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Allen-Bradley CompactLogix 5370 L2 1769-L24ER-QB1B 750 KB DI/O Controller | Original New

Allen-Bradley CompactLogix 5370 L2 1769-L24ER-QB1B 750 KB DI/O Controller | Original New

ALLEN-BRADLEY | CompactLogix 5370 L2

1769-L24ER-QB1B

CompactLogix 750 KB DI/O Controller

KEY CONFIGURATION

LEAD TIME: In stock

WARRANTY: 1 year

Email Inquiry [email protected]

WhatsApp +86 18159889985

Appurtenance:

Overview
Technical Data
Inquiry
Features
Interfaces
Installation
Environment
FAQ
Recommend Models
Recommended Products

Official Identification

Allen-Bradley CompactLogix 5370 L2 1769-L24ER-QB1B. CompactLogix 5370 L2 controller with embedded digital I/O.

Exact Configuration

Engineering Reference

Dimensions: 115 x 118 x 105 mm (W x H x D). Approximate weight: 0.63 kg (1.39 lb). Series A; lifecycle status: Mature.

Official Documentation

Rockwell Automation product profile 1769-PP011A-EN-E, pages 1-2; the exact controller selection table is on page 2. Open official PDF

Technical Data

Complete model	1769-L24ER-QB1B
Product family	CompactLogix 5370 L2
Product type	L2 controller with embedded digital I/O
Dimensions	115 x 118 x 105 mm (W x H x D)
Weight	0.63 kg (1.39 lb) approximate
Supply voltage	Embedded 24 V DC input power supply
User memory	750 KB
Local expansion	Up to 4 1769 Compact I/O modules
Embedded inputs	16 DC digital inputs
Embedded outputs	16 DC digital outputs
Ethernet interfaces	2 EtherNet/IP ports with Device Level Ring capability
EtherNet/IP nodes	8
TCP connections	120
USB interface	1 port
Removable storage	1 GB SD card supplied; supports up to 2 GB
Integrated motion	Not included
Series	A
Lifecycle status	Mature
Certifications	ABS; UL Listed; China CCC; CE; IECEx; UL Listed Hazardous Locations; ATEX; Australian RCM; Korean KC; UKCA; UKEX; Morocco Declaration of Conformity; ODVA

Inquiry

CONTACT

STELLA

Email Inquiry [email protected]

WhatsApp +86 18159889985

Features

L2 Controller Platform

Combines 750 KB controller memory, embedded digital I/O and an integrated 24 V DC power input. The compact format supports space-conscious machine and equipment designs.

Embedded Digital I/O

Provides 16 DC inputs and 16 DC outputs for direct connection of discrete field signals. The exact QB1B configuration does not include the analog and high-speed counter channels of QBFC variants.

Compact I/O Expansion

Supports up to four local 1769 Compact I/O modules for additional functions. Module count, current demand and bus arrangement should be checked as one complete assembly.

Removable Storage

Ships with a 1 GB SD card and supports media up to 2 GB. The SD card enables controlled application backup, transfer and recovery.

Interfaces

Dual EtherNet/IP Ports

Two DLR-capable Ethernet ports support network communications and resilient ring topologies. The controller supports eight EtherNet/IP nodes and 120 TCP connections.

Digital Field Channels

Sixteen DC inputs and sixteen DC outputs are integrated into the controller. Verify channel voltage, commons, load current and external protection for the connected devices.

USB Service Port

One USB port supports local service and commissioning access. It should be used according to the Rockwell Automation controller documentation.

SD and Compact Bus

The SD card interface supports program media, while the 1769 bus supports up to four local Compact I/O modules. Both interfaces must be included in the engineering bill of materials.

Installation

Panel Space

Reserve the 115 x 118 x 105 mm controller envelope plus room for up to four Compact I/O modules and wiring ducts. Maintain service access to Ethernet, USB and SD interfaces.

24 V DC Power

Connect the embedded 24 V DC input power supply with suitable protection and grounding. Verify the power budget for the controller, embedded I/O and attached 1769 modules.

Ethernet Design

Plan the two Ethernet ports for a validated linear or DLR network. Confirm the eight-node controller limit and the required 120 TCP connections before commissioning.

Hardware Verification

Before loading a project, confirm Series A, 750 KB memory, the QB1B digital-only I/O configuration and the exact catalog number on the product label.

Environment

Industrial Enclosure

Install the controller and Compact I/O assembly in a suitable industrial enclosure. Protect the equipment from conductive contamination, excessive moisture and mechanical damage.

Heat Management

Provide required spacing and ventilation around the controller and its local expansion modules. Include heat from output loads, power components and adjacent devices in the panel calculation.

EMC Practices

Separate Ethernet and low-voltage I/O wiring from high-energy conductors where practical. Apply grounding, shielding and cable-routing practices appropriate to the installation.

Approval Review

Official certifications include ABS, UL, CCC, CE, IECEx, ATEX, RCM, KC, UKCA, UKEX, Morocco DoC and ODVA. Confirm that the physical label and installation conditions meet the project requirement.

FAQ

Q1. How can I confirm a quoted unit is exactly 1769-L24ER-QB1B?

A. Verify the complete catalog number, Series A marking, 750 KB memory, 16 DC inputs, 16 DC outputs, dual DLR Ethernet ports and absence of the analog and high-speed counter channels found on QBFC variants.

Q2. How can I identify new, used or refurbished condition?

A. Request current close-ups of the catalog label, digital I/O terminals, Ethernet ports, USB port, SD card area and 1769 expansion connector. Scratched terminals, dust, repaired housings or missing media can indicate prior use.

Q3. How should supplier legitimacy be checked?

A. Confirm the supplier legal entity, registration, address, payment beneficiary and traceable quotation that names 1769-L24ER-QB1B. Validate serial-number evidence and document the offered condition.

Q4. What specifications must engineering review before purchase?

A. Check 115 x 118 x 105 mm dimensions, 0.63 kg weight, embedded 24 V DC power, 750 KB memory, 16 DI and 16 DO, four-module expansion, eight EtherNet/IP nodes and 120 TCP connections.

Q5. What evidence should be required before payment?

A. Request timestamped photos or video of the exact label, Series A, both Ethernet ports, digital I/O terminals, USB and SD interfaces, expansion connector and packaging. The quoted serial should match the supplied evidence.

Q6. Can a QBFC or other L2 suffix be substituted?

A. Only after engineering review. QBFC variants add analog I/O and high-speed counters and use a wider enclosure, while motion variants change node and axis capabilities. Project hardware and software must match the replacement.

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