Application Scenarios:

A food and beverage bottling plant runs a filler line controlled by an SLC 5/04 that has been in service since the late 1990s. The output side is a maze of interposing relays: the original 1746-OA8 cards had enough points, but each one had to drive a relay bank because the plant’s solenoid valves and conveyor contactors demand more current than the old cards could safely source. Every relay is another panel component, another coil to fail, another set of contacts to weld — and the maintenance team’s spares cabinet is now more relay catalog than PLC catalog.The 1746-OA16​ changes that arithmetic. Dropping one 1746-OA16​ into the rack delivers sixteen directly switched AC outputs with enough surge capability to drive contactor coils and solenoid valves straight from the module, letting the panel shop delete most of the interposing relay layer. The pain point it removes is compounding failure risk: fewer components in the current path means fewer things to troubleshoot at three in the morning, and the per-point LEDs tell a technician the output state without a meter.The same logic applies in material handling, where a 1746-OA16​ commands zone conveyor starters and diverter solenoids; in HVAC plant rooms driving damper actuators and fan contactors; and in OEM machinery shipped to multiple continents, where the wide 85–265V AC range means one module variant covers both 120V North American and 240V European installations. Because the two eight-point groups are isolated from each other, a single 1746-OA16​ can also switch loads fed from different phases or different AC supplies, provided the relevant electrical codes are respected.

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