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        1794-IA16

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        Allen-Bradley 1794-IA16 is a FLEX I/O 16-point nonisolated 120 VAC input module with configurable filtering for AC field signals.
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        Ships by Wednesday, October 28
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        Warranty Policy
        We provide 1 year warranty for all remaining parts.
        The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
        Return Notice
        The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
        In the event of a defect, we will send new equipment, repair equipment or refund the purchase price based on our availability. You must contact us to obtain a return authorization and return the defective device to us within 14 days of reporting the defect.
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        Various transportation options are available in each country. Shipping methods and fees are clearly indicated on all quotations.Various transportation options are available in each country. Shipping methods and fees are clearly indicated on all quotations.
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        Apter Power offers a wide range of components, products and services related to industrial automation. We also supply new products from a variety of quality manufacturers.
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        Technical specifications for 1794-IA16

        • Manufacturer:
          Allen-Bradley
        • Part Number:
          1794-IA16
        • Product Family:
          Flex I/O
        • Product Type:
          FLEX I/O 16-Point 120 VAC Input Module
        • Stock:
          1
        • Number of Inputs:
          16 nonisolated AC inputs
        • Nominal Input Voltage:
          120V AC
        • Input Voltage Range:
          74–132V AC
        • Terminal Bases:
          1794-TB3, TB3S, TBN and K variants
        • Input Filter:
          Two configurable channel groups
        • Operating Temperature:
          0 to 55°C
        • Weight:
          0.1 kg
        • Estimated shipping dimensions:
          9.4x9.4x6.9cm
        • Tariff Code:
          8537101190
        • Country of origin:
          Malaysia
        • Place of shipment:
          Xiamen,Fujian,China
        By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

        More Information

        Overview Manuals Signal Boundary Filter Groups Open-Style Panel Product Applications

        Features:

        • Sixteen nonisolated inputs for 120 VAC field signals
        • Two software-selected filter groups within one input word
        • AC-specific terminal distribution and module keying
        1794-IA16 belongs in an AC input design, not as a mechanical replacement for a DC sensing catalog.

        The most useful recognition cues are its nonisolated AC signal role, grouped response control, and AC-specific terminal arrangement.

        Signal behavior, filter configuration, and completed-panel protection remain separate acceptance topics so one issue does not hide another.
        Apter Power can coordinate official-document review, quotation, and sourcing support for 1794-IA16.
        1794-IA16 FLEX I/O 16-Point 120 VAC Input Module Manuals, Datasheets, Links Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
        • Input class: The module is designed for the documented 120 VAC operating range rather than DC field power.
        • Channel relationship: Inputs are nonisolated from one another even though field-to-system isolation is specified.
        • Sensor leakage: AC proximity devices must remain within the official leakage and on-current conditions.
        • Main group: Channels 0 through 11 share one filter selection in the complementary word.
        • Final group: Channels 12 through 15 can use a different documented response setting.
        • Startup control: The controller must write the intended values rather than assume independent channel timing.
        • Mechanical keying: The terminal base must be set to the AC-input keyswitch position before insertion.
        • Enclosure duty: The open-style module relies on the completed panel for environmental and hazardous-location protection.
        • Grounding path: The documented steel DIN rail and de-energized base-work rules support a safe installation.
        • AC contact monitoring: Acquire discrete 120 VAC states from field switches and approved devices.
        • Distributed AC inputs: Place a sixteen-point sensing group within a FLEX I/O machine panel.
        • Grouped debounce: Apply separate response treatment to the main channels and the final four inputs where field behavior differs.
        Description
        For FLEX I/O stations built around AC field devices, 1794-IA16 is the Allen-Bradley input catalog for bringing line-voltage discrete states into the distributed I/O system. Its AC identity separates the module from mechanically related DC sensing products before the base or project is selected.

        In operation, 1794-IA16 lets the controller supervise field contacts whose electrical behavior differs from low-voltage DC sensors. That system role makes signal boundaries and shared exposure part of the engineering context, not just entries in a parameter table.

        A sound installation record should connect 1794-IA16 with the actual field-device and panel design. The exact terminal distribution, response grouping, and enclosure duties can then be reviewed as independent decisions without treating a matching form factor as proof of suitability.
        Alternative Names
        Allen-Bradley FLEX I/O IA16 Rockwell 1794 IA16 AC Input Module FLEX I/O 16-Point 120 VAC Input
        Technical notes
        When 1794-IA16 is installed on a 1794-TBN base, an external terminal strip is required to distribute 120 VAC L1 to the field devices. Do not assume the base provides every supply point; complete the L1/L2 drawing, fit the auxiliary distribution, and stop energization until every channel feed is traceable.
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        FAQS

        The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
        VIEW ALL FAQS
        Can 1794-IA16 replace a 24 VDC input module if the terminal base looks similar?
        No. Stop the substitution and compare the field devices, AC L1/L2 distribution, terminal base, keyswitch, and controller design. Rebuild the circuit for the documented 120 VAC input class before installing this catalog.
        Why might only channels 12 through 15 on 1794-IA16 respond more slowly after a project change?
        Read the complementary-word value assigned to the final four channels and compare it with the setting for channels 0 through 11. Restore the intended group value and verify response with the actual field device.
        During a safety review, why should 1794-IA16 channels not be treated as individually isolated circuits?
        The specification describes nonisolated inputs with field-to-system isolation. Keep the shared AC distribution and common exposure in the drawing, fault study, and maintenance procedure instead of assigning independent isolation barriers.
        What should an installer do if the planned 1794-TBN base has no complete L1 distribution for 1794-IA16?
        Do not energize the inputs. Add the external terminal strip required by the instructions, trace each L1 feed and the L2 common, and update the panel drawing before commissioning.
        Can a two-wire AC proximity switch be accepted for 1794-IA16 without checking leakage current?
        No. Compare the device leakage and minimum on-current with the official AC-input conditions, then test the off state under the installed wiring. Reject the pairing if residual current can hold the channel on.
        When should commissioning of 1794-IA16 stop in an unfinished panel?
        Stop if the open-style station lacks its final enclosure, the DIN rail is not properly grounded, or backplane or field power is still present during base work. Correct the panel conditions before inserting or wiring the module.

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