AB 1769-L23E-QBFC1B Controller with Integrated High-Speed Counter

Availability: 99 left in stock

Product Overview The Allen-Bradley 1769-L23E-QBFC1B functions as an all-in-one "packaged" controller solution within the CompactLogix family. This high-performance processor integrates digital I/O,...

SKU: 1769-L23E-QBFC1B

Manufacturer: Allen Bradley
Product No.: 1769-L23E-QBFC1B
Product Type: Packaged Controllers
Product Origin: USA
Payment:T/T, Western Union
Weight: 450g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

Product Overview

The Allen-Bradley 1769-L23E-QBFC1B functions as an all-in-one "packaged" controller solution within the CompactLogix family. This high-performance processor integrates digital I/O, analog I/O, and high-speed counting capabilities into a single chassis, eliminating the need for multiple separate expansion modules in mid-sized machine applications. It provides native Ethernet/IP connectivity for seamless integration into enterprise-level networks. We supply this unit as 100% Brand New original hardware, ensuring total reliability for your mission-critical automation sequences.

Technical Specifications

The 1769-L23E-QBFC1B architecture combines high-speed logic execution with versatile signal handling in a compact form factor.

Parameter	Specification Detail
Manufacturer	Allen-Bradley / Rockwell Automation
Catalog Number	1769-L23E-QBFC1B
User Memory	512 KB
Digital Inputs	16 Points (24V DC Sink/Source)
Digital Outputs	16 Points (24V DC Source)
Analog Inputs	4 Channels (Voltage/Current)
Analog Outputs	2 Channels (Voltage/Current)
High-Speed Counters	6 Inputs / 4 Outputs
Communication	1 Ethernet/IP Port, 1 RS-232 Port
Expansion Limit	Supports up to 2 additional 1769 modules
Power Supply	Integrated 24V DC

Engineering Advantages

The 1769-L23E-QBFC1B solves the challenge of complex system design by consolidating several specialized control functions into one pre-configured package.

All-In-One Functional Density: This controller integrates digital, analog, and high-speed counter circuitry. This consolidation drastically reduces the physical footprint in your control cabinet and minimizes the complexity of your I/O configuration.
Integrated Motion Capability: With 6 high-speed counter inputs and 4 high-speed outputs, this unit handles high-resolution encoder feedback and pulse-train outputs (PTO) directly. This allows for precise position and velocity control without the expense of a dedicated motion module.
Versatile Analog Interfacing: The 4 onboard analog inputs and 2 analog outputs support both voltage and current signals. This flexibility allows you to monitor pressure transducers and command variable frequency drives (VFDs) without purchasing additional expansion cards.
Deterministic Ethernet/IP Communication: The built-in Ethernet port facilitates high-speed peer-to-peer data exchange and HMI connectivity. It supports the Common Industrial Protocol (CIP), ensuring reliable communication across your factory floor.
Simplified Expansion Logic: While the base unit provides extensive I/O, the controller still supports up to two additional 1769 Compact I/O modules (such as the 1769-IR6 for RTD inputs or the 1769-ECR end cap). This enables specific scaling for temperature monitoring or specialized communication requirements.

FAQs

Does this controller require a separate power supply?

The 1769-L23E-QBFC1B features an integrated power supply. You simply connect a 24V DC source directly to the unit to power the CPU and the embedded I/O.
What expansion modules are compatible with this "L2" controller?

This controller supports up to two 1769 Compact I/O modules. Common additions include the 1769-IR6 for thermal resistance measurement and the 1769-ECR right-end cap, which is required to terminate the 1769 backplane bus.
Can I use the RS-232 port for peer-to-peer networking?

Yes. The RS-232 port supports DF1, DH-485, and ASCII protocols. It serves as a vital interface for legacy barcode scanners, printers, or legacy PLC-5/SLC 500 communication.
What is the significance of the 12/03/2015 discontinued date?

While Rockwell Automation designated this model for discontinuation in late 2015, we provide 100% Brand New units from stock to support existing machine designs and "like-for-like" replacements, avoiding the high cost of a full system migration to the 5370 or 5380 platforms.

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.