Allen-Bradley 1794-OB8 FLEX I/O Digital Output Module
$123.00
$320.00
Description
Allen-Bradley 1794-OB8 FLEX I/O Digital Output Module
Configured for discrete actuator signal execution in FLEX I/O control systems, the Allen-Bradley 1794-OB8 (1794-OB8 Digital Output Module) provides direct physical/electrical execution through 8 sourcing output channels for 24 VDC field devices.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 1794-OB8 |
| Brand | Allen-Bradley |
| Weight | 0.18 lbs |
| Operating Temp | 0 deg C to +55 deg C |
| Power Consumption | 3.3 W maximum at 31.2 VDC |
| Product Line | FLEX I/O |
| Module Type | Digital Output Module |
| Output Configuration | 8 sourcing, non-isolated outputs |
| Nominal Operating Voltage | 24 VDC |
| Operating Voltage Range | 10 VDC to 31.2 VDC |
| Output Current Capacity | 0.5 A maximum per channel, 4.0 A total module maximum |
| On-State Voltage Drop | 0.5 VDC maximum |
| Off-State Leakage Current | 0.5 mA maximum |
| Surge Current | 2 A for 10 ms, repeatable every 2 seconds |
| FlexBus Current | 30 mA at 5 VDC |
| Isolation Voltage | Tested at 850 VDC for 1 s between user power and FlexBus |
| Compatible Terminal Bases | 1794-TB2, 1794-TB3, 1794-TB3S, 1794-TBN, 1794-TBNF |
| Status Indicators | 8 yellow output status LEDs |
| Mounting Type | DIN rail mounting |
| Protection Rating | IP20 |
EtherNet/IP and Industrial Control Integration
The 1794-OB8 module operates as a FLEX I/O discrete output component within Allen-Bradley industrial control architectures. The module exchanges output data through the FLEX I/O backplane interface and supports deterministic I/O update behavior when installed with compatible communication adapters.
The output channels provide sourcing current paths for external loads including relays, solenoid valves, indicator lamps, and actuator interface circuits. The module uses LED channel indicators for local verification of commanded output states.
Frequently Asked Questions
Q: Can the 1794-OB8 module be replaced without disconnecting field wiring?
A: The module plugs into compatible FLEX I/O terminal base units, allowing module replacement while field wiring remains connected to the terminal base.
Q: What type of output signals does the 1794-OB8 provide?
A: The module provides 8 non-isolated sourcing digital outputs for 24 VDC field device control.
Q: What hardware interface is required for installation?
A: The module requires a compatible FLEX I/O terminal base unit, including 1794-TB2, 1794-TB3, 1794-TB3S, 1794-TBN, or 1794-TBNF models.
Field Installation Guidelines
Install the 1794-OB8 module on a compatible FLEX I/O terminal base unit mounted on a DIN rail system. Verify terminal base compatibility before installation and ensure field wiring is secured according to the terminal base wiring requirements.
Separate output wiring from high-voltage power conductors and high-noise sources where possible. Use appropriate cable routing practices for discrete actuator circuits and maintain proper grounding and shielding methods for the overall control cabinet installation.
Before energizing the module, verify the 24 VDC supply polarity, field device current requirements, and output load compatibility with the module channel ratings. Confirm LED status indication after commissioning to validate output channel operation.
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Meta Description: 1794-OB8 Allen-Bradley Digital Output Module. Brand New, Original Stock, Global Shipping available for FLEX I/O systems.
Product Type: Digital Output Modules
Tags: Digital Output Modules, Allen-Bradley FLEX I/O
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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