The Allen-Bradley 1734-OA4, also cataloged as the 1734-OA4 Digital AC Output Module, operates as a dedicated hardware component for discrete AC load switching within Allen-Bradley Point I/O platforms.
Configured for EtherNet/IP, ControlNet, DeviceNet, and PROFIBUS network adapters, the 1734-OA4 maintains low-latency data exchange across distributed backplanes. Deterministic network performance is sustained by processing 4 discrete AC channels with high scanning throughput while drawing only 75 mA from the internal POINTBus. Firmware flash compatibility enables consistent I/O synchronization across Point I/O mounting assemblies, supporting scalable channel density while maintaining strict AC switching profiles.
Frequently Asked Questions
Q: What is the backplane current draw of the 1734-OA4 module?
A: The module draws 75 mA at 5 VDC directly from the POINTBus logic backplane.
Q: How does ambient temperature affect the output current capacity of the 1734-OA4?
A: The module delivers a full 2 A total rating up to 113 deg F (45 deg C), after which it derates uniformly down to 1.4 A at temperatures above 131 deg F (55 deg C).
Field Installation Guidelines
Align the 1734-OA4 module over the mounting base assembly and push firmly into the slot until the lock mechanism latches onto the DIN rail.
Wire field AC loads to the terminal block, verifying output current does not exceed 0.75 A per channel and total module current stays within thermal derating limits.
Ensure power distribution wiring matches the specified 120 to 240 VAC operational limits (264 VAC maximum) to prevent component overvoltage stress.
Maintain separation between high-voltage AC load lines and low-voltage network bus connections to prevent electro-magnetic interference on the POINTBus communication backplane.
