{"product_id":"bently-nevada-79512-01-4-channel-form-c-relay-card","title":"Bently Nevada 79512-01 4-Channel Form C Relay Card","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe Bently Nevada 79512-01 serves as a high-integrity Relay Output Module within the 3500 Series Machinery Protection System. This module executes critical alarm annunciation and emergency trip functions by providing physical contact closures to external shutdown systems. It interprets logic signals from the 3500 rack backplane and translates them into robust relay outputs. Designed for mission-critical rotating equipment, the 79512-01 ensures that turbines, compressors, and pumps remain protected by triggering immediate corrective actions when the system detects vibration, position, or temperature violations.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003ctd\u003e\u003cstrong\u003eFeature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eProfessional Specification\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e79512-01\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eSystem Series\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eBently Nevada 3500 Series\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eModule Type\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eRelay Output Module\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eRelay Configuration\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eTypically 4 Channels per Module\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eContact Type\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eForm C (SPDT - Single Pole Double Throw)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eContact Rating\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e5 A @ 24 VDC or 120 VAC (Resistive Load)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eIsolation\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eChannel-to-System and Channel-to-Channel Isolation\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eMounting\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eStandard 3500 Series Rack Slot\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eOperating Temp\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e–30 °C to +65 °C (–22 °F to +149 °F)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eCertification\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eCE, UL, CSA Approved for Industrial Environments\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eEngineering Advantages\u003c\/h3\u003e\n\u003cp\u003eThe 79512-01 provides hardware-based safety solutions for complex machinery protection architectures:\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eFail-Safe Logic Integration:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eEngineers can program each relay channel to operate as \"Normally Energized\" or \"Normally De-energized.\" This flexibility allows the 79512-01 to support \"Fail-to-Safe\" logic, ensuring the machinery trips automatically if the protection system loses power.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSuperior Electrical Isolation:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe module features robust channel-to-system isolation. This prevents high-voltage transients on the field-side relay contacts from reaching the sensitive 3500 backplane processors, protecting the core monitoring logic from electrical damage.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eFlexible Logic Mapping:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe 3500 rack software allows users to map any combination of monitor alarms to a specific relay on the 79512-01. This \"Voting Logic\" capability (e.g., 2-out-of-3 voting) reduces nuisance trips while maintaining maximum machinery safety.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHigh-Current Switching Capability:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eWith a 5 Amp contact rating, the 79512-01 directly drives heavy-duty solenoid valves and industrial annunciators. This eliminates the need for intermediate \"interposing\" relays in most shutdown circuits, reducing system latency and hardware complexity.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFAQs\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eIs this Bently Nevada 79512-01 unit 100% Brand New?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. We supply the 79512-01 in\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e100% Brand New and Original\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003econdition. Every module ships in factory-sealed industrial packaging to guarantee the integrity of the relay contacts and internal circuitry.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this module support both Alarm and Trip functions?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. You can configure the individual Form C relays for either Alert (Alarm) or Danger (Trip) conditions. The SPDT configuration provides both normally open and normally closed contacts to suit your specific safety circuit requirements.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCan I replace a 79512-01 without affecting other modules in the rack?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWhile the 3500 rack supports various maintenance activities, you must exercise extreme caution when handling relay modules. Always verify your bypass or \"Lockout Tagout\" procedures before removing a relay card to prevent an accidental machinery trip during maintenance.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the difference between this and newer 3500 relay modules?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 79512-01 remains a standard component for many 3500 system configurations. While newer versions like the 3500\/32 or 3500\/33 offer higher density, the 79512-01 provides a proven, high-reliability solution for systems requiring dedicated Form C contact outputs.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":43246616412250,"sku":"79512-01","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/5957\/0778\/files\/348._821d78dd-1535-4fc3-ba8a-f68c2636dfd1.jpg?v=1776757784","url":"https:\/\/www.spareoil.com\/products\/bently-nevada-79512-01-4-channel-form-c-relay-card","provider":"SpareOil Automation","version":"1.0","type":"link"}