Allen Bradley AB Output Module 1771-OW16 /B

Allen-Bradley 1771-OW16/B Digital Relay Contact Output Module

The Allen-Bradley 1771-OW16/B is a digital relay contact output module designed for use within the PLC-5 system. This module provides 16 relay outputs, facilitating the control of various external devices such as motors, solenoids, and indicator lights in industrial automation applications.

Key Features

• Output Configuration: The module offers 16 outputs, divided into two groups:
  • Channels 0-7: Normally Open (N.O.) contacts
  • Channels 8-15: Selectable between Normally Open (N.O.) and Normally Closed (N.C.) contacts
• Voltage Compatibility: Supports operating voltage ranges of 24-250V AC (47-63 Hz) and 24-150V DC, accommodating a wide array of industrial devices.
• Current and Power Ratings: Each output can handle up to 2 Amps, with maximum power ratings of 80 Watts per output for DC loads and 500 VA per output for AC loads. The total output power for the module is capped at 1280 Watts for DC and 1440 VA for AC.
• Isolation: Outputs are organized into two isolated groups, each with its own common terminal, ensuring that a failure in one channel does not impact others.
• Response Time: The module features an operate/release time of 10 milliseconds maximum, with a typical bounce time of 4 milliseconds, ensuring prompt and reliable switching.
• Durability: Designed for longevity, the relay contacts are rated for up to 300,000 operations under specified conditions.
• Installation: Compatible with 1771-A1B through A4B I/O chassis, the module is rack-mountable and utilizes the 1771-WN wiring arm for field connections.
• Environmental Specifications: Operates within a temperature range of 0°C to 60°C (32°F to 140°F) and can be stored between -40°C to 85°C (-40°F to 185°F). It supports a relative humidity range of 5% to 95% without condensation.

Additional Considerations

For optimal performance and to minimize electromagnetic interference (EMI), it is recommended to use an RC network filter across the module’s contacts, especially when switching inductive loads. This practice helps suppress arcing and reduces potential disruptions to adjacent electrical equipment.

The Allen-Bradley 1771-OW16/B module stands as a robust and versatile solution for managing digital outputs in complex industrial automation systems, offering flexibility and reliability to meet diverse operational requirements.