{"product_id":"allen-bradley-1794-ib16-a-flex-i-o-digital-dc-input-module","title":"Allen-Bradley 1794-IB16\/A FLEX I\/O Digital DC Input Module","description":"\u003ch2\u003eAllen-Bradley 1794-IB16\/A FLEX I\/O Digital DC Input Module\u003c\/h2\u003e\n\u003cp\u003eConfigured for 24 VDC field signal acquisition in the FLEX I\/O network, the \u003cstrong\u003eAllen-Bradley 1794-IB16\/A\u003c\/strong\u003e (\u003cstrong\u003e1794-IB16\u003c\/strong\u003e Digital DC Input Module) provides direct electrical interface between sink\/source input devices and Allen-Bradley PLC systems through FLEX I\/O adapter modules.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e1794-IB16\/A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eAllen-Bradley \/ Rockwell Automation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eUnited States\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e46 x 94 x 53 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 deg C to +55 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e30 mA @ 5 VDC Flexbus current; max. 6.1 W @ 31.2 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Type\u003c\/td\u003e\n\u003ctd\u003eDigital DC Input Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries\u003c\/td\u003e\n\u003ctd\u003eFLEX I\/O Series\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Inputs\u003c\/td\u003e\n\u003ctd\u003e16 points, non-isolated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Type\u003c\/td\u003e\n\u003ctd\u003eCurrent sinking, compatible with 24 VDC source input devices\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal Voltage\u003c\/td\u003e\n\u003ctd\u003e24 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage Range\u003c\/td\u003e\n\u003ctd\u003e10 VDC to 31.2 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOn-State Voltage\u003c\/td\u003e\n\u003ctd\u003e10 VDC minimum to 31.2 VDC maximum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOff-State Voltage\u003c\/td\u003e\n\u003ctd\u003e5 VDC maximum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOn-State Current\u003c\/td\u003e\n\u003ctd\u003e2.0 mA minimum @ 10 VDC; 8.2 mA nominal @ 24 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOff-State Current\u003c\/td\u003e\n\u003ctd\u003e1.5 mA maximum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Impedance\u003c\/td\u003e\n\u003ctd\u003e4.6 kohm nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Delay Time\u003c\/td\u003e\n\u003ctd\u003e0.5 ms to 16 ms selectable hardware delay; 0.5 ms default\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStatus Indicators\u003c\/td\u003e\n\u003ctd\u003e16 yellow channel status LEDs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Terminal Bases\u003c\/td\u003e\n\u003ctd\u003e1794-TB3, 1794-TB3S, 1794-TBN, 1794-TB32, 1794-TB3G, 1794-TB3GS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage Temperature\u003c\/td\u003e\n\u003ctd\u003e-40 deg C to +85 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRelative Humidity\u003c\/td\u003e\n\u003ctd\u003e5% to 95% non-condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVibration \/ Shock\u003c\/td\u003e\n\u003ctd\u003e5 g @ 10 to 500 Hz \/ 30 g operating shock\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eEtherNet\/IP and FLEX I\/O Backplane Interface Characteristics\u003c\/h3\u003e\n\u003cp\u003eThe 1794-IB16\/A operates as a distributed FLEX I\/O input node connected through FLEX I\/O adapter modules including 1794-AENT, 1794-APB, and 1794-ASB. The module transfers channel state information through the FLEX I\/O backplane interface while maintaining compact I\/O density for distributed control cabinets.\u003c\/p\u003e\n\u003cp\u003eThe FLEX I\/O architecture supports I\/O density scaling by allowing multiple field interface modules to be installed on terminal base units without individual field wiring removal during module replacement. The module uses channel-level LED indication for direct verification of input device states during commissioning and maintenance.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Can the 1794-IB16\/A be removed while the FLEX I\/O system remains powered?\u003cbr\u003eA: The module supports removal and insertion under power (RIUP) when used with compatible FLEX I\/O terminal bases. Field wiring remains connected through the terminal base during module replacement.\u003c\/p\u003e\n\u003cp\u003eQ: What type of field devices can connect to the input channels?\u003cbr\u003eA: The module accepts 24 VDC digital signals from sink input circuits compatible with devices such as limit switches, photoelectric sensors, proximity switches, and pushbuttons.\u003c\/p\u003e\n\u003cp\u003eQ: What affects input response time on this module?\u003cbr\u003eA: Input response is determined by the selectable hardware input delay setting, configurable from 0.5 ms to 16 ms.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eInstall the 1794-IB16\/A on the specified FLEX I\/O terminal base unit and verify correct mechanical engagement before applying field power. Confirm that the terminal base wiring matches the required input polarity and device type.\u003c\/p\u003e\n\u003cp\u003eRoute digital input wiring separately from high-current motor conductors and switching power circuits to reduce electrical interference. Use appropriate cable shielding practices where signal noise conditions require additional protection. Connect shields according to the cabinet grounding standard and avoid creating unintended ground loops.\u003c\/p\u003e\n\u003cp\u003eVerify adapter communication status, module seating, channel LED indication, and input device operation during commissioning. Confirm that firmware compatibility between the FLEX I\/O adapter and controller platform matches the installed system configuration.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":43768254693466,"sku":"1794-IB16\/A","price":123.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0612\/4601\/3530\/files\/1794-IB161.jpg?v=1785481947","url":"https:\/\/www.plcmasters.com\/products\/allen-bradley-1794-ib16-a-flex-i-o-digital-dc-input-module","provider":"PLC Masters Ltd.","version":"1.0","type":"link"}