Allen Bradley 12 To 120V AC Output Module 1771-OAD /B

Allen-Bradley 1771-OAD/B AC Output Module

The Allen-Bradley 1771-OAD/B is a 12 to 120V AC Digital Output Module designed for use with PLC-5 systems. It provides reliable control over industrial processes by delivering precise AC outputs to connected devices.

Key Features

• Number of Outputs: 16
• Operating Voltage Range: 10 to 138V AC at 47–63 Hz
• Output Current Rating: 2 A per output, with a maximum of 8 A per module
• Surge Current: 25 A per output for 100 ms, repeatable every 1 second
• Minimum Load Current: 5 mA per output
• On-State Voltage Drop: Maximum of 1.5 V at load currents greater than 50 mA
• Off-State Leakage Current: Maximum of 3.0 mA per output at 138V AC
• Signal Delay: Zero crossing 8.3 ms at 60 Hz, 10.0 ms at 50 Hz
• Power Dissipation: 13 Watts maximum, 1.5 Watts minimum
• Thermal Dissipation: 48.0 BTU/hr maximum, 5.13 BTU/hr minimum
• Backplane Current: 295 mA
• Isolation Voltage: Tested to 2500 V DC for 1 second
• Compatible Chassis: 1771-A1B through -A4B or later I/O chassis, 1771-AM1, -AM2 chassis
• Field Wiring Arm: Standard: 1771-WH; Optional: 1771-WHF
• Fuse: 12 A, 250 V rectifier fuse (1/4 x 1-1/4 inch), Bussman GBB12, IEC 127 Type F

Installation Considerations

The 1771-OAD/B module is compatible with various Allen-Bradley chassis, excluding the 1771-A1, 1771-A2, and 1771-A4 models. It receives power through the 1771 I/O chassis backplane, requiring 295 mA from the chassis power supply. Ensure that the total power requirements of all modules in the I/O chassis do not exceed the capacity of the chassis backplane and power supply.

Applications

This module is suitable for controlling AC-powered devices in industrial automation systems, offering precise and reliable output control for various applications.

For detailed installation instructions and safety guidelines, refer to the official Allen-Bradley documentation.