PRODUCT INFORMATION
Product Overview
The Allen-Bradley 1794-IA8 is a FLEX I/O Digital Input Module. It features eight non-isolated AC inputs. The module converts external AC signals to appropriate internal logic levels for the processor. It includes eight yellow status indicators for input monitoring. Compatible communication networks include DeviceNet, ControlNet, Profibus DP, and EtherNet/IP.
The module operates across an input voltage range of 85 to 132 Volts AC. Nominal input current is 12 mA at 120 Volts AC and 60 Hertz. FlexBus backplane current draw is 30 mA at 5 Volts DC. It dissipates a maximum of 4.5 Watts of power at 132 Volts AC. The unit mounts on a DIN rail or directly to a panel. It accepts 22 to 12 AWG stranded copper field wiring.
TECHNICAL DATA
Technical Specifications
| Parameter | Specification |
|---|
| Product Line | Flex I/O 1794 |
|---|
| UPC | 612598137763 |
|---|
| Weight | 0.06 lbs (0.03 kg) |
|---|
| Inputs | 8 Non-Isolated |
|---|
| On-state Voltage min. | 65V AC |
|---|
| On-state Voltage max. | 132V AC |
|---|
| On-state Current min. | 7.1mA |
|---|
| On-state Current max. | 14.32mA |
|---|
| Off-state Voltage max. | 43V AC |
|---|
| Off-state Current min. | 2.9mA |
|---|
| Nominal Input Current | 12 mA @ 120V AC |
|---|
| Flexbus Current | 30mA @ 5V DC |
|---|
| Power Dissipation | 4.5W @ 132V AC max. |
|---|
TECHNICAL INFORMATION
Features
- Provides eight non-isolated 120V AC digital input channels.
- Features eight yellow status indicator lights on the front housing.
- Operates across an AC line frequency range of 47 to 63 Hertz.
- Provides 2150 Volts DC isolation between system logic and user inputs.
- Configures default input filter delays of 8.4 milliseconds off-to-on and 26.4 milliseconds on-to-off.
- Operates within an ambient temperature range of -20 to 55 degrees Celsius.
TECHNICAL INFORMATION
Connections / Interfaces
- Connects to the FLEX I/O backplane via compatible terminal base units.
- Accepts 22 to 12 AWG stranded copper field wiring.
TECHNICAL INFORMATION
Installation Guidelines
- Mount the module onto a compatible 1794 terminal base unit.
- Terminal base assemblies provide eight key switch positions.
- Secure the assembled base and module onto a DIN rail or flat panel surface.
- Connect field wiring using 22 to 12 AWG stranded copper conductors.
TECHNICAL INFORMATION
Configuration Guidelines
- Default filter times are 8.4 milliseconds off-to-on and 26.4 milliseconds on-to-off.
- Verify that input signals fall within the operating range of 85 to 132 Volts AC.
TECHNICAL INFORMATION
Compatibility
- Compatible with terminal base units 1794-TB2, 1794-TB3, 1794-TB3S, 1794-TB3K, 1794-TB3SK, 1794-TBKD, 1794-TBN, and 1794-TBNK.
- Operates with FLEX I/O communication adapters across DeviceNet, ControlNet, Profibus DP, and EtherNet/IP networks.
TECHNICAL RESOURCES
Documentation
COMPATIBILITY
Compatibility & Replacement
COMPATIBLE MODELSCompatible with terminal base units 1794-TB2, 1794-TB3, 1794-TB3S, 1794-TB3K, 1794-TB3SK, 1794-TBKD, 1794-TBN, and 1794-TBNK. Operates with FLEX I/O communication adapters across DeviceNet, ControlNet, Profibus DP, and EtherNet/IP networks.
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 of the Allen-Bradley 1794-IA8?
The operating voltage range is 85 to 132 Volts AC at 47 to 63 Hertz.
Which terminal bases can be used with the 1794-IA8 module?
Compatible terminal bases include 1794-TB2, 1794-TB3, 1794-TB3S, 1794-TB3K, 1794-TB3SK, 1794-TBKD, 1794-TBN, and 1794-TBNK.
What is the indicative market price for the 1794-IA8?
Observed market reference pricing is approximately 79 USD for refurbished units. Figures are indicative market reference pricing only and are not a final quotation.
