Allen-Bradley 1746-OB8 Series A Digital DC Output Module
The Allen-Bradley 1746-OB8 Series A is an 8-channel digital DC output module designed for the SLC 500 programmable logic controller (PLC) system. This module provides reliable and efficient control for various industrial automation applications.
Key Features
- Number of Outputs: 8 digital outputs
- Voltage Category: 24V DC signal output
- Operating Voltage Range: 10 to 50V DC (sourcing)
- Continuous Current per Point: 1.0 A at 30°C (86°F); 0.5 A at 60°C (140°F)
- Continuous Current per Module: 8.0 A at 30°C (86°F); 4.0 A at 60°C (140°F)
- Backplane Current Consumption: 135 mA at 5V DC
- Signal Delay (Resistive Load): On = 1.0 ms; Off = 1.0 ms
- Off-State Leakage Current: Maximum 1 mA
- On-State Voltage Drop: Maximum 1.2V at 1.0 A
- Surge Current per Point: 3.0 A for 10 ms
- Isolation Voltage: 1500V AC between I/O terminals and control logic
- Operating Temperature Range: 0°C to 60°C (32°F to 140°F)
- Certifications: UL-listed, CE compliant, CSA certified
Applications
The 1746-OB8 module is suitable for a wide range of industrial automation tasks, including:
- Controlling DC-powered actuators, relays, and solenoids
- Managing output signals in process control systems
- Implementing discrete output control in manufacturing environments
Installation and Compatibility
This module is designed for easy integration into the SLC 500 series chassis. It is compatible with various SLC 500 processors and can be configured using Windows programming software or a hand-held terminal (HHT).
Environmental Considerations
To ensure optimal performance and longevity, operate the 1746-OB8 module within the specified temperature range and maintain relative humidity between 5% and 95% (non-condensing). Proper storage conditions are also essential, with a recommended temperature range of -40°C to 85°C (-40°F to 185°F).
The Allen-Bradley 1746-OB8 Series A Digital DC Output Module offers robust performance and versatility, making it a valuable component in industrial automation systems.
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