Allen Bradley 1771-OW Selectable Contact Output Module

The Allen-Bradley 1771-OW Selectable Contact Output Module is a versatile component designed for the PLC-5 system, offering eight relay contact outputs organized into four isolated groups of two channels each. Each output can be configured as either normally open (N.O.) or normally closed (N.C.), providing flexibility to meet specific application requirements.

Key Features

• Configurable Outputs: Each of the eight relay outputs can be individually set to N.O. or N.C., allowing tailored control logic.
• Electrical Isolation: Outputs are electrically isolated from the logic circuitry, enhancing system reliability.
• LED Indicators: Each channel is equipped with an LED indicator for real-time status monitoring.
• Compatibility: Designed for seamless integration with the 1771 I/O chassis and compatible with the 1771-WD field wiring arm.
• Versatile Voltage Support: Supports both AC and DC output voltages, accommodating a range of industrial applications.

Technical Specifications

• Operating Voltage Range: 24 to 138 V AC RMS; 24 to 125 V DC.
• Continuous Current per Output: 1.0 A.
• Minimum Contact Load: 10 mA at 24 V AC/DC.
• Power Dissipation: 3.3 to 3.7 W.
• Thermal Dissipation: 11.3 to 12.7 BTU/hr.
• Backplane Current: Up to 700 mA (with all relays energized).
• Signal Delay: 45 ms (AC), 50 ms (DC) turn-off.
• Isolation: Outputs are electrically isolated from the logic circuitry.

Installation and Configuration

The 1771-OW module is installed in the 1771 I/O chassis and utilizes the 1771-WD field wiring arm for connections. Each output channel’s configuration (N.O. or N.C.) is selectable via internal jumpers, allowing customization based on system requirements. The module’s design ensures that outputs are electrically isolated from the logic circuitry, providing robust performance in various industrial environments.

Applications

This module is ideal for industrial automation and process control applications where flexible and reliable relay output configurations are essential. Its ability to handle both AC and DC voltages, combined with configurable output states, makes it suitable for a wide range of control scenarios.

In summary, the Allen-Bradley 1771-OW Selectable Contact Output Module offers a combination of flexibility, reliability, and ease of integration, making it a valuable component in complex control systems.