{"product_id":"1794-ib16-rockwell-automation-16-channel-dc-input-unit","title":"1794-IB16 Rockwell Automation 16-Channel DC Input Unit","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eGlobal PLC Spare HUB's Insight: Global PLC Spare HUB supplies robust industrial automation components engineered for distributed control architectures. The \u003cb style=\"color: #0056b3;\"\u003e1794-IB16\u003c\/b\u003e belongs to the \u003cb style=\"color: #0056b3;\"\u003eFlex IO\u003c\/b\u003e series by \u003cb style=\"color: #0056b3;\"\u003eRockwell Automation\u003c\/b\u003e. Plant technicians deploy this 16-channel discrete input module close to field sensors to streamline cabinet wiring, minimize signal degradation, and maximize system throughput across complex manufacturing cells.\u003c\/p\u003e\n\u003ch3\u003eTechnical Architecture \u0026amp; Specifications\u003c\/h3\u003e\n\u003ctable style=\"width: 100.061%; height: 352.841px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.6023px;\"\u003e\n\u003ctd style=\"width: 28.5841%; height: 19.6023px;\"\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 68.6968%; height: 19.6023px;\"\u003e\u003cb style=\"color: #0056b3;\"\u003eAllen-Bradley\u003c\/b\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2045px;\"\u003e\n\u003ctd style=\"width: 28.5841%; height: 39.2045px;\"\u003e\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 68.6968%; height: 39.2045px;\"\u003e\u003cb style=\"color: #0056b3;\"\u003e1794-IB16\u003c\/b\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6023px;\"\u003e\n\u003ctd style=\"width: 28.5841%; height: 19.6023px;\"\u003e\u003cstrong\u003eProduct Series \u0026amp; Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 68.6968%; height: 19.6023px;\"\u003e\n\u003cb style=\"color: #0056b3;\"\u003eFlex IO\u003c\/b\u003e 16-Channel 24VDC Sinking Discrete Input Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2045px;\"\u003e\n\u003ctd style=\"width: 28.5841%; height: 39.2045px;\"\u003e\u003cstrong\u003eInput Channels\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 68.6968%; height: 39.2045px;\"\u003e16 single-ended, non-isolated sinking inputs grouped in a single bank\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2045px;\"\u003e\n\u003ctd style=\"width: 28.5841%; height: 39.2045px;\"\u003e\u003cstrong\u003eVoltage Ratings\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 68.6968%; height: 39.2045px;\"\u003e24VDC nominal operating voltage, 19.2 to 31.2VDC operating range\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2045px;\"\u003e\n\u003ctd style=\"width: 28.5841%; height: 39.2045px;\"\u003e\u003cstrong\u003eCurrent Thresholds\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 68.6968%; height: 39.2045px;\"\u003e2.0mA minimum ON-state current, 8.0mA nominal, 1.5mA maximum OFF-state current\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2045px;\"\u003e\n\u003ctd style=\"width: 28.5841%; height: 39.2045px;\"\u003e\u003cstrong\u003eSelectable Filter Times\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 68.6968%; height: 39.2045px;\"\u003eConfigurable from 256 microseconds up to 32 milliseconds via output image table\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2045px;\"\u003e\n\u003ctd style=\"width: 28.5841%; height: 39.2045px;\"\u003e\u003cstrong\u003ePower \u0026amp; Thermal Dissipation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 68.6968%; height: 39.2045px;\"\u003eMaximum 6.1W power loss; maximum 20.8 BTU\/hr thermal output at 31.2VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2045px;\"\u003e\n\u003ctd style=\"width: 28.5841%; height: 39.2045px;\"\u003e\u003cstrong\u003eEnvironmental Ratings\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 68.6968%; height: 39.2045px;\"\u003eOperating temperature range from 0 to 55°C; 5% to 95% non-condensing humidity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2045px;\"\u003e\n\u003ctd style=\"width: 28.5841%; height: 39.2045px;\"\u003e\u003cstrong\u003eHazardous Certifications\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 68.6968%; height: 39.2045px;\"\u003eClass I Division 2, Class I Zone 2, UL, CSA, and CE compliant directives\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eInstallation Blueprint\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMount the module onto standard DIN rails or directly onto flat backplanes using approved hardware.\u003c\/li\u003e\n\u003cli\u003eSeat the unit firmly onto compatible terminal bases including 1794-TB3, 1794-TB3S, 1794-TB3K, 1794-TB3SK, 1794-TBKD, or 1794-TB37DS.\u003c\/li\u003e\n\u003cli\u003eVerify that keyswitch position 2 aligns properly with the base plate before locking the assembly into place.\u003c\/li\u003e\n\u003cli\u003eTerminate field sensor wires up to 12 AWG (4 square millimeters) into the designated terminal blocks.\u003c\/li\u003e\n\u003cli\u003eAttach a compatible communication adapter such as DeviceNet, ControlNet, EtherNet\/IP, or Universal Remote I\/O to the network rail.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCommissioning \u0026amp; Maintenance Guidelines\u003c\/h3\u003e\n\u003cp\u003eThe module features 16 individual yellow status indicators on the field side to confirm immediate device-driven signal states. Commissioning engineers can program custom input filter times from 256 microseconds to 32 milliseconds to suppress electrical noise in high-interference environments. Flexbus current draw remains minimal at 30mA from the 5VDC backplane supply.\u003c\/p\u003e\n\u003ch3\u003eCompatibility Framework\u003c\/h3\u003e\n\u003cp\u003eThis hardware interfaces seamlessly with any standard 1794 Flex IO communication adapter (1794-AENT, 1794-ADN, 1794-ASB, 1794-APB, 1794-ACN). It requires compatible terminal bases to route field power and discrete sensor signals safely without modifying backplane architectures.\u003c\/p\u003e\n\u003ch3\u003eCertification Matrix\u003c\/h3\u003e\n\u003cp\u003eBuilt for harsh industrial deployments, the module carries global safety listings including UL, CE, CSA, and hazardous location ratings for Class I Division 2 (Groups A, B, C, D) and Class I Zone 2 (Group IIC) atmospheres.\u003c\/p\u003e\n\u003ch3\u003ePackage Contents \u0026amp; Warranty\u003c\/h3\u003e\n\u003cp\u003eEvery purchase includes one factory-sealed \u003cb style=\"color: #0056b3;\"\u003e1794-IB16\u003c\/b\u003e discrete input module. Global PLC Spare HUB backs every unit with a reliable 12-month operational warranty.\u003c\/p\u003e\n\u003ch3\u003eLogistics \u0026amp; Shipping\u003c\/h3\u003e\n\u003cp\u003eGlobal PLC Spare HUB processes and dispatches orders within 24 to 48 hours. Expedited worldwide shipping is handled securely through trusted courier networks including FedEx, UPS, and DHL.\u003c\/p\u003e\n\u003ch3\u003eIndustrial Application Scenarios \u0026amp; Diagnostics\u003c\/h3\u003e\n\u003cp\u003eAutomation engineers deploy the \u003cb style=\"color: #0056b3;\"\u003e1794-IB16\u003c\/b\u003e across distributed manufacturing lines, automated material handling systems, wastewater treatment plants, and petrochemical skids. Diagnostic capabilities leverage front-panel LED mapping to isolate faulty field switches, wire breaks, or power supply sags instantly, reducing mean time to repair (MTTR) across continuous processes.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use this module with dry contact mechanical switches?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes, provided the external circuit supplies the necessary 24VDC wetting voltage and meets the minimum 2.0mA ON-state current threshold required by the sinking inputs.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy do my input signals fluctuate when machinery starts up nearby?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eHigh electrical noise from variable frequency drives can trigger false states. Increase the software-configurable input filter time from 256 microseconds up to 32 milliseconds to smooth out transient noise spikes.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat happens if the internal Flexbus supply drops below 5VDC?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA dropping backplane voltage can cause communication dropouts between the adapter and the input module. Verify power supply capacity on your rack's power distribution module.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I select the correct terminal base for my cabinet layout?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eChoose screw-clamp bases like the 1794-TB3 for standard industrial wiring or spring-clamp versions like the 1794-TB3S if your facility mandates tool-less push-in wire termination to combat high vibration.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs it necessary to use shielded cables for digital field inputs?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWhile unshielded Category 2 wiring is acceptable for standard runs, routing inputs through Category 2 shielded triad cables helps maintain noise immunity in high-EMI environments.\u003c\/p\u003e\n\u003ch3\u003eBuying Guide\u003c\/h3\u003e\n\u003cp\u003eWhen selecting distributed I\/O modules, evaluate your controller network topology, local environmental constraints, and field device voltage requirements. Procuring exact factory items like the \u003cb style=\"color: #0056b3;\"\u003e1794-IB16\u003c\/b\u003e guarantees full software compatibility within Studio 5000 or RSLogix environments while eliminating costly cabinet redesigns.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/1794-IB16.png?v=1784615554\" alt=\"\"\u003e\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":45013983985846,"sku":"1794-IB16","price":133.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/1794-IB16_345fe9f7-95e5-431f-9893-a93d18fd12d2.jpg?v=1784616764","url":"https:\/\/www.plcsparehub.com\/products\/1794-ib16-rockwell-automation-16-channel-dc-input-unit","provider":"Global PLC Spare Hub","version":"1.0","type":"link"}