVerify relay wiring polarity and terminal allocation before rack energization.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSeparate low-level transducer cabling from relay output conductors where possible.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eConfirm external inductive loads include appropriate suppression devices to reduce contact arcing.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eInspect terminal block torque periodically in high-vibration installations.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eMaintain single-point grounding practices for associated monitoring system shields.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eAvoid routing relay output wiring adjacent to variable frequency drive power cables.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eConfirm hazardous area certification requirements before installation in classified locations.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":44147479674968,"sku":"125712-01","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0670\/2039\/0488\/files\/bently-nevada-3500-32-125712-01-4-channel-relay-module-scqjx3xpeba.png?v=1758599170","url":"https:\/\/www.industriaxplc.com\/products\/bently-nevada-125712-01-4-channel-relay-module","provider":"IndustriaX Limited","version":"1.0","type":"link"}