1769-OA16 — Compact I/O 16-Point 120/240V AC Output Module

The 1769-OA16 is a 16-point solid-state AC output module for the Compact I/O platform, organized into two isolated groups of 8 points, with each group independently capable of running at 120V or 240V AC. This split lets a single module drive a mix of voltage classes without requiring separate modules for each — output current per point is rated at 0.5A at 30°C ambient (0.25A at 60°C), with the module supporting half-cycle ON and OFF switching delays consistent with solid-state AC switching technology.

Specifications

Parameter	Value
Part Number	1769-OA16
Platform	Compact I/O (1769)
Output Points	16 (2 groups of 8, isolated)
Voltage Range	85–264V AC, 47–63 Hz
Current per Point	0.5 A @ 30°C, 0.25 A @ 60°C
Current per Module	4 A @ 30°C, 2 A @ 60°C
Surge Current	5 A for 25 ms, repeatable every 2 s
Switching Delay	½ cycle ON, ½ cycle OFF
Backplane Current	225 mA @ 5.1V DC
Power Supply Distance Rating	8 modules
Operating Temperature	−20°C to 55°C

Mixing 120V and 240V on One Module

The two isolated groups are the defining feature of this module — rather than committing every point on the module to the same voltage class, eight points can run 120V AC field devices while the other eight run 240V AC devices simultaneously. This is useful in panels with a genuine mix of voltage classes among the AC-switched loads: pilot lamps and small solenoids on 120V alongside larger contactor coils or heater elements on 240V, all from a single module rather than two separate single-voltage modules.

The half-cycle switching delay reflects the nature of solid-state AC switching — the output transitions at the next zero-crossing of the AC waveform rather than instantaneously, which limits inrush stress on the switched load and the module's own output circuitry. At 60 Hz this works out to roughly 8.3 ms; at 50 Hz, roughly 10 ms — a predictable, repeatable delay rather than an unpredictable mechanical relay bounce.

FAQ

Q: Can one group run 120V while the other runs 240V at the same time?

Yes. The two groups of 8 points are electrically isolated from each other, so each group can be wired to a different AC voltage class independently and operated simultaneously.

Q: Is output fusing required for each channel?

External fusing per output channel is recommended to protect the module from a field wiring fault — the module's solid-state outputs don't include this protection internally.

Q: What power supplies are compatible with this module?

The 1769-PA2, 1769-PB2, 1769-PA4, and 1769-PB4 Compact I/O power supplies are all compatible — selection depends on the overall system's backplane power budget across all installed modules.

Q: How far from the system power supply can this module be installed in the I/O bank?

The power supply distance rating is 8 modules — this module should be within that distance from the power supply along the backplane to ensure reliable backplane voltage.

1769-OA16 New Factory Sealed 1769OA16 16 Pt 240VAC Output Module