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Allen Bradley 1785-LT3 PLC-5 Programmable Logic Controller

Allen Bradley 1785-LT3 PLC-5 processor for compact automation.

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ManufacturerAllen Bradley

Part number1785-LT3

Type PLC-5 Processor

Memory 32K words

I/O Points 256 (max)

Communication Ports DH+ (built-in), RS-232 (built-in)

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12-month warranty

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Worldwide delivery

US, EU, Asia, Middle East

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Veteran-owned

CAGE: 9NK75

32K word memory Compact size Built-in DH+ and RS-232 ports Robust PLC-5 platform Suitable for space-constrained applications

Product description

The Allen-Bradley 1785-LT3 is a compact PLC-5 programmable logic controller processor, offering a balance of performance and size for various automation applications. It provides the core control functions for the PLC-5 system, including program execution, I/O management, and network communication.

This processor is ideal for applications where space is limited but robust PLC-5 control is still required. It is widely used in machine control, small to medium-sized manufacturing cells, and integrated automation solutions across industries such as food and beverage, packaging, and general automation.

Stanlo Automation, a veteran-owned distributor of surplus industrial automation parts, offers the Allen-Bradley 1785-LT3. We provide reliable and cost-effective control solutions to keep your automation systems running, backed by expert support.

Technical specifications

Type	PLC-5 Processor
Memory	32K words
I/O Points	256 (max)
Communication Ports	DH+ (built-in), RS-232 (built-in)
Backplane	PLC-5

Common applications

Machine Control

Small Manufacturing Cells

Packaging Machinery

Food and Beverage Automation

General Automation

Integrated Control Solutions

Compatible systems

Allen-Bradley PLC-5 Chassis Allen-Bradley I/O Modules Devices requiring DH+ or RS-232 communication

Also known as

Allen Bradley Compact PLC-5 1785 LT3 CPU PLC-5 Compact Controller

Replaces / compatible with

The 1785-LT3 is a compact processor within the Allen-Bradley PLC-5 series, offering integrated communication ports.

Technical note

Expert tip

The 1785-LT3 requires a 1785-KA power supply module and is designed for the standard PLC-5 backplane.

What happens next?

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Frequently asked questions

Does the Allen-Bradley 1785-LT3 have built-in communication ports?

Yes, the Allen-Bradley 1785-LT3 features built-in communication ports, typically including Data Highway Plus (DH+) and RS-232. This integration simplifies connectivity for programming and networking in compact PLC-5 systems.