Allen Bradley
155 in stock
Allen-Bradley 1794-OA8I FLEX I/O AC Digital Output Module
Allen-Bradley 1794-OA8I FLEX I/O AC Digital Output Module
Manufacturer: Allen Bradley
Product No.: 1794-OA8I
Product Type: Output Module
Product Origin: USA
Payment: T/T
Weight: 1000g
Shipping port: Xiamen
Warranty: 12 months
Description
The Allen-Bradley 1794-OA8I is an isolated AC digital output module designed for the FLEX I/O distributed I/O platform. It provides eight independently isolated outputs that allow a controller to switch AC loads such as motor starters, contactors, indicator lamps, and other field devices.
The module is engineered for reliable operation in industrial automation systems and integrates seamlessly with FLEX I/O adapters and controllers. With channel-to-channel isolation and robust surge current capability, the 1794-OA8I ensures stable switching performance even in electrically noisy environments. Its compact design allows it to be mounted on various FLEX I/O terminal bases, enabling flexible installation and simplified wiring for control cabinets and distributed field panels.
Specifications
| Parameter | Specification |
|---|---|
| Number of Outputs | 8 isolated outputs |
| Recommended Terminal Base | 1794-TBN(1), 1794-TBNF, 1794-TB2, 1794-TB3, 1794-TB3S, 1794-TBKD, 1794-TBNK, 1794-TBNFK, 1794-TB3K, 1794-TB3SK |
| Output Voltage (Min) | 85 V AC |
| Output Voltage (Nominal) | 120 V AC |
| Output Voltage (Max) | 132 V AC |
| Output Current Rating | 4.0 A total (8 outputs @ 500 mA each) |
| On-State Current (Min) | 5.0 mA per output |
| On-State Current (Max) | 500 mA per output @ 55 °C; 750 mA per output @ 35 °C; 1.0 A on 4 non-adjacent outputs and 500 mA on remaining 4 outputs @ 30 °C |
| On-State Voltage Drop (Max) | 1.0 V @ 0.5 A |
| Surge Current | 7 A for 40 ms, repeatable every 8 seconds |
| Off-State Leakage Current (Max) | 2.25 mA |
| Isolation Voltage | 120 V continuous, field to backplane and channel to channel |
| Isolation Test | Tested at 1250 V AC for 60 seconds |
| Output Signal Delay (Off → On) | ½ cycle maximum |
| Output Signal Delay (On → Off) | ½ cycle maximum |
| FlexBus Current | 80 mA @ 5 V DC |
| Power Dissipation (Max) | 4.1 W @ 0.5 A; 6.3 W @ 0.75 A; 6.3 W @ 1.0 A |
| Thermal Dissipation (Max) | 14.0 BTU/hr @ 0.5 A; 21.2 BTU/hr @ 0.75 A; 21.4 BTU/hr @ 1.0 A |
