{"title":"Allen-Bradley 1794 Flex I\/O","description":"\u003cp\u003eThe Allen-Bradley 1794 Flex I\/O series is a modular, distributed I\/O platform designed to reduce engineering costs and installation time by providing a flexible, rackless architecture for complex industrial control systems. Engineered for high-density applications, this series allows users to mix and match digital, analog, and specialty modules on a variety of terminal bases to suit specific field-side wiring requirements. The 1794 system supports multiple industrial networks, including EtherNet\/IP, ControlNet, and DeviceNet, through interchangeable adapter modules. Its unique \"removal and insertion under power\" (RIUP) capability ensures maximum system uptime by allowing module replacement without disrupting the backplane power or communication. With its compact footprint and support for HART protocol and extreme environment versions (XT), the Flex I\/O series remains a preferred choice for distributed intelligence in process control and manufacturing environments.\u003c\/p\u003e","products":[{"product_id":"1794-ow8xt-rockwell-automation-isolated-relay-output-flex-i-o","title":"1794-OW8XT Rockwell Automation Isolated Relay Output FLEX I\/O","description":"\n    \u003ch2 style=\"font-size: 1.8em; color: #cd3d3d; margin: 0; text-transform: uppercase;\"\u003e1794-OW8XT | FLEX I\/O XT Isolated Relay Output Module\u003c\/h2\u003e\n    \u003cp style=\"font-size: 1.1em; color: #555; margin-top: 5px;\"\u003eIndustrial-Grade 8-Channel N.O. Relay Solution for Extended Environments\u003c\/p\u003e\n  \n\n  \u003carticle\u003e\n    \u003ch3 style=\"background: #333; color: #fff; padding: 10px 15px; font-size: 1.1em;\"\u003eCritical Engineering Parameters\u003c\/h3\u003e\n    \u003ctable style=\"width: 100%; border-collapse: collapse; margin-top: 15px; font-size: 0.95em;\"\u003e\n      \u003ctr style=\"border-bottom: 1px solid #eee;\"\u003e\n        \u003cth style=\"text-align: left; padding: 12px; background: #f9f9f9; width: 30%;\"\u003eCatalog Number\u003c\/th\u003e\n        \u003ctd style=\"padding: 12px; font-weight: bold; color: #cd3d3d;\"\u003e1794-OW8XT\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #eee;\"\u003e\n        \u003cth style=\"text-align: left; padding: 12px; background: #f9f9f9;\"\u003eOutput Configuration\u003c\/th\u003e\n        \u003ctd style=\"padding: 12px;\"\u003e8 Individually Isolated, Normally Open (N.O.) Relays\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #eee;\"\u003e\n        \u003cth style=\"text-align: left; padding: 12px; background: #f9f9f9;\"\u003eVoltage Rating\u003c\/th\u003e\n        \u003ctd style=\"padding: 12px;\"\u003e24V DC Nominal (19.2 - 31.2V DC Range)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #eee;\"\u003e\n        \u003cth style=\"text-align: left; padding: 12px; background: #f9f9f9;\"\u003eContact Voltage\u003c\/th\u003e\n        \u003ctd style=\"padding: 12px;\"\u003eUp to 250V AC \/ 125V DC Switching Capacity\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #eee;\"\u003e\n        \u003cth style=\"text-align: left; padding: 12px; background: #f9f9f9;\"\u003eIsolation Voltage\u003c\/th\u003e\n        \u003ctd style=\"padding: 12px;\"\u003e250V Continuous (Basic Insulation Type)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #eee;\"\u003e\n        \u003cth style=\"text-align: left; padding: 12px; background: #f9f9f9;\"\u003eSwitching Frequency\u003c\/th\u003e\n        \u003ctd style=\"padding: 12px;\"\u003e0.3 Hz Max (1 operation per 3 seconds at rated load)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #eee;\"\u003e\n        \u003cth style=\"text-align: left; padding: 12px; background: #f9f9f9;\"\u003eSpecial Protection\u003c\/th\u003e\n        \u003ctd style=\"padding: 12px;\"\u003eConformal Coated (XT Series) for Harsh Environments\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/table\u003e\n  \u003c\/article\u003e\n\n  \u003carticle style=\"margin-top: 35px; background: #fdfdfd; border: 1px dashed #ccc; padding: 20px;\"\u003e\n    \u003ch3 style=\"margin-top: 0; color: #333; border-bottom: 2px solid #cd3d3d; display: inline-block;\"\u003eGlobal PLC Spare HUB's Insight\u003c\/h3\u003e\n    \u003cp style=\"font-style: italic; color: #444; margin-top: 15px;\"\u003e\n      \"The 'XT' suffix in 1794-OW8XT signifies Extended Temperature and Conformal Coating. In our field audits, we consistently see this module outperform standard relay cards in high-humidity or corrosive atmosphere applications (like wastewater or oil\/gas skids). Unlike standard solid-state outputs, the electromagnetic relays in the 1794-OW8XT handle high-voltage AC loads with zero leakage current, crucial for preventing 'ghost' activation of downstream solenoids.\"\n    \u003c\/p\u003e\n    \u003ch4 style=\"margin-bottom: 8px;\"\u003eField Diagnostics \u0026amp; Application:\u003c\/h4\u003e\n    \u003cul style=\"padding-left: 20px; color: #444;\"\u003e\n      \u003cli\u003e\n\u003cstrong\u003eXT Resilience:\u003c\/strong\u003e Best suited for non-climate-controlled remote I\/O cabinets where temperatures fluctuate significantly.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eDiagnostic Tip:\u003c\/strong\u003e Monitor the 1.2ms bounce time; if your logic requires micro-second synchronization, consider an interposing solid-state relay.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eMounting Guide:\u003c\/strong\u003e Must be grounded via zinc-plated yellow-chromate steel DIN rail to ensure EMC compliance and reduce electrical noise interference.\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/article\u003e\n\n  \u003carticle style=\"margin-top: 35px;\"\u003e\n    \u003ch3 style=\"background: #333; color: #fff; padding: 10px 15px; font-size: 1.1em;\"\u003eCommercial Logistics \u0026amp; Service\u003c\/h3\u003e\n    \u003cp style=\"padding-left: 15px;\"\u003e\n      \u003cstrong\u003eWarranty:\u003c\/strong\u003e 12-Month Comprehensive Replacement Guarantee.\u003cbr\u003e\n      \u003cstrong\u003eGlobal Shipping:\u003c\/strong\u003e Priority Express via \u003cstrong\u003eFedEx, UPS, and DHL\u003c\/strong\u003e.\u003cbr\u003e\n      \u003cstrong\u003eQuality Assurance:\u003c\/strong\u003e 100% Original Rockwell Automation Surplus or New, rigorously tested prior to dispatch.\n    \u003c\/p\u003e\n  \u003c\/article\u003e\n\n  \u003carticle style=\"margin-top: 30px; border-top: 2px solid #eee; padding-top: 20px;\"\u003e\n    \u003ch3 style=\"text-align: center; color: #cd3d3d;\"\u003eProfessional Engineering FAQ \u0026amp; Procurement Guide\u003c\/h3\u003e\n    \n    \u003cp style=\"font-weight: bold; margin-bottom: 0;\"\u003eQ1: What defines the specific advantage of the 1794-OW8XT version?\u003c\/p\u003e\n    \u003cp style=\"margin-top: 5px; padding-left: 15px; border-left: 3px solid #ccc;\"\u003eA1: The XT version features conformal coating on the internal circuitry and is rated for extreme temperatures. This makes the 1794-OW8XT essential for environments where condensation or airborne contaminants could cause premature failure in standard relay modules.\u003c\/p\u003e\n\n    \u003cp style=\"font-weight: bold; margin-bottom: 0;\"\u003eQ2: Why is external fusing mandatory for 1794-OW8XT output channels?\u003c\/p\u003e\n    \u003cp style=\"margin-top: 5px; padding-left: 15px; border-left: 3px solid #ccc;\"\u003eA2: Relay contacts are susceptible to welding in short-circuit conditions. Since the 1794-OW8XT manages up to 250V AC, an external 2A fuse per point is best practice to protect the internal relay from inductive flyback or overcurrent damage.\u003c\/p\u003e\n\n    \u003cp style=\"font-weight: bold; margin-bottom: 0;\"\u003eQ3: How do I select the correct terminal base for a 1794-OW8XT installation?\u003c\/p\u003e\n    \u003cp style=\"margin-top: 5px; padding-left: 15px; border-left: 3px solid #ccc;\"\u003eA3: It is compatible with 9 different terminal bases, including 1794-TB3 and -TBN. For high-voltage applications (up to 250V), we recommend the 1794-TBN or -TBNF to ensure proper spacing and mechanical fuse protection.\u003c\/p\u003e\n\n    \u003cp style=\"font-weight: bold; margin-bottom: 0;\"\u003eQ4: Does the 1.0mA leakage current through the snubber affect low-power loads?\u003c\/p\u003e\n    \u003cp style=\"margin-top: 5px; padding-left: 15px; border-left: 3px solid #ccc;\"\u003eA4: Yes, it can. The snubber circuit passes ~1.0mA for noise suppression. If you are driving ultra-low-power LEDs or high-impedance inputs, ensure this current won't keep the load 'ON' when the relay is in the 'OFF' state.\u003c\/p\u003e\n\n    \u003cp style=\"font-weight: bold; margin-bottom: 0;\"\u003eQ5: Is the 1794-OW8XT suitable for high-frequency switching tasks?\u003c\/p\u003e\n    \u003cp style=\"margin-top: 5px; padding-left: 15px; border-left: 3px solid #ccc;\"\u003eA5: Absolutely not. With a maximum switching frequency of 0.3Hz (one cycle every 3 seconds) at rated load, this module is designed for static state switching (pumps, fans, contactors). For PWM or fast pulses, select a solid-state output module.\u003c\/p\u003e\u003c\/article\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":45013911142582,"sku":"1794-OW8XT","price":176.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/1794-OW8XT_02139f8c-6619-4996-a414-db719de79e9e.jpg?v=1774945001"},{"product_id":"1794-oa16-16-point-ac-digital-output-module-allen-bradley-flex-i-o-series","title":"1794-OA16 16-Point AC Digital Output Module | Allen-Bradley Flex I\/O Series","description":"\u003ch3\u003eGlobal PLC Spare HUB's Insight\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003e\u003cspan style=\"color: #d35400;\"\u003e1794-OA16\u003c\/span\u003e\u003c\/strong\u003e is a cornerstone component of the Rockwell Automation Flex I\/O distributed architecture. Our technical experts highlight its extreme versatility in handling inductive AC loads, such as contactors and sirens. Because the channels are non-isolated, this module is exceptionally compact, making it the primary choice for space-constrained industrial control cabinets where high-density 120VAC output switching is required.\u003c\/p\u003e\n\n\u003ch3\u003eApplication Suitability and Diagnostic Capability\u003c\/h3\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSuitable Equipment:\u003c\/strong\u003e Compatible with all 1794 Flex I\/O communication adapters for seamless integration into Logix or legacy PLC systems.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCore Applications:\u003c\/strong\u003e Energizing AC relay coils, solenoid-actuated valves, contactor control, and high-visibility industrial alarm signaling (horns\/buzzers).\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eDiagnostic Capability:\u003c\/strong\u003e Features 16 dedicated yellow LED status indicators for per-channel output verification, allowing maintenance staff to pinpoint signal faults instantly without secondary diagnostic tools.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Allen-Bradley (Rockwell Automation)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e \u003cstrong\u003e\u003cspan style=\"color: #d35400;\"\u003e1794-OA16\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eOutput Type:\u003c\/strong\u003e 16-Channel Non-isolated Digital AC Output\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eVoltage Range:\u003c\/strong\u003e 74 to 132 VAC (120 VAC Nominal)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCurrent Rating:\u003c\/strong\u003e 0.5A per channel (4.0A total module current)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eScan Delay:\u003c\/strong\u003e ½ AC cycle (Off-to-On\/On-to-Off)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePower Dissipation:\u003c\/strong\u003e 4.7 Watts at 0.5A maximum\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eEnvironmental:\u003c\/strong\u003e 0 to 55°C operating range; 5G vibration resistance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eConfiguration Breakdown (Flex I\/O Series)\u003c\/h3\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003e1794:\u003c\/strong\u003e Flex I\/O Platform Base\n    \u003cul\u003e\n        \u003cli\u003e\n\u003cstrong\u003eOA:\u003c\/strong\u003e AC Digital Output Module\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003e16:\u003c\/strong\u003e 16-Channel Density Configuration\u003c\/li\u003e\n    \u003c\/ul\u003e\n    \u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eLogistics and Warranty Assurance\u003c\/h3\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eShipping Partners:\u003c\/strong\u003e Secure and priority worldwide transit via FedEx, UPS, or DHL.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eDispatch:\u003c\/strong\u003e Rapid order fulfillment with 24-48 hour processing.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e Protected by our industry-standard 12-month quality and performance guarantee.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eEngineering Frequently Asked Questions\u003c\/h3\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Why is external fusing required with the 1794-TBNF base, but not others?\u003c\/strong\u003e\u003cbr\u003e\nA: The 1794-TBNF base includes integrated fuse holders specifically designed to protect the non-isolated outputs of the \u003cstrong\u003e\u003cspan style=\"color: #d35400;\"\u003e1794-OA16\u003c\/span\u003e\u003c\/strong\u003e; using a non-fused base (like the TBN) necessitates external circuit protection to satisfy electrical safety codes.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How does the \"non-isolated\" nature of this module affect my wiring strategy?\u003c\/strong\u003e\u003cbr\u003e\nA: Because outputs are non-isolated, all channels share a common return path to the AC source; ensure your common wiring is correctly sized for the aggregate load and avoid mixing different voltage phases within the same module.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Selection Guide: How do I choose the right terminal base for my cabinet space?\u003c\/strong\u003e\u003cbr\u003e\nA: If you require integrated fusing, opt for the 1794-TBNF. For standard space-saving applications, the 1794-TB2 or TB3 offers a smaller footprint, but remember you must provide your own independent overcurrent protection.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Experience Tip: What causes the 2.25 mA off-state leakage current?\u003c\/strong\u003e\u003cbr\u003e\nA: This is a byproduct of the module's internal snubbing circuitry; be cautious when using this module to drive very low-power loads, as this leakage current can sometimes keep sensitive indicators or relays energized even when commanded \"OFF.\"\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What is the most efficient way to maintain the 1794-OA16 in high-vibration environments?\u003c\/strong\u003e\u003cbr\u003e\nA: Regularly inspect the terminal base-to-module locking mechanism. The 5G vibration rating is contingent upon the module being securely seated and the keyswitch correctly positioned (Position 8) to prevent accidental mismating.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":45013989654710,"sku":"1794-OA16","price":136.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/1794-OA16.jpg?v=1779703274"},{"product_id":"1794-ib8-allen-bradley-flex-i-o-digital-input-module-plc-expansion","title":"1794-IB8 Allen-Bradley Flex I\/O Digital Input Module PLC Expansion","description":"\u003ch3\u003e\u003cstrong\u003e\u003cspan style=\"color: #d9534f;\"\u003e1794-IB8 Allen-Bradley Flex I\/O Digital Input Module\u003c\/span\u003e\u003c\/strong\u003e\u003c\/h3\u003e\n\u003ch3\u003e\u003cstrong\u003eStructured Product Architecture\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan style=\"color: #d9534f;\"\u003e1794-IB8\u003c\/span\u003e\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003eSeries → \u003ca href=\"https:\/\/www.plcsparehub.com\/collections\/allen-bradley-1794-flex-i-o\"\u003e\u003cstrong\u003eFlex I\/O 1794\u003c\/strong\u003e\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003eType → Digital Input Module\u003c\/li\u003e\n\u003cli\u003eInput Design → 8 Current Sinking Channels\u003c\/li\u003e\n\u003cli\u003eMounting → DIN Rail with Terminal Base\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eConfiguration Breakdown\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectrical Layer\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003eNominal Voltage → 24V DC\u003c\/li\u003e\n\u003cli\u003eOperating Voltage → 10–31.2V DC\u003c\/li\u003e\n\u003cli\u003eOn-State Current → 2–12 mA\u003c\/li\u003e\n\u003cli\u003eOff-State Voltage → ≤5V DC\u003c\/li\u003e\n\u003cli\u003eInput Impedance → 4.6 kΩ\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Layer\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003eFlexBus Current → 20 mA @ 5V DC\u003c\/li\u003e\n\u003cli\u003ePower Dissipation → 3.5W max\u003c\/li\u003e\n\u003cli\u003eHot Swap Capability → Supported\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNetwork Layer\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003eEtherNet\/IP → Supported\u003c\/li\u003e\n\u003cli\u003eControlNet → Supported\u003c\/li\u003e\n\u003cli\u003eDeviceNet → Supported\u003c\/li\u003e\n\u003cli\u003eRemote I\/O → Compatible\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eMechanical and Interface Design\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWeight: 0.19 lbs (0.09 kg)\u003c\/li\u003e\n\u003cli\u003eTerminal Base Compatibility:\n\u003cul\u003e\n\u003cli\u003e1794-TB3\u003c\/li\u003e\n\u003cli\u003e1794-TB3S\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eInstallation via DIN rail mounting\u003c\/li\u003e\n\u003cli\u003eCompact modular footprint\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eOperational Characteristics\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOperating Temperature: 0°C to 55°C\u003c\/li\u003e\n\u003cli\u003eHumidity Range: 5% to 95% non-condensing\u003c\/li\u003e\n\u003cli\u003eStable signal acquisition across all channels\u003c\/li\u003e\n\u003cli\u003eOptimized for distributed I\/O architectures\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eDiagnostic and Status Indication\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e16 LED indicators for channel status\u003c\/li\u003e\n\u003cli\u003eReal-time input signal visualization\u003c\/li\u003e\n\u003cli\u003eSupports diagnostic module variants\u003c\/li\u003e\n\u003cli\u003eImproves troubleshooting efficiency\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eApplication Integration\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDistributed control systems\u003c\/li\u003e\n\u003cli\u003eFactory automation lines\u003c\/li\u003e\n\u003cli\u003eProcess monitoring systems\u003c\/li\u003e\n\u003cli\u003eMaterial handling equipment\u003c\/li\u003e\n\u003cli\u003eMachine control panels\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eGlobal PLC Spare HUB's Insight\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe \u003cspan style=\"color: #d9534f;\"\u003e\u003cstrong\u003e1794-IB8\u003c\/strong\u003e\u003c\/span\u003e delivers reliable digital signal acquisition in modular systems. It suits applications requiring flexible I\/O expansion. It integrates efficiently with Flex I\/O architectures. Engineers select it for hot-swap capability and network versatility. It performs well in dynamic industrial environments.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eLogistics and Warranty\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 12 months\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDispatch Time:\u003c\/strong\u003e 24–48 hours\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShipping Options:\u003c\/strong\u003e FedEx, UPS, DHL\u003c\/li\u003e\n\u003cli\u003eIndustrial-grade packaging ensures safe delivery\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eFAQ\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the advantage of current sinking inputs?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThey simplify wiring with sourcing field devices. They improve compatibility in industrial circuits.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan the module be replaced without shutdown?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes, it supports hot swapping under power. This reduces downtime during maintenance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow to select a compatible terminal base?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eChoose 1794-TB3 or 1794-TB3S based on wiring preference. Confirm mechanical fit and wiring requirements.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat affects input signal stability?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNoise, grounding, and cable quality impact signals. Use shielded cables for better performance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhen should I consider diagnostic variants?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eUse them in critical systems requiring fault detection. They improve maintenance visibility and system uptime.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":45014018883766,"sku":"1794-IB8","price":139.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/1794-IB8_4ac14c6f-75e0-44b4-a8fa-8a1dccca02f2.jpg?v=1777534542"},{"product_id":"1794-ov16-allen-bradley-flex-i-o-16-point-digital-sinking-output-module","title":"1794-OV16 Allen-Bradley FLEX I\/O 16-Point Digital Sinking Output Module","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThe \u003cstrong\u003e\u003cspan style=\"color: #0056b3;\"\u003e1794-OV16\u003c\/span\u003e\u003c\/strong\u003e is a high-density 16-point digital output module.\u003c\/li\u003e\n\u003cli\u003eIt is a key component of the \u003cstrong\u003e\u003cspan style=\"color: #0056b3;\"\u003e\u003ca href=\"https:\/\/www.plcsparehub.com\/collections\/allen-bradley-1794-flex-i-o\"\u003eFLEX I\/O\u003c\/a\u003e 1794\u003c\/span\u003e\u003c\/strong\u003e series for distributed control.\u003c\/li\u003e\n\u003cli\u003eThis \u003cstrong\u003e\u003cspan style=\"color: #0056b3;\"\u003e1794-OV16\u003c\/span\u003e\u003c\/strong\u003e unit utilizes current-sinking logic for 24V DC applications.\u003c\/li\u003e\n\u003cli\u003eFeatures \"Removal and Insertion Under Power\" (RIUP) for maximum system availability.\u003c\/li\u003e\n\u003cli\u003eThe compact \u003cstrong\u003e\u003cspan style=\"color: #0056b3;\"\u003e1794-OV16\u003c\/span\u003e\u003c\/strong\u003e design reduces panel space and simplifies field wiring.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e \u003cstrong\u003e\u003cspan style=\"color: #0056b3;\"\u003eAllen-Bradley\u003c\/span\u003e\u003c\/strong\u003e \/ Rockwell Automation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e \u003cstrong\u003e\u003cspan style=\"color: #0056b3;\"\u003e1794-OV16\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e \u003cstrong\u003e\u003cspan style=\"color: #0056b3;\"\u003eFLEX I\/O 1794\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput Count:\u003c\/strong\u003e 16 Sinking Outputs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNominal Voltage:\u003c\/strong\u003e 24V DC (Range: 10V to 31.2V DC)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCurrent Rating:\u003c\/strong\u003e 500mA per channel; 8.0A total module maximum\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage Drop:\u003c\/strong\u003e Ultra-low 0.2V DC on-state maximum\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLeakage Current:\u003c\/strong\u003e 0.5mA maximum off-state leakage\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSwitching Speed:\u003c\/strong\u003e 0.5ms (Off-to-On) \/ 1.0ms (On-to-Off)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBus Current:\u003c\/strong\u003e 80mA Flexbus current draw\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThermal Load:\u003c\/strong\u003e 14.3 BTU\/hr maximum heat dissipation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e DIN-Rail mounted via compatible terminal base (e.g., 1794-TB3)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eGlobal PLC Spare HUB’s Insight\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThe \u003cstrong\u003e\u003cspan style=\"color: #0056b3;\"\u003e1794-OV16\u003c\/span\u003e\u003c\/strong\u003e is prized for its maintenance-friendly modular architecture.\u003c\/li\u003e\n\u003cli\u003eRIUP functionality ensures that replacing a \u003cstrong\u003e\u003cspan style=\"color: #0056b3;\"\u003e1794-OV16\u003c\/span\u003e\u003c\/strong\u003e does not interrupt other I\/O on the same adapter.\u003c\/li\u003e\n\u003cli\u003eIt provides a very stable 24V output with minimal internal voltage loss.\u003c\/li\u003e\n\u003cli\u003eIdeal for high-vibration industrial environments when used with proper DIN-rail hardware.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eTarget Equipment \u0026amp; Application Scenarios\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eValve Control:\u003c\/strong\u003e Driving 24V DC solenoid banks in pneumatic systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVisual Alerts:\u003c\/strong\u003e Controlling multi-color stack lights and industrial buzzers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRelay Isolation:\u003c\/strong\u003e Interfacing PLC logic with high-power mechanical contractors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProcess Packaging:\u003c\/strong\u003e Discrete output control for fillers, cappers, and labelers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAssembly Lines:\u003c\/strong\u003e Managing sensor-triggered actuators in automotive manufacturing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eDiagnostic \u0026amp; Maintenance Features\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eStatus LEDs:\u003c\/strong\u003e 16 individual yellow LEDs for real-time output signal tracking.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModular Swap:\u003c\/strong\u003e The \u003cstrong\u003e\u003cspan style=\"color: #0056b3;\"\u003e1794-OV16\u003c\/span\u003e\u003c\/strong\u003e detaches from the wiring base without touching field wires.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Diagnostics:\u003c\/strong\u003e Easy troubleshooting of external 24V supply issues via module indicators.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRobust Build:\u003c\/strong\u003e IP20 protection and wide operating temperature range for plant-floor use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eShipping and Purchase Terms\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eExpress Logistics:\u003c\/strong\u003e Worldwide shipping via FedEx, UPS, and DHL Express.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Dispatch:\u003c\/strong\u003e Orders are typically processed and shipped within 24-48 hours.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eService Guarantee:\u003c\/strong\u003e Includes a full \u003cstrong\u003e12-month quality warranty\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage List:\u003c\/strong\u003e One (1) \u003cstrong\u003e\u003cspan style=\"color: #0056b3;\"\u003e1794-OV16\u003c\/span\u003e\u003c\/strong\u003e module; terminal base not included.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions (FAQ)\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDoes the 1794-OV16 provide short-circuit protection?\u003c\/strong\u003e While robust, we recommend adding external fusing to the common supply line to protect against major field wiring shorts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhich terminal bases are compatible with the 1794-OV16?\u003c\/strong\u003e The 1794-TB3 and 1794-TB3S are the primary compatible bases for this 16-point module.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCan I use this module for high-speed pulse output?\u003c\/strong\u003e With a combined delay of 1.5ms, it is suitable for general discrete control but not for high-precision motion synchronization.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhat happens if I exceed the 8.0A module current limit?\u003c\/strong\u003e Exceeding the total current limit causes excessive thermal dissipation, which may trigger a thermal shutdown or damage the module.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelection Guide: Why choose 1794-OV16 over a sourcing module?\u003c\/strong\u003e Choose the \u003cstrong\u003e\u003cspan style=\"color: #0056b3;\"\u003e1794-OV16\u003c\/span\u003e\u003c\/strong\u003e if your field actuators are pre-wired with a common positive (+) rail and require a negative (-) trigger.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":45014022455478,"sku":"1794-OV16","price":174.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/1794-OV16_2866ac32-c391-4a68-a267-33490bb8af29.jpg?v=1777358265"},{"product_id":"1794-ie4xoe2-rockwell-flex-io-high-density-analog-pac-module","title":"1794-IE4XOE2 Rockwell FLEX IO High-Density Analog PAC Module","description":"\u003ch3\u003e\u003cstrong\u003eGlobal PLC Spare HUB's Insight\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003e\u003cspan style=\"color: #ff0000;\"\u003e1794-IE4XOE2\u003c\/span\u003e\u003c\/strong\u003e is a versatile hybrid solution within the \u003cstrong\u003e\u003cspan style=\"color: #ff0000;\"\u003eFLEX I\/O\u003c\/span\u003e\u003c\/strong\u003e ecosystem, specifically engineered to maximize cabinet space by combining input and output functions on a single footprint. This module is a \"Swiss Army Knife\" for engineers managing small-scale analog loops. By providing 4 high-resolution inputs and 2 outputs, the \u003cstrong\u003e\u003cspan style=\"color: #ff0000;\"\u003e1794-IE4XOE2\u003c\/span\u003e\u003c\/strong\u003e eliminates the need for separate modules in localized control clusters. Its non-isolated, single-ended design is optimized for cost-effective, high-density distributed I\/O architectures where common-mode noise is managed at the power supply level.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003e\u003cspan style=\"color: #ff0000;\"\u003eAllen-Bradley 1794-IE4XOE2\u003c\/span\u003e\u003c\/strong\u003e is a high-density analog combination module. It features 4 single-ended inputs and 2 single-ended outputs, supporting both current (mA) and voltage (VDC) signals. This module interfaces with the \u003cstrong\u003e\u003cspan style=\"color: #ff0000;\"\u003eFLEX I\/O\u003c\/span\u003e\u003c\/strong\u003e backplane through a required terminal base, providing a modular and hot-swappable I\/O solution. For technical wiring diagrams and step-response curves, we strongly recommend downloading the \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/1794-IE4XOE2.pdf?v=1774939465\"\u003e\u003cstrong\u003e\u003cspan style=\"color: #ff0000;\"\u003e1794-IE4XOE2\u003c\/span\u003e\u003c\/strong\u003e installation manual\u003c\/a\u003e and user reference guide.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e \u003cstrong\u003e\u003cspan style=\"color: #ff0000;\"\u003eRockwell Automation \/ Allen-Bradley\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCatalog Number:\u003c\/strong\u003e \u003cstrong\u003e\u003cspan style=\"color: #ff0000;\"\u003e1794-IE4XOE2\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModule Series:\u003c\/strong\u003e \u003cstrong\u003e\u003cspan style=\"color: #ff0000;\"\u003eFLEX I\/O\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput Configuration:\u003c\/strong\u003e 4 Single-Ended, Non-Isolated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput Configuration:\u003c\/strong\u003e 2 Single-Ended, Non-Isolated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput Signal Ranges:\u003c\/strong\u003e 0-20mA, 4-20mA, 0-10VDC, +\/- 10VDC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput Signal Ranges:\u003c\/strong\u003e 0-20mA, 4-20mA, 0-10VDC, +\/- 10VDC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eResolution:\u003c\/strong\u003e 12-bit plus sign\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConversion Method:\u003c\/strong\u003e Pulse Width Modulation (PWM) for Outputs; Successive Approximation for Inputs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput Impedance:\u003c\/strong\u003e 100 kOhms (Voltage) \/ 238 Ohms (Current)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExternal Power:\u003c\/strong\u003e 24V DC nominal (19.2 to 31.2V DC range)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Dissipation:\u003c\/strong\u003e 4 Watts maximum at 31.2V DC\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eInstallation and Terminal Bases\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Bases:\u003c\/strong\u003e Must be used with \u003cstrong\u003e\u003cspan style=\"color: #ff0000;\"\u003e1794-TB2\u003c\/span\u003e\u003c\/strong\u003e, \u003cstrong\u003e\u003cspan style=\"color: #ff0000;\"\u003e1794-TB3\u003c\/span\u003e\u003c\/strong\u003e, \u003cstrong\u003e\u003cspan style=\"color: #ff0000;\"\u003e1794-TB3S\u003c\/span\u003e\u003c\/strong\u003e, \u003cstrong\u003e\u003cspan style=\"color: #ff0000;\"\u003e1794-TB3T\u003c\/span\u003e\u003c\/strong\u003e, or \u003cstrong\u003e\u003cspan style=\"color: #ff0000;\"\u003e1794-TB3TS\u003c\/span\u003e\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Horizontal or vertical DIN rail mounting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlexBus Current:\u003c\/strong\u003e Draws 20mA from the backplane.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminal Wiring:\u003c\/strong\u003e Support for solid and stranded copper wire determined by the selected base unit.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eDiagnostic and Application Logic\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eData Format:\u003c\/strong\u003e Converted values are stored in a 16-bit, 2’s complement, left-justified format for direct PLC processing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStatus Indicators:\u003c\/strong\u003e On-board LEDs facilitate quick field verification of power and module health.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNoise Rejection:\u003c\/strong\u003e Integrated normal mode rejection filters (e.g., -10dB @ 50Hz for voltage) to maintain signal integrity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Suitability:\u003c\/strong\u003e Ideal for distributed control of variable frequency drives (VFDs), valve positioners, and pressure transmitters.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eShipping and Warranty Terms\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDispatch Time:\u003c\/strong\u003e Fast processing within 24-48 hours.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLogistics Partners:\u003c\/strong\u003e Global delivery via \u003cstrong\u003eFedEx\u003c\/strong\u003e, \u003cstrong\u003eUPS\u003c\/strong\u003e, or \u003cstrong\u003eDHL\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty Period:\u003c\/strong\u003e Comprehensive 12-month functional guarantee.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Contents:\u003c\/strong\u003e Includes one (1) \u003cstrong\u003e\u003cspan style=\"color: #ff0000;\"\u003e1794-IE4XOE2\u003c\/span\u003e\u003c\/strong\u003e module in professional packaging.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003ePurchase and Selection Guide\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSelect the \u003cstrong\u003e\u003cspan style=\"color: #ff0000;\"\u003e1794-IE4XOE2\u003c\/span\u003e\u003c\/strong\u003e when your application involves single-ended sensors sharing a common ground.\u003c\/li\u003e\n\u003cli\u003eEnsure the total current load on the voltage output does not exceed 3mA.\u003c\/li\u003e\n\u003cli\u003eVerify the conversion rates (256μs per channel) align with your PID loop requirements.\u003c\/li\u003e\n\u003cli\u003eFor high-vibration environments, prioritize the \u003cstrong\u003e\u003cspan style=\"color: #ff0000;\"\u003e1794-TB3S\u003c\/span\u003e\u003c\/strong\u003e spring-clamp terminal base for secure wiring.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions (FAQ)\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the impact of using non-isolated inputs on the 1794-IE4XOE2?\u003c\/strong\u003e\u003cbr\u003eSince inputs are non-isolated, all signals must share a common return. If your sensors have different ground potentials, you may experience ground loops and signal drift.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow does the PWM conversion affect output performance?\u003c\/strong\u003e\u003cbr\u003ePulse Width Modulation provides a reliable analog output but requires proper impedance matching; the voltage output can handle a maximum of 3mA load.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I mix current and voltage signals on the same module?\u003c\/strong\u003e\u003cbr\u003eYes, individual channels are configurable, allowing you to run a 4-20mA pressure transmitter on one input and a +\/-10V position sensor on another.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy is my data shifted to the left in the 16-bit register?\u003c\/strong\u003e\u003cbr\u003eThe \u003cstrong\u003e\u003cspan style=\"color: #ff0000;\"\u003e1794-IE4XOE2\u003c\/span\u003e\u003c\/strong\u003e uses left-justified 16-bit 2's complement format to maintain compatibility across different Logix controllers.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat terminal base is best for high-temperature applications?\u003c\/strong\u003e\u003cbr\u003eThe \u003cstrong\u003e\u003cspan style=\"color: #ff0000;\"\u003e1794-TB3T\u003c\/span\u003e\u003c\/strong\u003e is often selected for its extra terminals, which help with signal grounding and shield termination in complex thermal environments.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":45014041723062,"sku":"1794-IE4XOE2","price":161.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/1794-IE4XOE2_5b71ac72-e85c-477b-89b2-3b606cc43136.jpg?v=1774944718"},{"product_id":"1794-if8ih-allen-bradley-flex-i-o-hart-analog-input-module","title":"1794-IF8IH Allen-Bradley Flex I\/O HART Analog Input Module","description":"\u003ch3\u003e\u003cstrong\u003e\u003cspan style=\"color: #ff0000;\"\u003e1794-IF8IH\u003c\/span\u003e Allen-Bradley Flex I\/O HART Analog Input Module Overview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eAllen-Bradley \u003cspan style=\"color: #ff0000;\"\u003e1794-IF8IH\u003c\/span\u003e\u003c\/strong\u003e is a high-density HART-enabled analog input module designed for the \u003cstrong\u003e\u003cspan style=\"color: #ff0000;\"\u003eFlex I\/O\u003c\/span\u003e\u003c\/strong\u003e platform. This module integrates eight isolated, single-ended channels, providing superior signal integrity by eliminating ground loops in complex industrial environments. Engineered for precision, the \u003cstrong\u003e\u003cspan style=\"color: #ff0000;\"\u003e1794-IF8IH\u003c\/span\u003e\u003c\/strong\u003e utilizes Sigma-Delta conversion technology to deliver high-resolution data acquisition for both unipolar and bipolar signals. It is an essential component for distributed control architectures requiring reliable HART instrument communication.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eTechnical Specification Matrix\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e \u003cstrong\u003eAllen-Bradley\u003c\/strong\u003e \/ \u003cstrong\u003eRockwell Automation\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e \u003cstrong\u003e\u003cspan style=\"color: #ff0000;\"\u003e1794-IF8IH\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e \u003cstrong\u003e\u003cspan style=\"color: #ff0000;\"\u003eFlex I\/O\u003c\/span\u003e 1794\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput Count:\u003c\/strong\u003e 8 Isolated, Single-Ended Channels\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConversion Type:\u003c\/strong\u003e Sigma-Delta (High Precision)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnipolar Resolution:\u003c\/strong\u003e 16 Bits\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBipolar Resolution:\u003c\/strong\u003e 15 Bits + Sign\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExternal DC Voltage:\u003c\/strong\u003e 19.2 to 31.2V DC (Nominal 24V DC)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlexbus Current:\u003c\/strong\u003e 80 mA @ 5V DC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Dissipation:\u003c\/strong\u003e 4.8 Watts maximum @ 31.2V DC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThermal Dissipation:\u003c\/strong\u003e 16.4 BTU\/hr @ 31.2V DC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnvironmental Rating:\u003c\/strong\u003e Open Enclosure; 0°C to 55°C (32°F to 131°F)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 3.7 x 3.7 x 2.6 inches (94 x 94 x 66 mm)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eGlobal PLC Spare HUB’s Insight\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003e\u003cspan style=\"color: #ff0000;\"\u003e1794-IF8IH\u003c\/span\u003e\u003c\/strong\u003e stands out due to its dual-layered isolation—both channel-to-channel and channel-to-backplane. Unlike standard modules, the \u003cstrong\u003e\u003cspan style=\"color: #ff0000;\"\u003e1794-IF8IH\u003c\/span\u003e\u003c\/strong\u003e allows for direct HART asset management, enabling maintenance teams to extract secondary variables and device diagnostics without extra bypass hardware. For engineers migrating from older 1794-IF8 series, this module offers a significant jump in noise rejection and signal precision.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eEquipment Compatibility \u0026amp; Applications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Terminal Bases:\u003c\/strong\u003e \u003cstrong\u003e1794-TB3\u003c\/strong\u003e, \u003cstrong\u003e1794-TB3S\u003c\/strong\u003e (Requires shielded wiring).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eController Integration:\u003c\/strong\u003e ControlLogix, CompactLogix, and PLC-5 via Flex I\/O adapters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHazardous Zones:\u003c\/strong\u003e Approved for North American Hazardous Location standards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTypical Scenarios:\u003c\/strong\u003e Chemical dosing, refinery tank level monitoring, and high-precision pressure loops where ground potential differences are common.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eDiagnostic \u0026amp; Maintenance Capabilities\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eReal-time HART Data:\u003c\/strong\u003e Access device status, manufacturer ID, and tag information directly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSignal Validation:\u003c\/strong\u003e Detects wire-break and out-of-range conditions via the backplane interface.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCalibration:\u003c\/strong\u003e Factory calibrated with support for field-specific offset adjustments when necessary.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWiring Hierarchy:\u003c\/strong\u003e Use Category 2 for signal ports and Category 3 for power supply ports.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eLogistics \u0026amp; Warranty Assurance\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eShipping Speed:\u003c\/strong\u003e Guaranteed dispatch within \u003cstrong\u003e24-48 hours\u003c\/strong\u003e from order confirmation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGlobal Carriers:\u003c\/strong\u003e Express delivery worldwide via \u003cstrong\u003eFedEx\u003c\/strong\u003e, \u003cstrong\u003eUPS\u003c\/strong\u003e, and \u003cstrong\u003eDHL\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty Period:\u003c\/strong\u003e Full \u003cstrong\u003e12-month professional warranty\u003c\/strong\u003e on all industrial hardware.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Contents:\u003c\/strong\u003e One \u003cstrong\u003eAllen-Bradley \u003cspan style=\"color: #ff0000;\"\u003e1794-IF8IH\u003c\/span\u003e\u003c\/strong\u003e module in secure ESD packaging.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eBuyer Selection Guide\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eEnsure your terminal base supports 3-wire or 2-wire shielding to prevent HART signal interference.\u003c\/li\u003e\n\u003cli\u003eCalculate the thermal load if mounting multiple \u003cstrong\u003e\u003cspan style=\"color: #ff0000;\"\u003e1794-IF8IH\u003c\/span\u003e\u003c\/strong\u003e modules in a single non-ventilated cabinet.\u003c\/li\u003e\n\u003cli\u003eVerify that your Flex I\/O Adapter (e.g., 1794-AENTR) firmware version supports HART pass-through data.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eExpert FAQ\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the primary advantage of Sigma-Delta conversion in the \u003cspan style=\"color: #ff0000;\"\u003e1794-IF8IH\u003c\/span\u003e?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSigma-Delta technology provides high-resolution oversampling, which significantly reduces electronic noise and improves the linearity of analog-to-digital conversion compared to older methods.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this module require a specific type of cable for HART communication?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes, we strongly recommend using individual shielded twisted-pair cables. This prevents crosstalk between the high-frequency HART digital carriers on adjacent channels.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan the \u003cspan style=\"color: #ff0000;\"\u003e1794-IF8IH\u003c\/span\u003e operate without an external DC power supply?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo, the module requires a dedicated 24V DC (19.2-31.2V) external source to power the analog circuitry and HART modems independently of the Flexbus.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow does the isolation feature benefit a hazardous area installation?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIsolation prevents fault currents in one area from propagating to the controller, which is critical for maintaining safety integrity in Class I Div 2 environments.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I mix HART and non-HART devices on the same \u003cspan style=\"color: #ff0000;\"\u003e1794-IF8IH\u003c\/span\u003e module?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes, each channel is independent. Non-HART 4-20mA devices will function as standard analog inputs, while HART-enabled devices will provide additional data layers.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":45014041755830,"sku":"1794-IF8IH","price":162.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/1794-IF8IH_8994e77e-7e14-4d95-8515-22f99c5d841d.jpg?v=1776755718"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/collections\/Allen-Bradley_1794_Flex_IO__1.webp?v=1774323586","url":"https:\/\/www.plcsparehub.com\/collections\/allen-bradley-1794-flex-i-o.oembed","provider":"Global PLC Spare Hub","version":"1.0","type":"link"}