1771-OAN

Overview of Allen-Bradley 1771-OAN AC Output Module

The Allen-Bradley 1771-OAN is a 32-point AC output module designed for PLC-5 and legacy PLC systems. It provides source outputs requiring sink inputs and is used for controlling AC loads up to 264 V AC at a frequency range of 47 to 63 Hz. The module is organized into four groups of eight outputs and supports 1/2- or 1-slot addressing in I/O chassis compatible with 1771-A1B through A4B models.

Key Features of 1771-OAN

• 32 AC outputs arranged in 4 groups of 8 channels each.
• Voltage range: 85 to 264 V AC, nominal 120/240 V AC.
• Frequency range: 47 to 63 Hz.
• Source type output requiring sink input devices.
• Maximum surge current: 10 A for 25 milliseconds per output.
• Maximum continuous load current: 10 mA per output.
• Thermal dissipation rating: 55.4 BTU/hr.
• Backplane current: Maximum 800 mA @ 5 V DC.
• Compatible with 1771-A1B to -A4B chassis and later models.
• Not compatible with 2-slot addressing; 1-slot or 1/2-slot addressing required.
• Includes necessary wiring arms and hardware for installation.
• Operating environment: Industrial standard.

Technical Specifications

Applications / Use Cases

The 1771-OAN module is suited for controlling AC loads such as solenoids, lamps, and valves in PLC-5 based industrial control systems. Its robust design and group configuration make it suitable for process automation, material handling, and manufacturing control environments.