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- Allen Bradley
- 1791-24A8
- Block I/O Module
- USA
- 176.5 x 98 x 110.5 mm
- 0.85 kg
- Xiamen, China
- New & In Stock
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- 1 Year
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Global Logistics
We have a 10-year logistics and express cooperation agreement, so our products can be shipped to any place in the world.
Brand new and original
Our products are imported in bulk from the place of origin. Because of the cooperative relationship, our products are all original and 100% new.
24-hour service
We provide 7*24 hours service to our customers. We will be there whenever you need us.
Price advantage
All our products are priced very favorably because we have our own warehouse and supply.
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Product Overview
The Allen Bradley 1791-24A8 is a Block I/O Module designed for distributed digital I/O control in industrial automation systems. With dimensions of 176.5 × 98 × 110.5 mm and a weight of 0.85 kg, it provides a robust, high-capacity solution for managing both input and output signals from field devices. This module is compatible with Allen Bradley Block I/O racks and enables modular, scalable automation architectures, supporting reliable control and monitoring of industrial processes.
Technical Specifications
| Parameter | Details |
|---|---|
| Manufacturer | Allen Bradley |
| Model | 1791-24A8 |
| Product Type | Block I/O Module |
| Dimensions | 176.5 × 98 × 110.5 mm |
| Weight | 0.85 kg |
| Module Type | Digital I/O (Input/Output) |
| Number of Channels | 24 channels (digital) |
| Output/Input Type | Sinking or sourcing (depending on configuration) |
| Mounting | Block I/O rack |
| Environmental Rating | Industrial-grade, suitable for harsh conditions |
| Compatibility | Allen Bradley Block I/O racks and controllers |
Function and Working Principle
The 1791-24A8 functions by:
- Receiving digital input and output signals from field devices
- Transmitting input status to the PLC/controller and executing output commands
- Providing 24 digital channels for precise control and monitoring
- Integrating into distributed Block I/O systems to expand I/O capacity
It acts as a critical interface for field devices, ensuring accurate and reliable communication between sensors, actuators, and the control system.
Role in Industrial Automation
This module is used to:
- Control and monitor field devices such as relays, actuators, and sensors
- Expand digital I/O capacity within distributed automation networks
- Support modular and scalable system design
- Ensure reliable operation under industrial conditions
Industrial Applications
- Factory and process automation
- Distributed I/O networks for large machinery
- Remote monitoring and control of industrial equipment
- Integration into modular Allen Bradley Block I/O systems
Installation and Usage
- Mount the 1791-24A8 in an Allen Bradley Block I/O rack
- Connect the input and output wiring to sensors, actuators, or relays
- Configure the module using PLC or controller software
- Test all channels to verify correct signal operation
- Ensure proper power supply and environmental conditions for stable performance
Its modular design allows easy installation, maintenance, and future expansion.
Compatible System Components
- Allen Bradley Block I/O racks
- Allen Bradley PLCs and controllers
- Field devices such as sensors, actuators, relays, and indicators
- Other Block I/O input/output modules
Recommended Alternative Models
| Model | Type | Key Feature | Application |
|---|---|---|---|
| 1791-24A8 | Block I/O Module | 24 digital channels | Standard high-capacity I/O control |
| 1791-16BC | Block I/O Module | 16 channels | Robust industrial digital output module |
| 1791-32B0 | Block I/O Module | 32 channels | Higher-capacity digital input/output applications |
Key Advantages
- 24 digital channels for flexible control and monitoring
- Robust 176.5 × 98 × 110.5 mm design
- Moderate weight (0.85 kg) for easy handling
- Industrial-grade durability for harsh environments
- Modular construction allows scalable system expansion
Technical FAQs
What is the primary function?
To control and monitor 24 digital channels for actuators, relays, and sensors in distributed Block I/O systems.
Which systems is it compatible with?
Compatible with Allen Bradley Block I/O racks and PLC controllers.
Can it operate in harsh industrial environments?
Yes, it is industrial-grade, suitable for dust, vibration, and temperature extremes.
How many channels does it provide?
It provides 24 digital channels for input and/or output.
Conclusion
The Allen Bradley 1791-24A8 Block I/O Module is a reliable, high-capacity solution for distributed digital I/O control in industrial automation systems. Its 24-channel capability, modular design, and industrial-grade construction make it ideal for scalable, flexible, and dependable control and monitoring of industrial processes.