Rated 5 with 6 reviews


Revisions: Ser A


The Allen-Bradley 1794-IA16 Flex I/O AC Digital Input Module has 16 Nonisolated Inputs, a 74V AC On-state Voltage min., and a 132V AC On-state Voltage max.. It also operates with a 14.81mA On-state Current max. and a 20V AC Off-state Voltage max..

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About 1794-IA16

The Allen-Bradley 1794-IA16 is a FLEX Digital AC I/O module. It has 16 input points available, all of which are non-isolated. This module comes with 16 yellow status indicators (field side indication) and it is mounted using a DIN rail or panel mount. Communication modes available with the module are ControlNet, EtherNet/IP, DeviceNet, and Profibus DP. It also has 8 key switch positions. Compatible FLEX I/O terminal base units for the 1794-IA16 module are the 1794-TB3S, 1794-TBN, and the 1794-TB3. The 1794-TB3 is the most recommended. It measures 3.7 x 2.7 x 3.7 inches and it has an open-type enclosure. This module has a nominal on-state input voltage of 120 Volts AC, a maximum off-state voltage of 20 Volts AC, a minimum on-state input voltage of 74 Volts AC, and a maximum on-state input voltage of 132 Volts AC.

It also has a minimum off-state input current of 2.9 mA, a minimum on-state current of 5.49 mA, a maximum on-state current of 14.81 mA, and a nominal input current of 12 mA at 120 Volts AC. Its external nominal AC power supply voltage is 120 Volts AC and its external AC power voltage range is 74 to 132 Volts AC. The FlexBus current of this module is 20 mA. The thermal dissipation of the 1794-IA16 module is a maximum of 21.8 BTU/hour at 132 Volts AC, while its power dissipation is 6.4 W also at 132 Volts AC. The module has been type-tested between field side and system at 1,264 Volts AC for 60 seconds and its continuous isolation voltage is 120 Volts. It has an operating temperature of 32 to 131 degrees Fahrenheit and a storage temperature of -40 to 185 degrees Fahrenheit, with a non-condensing relative humidity of 5 to 95%. Its operating vibration is 5 G at 10 to 500 Hertz, its non-operating shock is 50g, and its operating shock is 30 G.

Technical specifications:

Manufacturer:Rockwell Automation
Part Number/Catalog No.:1794-IA16
Product Type:Flex I/O AC Digital Input Module
Inputs:16 Nonisolated
On-state Voltage min.:74 Volts AC
On-state Voltage max.:132 Volts AC
On-state Current min.:5.49 mA
On-state Current max.:14.8 1mA
Off-state Voltage max.:20 Volts AC
Off-state Current min.:2.9 mA
Nominal Input Current:12 mA at 120 Volts AC
Flexbus Current:20 mA
Power Dissipation:6.4 Watts at 132 Volts AC max.


Question: Which terminal bases is the 1794-IA16 compatible with?

Answer: The 1794-IA16 is compatible with these terminal bases: 1794-TB3, 1794-TB3S, 1794-TBN, 1794-TB3K, 1794-TB3SK, and 1794-TBNK.


Question: Can this module be purchased with a warranty?

Answer: Yes, the 1794-IA16 comes with a free one-year warranty from DO Supply, Inc.


Question: Where can I send the 1794-IA16 to be repaired?

Answer: DO Supply, Inc. offers a variety of repair services for the 1794-IA16.


Question: What are the dimensions of the 1794-IA16?

Answer: The dimensions of the 794-IA16 are 46 x 94 x 53 millimeters (1.8 x 3.7 x 2.1 inches) or 94 x 94 x 69 milimeters (3.7 x 3.7 x 2.7 inches) installed. 

Type Lead Time Price Action
Repair Service 2-4 weeks $190.08Add to Cart

Our highly skilled technicians can repair your 1794-IA16. All of our repairs come with a 1 Year DO Supply Warranty. Please contact us for additional information about our repair process.

Please refer to the manual for more information about the 1794-IA16 such as the wiring diagrams, data sheets, firmware information and migration or obsolescence details.

Revision Part # Also Known as Availability
1794-IA16 Ser A
1794-IA16/A, Series A, Rev A Request Quote

Common misspellings: 1794IA16