Description
Product Name: 1790-0W8X Allen Braley Central control module
Product details:
The Allen-Bradley 1790-T8X8 (part of the CompactBlock™ LDX I/O series) is a versatile, low-profile distributed I/O solution designed for industrial automation.
Note: The 1790-OW8X specifically refers to an 8-point AC/DC Relay Output module within this family.
1. Product Description
The 1790-OW8X is a CompactBlock LDX I/O module featuring 8 Relay Outputs. It is designed to bridge the gap between expensive, high-density I/O and simple, stand-alone blocks. It uses the DeviceNet™ network protocol to communicate with a master controller (like a ControlLogix or CompactLogix), providing a cost-effective way to add points of control in decentralized locations.
2. Technical Specifications
| Feature | Specification |
| I/O Type | 8-Point Relay Output (Electromechanical) |
| Network Communication | DeviceNet |
| Output Voltage Range | 5–30V DC or 5–125V AC |
| Current Rating | 2.0A per point (resistive) |
| Power Consumption | 24V DC Network Power |
| Isolation Voltage | Tested at 1250V AC |
| Mounting | DIN Rail or Panel Mount |
| Dimensions | Approx. 142mm x 45mm x 52mm |
3. Product Advantages
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Space-Saving Design: The “LDX” stands for Low Profile. Its slim form factor allows it to fit into shallow electrical boxes or tight spaces on a machine.
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Cost-Efficiency: Ideal for applications requiring only a small number of I/O points without the overhead of a full chassis.
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Flexible Switching: Since it uses relay outputs, it can switch both AC and DC loads, making it compatible with various field devices like solenoid valves, motor starters, and indicators.
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Removable Terminals: Features removable screw-terminal blocks, which simplifies wiring and reduces downtime during maintenance.
4. Important Considerations & Precautions
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Relay Lifespan: Unlike solid-state outputs, mechanical relays have a finite life cycle (number of operations). Avoid high-frequency switching to prevent premature failure.
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Surge Protection: When switching inductive loads (like coils or motors), use external surge suppressors (snubbers) to protect the relay contacts from arcing.
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Network Power: The module draws power directly from the DeviceNet network. Ensure your power supply can handle the cumulative current draw of all modules on the trunk line.
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Environment: Ensure the ambient temperature stays within the operating range (0°C to 55°C) and avoid environments with excessive vibration.
5. Typical Applications
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Conveyor Systems: Controlling small motors or pneumatic diverters along a long assembly line.
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Material Handling: Managing sensors and actuators in localized sorting stations.
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Packaging Machinery: Interfacing with intermittent relays, lamps, and small solenoids.
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Remote Monitoring: Providing a small cluster of control points in a remote pump station or HVAC unit.
Advantages: Foxboro, OVATION, TRICONEX, Allen-Bradley, ABB, Motorola, Siemens Moore, Ge Fanuc, Woodward, Bently Nevada and other major import brands!
We have the same series of models in stock. If you don’t find the model you need, please contact us and we will provide you with an official quotation！
Colour：new Warranty: 12 months
Lead Time：3-day working day Country of origin: Sweden
Price: Please contact us Product weight：0.515kg
Shipping Port: Xiamen, China
Payment: Bank of Chicago, Bank of Singapore
Express cooperation: fedex, DHL, UPS and your express account
Service: Professional Sales provides 24 hours /7 days online service
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