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The Allen-Bradley 1756-OB16D is a high-performance 16-point diagnostic digital output module designed for the ControlLogix platform. This module provides reliable switching for 24V DC field devices, featuring advanced diagnostic capabilities to detect load conditions such as open-wire or short-circuit faults. It is engineered to integrate seamlessly into ControlLogix chassis, providing essential status monitoring and control for industrial automation processes.
| Model | 1756-OB16D |
| Output Points | 16 |
| Voltage Category | 24V DC Source |
| Operating Voltage Range | 19.2 - 30V DC |
| Max Output Current (Per Point) | 2 Amps |
| Backplane Current @ 5V | 250 mA |
| Backplane Current @ 24V | 140 mA |
| Max Power Dissipation | 3.3 Watts @ 60 degC |
The diagnostic feature allows the ControlLogix controller to monitor the health of the output circuit, specifically detecting conditions like open-circuit or short-circuit faults, which helps in reducing downtime by identifying issues at the specific point level.
Yes, the 1756-OB16D is designed for use in any standard Allen-Bradley ControlLogix I/O chassis and communicates via the ControlLogix backplane.