Overview
The Allen-Bradley 1756-OA16 is a dedicated AC digital output module for ControlLogix systems. Operating over 74–265VAC at 50/60 Hz, this 16-point output module delivers 0.5A per output channel and is designed for pilot-duty AC load switching in industrial controls, machinery control, and process automation. It mounts directly into ControlLogix chassis and communicates with any ControlLogix processor across the backplane, ControlNet, or EtherNet/IP networks.
Key Features
- 16 digital output channels organized into two isolated groups of 8
- AC voltage range 74–265VAC compatible with 120/240V nominal supplies
- 0.5A per output point at rated voltage
- Operating frequency 47–63 Hz (50/60 Hz nominal)
- Single-slot chassis mount design
- Integrated fusing per group with blown-fuse detection
- Built-in module health and output status monitoring
- Complies with CE, UL, CSA, CCC, RCM, and NRTL certifications
Technical Specifications
- Backplane voltage input: 5.1V at 400 mA; 24V at 2 mA
- Backplane power consumption: 2.1W typical
- Output dissipation: 6.5W at 60°C; 22.17 BTU/h thermal
- Response time: 9.3 milliseconds
- Operating temperature: 0–60°C
- Module isolation: 50V continuous between output groups
- Mounting: Tension clamp spring terminals
- Diagnostics: ±1 ms timestamp, fuse status per group
Typical Applications
- Motor starter and contactor control
- Solenoid valve actuation in hydraulic and pneumatic systems
- Indicator light and alarm control
- Process heater and heating element switching
- Industrial lighting and emergency system control
- Machinery auxiliary load management
Compatibility & Replacements
Compatible With
- ControlLogix chassis (1756 series backplane)
- ControlLogix processors (1756-L55, 1756-L61, 1756-L62, 1756-L71, 1756-L72, 1756-L73)
- EtherNet/IP and ControlNet linked networks
- Studio 5000 Logix Designer software
Replaces / Drop-In Replacement For
- 1756-OA16K (equivalent variant)
- Legacy 1756-OA16 (Series A/B/C interchange)
Works With
- Studio 5000 Logix Designer (all versions)
- ControlLogix programming platforms
- EtherNet/IP scanner and adapter networks
- FactoryTalk HMI and SCADA systems
