{"product_id":"1746-iv32-allen-bradley-32-channel-24v-dc-input-slc-500-module","title":"1746-IV32 Allen-Bradley 32-Channel 24V DC Input SLC 500 Module","description":"\u003ch3\u003eEngineering Overview \u0026amp; Architecture\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong style=\"color: #0056b3;\"\u003e1746-IV32\u003c\/strong\u003e is a high-density 32-channel discrete input module engineered specifically for the \u003cstrong style=\"color: #0056b3;\"\u003eAllen-Bradley\u003c\/strong\u003e \u003cstrong style=\"color: #0056b3;\"\u003eSLC 500\u003c\/strong\u003e series by \u003cstrong style=\"color: #0056b3;\"\u003eRockwell Automation\u003c\/strong\u003e. Designed for sinking-device compatibility, this current-sourcing module processes 24V DC signals across four isolated groups of eight channels. Its compact single-slot footprint optimizes cabinet space while maximizing digital point density for large control schemes.\u003c\/p\u003e\n\u003cp\u003eAccording to \u003cstrong style=\"color: #0056b3;\"\u003eGlobal PLC Spare HUB's Insight\u003c\/strong\u003e, panel builders favor this specific module when retrofitting legacy relay logic panels with solid-state sensor networks. Field data highlights that maintaining proper thermal spacing above the rack prevents localized heat buildup, preserving input accuracy during continuous 60-degree ambient cycles.\u003c\/p\u003e\n\n\u003ch3\u003eTechnical Specification Matrix\u003c\/h3\u003e\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"border-collapse: collapse; width: 100%; border-color: #ddd;\"\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eManufacturer\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003eRockwell Automation\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003eAllen-Bradley\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eCatalog Number \/ Part No.\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e\u003cstrong\u003e1746-IV32\u003c\/strong\u003e\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eProduct Family\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e\n\u003cstrong\u003eSLC 500\u003c\/strong\u003e Discrete Control Architecture\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eModule Category\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e32-Channel 24V DC Sourcing Input Module (\u003cstrong style=\"color: #0056b3;\"\u003e1746-IV32\u003c\/strong\u003e)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eInput Voltage Range\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e15 to 30V DC at 50 degrees Celsius; 15 to 26.4V DC at 60 degrees Celsius\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eSignal Propagation Delay\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003eOn-state: 3 milliseconds max; Off-state: 3 to 8 milliseconds max\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eCurrent Characteristics\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003eNominal input current 5.1 mA at 24V DC; Max off-state current 1.5 mA\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eBackplane Power Load\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e106 mA at 5V DC (0.050A nominal draw)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eThermal Dissipation\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e0.20W per point, up to 6.65W total module dissipation\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eIsolation Protection\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e1500V AC tested optical isolation from backplane for 1 minute\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eEnvironmental Ratings\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003eOperating temp 0 to 60 °C; Storage -40 to 85 °C; 5-95% non-condensing humidity\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eVibration and Shock\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e2.5G at 57-200 Hz operational vibration; 30G operating shock resistance\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eDeployment and Mechanical Setup\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eDe-energize the main rack power supply completely before sliding the \u003cstrong style=\"color: #0056b3;\"\u003e1746-IV32\u003c\/strong\u003e into any available chassis slot.\u003c\/li\u003e\n  \u003cli\u003eVerify that the backplane power supply budget accommodates the additional 106 mA draw prior to installation.\u003c\/li\u003e\n  \u003cli\u003eSecure module retaining screws firmly to ensure continuous chassis grounding and industrial noise immunity.\u003c\/li\u003e\n  \u003cli\u003eRoute field wiring away from high-voltage AC conduits to prevent inductive coupling on low-level DC inputs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eDiagnostic Insights and Maintenance\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eFront-panel status indicators display real-time channel status for rapid visual troubleshooting during machine cycles.\u003c\/li\u003e\n  \u003cli\u003eSeries A, B, and C units feature internal non-replaceable 2.5A group fuses protecting common return paths. Note that Series D models omit onboard group fusing, requiring external circuit protection.\u003c\/li\u003e\n  \u003cli\u003eRSLogix 500 software status tables allow engineers to monitor raw bit states directly to verify field sensor continuity.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHardware Compatibility Profile\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatible with all standard local, extended, and distributed \u003cstrong style=\"color: #0056b3;\"\u003eSLC 500\u003c\/strong\u003e chassis backplanes.\u003c\/li\u003e\n  \u003cli\u003eInterfaces seamlessly with standard 24V DC 3-wire and 4-wire PNP inductive proximity switches, photoelectric eyes, and pushbuttons.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCompliance and Certifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eMeets strict industrial electrical safety parameters including UL and C-UL Class I Division 2 hazardous location listings.\u003c\/li\u003e\n  \u003cli\u003eComplies with CE directive requirements and C-Tick standards for electromagnetic compatibility.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eOrder Fulfillment and Support Terms\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003ePackage includes one \u003cstrong style=\"color: #0056b3;\"\u003e1746-IV32\u003c\/strong\u003e module unit packaged in anti-static shielding material.\u003c\/li\u003e\n  \u003cli\u003eExpedited global logistics managed through premier carriers including FedEx, UPS, and DHL.\u003c\/li\u003e\n  \u003cli\u003eGuaranteed rapid dispatch window within 24 to 48 hours of order confirmation.\u003c\/li\u003e\n  \u003cli\u003eProtected by a comprehensive 12-month commercial replacement warranty.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTarget Applications and Equipment Suitability\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eHigh-speed automated assembly machinery requiring dense discrete sensor feedback within compact control enclosures.\u003c\/li\u003e\n  \u003cli\u003eMaterial handling sortation systems featuring extensive arrays of 24V DC optical and proximity detection points.\u003c\/li\u003e\n  \u003cli\u003ePackaging and bottling lines needing robust noise immunity against frequent solenoid and relay switching transients.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eExpert Engineering FAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What key factor should I evaluate when migrating from an older Series A module to a Series D unit?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: According to \u003cstrong style=\"color: #0056b3;\"\u003eGlobal PLC Spare HUB Review\u003c\/strong\u003e, you must verify external short-circuit protection, as Series D versions lack the internal 2.5A group fuses found on Series A through C iterations.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How does ambient enclosure temperature influence the maximum allowable input voltage?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Operating the hardware above 50 degrees Celsius reduces the upper voltage ceiling from 30V DC down to 26.4V DC to prevent thermal degradation across internal current-limiting resistors.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Can I use this sinking input card with NPN-type output sensors?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: No, the \u003cstrong style=\"color: #0056b3;\"\u003e1746-IV32\u003c\/strong\u003e is a current-sourcing input module designed exclusively to interface with PNP (source-type) field devices that switch the positive 24V DC rail.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What diagnostic step should I take if multiple channels in a single group fail simultaneously?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Check the group common terminal wiring and verify whether an overcurrent event has tripped the internal group fuse on Series A-C hardware.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How can I optimize input filtering to eliminate false triggers from machinery vibration?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Configure the selectable input filter parameters inside your programming software to extend filter times beyond the hardware's standard propagation delay.\u003c\/p\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":45013896724662,"sku":"1746-IV32","price":141.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/1746-IV32_2f6bd1af-a785-4b4d-853e-5c78e6d9aa60.jpg?v=1793170738","url":"https:\/\/www.plcsparehub.com\/products\/1746-iv32-allen-bradley-32-channel-24v-dc-input-slc-500-module","provider":"Global PLC Spare Hub","version":"1.0","type":"link"}