Rockwell Automation 1769-L20 CompactLogix L20 Processor

Availability: 99 left in stock

Product Overview The Allen-Bradley 1769-L20 serves as a reliable, entry-level processor within the CompactLogix family, specifically engineered for standalone machine control and...

SKU: 1769-L20

Manufacturer: Allen Bradley
Product No.: 1769-L20
Product Type: RS-232 Serial Communication
Product Origin: USA
Payment:T/T, Western Union
Weight: 340g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

Product Overview

The Allen-Bradley 1769-L20 serves as a reliable, entry-level processor within the CompactLogix family, specifically engineered for standalone machine control and small-scale automation tasks. This controller executes localized logic without the overhead of complex networking hardware, utilizing a built-in RS-232 port for programming and point-to-point data exchange. We supply this unit as 100% Brand New original factory stock, providing a deterministic processing solution for legacy system maintenance and cost-sensitive industrial applications.

Technical Specifications

Feature	Specification
Catalog Number	1769-L20
User Memory	64 KB (Non-volatile battery-backed RAM)
Local I/O Capacity	Supports up to 8 local expansion modules
Expansion Banks	Maximum 2 banks (via 1769 expansion cable)
Serial Port	1 x RS-232 (DF1, DH-485, or ASCII protocols)
Backplane Current	600 mA @ 5.1V DC
Power Supply Distance	Within 4 slots of the power supply module
Battery Backup	1747-BA Replaceable Lithium Battery
Status Indicators	RUN, FORCE, BAT, I/O, and Serial LED array
Vibration Resistance	30g Shock rated (Panel Mount)
Dimensions	50 x 87 x 118 mm

Engineering Advantages

Scalable Modular Design: The 1769-L20 supports up to 8 local expansion modules, allowing you to customize the I/O mix to fit your specific machine requirements. This modularity ensures you only pay for the I/O points you actually use.
Streamlined Programming: The dedicated RS-232 port simplifies point-to-point communication. It natively supports DF1 (Full/Half-Duplex), DH-485, and ASCII protocols, facilitating easy integration with legacy HMI panels, barcode scanners, and programming laptops.
Flexible Mounting Configurations: This controller features a chassis-less design. It snaps directly onto a standard DIN rail for fast installation or mounts to a panel for maximum vibration resistance in heavy machinery environments.
Deterministic Logic Execution: The processor provides stable, predictable execution times for control loops. This reliability makes the 1769-L20 ideal for high-repetition tasks such as conveyor control, pump station management, and simple assembly workstations.
Low-Maintenance Operation: The replaceable 1747-BA battery preserves your user program and data during power cycles. Clear LED status indicators on the front panel allow for immediate troubleshooting of I/O status, battery health, and serial activity.

FAQs

How many I/O modules can the 1769-L20 handle?

The controller manages up to 8 local 1769 expansion modules. If your application exceeds one bank, you can extend the configuration to a second I/O bank using a standard expansion cable.
What is the power supply distance rating for this controller?

The 1769-L20 must sit within 4 slots of the 1769 power supply module. Exceeding this distance compromises the voltage integrity on the backplane and may cause erratic controller behavior.
Can the 1769-L20 communicate over Ethernet?

No. The 1769-L20 utilizes RS-232 serial communication only. If your application requires EtherNet/IP connectivity, consider higher-tier models such as the 1769-L32E or newer 5370 L1/L2/L3 series.
Does the module include a battery?

Yes. We provide the 1769-L20 with the standard battery required for non-volatile memory backup, ensuring your logic survives extended downtime.

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.