1794-OA8 Allen-Bradley FLEX I/O Digital Output Module
$123.00
$320.00
Description
Allen-Bradley 1794-OA8 FLEX I/O Digital Output Module
The Allen-Bradley 1794-OA8, also cataloged as the 1794-OA8 Digital Output Module, operates as a dedicated hardware component for AC digital signal switching within the Allen-Bradley FLEX I/O 1794 system.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 1794-OA8 |
| Brand | Allen-Bradley |
| Origin | USA |
| Weight | 0.24 lbs |
| Power Consumption | 4.1 W maximum at 0.5 A load |
| Product Type | FLEX I/O Digital Output Module |
| Product Line | FLEX I/O 1794 |
| Output Channels | 8 nonisolated outputs |
| Output Voltage | 120 VAC nominal |
| Output Current Rating | 4.0 A |
| On-state Current | 5 mA minimum per output |
| On-state Voltage Drop | 1.0 V maximum at 0.5 A |
| Off-state Leakage Current | 2.25 mA maximum |
| Isolation Voltage | 120 V continuous |
| FlexBus Current | 80 mA at 5 VDC |
| Thermal Dissipation | 14.0 BTU/hr at 0.5 A load |
| Terminal Base Compatibility | TBNF/TB2/TB3/TB3S/TBN screw connection |
| Protection Rating | IP20 |
EtherNet/IP and FLEX I/O Backplane Integration
The 1794-OA8 module interfaces with the FLEX I/O 1794 platform through the FlexBus backplane connection. The module requires 80 mA at 5 VDC FlexBus current and provides eight AC digital output points for field device control. The nonisolated output architecture requires external consideration of field wiring separation and common reference arrangements during panel design. The module supports installation in non-hazardous locations and Class I, Division 2, Groups A, B, C, and D hazardous locations according to applicable North American hazardous location approvals.
Frequently Asked Questions
Q: Are the 1794-OA8 output channels electrically isolated from each other?
A: No. The eight output channels are nonisolated and share the module output reference structure. Field wiring design must account for the nonisolated configuration.
Q: What terminal bases are compatible with the 1794-OA8 module?
A: The module is designed for use with TBNF, TB2, TB3, TB3S, and TBN terminal bases with screw connection interfaces.
Q: What is the FlexBus current requirement of the module?
A: The module requires 80 mA at 5 VDC from the FLEX I/O backplane.
Field Installation Guidelines
Install the 1794-OA8 module on the specified FLEX I/O terminal base and verify mechanical engagement before applying field power. Maintain separation between AC field wiring and low-level signal wiring to reduce electrical interference.
Connect protective grounding and panel bonding according to the enclosure design and applicable industrial installation practices. Use appropriate wire routing methods to prevent accidental contact between adjacent output circuits. Verify AC supply voltage, load current requirements, and output device compatibility before commissioning.
Confirm that the terminal base connections are correctly seated and inspect the module status indicators after power application. Firmware and configuration compatibility should be checked when integrating the module into an existing FLEX I/O system.
Features
Minimum Order Quantity (MOQ)
We welcome bulk orders and have a minimum order quantity of just one unit.
Certificates and Documentation
Upon request, we can provide all necessary documentation, including Certificates of Origin/Conformance and other required export documents.
Delivery Time
For items in stock, we aim to deliver within 1-3 days after payment confirmation. Items with specified lead times will be delivered according to the quoted schedule.
Payment Methods
We accept 100% T/T (Telegraphic Transfer) payment before shipping. For items with lead times, a 30% deposit is required upfront, with the remaining 70% due before shipment. For RMB transfers, please contact us if you have an agent in China.
Warranty
We offer a standard one-year warranty on all new and original items. If you require an extended warranty, please contact us for additional cost details.
Refund and Return Policy
Your satisfaction is important to us. If you need to return an item, it must be done within 30 days of the order date. The product must be unused, unopened, and in its original packaging with all accessories included. Refunds are processed within 5-7 business days after we receive the returned item. Please note that shipping and related charges are non-refundable.
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