1769-L20 Allen-Bradley CompactLogix Processor Module

Availability: 99 left in stock

Product Overview The 1769-L20 is an entry-level CompactLogix controller designed for standalone machine control and small-scale automation tasks. It provides...

SKU: 1769-L20

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

Description Reviews

Product Overview

The 1769-L20 is an entry-level CompactLogix controller designed for standalone machine control and small-scale automation tasks. It provides a reliable solution for applications that do not require Ethernet connectivity, instead utilizing a dedicated RS-232 serial port for communication and programming. The controller supports modular I/O expansion, allowing a customized hardware footprint, and can be mounted on either a standard DIN rail or a flat panel.

Technical Specifications

Item	Specification
Processor Model	1769-L20
User Memory	64 KB total (combined user program and system overhead)
Battery Backup	Replaceable 1747-BA lithium battery
Serial Interface	1 × RS-232 (Channel 0), DH-485 or DF1 protocols
I/O Capacity	Up to 8 local expansion modules
Expansion Banks	Maximum 2 I/O banks (1 expansion cable)
Backplane Current Draw	600 mA @ 5 V DC; 0 mA @ 24 V DC
Status Diagnostics	LEDs for Controller Status, Channel 0, Channel 1
Dimensions (W × H × D)	50 × 87 × 118 mm
Shipping Weight	0.34 kg
Operating Temperature	0 to 60 °C (32 to 140 °F)

Hardware Installation and Mounting

The 1769-L20 is designed for industrial environments and should be installed in a clean, dry location. When configuring the system, ensure that the power supply distance rating is observed for all eight supported I/O modules. The controller features integrated locking tabs for secure DIN rail mounting; however, panel mounting is recommended in applications with higher vibration or shock requirements, where a rating of up to 30 g is supported.

Common Technical Questions

Can the 1769-L20 be used on an Ethernet network?
No. The 1769-L20 does not include a native Ethernet (RJ45) port. Communication is limited to RS-232 serial. Ethernet connectivity would require an external serial-to-Ethernet gateway or upgrading to a CompactLogix L23E or L3xER series controller.

What is the purpose of the 1747-BA battery?
The 1747-BA battery maintains power to volatile memory, ensuring retention of the user program and tag data during a power loss. Periodic replacement is recommended to avoid data loss.

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.

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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.

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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.