Allen Bradley 1734-OB4 Digital Output Module

Product Introduction

The Allen-Bradley 1734-OB4 Digital Output Module is a DC sourcing output module designed for use in Point I/O systems. It provides four NPN sourcing 24V DC outputs for controlling small actuators, relays, or indicator devices.

This module is optimized for distributed control applications where multiple digital outputs are needed, and module-level electronic protection is required. It integrates with the POINTBus interface and supports DIN rail or panel-mounted installations, providing reliable operation in industrial environments.

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Product Specifications

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Applications

● Distributed control systems
Provides four DC sourcing outputs for controlling actuators, relays, or indicator devices in Point I/O networks.

● Industrial automation
Used where multiple digital outputs are required for machine or process control.

● Panel and DIN rail installations
Flexible mounting allows use in industrial control cabinets or localized control points.

● System expansion
Adds multiple digital output channels to existing Point I/O systems without rewiring.

● Small actuator and indicator control
Drives standard 24V DC devices reliably in distributed automation setups.

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Advantages

● Multiple output channels
Four DC outputs allow independent control of several devices from a single module.

● Reliable NPN sourcing outputs
Provides stable and predictable 24V DC switching for industrial devices.

● Robust electrical protection
Module-level protection prevents overcurrent and short-circuit damage.

● Flexible integration
Compatible with POINTBus interface and standard Point I/O networks.

● Industrial-grade operation
Operates reliably under -20 °C to 55 °C and up to 95% relative humidity.

● Compact and modular
Facilitates distributed control architectures and easy system expansion.

FAQ

1. What is the main function of this module?
It provides four 24V DC sourcing outputs to control actuators, relays, or indicator lamps in a Point I/O system.

2. How many digital outputs does it provide?
The module offers 4 independent outputs for controlling multiple devices simultaneously.

3. What type of outputs are used?
It uses NPN sourcing DC outputs, delivering positive voltage to connected devices.

4. What voltage range do the outputs support?
Each output operates between 10 and 28.8V DC, compatible with standard small DC devices.

5. What is the maximum current per output?
Each output can supply up to 1 A, allowing reliable operation of typical actuators and indicators.

6. What is the total current capacity of the module?
The module can handle up to 3 A total, supporting all four outputs at full load.

7. Can it be integrated into distributed control systems?
Yes, it integrates with POINTBus backplanes for placing outputs near field devices and reducing wiring complexity.

8. How does it ensure safe operation?
The module includes electronic protection against overcurrent and short circuits for each output.

9. Is it compatible with other Point I/O modules?
Yes, it seamlessly works with other modules in Point I/O networks for flexible distributed control.

10. What environmental conditions are supported?
It operates reliably in temperatures from -20 °C to 55 °C and up to 95% relative humidity in industrial settings.

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