Allen-Bradley 1746-OB16 Output Module

Description

Allen-Bradley 1746-OB16 Output Module

Product Dimensions：

The Allen-Bradley 1746-OB16 is a high-performance Digital Output Module belonging to the SLC 500 family. It is designed to interface between the SLC 500 controller and various DC output devices.

1. Product Description

The 1746-OB16 is a 16-channel discrete output module that provides sourcing (current flows out of the module) for DC loads. It operates within a chassis-based system and communicates with the SLC processor to control actuators, relays, and indicators.

2. Technical Specifications

Below are the key electrical and physical parameters for the module:

3. Product Advantages

• High Density: 16 points in a single slot allows for a compact system footprint.

• Rapid Response: With a turn-on time of 0.1ms, it is ideal for high-speed switching applications.

• Optical Isolation: Provides 1500V isolation between the backplane and the I/O circuits, protecting the CPU from electrical noise and surges.

• Status Indicators: Features LED displays on the front panel for easy troubleshooting and monitoring of each output state.

• Removable Terminal Block: Simplifies wiring and allows for module replacement without disconnecting individual wires.

4. Key Considerations & Cautions

• Sourcing Logic: This is a sourcing module. Ensure your field devices (loads) are compatible with sourcing logic (connected to the negative/common side).

• Heat Dissipation: The current capacity drops as the ambient temperature increases. Ensure proper cabinet cooling if the module is fully loaded.

• Surge Protection: For inductive loads (like solenoids or motor starters), use external surge suppressors (diodes) to prevent back-EMF from damaging the module’s transistors.

• Fusing: The module is not internally fused. It is highly recommended to add external fuses to protect the circuitry against short circuits.

5. Typical Applications

The 1746-OB16 is widely used in industrial automation environments, including:

• Solenoid Valve Control: Managing pneumatic or hydraulic actuators.

• Indicator Lights: Operating control panel lamps and stack lights.

• DC Relays: Interfacing with larger power circuits.

• DC Motors: Controlling small fractional-horsepower DC motors.

Shipping Port: Xiamen, China

Payment: Bank of Chicago, Bank of Singapore

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