{"product_id":"allen-bradley-440r-d22r2-guardmaster-dual-input-safety-relay","title":"Allen Bradley 440R-D22R2 Guardmaster Dual Input Safety Relay","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eAllen Bradley 440R-D22R2\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eserves as a high-performance Dual Input (DI) Safety Relay within the Guardmaster family. This module consolidates multiple safety functions into a single 22.5mm housing, managing two dual-channel universal inputs effectively. As a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e100% Brand New\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eoriginal component, it facilitates advanced logic configurations including AND\/OR voting via a rotary switch. It interfaces seamlessly with E-stops, light curtains, and safety gates to provide deterministic protection for industrial machinery.\u003c\/p\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cp\u003eThe 440R-D22R2 operates on a standard 24V DC architecture and supports versatile I\/O interfacing.\u003c\/p\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\u003eSpecification\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\u003eRelay Model\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eGuardmaster Dual Input (DI)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eSafety Inputs\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e2 Dual Channel Universal Inputs\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eX1 Input Terminal\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eSingle Wire Safety or OSSD (50mA)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eX2 Output Terminal\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eSingle Wire Safety or OSSD (50mA)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eSafety Outputs\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e2 N.O. (Normally Open)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eAuxiliary Outputs\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1 N.C. (Normally Closed) Solid State\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eLogic Configuration\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eRotary Switch (AND \/ OR Logic)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003ePower Supply\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e24V DC\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eTerminals\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eRemovable \/ Plug-in\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eReset Modes\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eAutomatic\/Manual or Manual Monitored\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eEngineering Advantages\u003c\/h2\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eOptimized Panel Density:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe 440R-D22R2 replaces two standard safety relays by managing two independent safety circuits simultaneously. This reduces DIN rail footprint and simplifies electrical cabinet design.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eFlexible Logic Integration:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe onboard rotary switch allows engineers to toggle between AND\/OR logic. This enables complex safety zoning, such as requiring two independent light curtains to be clear before allowing a machine restart.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSingle Wire Safety (SWS) Compatibility:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eTerminals X1 and X2 support Single Wire Safety technology. This allows for easy expansion and linking between multiple Guardmaster relays using a single wire, drastically reducing field wiring labor and potential points of failure.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSimplified Maintenance:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eRemovable terminal blocks permit rapid hardware replacement without disturbing the existing wire loom. This minimizes Mean Time to Repair (MTTR) during critical maintenance windows.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eOSSD Interfacing:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe relay directly accepts Output Signal Switching Device (OSSD) signals from sensors like laser scanners and light curtains, eliminating the need for interposing hardware.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFAQs\u003c\/h2\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use the 440R-D22R2 to monitor two separate E-stop buttons?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. The module features two universal dual-channel inputs. You can configure them to monitor two E-stops independently or link them via AND\/OR logic depending on your safety protocol.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the purpose of the Solid State Auxiliary Output?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 1 N.C. auxiliary output provides non-safety feedback to a PLC or HMI. This allows the control system to monitor the relay status for diagnostic purposes without utilizing the primary safety contacts.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I change the reset mode from Automatic to Manual Monitored?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYou select the reset mode through the configuration settings on the front of the unit. Manual Monitored reset provides a higher level of safety by requiring a specific transition (off-to-on-to-off) to prevent unintended restarts.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eIs this a genuine, factory-sealed unit?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAbsolutely. We supply only\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e100% Brand New\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eoriginal Allen Bradley hardware. Each unit arrives in its original factory packaging with a verifiable batch code.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":52476211921205,"sku":"440R-D22R2","price":66.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/7630\/5461\/files\/440R-D22R22__1.jpg?v=1774408433","url":"https:\/\/www.5gplc.com\/products\/allen-bradley-440r-d22r2-guardmaster-dual-input-safety-relay","provider":"High Five PLC Solution Limited","version":"1.0","type":"link"}