ALLEN BRADLEY 1769-OA16 CompactLogix AC Output Module

The ALLEN BRADLEY 1769-OA16, also cataloged as the 1769-OA16 AC Output Module, operates as a dedicated hardware component for solid-state AC load switching within CompactLogix and MicroLogix 1500 controller platforms. Operating across 16 discrete channels organized into 2 isolated groups of 8 outputs, the module converts backplane logic commands into 120/240 VAC control signals for actuators, solenoids, and indicators. The unit executes zero-crossing AC switching across an operating range of 85 to 265 VAC, maintaining deterministic response times without physical contact degradation.

Hardware Specifications

Deterministic Backplane & I/O Density Scaling

The 1769-OA16 communicates over the CompactLogix backplane bus, supporting dynamic I/O density scaling up to a distance rating of 8 modules from the system power supply. The solid-state output circuitry maintains backplane bus communication velocity across EtherNet/IP deterministic networks by executing sub-cycle switching delays within 1/2 cycle (turn-on and turn-off). Firmware flash compatibility across Series A and B platforms ensures seamless integration without backplane timing jitter or channel mapping errors during expansion.

Frequently Asked Questions

Q: What is the maximum allowable surge current per point on the 1769-OA16 solid-state outputs?

A: Each output channel handles a surge current up to 10 A for 47 ms, repeatable every 2 seconds, protecting internal triacs against inductive inrush spikes.

Q: Can the two output groups operate on different AC voltage sources simultaneously?

A: Yes, the two output groups are galvanically isolated from each other, supporting AC voltage source mixing across 120 VAC and 240 VAC supply rails.

Field Installation Guidelines

Mount the 1769-OA16 onto an IEC standard DIN rail or panel backplate using the integrated mounting feet, securing adjacent bus levers to establish backplane connectivity. Ensure the module is installed within 8 slot positions of the system power supply to comply with the power supply distance rating.

Wire field devices to the 1769-RTBN18 removable terminal block using 22-14 AWG solid or 22-16 AWG stranded copper wire rated for at least 90 deg C. Torque terminal block screws to 0.68 Nm (6 lb-in) to secure connections. Route AC output cables in grounded wire ducts separate from low-voltage DC signals and communication lines to mitigate cross-talk and electromagnetic interference.