Overview
The Allen-Bradley 1756-OA16 is a ControlLogix 16-point digital AC output module from Rockwell Automation, designed for industrial automation and motion control applications. This 1756-OA16 module delivers 16 output channels organized into two mechanically fused groups of eight outputs each. Operating at 74–265V AC (50/60 Hz), it provides reliable digital control for solenoids, motors, contactors, and other AC-powered devices in manufacturing, process control, and discrete automation systems.
Key Features
- 16 digital output channels in two mechanically fused groups (8 outputs per group)
- AC voltage operation: 74–265V AC nominal 120/240V AC at 50/60 Hz
- Single-slot 1756 chassis mounting with flexible slot placement
- Output delay time: 9.3 ms @ 60 Hz and 11 ms @ 50 Hz (both ON-to-OFF and OFF-to-ON)
- Configurable fault modes per point: Hold Last State, On, or Off (default Off)
- Built-in status LED indicators for output and communication health
Technical Specifications
- Output Channels: 16 points (two 8-point groups, mechanically fused)
- Output Voltage: 74–265V AC; nominal 120/240V AC
- Frequency: 50/60 Hz
- Output Current: 4 Amps maximum per module at 30°C; 0.5 A max per point at 60°C
- Backplane Current: 400 mA @ 5.1V DC; 2 mA @ 24V DC
- Power Dissipation: 6.5 Watts @ 60°C; 2.1 Watts backplane rating
- Response Time: 9.3 milliseconds @ 60 Hz
- Operating Temperature: 0 to 60°C
- Terminal Blocks: 1756-TBCH or 1756-TBSH (removable terminal block required)
- Isolation Voltage: 50V continuous (basic insulation)
- Mounting: Single-slot 1756 chassis mount (any slot position)
- Certifications: UL Listed, CSA Certified, CE, CCC, RCM, NRTL, Marine, KC
Typical Applications
- Industrial motor and pump control systems
- Solenoid valve and actuator switching
- Process automation and manufacturing equipment
- HVAC and compressed air system control
- Food & beverage processing automation
- Discrete control in packaging and assembly lines
Compatibility & Replacements
Compatible With
- ControlLogix 1756 chassis (1756-A4, 1756-A7, 1756-A10, 1756-A13, 1756-A17)
- All ControlLogix processors (1756-L series, 1756-L7, 1756-L8, etc.)
- Local, remote I/O racks with 1756 communication adapters
- Studio 5000 and RSLogix 5000 programming software
- EtherNet/IP and 1756 network architectures
Replaces / Drop-In Replacement For
- Legacy ControlLogix systems using earlier 1756-OA16 models
- Systems requiring 16-point AC output expansion
- Verify compatibility with your system integrator before ordering.
Works With
- Studio 5000 and RSLogix 5000 programming environments
- EtherNet/IP protocol
- ControlLogix CompactLogix architecture
- 1756 Communication Modules for remote I/O configurations
- Allen-Bradley DH+ and EtherNet/IP networks
