Description
Allen-Bradley 1794-OA8I Flex I/O 8-Point 120V AC Digital Output Module
The Allen-Bradley 1794-OA8I is an 8-channel isolated AC digital output module. It belongs to the versatile FLEX I/O system from Rockwell Automation. This module acts as a crucial interface between your PLC controller and various field actuators.
Key Technical Specifications
- Brand: Allen-Bradley
- Model: 1794-OA8I
- Product Type: Flex I/O Digital Output Module
- Number of Outputs: 8 Isolated Channels
- Output Voltage: 120V AC Nominal
- Output Current Rating: 4.0A Total (0.5A per point)
- On-state Voltage Drop: 1.0V max. at 0.5A
- Off-state Leakage Current: 2.25mA max.
- Isolation Voltage: 120V Continuous
- Flexbus Current: 80mA @ 5V DC
- Power Dissipation: 4.1W at 0.5A max.
- Thermal Dissipation: 14.0 BTU/hr at 0.5A max.
Installation & Wiring Guide
- You must install the module into a compatible FLEX I/O terminal base.
- Set the keyswitch on the base to Position 8 for correct operation.
- Compatible bases include the 1794-TB3 and 1794-TB2.
- Wire each output device to the even-numbered terminal on the base.
- Connect the 120V AC power source to the adjacent odd-numbered terminal.
- Use a separate isolated common for each output for optimal performance.
- A yellow LED indicator shows the active status for each output channel.
Packaging Information
- You will receive one 1794-OA8I module.
- The package includes a printed data sheet for quick installation reference.
- We ship all orders via reliable carriers like FedEx, UPS, or DHL.
Frequently Asked Questions (FAQ)
- What is the current rating per output? Each output can handle up to 0.5A.
- What terminal bases work with this module? It works with 1794-TB3S, 1794-TB2, 1794-TB3, 1794-TBN, and 1794-TBNF.
- How do I know if an output is active? A yellow LED lights up for each active output.
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