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- Allen Bradley
- 1771-OBN
- DC High Truth Output Module
- USA
- 165 x 51 x 89 mm
- 0.94 kg
- Xiamen, China
- New & In Stock
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We have a 10-year logistics and express cooperation agreement, so our products can be shipped to any place in the world.
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Our products are imported in bulk from the place of origin. Because of the cooperative relationship, our products are all original and 100% new.
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We provide 7*24 hours service to our customers. We will be there whenever you need us.
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All our products are priced very favorably because we have our own warehouse and supply.
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Product Overview
The Allen-Bradley 1771-OBN DC High-Truth Output Module is designed to provide high-reliability DC output control in industrial automation systems. It allows PLC-based systems to drive DC-powered devices such as actuators, solenoids, relays, and indicators with a high-truth logic output, ensuring consistent ON/OFF operation for critical processes.
Its modular form factor fits perfectly into the 1771 I/O chassis, offering robust and organized DC output management.
Technical Specifications
| Parameter | Details |
|---|---|
| Manufacturer | Allen-Bradley |
| Model | 1771-OBN |
| Product Type | DC High-Truth Output Module |
| Function | Provides reliable DC output control with high-truth logic |
| Compatible Systems | Allen-Bradley 1771 I/O chassis, PLCs, DCS, SCADA systems |
| Output Type | DC high-truth switching outputs |
| Output Voltage | Configurable per system requirements |
| Mounting Type | Chassis-mounted (1771 I/O rack) |
| Dimensions | 165 × 51 × 89 mm |
| Weight | 0.94 kg |
| Operating Environment | Industrial automation, process control, manufacturing systems |
| Slots Required | Standard 1771 I/O module slot |
| Installation | Plug-in into 1771 I/O chassis |
Function and Working Principle
The 1771-OBN operates by:
- Receiving control signals from a PLC or DCS system
- Activating DC output channels according to high-truth logic (ON = positive voltage applied to the load)
- Providing electrical protection for output circuitry
- Organizing terminals for clean and safe wiring
- Supporting modular replacement or system expansion without interrupting operation
This ensures precise, reliable, and safe DC output operation for industrial processes.
Role in Industrial Automation
The 1771-OBN serves as a critical DC output interface:
- Controls actuators, solenoids, relays, and indicator devices
- Ensures reliable high-truth DC switching, where output ON corresponds to positive voltage
- Maintains organized wiring for easier maintenance and troubleshooting
- Supports modular expansion within the 1771 I/O chassis
- Enhances overall system reliability and control accuracy
It is ideal for manufacturing, process automation, and industrial control systems requiring high-integrity DC output signals.
Industrial Applications
The 1771-OBN is commonly used in:
- DC-powered actuator and solenoid control
- PLC/DCS-controlled process automation with high-truth logic requirements
- SCADA systems needing accurate DC output switching
- Industrial automation where modular, robust, and reliable DC output modules are essential
- Critical process control systems requiring consistent ON/OFF output operation
Its robust construction ensures dependable operation in industrial environments.
Installation and System Integration
Installation steps:
- Insert the module into a standard 1771 I/O chassis slot
- Connect DC output wiring to actuators, solenoids, relays, or indicator devices
- Verify proper wiring and load ratings
- Configure PLC or DCS to control high-truth output channels
- Maintain accessibility for inspection, maintenance, and system expansion
Correct installation ensures safe, reliable, and accurate DC output control.
Compatible System Components
The 1771-OBN integrates with:
- Allen-Bradley 1771 I/O chassis
- PLC controllers and DCS output systems
- DC-powered actuators, solenoids, relays, and indicators
- SCADA systems for monitoring and control
- Other 1771 I/O modules for modular system expansion
This ensures a reliable, organized, and scalable DC output network.
Recommended Alternative Models
| Model | Type | Key Feature | Application |
|---|---|---|---|
| Allen-Bradley 1771-OBD | DC Output Module | Standard DC output control | PLC/DCS systems |
| Allen-Bradley 1771-OB | DC Output Module | Multi-point DC outputs | Industrial automation |
| Allen-Bradley 1771-OW16 | Relay Output Module | Multi-relay DC/AC control | Automation panels |
| Siemens SM 1232 | Digital Output Module | DC switching outputs | PLC control systems |
| GE IS200TRLYH2C | Relay Output Terminal Block | DC relay outputs | PLC/automation panels |
Key Advantages
- Provides reliable high-truth DC output control for industrial devices
- Modular design allows easy installation, maintenance, and expansion
- Organized terminals for efficient wiring and troubleshooting
- Robust construction ensures long-term industrial performance
- Fully compatible with Allen-Bradley 1771 I/O chassis and PLC systems
- Supports modular expansion and scalable system design
Technical FAQs
What is high-truth logic?
High-truth logic means that when the output is ON, a positive voltage is applied to the load, ensuring clear ON/OFF signaling.
How is it mounted?
Plug-in module for Allen-Bradley 1771 I/O chassis.
Is it suitable for harsh industrial environments?
Yes, designed for reliable operation in demanding conditions.
Is it compatible with other 1771 modules?
Yes, fully compatible within the 1771 I/O chassis system.
Conclusion
The Allen-Bradley 1771-OBN DC High-Truth Output Module is a robust, precise, and modular solution for DC output control. Its high-truth logic, organized terminals, and compatibility with the 1771 I/O chassis make it essential for PLC, DCS, and SCADA systems requiring safe, reliable, and accurate DC output control in industrial automation.