Excellent PLC
Product Introduction
The Allen-Bradley 1771-OVN/B Low True Output Module is a digital output module designed for PLC-5 systems, used to control field devices in industrial automation applications. It provides reliable switching capability for DC loads and is configured with low-true (sink) output logic, meaning the module activates outputs by sinking current to ground.
This module is widely applied in machine control environments where multiple actuators, relays, solenoids, and indicator devices must be controlled simultaneously. With a high-density 32-output configuration, it enables efficient use of rack space while maintaining stable and organized output control.
Built on the 1771 I/O platform, the 1771-OVN/B is designed for robust industrial environments, ensuring dependable performance under electrical noise, vibration, and continuous operation conditions. Series B indicates an updated revision with improved compatibility and reliability.
Product Specifications
| Parameter | Value |
|---|---|
| Product Type | Digital Output Module |
| Series | 1771 I/O |
| Model Number | 1771-OVN/B |
| Number of Outputs | 32 (4 groups of 8) |
| Output Type | Low-True (Sink) |
| Output Voltage Range | 10–30 V DC |
| Signal Type | DC digital output |
| Group Configuration | 4 isolated groups |
| Isolation | Group isolation |
| Mounting Type | 1771 rack-mounted module |
| System Compatibility | Allen-Bradley PLC-5 systems |
| Environmental Resistance | Industrial vibration and EMI resistant |
| Series Version | Series B |
| Dimensions | 165 x 51 x 89 mm |
| Weight | 0.49 kg |
Applications
• Industrial machine automation
Controls multiple output devices such as relays, solenoids, and motor starters in automated machines.
• Process control systems
Used for switching valves, pumps, and auxiliary process equipment.
• Material handling systems
Supports control of conveyors, diverters, and sorting equipment.
• Packaging and assembly lines
Enables synchronized operation of multiple machine output points.
• PLC-based control systems
Provides high-density output control for general industrial automation applications.
Advantages
• High output density
32 outputs allow efficient control of multiple devices in a compact module format.
• Low-true (sink) output design
Compatible with field devices that require current sinking control logic.
• Grouped output structure
Improves wiring organization and simplifies fault isolation and maintenance.
• Stable industrial performance
Designed for reliable operation in harsh environments with electrical noise and vibration.
• Seamless PLC-5 integration
Fully compatible with the Allen-Bradley 1771 I/O system architecture.
• Updated Series B design
Enhanced revision improves system reliability and compatibility.
