1771-OAN | Allen-Bradley PLC-5 Digital AC Output Module

Product Description

The 1771-OAN from Allen-Bradley is a high-performance digital AC output module designed for the PLC-5 system. It provides 32 discrete outputs organized in four groups of eight channels each, supporting precise control of industrial AC loads. The module features a nominal operating voltage of 120/240 VAC and accommodates 10–138 VAC input range, with a maximum continuous current of 1A per output at 30°C. Conformal coating ensures enhanced durability in challenging industrial environments.

Backplane current is 800 mA, and the module supports BDC or natural binary data formats. Signal timing includes a typical off-to-on delay of 1 ms and on-to-off delays of 9.3 ms at 60Hz or 11 ms at 50Hz. Installation is rack-mountable, compatible with the 1771-WH wiring arm, and designed for reliable long-term operation in PLC-5 control applications.

Technical Specifications

• Model: 1771-OAN

• Product Type: Digital AC Output Module

• Number of Outputs: 32 (4 groups of 8 channels)

• Voltage Category: 85–264 VAC

• AC Operating Voltage: 10–138 VAC

• Nominal Voltage: 120 / 240 VAC

• Max Continuous Current Per Output: 1.0 A @ 30°C, 0.3 A @ 60°C

• Max Module Current: 8A

• Backplane Current: 800 mA

• Data Format: BDC or Natural Binary

• Typical Signal Delay (Off): 45 ±15 ms (AC), 50 ms (DC)

• Signal Delay (Max Off to On): 1 ms

• Signal Delay (Max On to Off): 9.3 ms @ 60Hz, 11 ms @ 50Hz

• Mounting: Rack-Mountable

• Wiring Arm: 1771-WH

• Protection: Conformal Coated

Applications

Designed for discrete AC control in PLC-5 systems, ideal for controlling motors, solenoids, indicators, and other industrial AC devices. Suitable for use in manufacturing automation, process control, and machine control environments.

FAQ

Q: How many outputs does the 1771-OAN provide?
A: It provides 32 outputs divided into four groups of eight channels each.

Q: What is the maximum current per output?
A: 1.0 A per output at 30°C, reducing to 0.3 A at 60°C.

Q: Is it compatible with standard PLC-5 racks?
A: Yes, the module is rack-mountable and supports the 1771-WH wiring arm