Logix Architecture Controller New | Allen-Bradley 1794-L34

Availability: 20 left in stock

Product Overview The Allen-Bradley 1794-L34 functions as a high-performance, modular processor within the FLEXLogix family. It bridges the gap between centralized control...

SKU: 1794-L34

Manufacturer: Allen Bradley
Product No.: 1794-L34
Product Type: FLEX I/O Systems
Product Origin: USA
Payment:T/T, Western Union
Weight: 770g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

Product Overview

The Allen-Bradley 1794-L34 functions as a high-performance, modular processor within the FLEXLogix family. It bridges the gap between centralized control and distributed I/O by embedding the powerful Logix control engine directly into a FLEX I/O hardware profile. This controller manages up to 1,000 I/O points, making it the premier choice for remote process skids, modular packaging machines, and distributed automation cells. We supply this unit as 100% Brand New and Original, providing a compact yet robust CPU solution that eliminates the need for a full-sized chassis in space-constrained environments.

Technical Specifications

Specification	Technical Details
Controller Type	FLEXLogix Distributed Processor
User Memory	512 KB (Standard Logix Engine)
Input Voltage	24V DC Nominal (19.2–31.2V DC Range)
Input Current	0.85A @ 24V DC Maximum
Flexbus Current Output	653mA @ 5.1V DC Maximum
Power Dissipation	20.4W @ 24V DC; 25.5W @ 19.2V DC
Thermal Dissipation	87 BTU/hour
Isolation Voltage	30V DC (Tested at 850V DC for 60s)
Programming Software	RSLogix 5000 / Studio 5000
Communication Ports	Integrated RS-232 Serial Port
Product Net Weight	0.77 kg (1.69 lbs)
Shipping Weight	2.50 kg (Includes protective logistics packaging)

Engineering Advantages

Integrated Logix Engine Capability: The 1794-L34 executes the same common instruction set found in ControlLogix and CompactLogix systems. This allows engineers to reuse code across different hardware platforms, drastically reducing development time and commissioning risks.
Chassis-Free Scalability: Unlike traditional PLCs, the 1794-L34 mounts directly onto a DIN rail and connects to FLEX I/O modules via the 1794-CE1 or 1794-CE3 cables. This architecture creates a "distributed brain" that lives on the machine, reducing long wiring runs and expensive enclosures.
Optimized for Remote Skids: The compact form factor and 24V DC power requirement make this controller ideal for OEM skids and modular equipment. It handles local logic processing, ensuring that the skid continues to operate safely even if communication with the supervisory PLC experiences an interruption.
High-Bandwidth Local I/O: The built-in Flexbus delivers up to 653mA of current to local I/O modules. This allows a single 1794-L34 to power and control multiple analog and digital modules simultaneously without requiring an additional bus power supply in many configurations.

FAQs

What software do I need to program the 1794-L34?

You program the 1794-L34 using RSLogix 5000 (or older versions of Studio 5000). Because it belongs to the Logix family, it supports tag-based programming and User-Defined Data Types (UDTs), providing a much more modern programming environment than the older SLC 500 or PLC-5 systems.

Does the 1794-L34 support EtherNet/IP communication?

The 1794-L34 includes a built-in RS-232 port for point-to-point communication. To connect the controller to an EtherNet/IP, ControlNet, or DeviceNet network, you must install the corresponding 1794 communication daughtercard or adapter module. This modularity allows you to change the network protocol without replacing the main controller.

How many I/O modules can I connect directly to one 1794-L34?

While the system supports up to 1,000 I/O points, the physical limit for a local rail is typically 8 modules. If your application requires more, you can use the 1794-CE1 or 1794-CE3 extension cables to add additional FLEX I/O rows while remaining under the control of the single 1794-L34 processor.

What is the function of the lithium battery in this unit?

The 1794-L34 utilizes a replaceable lithium battery to retain the user program and tag data in the internal volatile memory (SRAM) during power-off states. We recommend checking the battery status periodically via the system tags to prevent data loss during extended shutdowns.

What's clients say about us

Excellent Emergency Support!

Our production line was down due to a faulty Bently Nevada monitor. We found it in stock here and they shipped it via DHL immediately. Back in operation within 48 hours—truly a lifesaver for our plant.

Mark Thompson

Maintenance Manager, USA

Reliable Source for New Spares

Finding brand new, original modules is critical for our safety. This team delivers factory-fresh components with full certification. Their commitment to only selling new products makes them our most trusted partner.

Robert Hoffmann

Engineering Lead, Germany

Top-tier Service and Quality

We have sourced Honeywell and Schneider parts here for two years. Every shipment arrives well-packaged with original factory seals intact. Clear communication and the best lead times in the industry.