PRODUCT INFORMATION
Product Overview
The Allen-Bradley 1794-IA16 FLEX I/O Digital Input Module interfaces alternating current field sensors with industrial controllers. This unit provides sixteen non-isolated 120V AC input channels in a modular DIN rail form factor. Each channel monitors digital devices such as pushbuttons, limit switches, and selector switches. Sixteen yellow front-panel LED indicators display the active energization state for each input channel.
The module requires a separate terminal base unit to complete field wiring and system grounding. Flexbus communication draws 20 mA at 5V DC directly from the active network adapter backplane. Operating AC voltage spans from 74V AC to 132V AC with nominal 120V AC operation. Maximum power dissipation is 6.4 Watts at 132V AC, generating 21.8 BTU per hour thermal dissipation.
TECHNICAL DATA
Technical Specifications
| Parameter | Specification |
|---|
| Product Line | Flex I/O 1794 |
|---|
| GTIN | 10612598179913 |
|---|
| Weight | 0.56 lbs (0.26 kg) |
|---|
| Product Description | AC Input Module |
|---|
| Number of Inputs | 16, non-isolated |
|---|
| Terminal base | 1794-TB3, 1794-TB3S ,1794-TBN, 1794-TB3K, 1794-TB3SK and 1794-TBNK |
|---|
| Keyswitch Position | 8 |
|---|
| ON state Voltage, min | 74VAC |
|---|
| ON state Voltage, max. | 132VAC |
|---|
| OFF state Voltage, max | 20VAC |
|---|
| Indicators | 16 Yellow status indicators |
|---|
| Mounting | DIN Rail |
|---|
| Wire Size | Determined by installed terminal base |
|---|
| Enclosure type rating | None (open-style) |
|---|
| Operating Temperature | 0 to 55 C (32 to 131 F) |
|---|
| Storage Temperature | -40 to 85 C (-40 to 185 F) |
|---|
| Vibration | 5g @ 10 to 500 Hz |
|---|
| Operating Shock | 30 g |
|---|
| Inputs | 16 Nonisolated |
|---|
| On-state Current min. | 5.49 mA |
|---|
| On-state Current max. | 14.8 1mA |
|---|
| 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. |
|---|
| UPC | 10612598179913 |
|---|
| UNSPSC | 32151602 |
|---|
TECHNICAL INFORMATION
Features
- Provides sixteen non-isolated 120V AC digital input channels.
- Includes sixteen yellow LED indicators for channel status monitoring.
- Operates across an AC voltage range of 74V AC to 132V AC.
- Draws 20 mA of current from the 5V DC Flexbus backplane.
- Dissipates a maximum of 6.4 Watts of power at 132V AC.
- Mounts onto standard DIN rail assemblies via compatible terminal bases.
TECHNICAL INFORMATION
Applications
- Interface 120V AC pushbuttons, selector switches, and limit switches.
- Acquire discrete status signals from motor control centers and contactors.
- Integrate distributed discrete AC sensing points into ControlNet or EtherNet/IP networks.
TECHNICAL INFORMATION
Connections / Interfaces
- Terminal connection points are established through the separate FLEX I/O terminal base.
- Compatible terminal bases include 1794-TB3, 1794-TB3S, 1794-TBN, 1794-TB3K, 1794-TB3SK, and 1794-TBNK.
- Power wiring can be daisy-chained across adjacent terminal bases to simplify field distribution.
TECHNICAL INFORMATION
Installation Guidelines
- Install the selected terminal base onto a 35 mm DIN rail assembly.
- Rotate the module keyswitch to position 8 before inserting the module into the base.
- Press the module firmly into the base until the latching mechanism engages securely.
TECHNICAL INFORMATION
Configuration Guidelines
- Configure module parameters in the controller programming software according to network adapter documentation.
- Verify off-state and on-state voltage thresholds match the connected AC signaling equipment.
TECHNICAL INFORMATION
Compatibility
- Compatible with 1794-ACN, 1794-ACNR, and 1794-ACNR15 ControlNet communication adapters.
- Operates with 1794-AENT and 1794-AENTR EtherNet/IP communication adapters.
- Integrates with 1794-ASB Remote I/O adapters.
- Requires terminal bases 1794-TB3, 1794-TB3S, 1794-TBN, 1794-TB3K, 1794-TB3SK, or 1794-TBNK.
TECHNICAL RESOURCES
Documentation
COMPATIBILITY
Compatibility & Replacement
COMPATIBLE MODELSCompatible with 1794-ACN, 1794-ACNR, and 1794-ACNR15 ControlNet communication adapters. Operates with 1794-AENT and 1794-AENTR EtherNet/IP communication adapters. Integrates with 1794-ASB Remote I/O adapters. Requires terminal bases 1794-TB3, 1794-TB3S, 1794-TBN, 1794-TB3K, 1794-TB3SK, or 1794-TBNK.
Verify compatibility against the exact Part Number, revision and manufacturer documentation before ordering.
PART VERIFICATION
Before You Order
Industrial automation parts can share similar model names, suffixes and revisions. Confirm the complete manufacturer Part Number before purchase.
01Check Part NumberMatch the complete ordering code on the existing unit.
02Confirm RevisionCheck suffix, hardware or firmware when applicable.
03Send a Label PhotoWe can review a clear label photo when identification is uncertain.
ORDERING PROCESS
From RFQ to Dispatch
1Submit Part Number2Verify Product Identity3Confirm Stock & Condition4Issue Quotation5Dispatch & Tracking
PRODUCT FAQ
Frequently Asked Questions
What is the operating voltage range for the Allen-Bradley 1794-IA16?
The 1794-IA16 operates with a nominal 120V AC voltage and an on-state range of 74V AC to 132V AC.
Which terminal bases are compatible with the 1794-IA16 module?
The module requires terminal base units 1794-TB3, 1794-TB3S, 1794-TBN, 1794-TB3K, 1794-TB3SK, or 1794-TBNK.
What keyswitch setting is required for the 1794-IA16?
Set the terminal base keyswitch to position 8 prior to module insertion.
What is the reference price for the 1794-IA16?
Observed market reference pricing is approximately $135 USD for refurbished units. These figures are indicative market reference pricing only and are not a final quotation.
