{"product_id":"allen-bradley-1492-ifm40ds24a-4-1492-series-digital-interface-module","title":"Allen-Bradley 1492-IFM40DS24A-4 1492 Series Digital Interface Module","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1492-IFM40DS24A-4\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eserves as a high-density, 40-pin digital interface module within the Allen-Bradley 1492 wiring system family. This module streamlines the connection between PLC I\/O cards and field-side sensors or actuators, significantly reducing the labor required for point-to-point manual wiring. It supports both 24V AC and 24V DC signal types, providing a flexible termination point that includes diagnostic LED indicators and circuit protection. We supply this unit as\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e100% Brand New and factory-original\u003c\/strong\u003e, ensuring clean signal transmission and hardware longevity in demanding industrial environments.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cp\u003eThe 1492-IFM40DS24A-4 incorporates specialized diagnostic circuitry to monitor input\/output health in real-time.\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\u003eModule Type\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eDigital Interface Module (IFM)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003ePin Count\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e40 Pins\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eSupply Voltage (AC)\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e24V AC (60 Hz)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eSupply Voltage (DC)\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\u003eVoltage Range Tolerance\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e+\/- 10%\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eTerminal Type\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eFixed Terminal Block\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eDiagnostics\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eLED Status Indication per Channel\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eProtection\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eBlown Fuse Indicators (for inputs)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eWiring Architecture\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eFour Terminals per I\/O Connection\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 35mm DIN Rail\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\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDual-Voltage Compatibility:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe internal circuitry accommodates both 24V AC and 24V DC voltage types. This versatility allows engineers to standardize on a single interface module across different machine sections, regardless of whether the field devices operate on alternating or direct current.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRapid Fault Isolation:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eIntegrated LED indicators and blown fuse detection provide immediate visual confirmation of circuit status. This feature eliminates the need for manual multi-meter probing during a fault condition, drastically reducing Mean Time to Repair (MTTR) on the plant floor.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eStructured Signal Management:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe \"four terminals per I\/O\" layout provides dedicated landing points for power, neutral\/common, and signal leads. This organization prevents \"bird-nest\" wiring and ensures that every field-side wire maintains a high-integrity connection.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eEnhanced I\/O Protection:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eBy incorporating fuses at the interface level, the 1492-IFM40DS24A-4 acts as a sacrificial barrier. It protects expensive PLC I\/O modules from field-side short circuits or ground faults, confining electrical damage to the easily replaceable interface fuse.\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\u003eCan the 1492-IFM40DS24A-4 replace older 1492 interface models?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes, this module often replaces older, non-fused interface blocks. However, ensure your PLC cable pinout matches the 40-pin header configuration of this specific DS24A-4 variant to maintain signal mapping integrity.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this module require external power for the LEDs?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo, the module draws the necessary power for the diagnostic LEDs directly from the 24V supply voltage of the I\/O signals. The LEDs will illuminate automatically whenever a signal is present or a fuse blows.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the advantage of a fixed terminal block over a removable one?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe fixed terminal block in the 1492-IFM40DS24A-4 provides superior resistance to mechanical vibration. In high-impact applications, fixed terminals prevent the \"contact fretting\" that can occur with pluggable connectors, ensuring consistent electrical continuity.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I confirm this unit is \"Brand New\"?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEvery 1492-IFM40DS24A-4 we ship arrives in its original factory packaging with intact seals. The terminal screws remain in their factory-set positions with zero evidence of previous torque or DIN rail mounting marks.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":52847921463605,"sku":"1492-IFM40DS24A-4","price":66.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/7630\/5461\/files\/1492-IFM40DS120A-41_85e2f2d0-b47b-4288-abe3-02a8bacfbbee.png?v=1778225651","url":"https:\/\/www.5gplc.com\/products\/allen-bradley-1492-ifm40ds24a-4-1492-series-digital-interface-module","provider":"High Five PLC Solution Limited","version":"1.0","type":"link"}