Overview
The 1756-OA16 is a ControlLogix chassis-based AC digital output module from Allen-Bradley (Rockwell Automation) designed for 120/240V AC control applications. This module offers 16 outputs, which are divided into two distinct groups, each containing eight outputs. It is a ControlLogix 120/240V AC output module engineered for direct integration into ControlLogix local chassis or remote I/O via ControlNet or EtherNet/IP networks. The module provides industrial-grade output switching with built-in diagnostics, group-level fusing, and surge protection suitable for motor controls, solenoid valves, indicator lights, and AC-powered automation devices.
Key Features
- 16 output channels organized into two groups of eight
- Input voltage range of 74-265V AC, compatible with 120/240V AC at 50/60 Hz frequency
- 0.5 Amp current rating per output
- Power dissipation of 6.5 Watts at 60°C, with thermal dissipation rate of 22.17 BTU per hour for effective heat management
- Group-level internal electronic fusing to prevent overcurrent conditions
- Diagnostic indicators for output status and module health
- Chassis-slot mounting for compact integration
- Multiple certifications including CE, CCC, CSA, UL, and RCM
Technical Specifications
The 1756-OA16 operates on a flexible AC voltage input with protective range and frequency support suitable for North American and international installations:
- Backplane power draw: 400 mA at 5.1V; 2 mA at 24V
- Total backplane power rating: 2.1 Watts
- Operating temperature: 0 to 60°C
- Response time: 9.3 milliseconds
- Connection type: Tension clamp spring terminals
- Module weight: 0.55 lbs
- Mounting type: Chassis
Typical Applications
The 1756-OA16 is suited for:
- AC motor starters and soft-start controls
- Solenoid valve and pneumatic cylinder actuation
- Lighting circuits and indicator lamp control
- HVAC and equipment interlocking
- Production line automation with distributed I/O architectures
- Backup or expansion output capacity in existing ControlLogix systems
Compatibility & Replacements
Compatible With
- ControlLogix local chassis and remote chassis linked via ControlNet or EtherNet/IP networks
- RSLogix 5000 / Studio 5000 programming software
- EDS files for device integration and configuration
- 1756 series ControlLogix chassis (e.g., 1756-L series processors)
Replaces / Drop-In Replacement For
The 1756-OA16 Series A replaces earlier revisions of the 1756-OA16 module. The 1756-OA16I variant provides individually isolated outputs (1A per point) for applications requiring point-level isolation. Verify compatibility with your specific system integration requirements before ordering.
Works With
- RSLogix 5000 / Studio 5000 ladder logic environment
- Add-On Profiles (AOP) for discrete I/O module configuration
- EtherNet/IP and ControlNet communication protocols
- Remote Termination Bases (RTBs) for field wiring (ordered separately)
- Distributed I/O (DIO) systems and remote I/O racks
