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Allen Bradley

Allen Bradley 1747-L20B SLC 500 CPU with 20K Memory

Allen Bradley 1747-L20B SLC 500 Compact Controller.

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ManufacturerAllen Bradley

Part number1747-L20B

Memory 20K Program, 16K Data

Voltage 5V DC

Series SLC 500

I/O Slots 3

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Veteran-owned

CAGE: 9NK75

20K Program Memory 16K Data Memory Compact Size Integrated Power Supply RS-232 Interface

Product description

The Allen Bradley 1747-L20B is a compact SLC 500 processor featuring 20K words of memory for program storage and 16K words for data. This unit is designed for smaller to medium-sized automation applications, offering a solid balance of performance and cost-effectiveness.

This processor is suitable for standalone machines, simple process control, or as a replacement in existing SLC 500 systems. Its robust design ensures consistent performance in various industrial environments, supporting a wide range of I/O modules.

Stanlo Automation, a veteran-owned surplus distributor, provides reliable access to the Allen Bradley 1747-L20B. Secure your automation components with confidence from our extensive inventory.

Technical specifications

Memory	20K Program, 16K Data
Voltage	5V DC
Series	SLC 500
I/O Slots	3

Common applications

Machine Control

Small Process Automation

OEM Equipment

Packaging Machines

Material Handling

Assembly Lines

Compatible systems

SLC 500 Chassis SLC 500 I/O Modules

Also known as

1747L20B Allen Bradley SLC Processor SLC 500 CPU 20K

Replaces / compatible with

This processor is a direct replacement for other SLC 500 L20 series processors and can be used in systems requiring its specific memory configuration.

Technical note

Expert tip

The 1747-L20B requires a 1747-ACN I/O power supply in addition to the main chassis power.

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Frequently asked questions

What is the memory capacity of the Allen Bradley 1747-L20B?

The Allen Bradley 1747-L20B SLC 500 processor is equipped with 20K words of memory for program storage and 16K words dedicated to data storage. This provides ample capacity for many standalone machine control applications.