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- Allen Bradley
- 1791D-8B8P
- Compactblock I/O Combination Dock
- USA
- 150 x 38 x 48 mm
- 0.18 kg
- Xiamen, China
- New & In Stock
- T/T, PayPal, Western Union
- 1 Year
- 1-3 Working Days
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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 1791D-8B8P is a CompactBlock I/O Combination Dock designed for integrated digital input and output control in distributed automation systems. With dimensions of 150 × 38 × 48 mm and a weight of 0.18 kg, this module offers a compact, lightweight, and versatile solution for applications requiring both input monitoring and output control. It is fully compatible with Allen Bradley CompactBlock I/O racks, providing a modular and scalable platform for industrial automation.
Technical Specifications
| Parameter | Details |
|---|---|
| Manufacturer | Allen Bradley |
| Model | 1791D-8B8P |
| Product Type | CompactBlock I/O Combination Dock |
| Dimensions | 150 × 38 × 48 mm |
| Weight | 0.18 kg |
| Module Type | Digital Input/Output Combination |
| Number of Channels | 8 input / 8 output channels |
| Input/Output Type | Sinking or sourcing (configurable) |
| Mounting | CompactBlock I/O rack |
| Environmental Rating | Industrial-grade, suitable for harsh conditions |
| Compatibility | Allen Bradley CompactBlock I/O racks and controllers |
Function and Working Principle
The 1791D-8B8P operates by:
- Receiving digital input signals from sensors, switches, or other field devices
- Transmitting input status to a PLC or controller
- Activating output devices such as actuators, relays, or indicators
- Providing 8 discrete input channels and 8 output channels for combined monitoring and control
- Integrating into CompactBlock I/O systems for flexible, modular expansion
This module functions as a versatile interface between control systems and field devices, allowing simultaneous input acquisition and output control in a compact form factor.
Role in Industrial Automation
The 1791D-8B8P is used to:
- Monitor field device inputs and control outputs in one module
- Expand both input and output capacity in CompactBlock I/O networks
- Support modular and scalable system architectures
- Provide reliable combined input/output operation in industrial environments
Industrial Applications
- Factory and process automation
- Distributed I/O systems with mixed input/output needs
- Remote monitoring and control of industrial devices
- Integration into modular CompactBlock I/O networks
Installation and Usage
- Mount the 1791D-8B8P in a CompactBlock I/O rack
- Connect input wiring from sensors or field devices and output wiring to relays or actuators
- Configure the module through PLC or controller software
- Test all input and output channels for proper operation
- Ensure stable power supply and environmental conditions
Its compact and modular design allows easy installation, maintenance, and system expansion.
Compatible System Components
- Allen Bradley CompactBlock I/O racks
- Allen Bradley PLCs and controllers
- Field devices such as sensors, actuators, relays, and indicators
- Other CompactBlock I/O modules
Recommended Alternative Models
| Model | Type | Key Feature | Application |
|---|---|---|---|
| 1791D-8B8P | CompactBlock I/O Combination Dock | 8 input + 8 output channels | Mixed I/O applications |
| 1791D-0B16P | CompactBlock I/O Output Module | 16 output channels | Output control only |
| 1791D-16B0 | CompactBlock I/O Input Module | 16 input channels | Input monitoring only |
Key Advantages
- 8 input and 8 output channels for versatile control and monitoring
- Compact 150 × 38 × 48 mm design
- Lightweight module at 0.18 kg
- Industrial-grade durability for harsh environments
- Modular design allows flexible system expansion
Technical FAQs
What is the primary function?
To acquire 8 digital input signals and control 8 digital outputs for field devices in automation systems.
Which systems is it compatible with?
Compatible with Allen Bradley CompactBlock I/O racks and PLC controllers.
Can it operate in harsh industrial environments?
Yes, it is industrial-grade, suitable for vibration, dust, and temperature extremes.
How many channels does it provide?
It provides 8 digital input channels and 8 digital output channels.
Conclusion
The Allen Bradley 1791D-8B8P CompactBlock I/O Combination Dock is a compact, versatile, and reliable solution for digital input and output control in distributed automation systems. Its 8+8 channel capacity, modular design, and industrial-grade construction make it ideal for scalable, flexible, and dependable industrial control networks.