Get now: Allen-Bradley 1769-OA16 Compact Digital AC Output Module
Atlantechdrives provides you the 1769-OA16, a high-performance 16-point digital AC output module designed for the CompactLogix and MicroLogix 1500 systems. This module is essential for controlling high-voltage AC loads such as motor starters, solenoids, and indicators directly from the PLC backplane without the need for interposing relays in many standard industrial applications.
- Outputs: 16 Digital AC Outputs (Triac)
- Voltage Range: 85V to 265V AC (47-63 Hz)
- Current Rating: 0.25A per point @ 60°C
- Surge Current: 2A for 25ms (repeatable every 2s)
- Isolation: 265V continuous (reinforced insulation)
- Backplane Current: 225 mA @ 5.1V
Technical Architecture: Solid-State Triac Switching for AC Loads
Purchase now the 1769-OA16 to ensure high-reliability switching in your automation architecture. Unlike mechanical relay modules, the 1769-OA16 utilizes Triac (Solid-State) technology. This technical superiority means there are no moving parts to wear out, making it the definitive choice for high-duty cycle applications where outputs are toggled frequently. The module is engineered with integrated snubber circuits to protect the Triacs from voltage transients caused by inductive loads. With 16 points condensed into a single 1769 width, it provides excellent density for modern control panels. Each output point features opto-isolation to prevent high-voltage AC noise from feeding back into the sensitive CompactBus data rails. When you secure the 1769-OA16, you are investing in a module that supports both 120V and 240V AC nominal voltages, providing global flexibility for machine builders and plant engineers alike.
Installation Advice: Minimum Load and Leakage Current
When installing the 1769-OA16, it is vital to understand the characteristics of Triac outputs. Triacs have a «leakage current» (maximum 2.5mA at 120V) even when in the OFF state. If you are controlling very high-impedance loads, such as small LED indicators or sensitive relay coils, the leakage current might be enough to keep the load «ON» or cause flickering. In these cases, we recommend installing a «bleeder» resistor in parallel with the load. Additionally, ensure the module has a minimum load of 10mA to ensure the Triac latches correctly. Sourcing your 1769-OA16 from Atlantechdrives ensures you get a unit with healthy internal snubbers, protecting your system from premature Triac failure.
Maintenance and Signal Diagnostics
The 1769-OA16 features 16 amber status LEDs on the front panel that correspond to each output state. During maintenance, verify that the LEDs match the controller’s data table. Since Triacs generate more heat than DC transistors, ensure the PLC rack has adequate vertical spacing for convection cooling. If an output is stuck «ON,» it usually indicates a short-circuit has cleared the Triac; always check field wiring for shorts before replacing the module. Sourcing an authentic 1769-OA16 from Atlantechdrives guarantees the hardware quality required for 24/7 industrial uptime.
FAQs
Q: Can the 1769-OA16 switch DC loads?
A: No, Triac outputs are designed strictly for AC current. For DC switching, use the 1769-OB16 or similar.
Q: Does it require an external power supply?
A: It draws logic power from the backplane, but you must provide the AC field power (L1 and L2/N) to the terminal block.
Do you need more references from this brand? Explore our full catalog of Allen-Bradley here.
This 16-point AC output module is designed for switching line-voltage loads and integrates perfectly with the 1769-IA16 AC input card.
