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The 1794-OA8K output module is a Flex I/O 1794 series output module that has been designed and manufactured by Allen-Bradley/Rockwell Automation. It comes with 8 output channels that are not isolated. The 1794-OA8K output module is rated for safe use in certain kinds of hazardous locations in Europe and North America. Its nominal voltage rating is 120 Volts AC, its minimum output voltage rating is 85 Volts AC, and its maximum output voltage rating is 132 Volts AC. The 1794-OA8K output module weighs about 3.84 ounces and it has 8 yellow LED status indicators for its outputs.
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| Manufacturer | Allen Bradley |
|---|---|
| Product Type | Flex I/O Digital Output Module |
| Product Line | Flex I/O 1794 |
| Part Number | 1794-OA8K |
| Weight | 1.00 lbs (0.45 kg) |
| Outputs | 8 Nonisolated |
| Output Voltage nom. | 120V AC |
| Output Current Rating | 4.0A |
| On-state Current min. | 5mA per Output |
| On-state Voltage Drop max. | 1.0V @ 0.5A max. |
| Off-state Leakage Current max. | 2.25mA |
| Isolation Voltage | 120V Continuous |
| Flexbus Current | 80mA @ 5V DC |
| Power Dissipation | 4.1W @ 0.5A max. |
| Thermal Dissipation | 14.0 BTU/hr. @ 0.5A max. |
The Allen-Bradley 1794-OA8K Flex I/O digital output module is an 8-point digital AC output module from the Allen-Bradley Flex I/O system that is designed to provide high-performance digital output solutions to a wide range of distributive applications. The 1794-OA8K digital output module features conformally-coated circuitry that protects the module from harsh industrial environments, making it ideal for use in extreme industrial applications. The 1794-OA8K digital output module requires an external AC power supply with up to 50 Amps of surge current rating for 1/2 cycle to power-up. It has 8 non-isolated output channels with an 85 to 120 Volts AC voltage rating on each channel. It has a maximum on-state current rating of 5 to 75 milliAmps per channel at (35 degrees Celsius), and 4 Amps of maximum current per module. Â It also has a minimum on-state voltage rating of 85 Volts AC and a maximum voltage rating of 132 Volts AC.
The 1794-OA8K digital output module has a maximum leakage current rating of 2.25 milliAmps in the off-state and a maximum voltage drop of 1 Volt AC at 0.5 Amps of current. This module has a maximum output current surge of 7 Amps for 45 milliseconds, repeatable every 8 seconds. The 1794-OA8K digital output module has a 1/2 cycle maximum signal delay time. The 1794-OA8K digital output module has a maximum power dissipation rating of 4.1 Watts at 0.5 Amps, and of 6.3 Watts at 0.75 Amps and 1 Amp. It can be installed on compatible Allen-Bradley 1794 terminal base units and it can be removed or installed without rewiring the entire base. The 1794-OA8K digital output module comes with 8 yellow status indicators that show the module’s operational status. It has the T4/T4A IEC/North American designated temperature codes, and it comes with an open type of enclosure.
| Revision Part # | Also known as | |
|---|---|---|
| 1794-OA8K Ser A | 1794-OA8K/A, Series A, Rev A | |
| Don't see your particular revision? Contact us now. | ||
The Allen-Bradley 1794-OA8K Flex I/O Digital Output Module has 8 Nonisolated Outputs, a 120V AC Output Voltage nom., and a 4.0A Output Current Rating. It also operates with a 1.0V @ 0.5A max. On-state Voltage Drop max. and a 2.25mA Off-state Leakage Current max..