Allen-Bradley 1756-L72 ControlLogix 5570 4 MB Controller

Only 2 item(s) left in stock

Manufacturer: Allen-Bradley
Product No.: 1756-L72
Country of origin:United States
Product Type: ControlLogix 5570 Controller
Barcode: 8537101190
Payment: T/T, Western Union
Weight: 250g
Dimensions: 35 x 145 x 140 mm (W x H x D)
Shipping port: Xiamen
Warranty: 12 months

Description

The 1756-L72 is a ControlLogix 5570 controller for logic execution, I/O coordination, motion control, and system communication. It provides 4 MB of user memory and 0.98 MB of dedicated I/O memory.

The controller processes local and remote I/O through the ControlLogix chassis and installed communication modules. It supports digital, analog, specialty, and motion modules without integrated onboard I/O.

A front-panel USB port provides temporary programming, configuration, firmware update, and online editing access. The controller has no embedded industrial network port. Network communication requires a compatible module installed in the local chassis.

Nonvolatile storage uses a removable Secure Digital card. A capacitor-based energy storage module supports memory retention and WallClockTime operation without a replaceable lithium battery.

Features

ControlLogix 5570 architecture for coordinated logic, I/O, and motion applications
Continuous, periodic, and event task execution
Relay ladder, structured text, function block, and sequential function chart programming
Communication through modular ControlLogix network interfaces
Controller redundancy support
Integrated motion support through EtherNet/IP, SERCOS, and analog motion interfaces
Secure Digital project storage and automatic fault-data capture
Capacitor-based energy storage instead of battery-backed memory
Four-character scrolling status display
RUN, FORCE, SD, and OK status indicators
Double Data Rate backplane communication with supported modules

Applications

Machine and production line control
Process control systems
Distributed I/O coordination
Integrated motion applications
Material handling systems
Packaging and assembly equipment
Controller redundancy systems
Plant-wide communication architectures
Supervisory control and data acquisition
Multi-controller automation systems

Ordering Information

Parameter	Information
Catalog Number	1756-L72
Unique Product Identifier	1756-L72
UPC	612598876020
Product Description	ControlLogix 5570 Controller with 4 MB Memory
Estimated Lead Time	5 days
Lifecycle Status	Active Mature
Country of Origin	Multiple countries, based on manufacturing location

Included Components

Catalog Number	Description
1756-ESMCAP	Capacitor-based energy storage module, installed
1784-SD1	1 GB Secure Digital card, installed
1747-KY	Controller key

Technical Specifications

General and Memory

Parameter	Specification
Brand	Allen-Bradley
Catalog Number	1756-L72
Controller Family	ControlLogix 5570
Product Type	Programmable Automation Controller
User Memory	4 MB
I/O Memory	0.98 MB
Nonvolatile Storage	1 GB Secure Digital card
Installed SD Card	1784-SD1
Embedded Network Port	None
Status Display	Four-character scrolling display
Status Indicators	RUN, FORCE, SD, and OK

Task and Programming Capacity

Parameter	Specification
Controller Tasks	32
Task Types	Continuous, periodic, and event
Programs per Task before Version 15.01	32
Programs per Task from Version 15.01	100
Programs per Task from Version 24.00	1000
Relay Ladder Logic	Supported
Structured Text	Supported
Function Block Diagram	Supported
Sequential Function Chart	Supported

I/O and Control Capacity

Parameter	Specification
Maximum Digital I/O	128,000
Maximum Analog I/O	4,000
Maximum Total I/O	128,000
Maximum Controller Connections	500
Controller Redundancy	Full support
Integrated Motion	EtherNet/IP, SERCOS, and analog motion options
Analog Motion Interfaces	Encoder input, LDT input, and SSI input

Communication

Parameter	Specification
Built-In Communication Port	One USB port
USB Standard	USB 2.0
Connector Type	Type B receptacle
USB Communication Rate	Full speed, 12 Mbps
USB Functions	Programming, configuration, firmware updates, and online edits
EtherNet/IP	Supported through a communication module
ControlNet	Supported through a communication module
DeviceNet	Supported through a communication module
Data Highway Plus	Supported through a communication module
Remote I/O	Supported through a communication module
SERCOS	Supported through an interface module
Third-Party Networks	Supported through compatible communication modules

Energy Storage

Parameter	Specification
Standard Energy Storage Module	1756-ESMCAP
Energy Storage Type	Removable capacitor-based ESM
WallClockTime Hold-Up at 20 degC	12 days
WallClockTime Hold-Up at 40 degC	10 days
WallClockTime Hold-Up at 60 degC	7 days
Alternative ESM without WallClockTime Backup	1756-ESMNSE
Security ESM	1756-ESMNRM
Maximum Initial Charging Time	2 minutes

Backplane Power Requirements

Parameter	Specification
Current Draw at 1.2V DC	5 mA
Current Draw at 5.1V DC	800 mA
Power Dissipation	2.5 W
Thermal Dissipation	8.5 BTU/hr
Isolation Voltage	30V continuous
Isolation Type	Basic insulation, USB port-to-system
Electrical Safety Standard	IEC/UL 61010-1

Mechanical Specifications

Parameter	Specification
Approximate Weight	0.25 kg (0.55 lb)
Slot Width	1
Module Location	Chassis-based, any slot
Enclosure Type Rating	None, open-style
Temperature Code	T4

System Compatibility

Parameter	Specification
Standard Chassis	1756-A4, 1756-A7, 1756-A10, 1756-A13, and 1756-A17
Conformal-Coated Chassis	1756-A4K, 1756-A7K, 1756-A10K, 1756-A13K, and 1756-A17K
Standard AC Power Supplies	1756-PA50, 1756-PA72, and 1756-PA75 families
Standard DC Power Supplies	1756-PB50, 1756-PB72, 1756-PB75, 1756-PC75, and 1756-PH75 families
Redundant Power Supplies	1756-PA75R and 1756-PB75R families
Redundant Chassis Adapter	1756-PSCA2 or 1756-PSCA2K

Environmental Specifications

Parameter	Specification
Operating Temperature	0...60 degC
Nonoperating Temperature	-40...+85 degC
Relative Humidity	5...95%, noncondensing
Conformal Coating	No
Vibration Standard	IEC 60068-2-6
Operating Shock Standard	IEC 60068-2-27
Nonoperating Shock Standard	IEC 60068-2-27
Emissions Standard	IEC 61000-6-4
ESD Immunity	IEC 61000-4-2
Radiated RF Immunity	IEC 61000-4-3
Conducted RF Immunity	IEC 61000-4-6

Connections/Interfaces

Interface	Function
USB Type B Port	Temporary local programming, configuration, firmware update, and online editing
Secure Digital Card Slot	Stores controller projects, firmware, and diagnostic fault information
ControlLogix Backplane	Connects the controller to local I/O and communication modules
Energy Storage Module Interface	Accepts the removable capacitor-based ESM
Mode Switch	Selects Run, Remote, or Program operating modes
Status Display	Reports firmware, project, SD card, ESM, and controller fault information

The USB cable must not exceed 3.0 m and must not contain hubs. The USB port is not intended for permanent communication.

Installation Guidelines

Install the ControlLogix chassis and power supply before inserting the controller.
Mount the open-style controller inside a suitable industrial enclosure.
Observe electrostatic discharge precautions during handling.
Wear an approved grounding wrist strap.
Avoid touching connectors, pins, and internal circuit components.
Install the controller in any available compatible chassis slot.
Align the circuit board with the upper and lower chassis guides.
Slide the controller into the chassis until it snaps into place.
Verify that the controller sits flush with adjacent modules.
Remove backplane power before installation in a hazardous location.
Leave the Secure Digital card installed during normal operation.
Verify that the SD indicator is off before removing the card.
Do not insert or remove the SD card in an energized hazardous location.
Allow the ESM to finish charging before removing controller power.
Confirm that CHRG or ESM Charging is no longer displayed.
Do not use the USB port in hazardous locations.
Limit USB cable length to 3.0 m and do not use USB hubs.

Compliance and Certifications

Certifications apply when the corresponding marking appears on the product.

Certification	Specification
c-UL-us	UL Listed Industrial Control Equipment for the United States and Canada
Hazardous Locations	Class I, Division 2, Groups A, B, C, and D
CE	EU EMC Directive compliance
RCM	Australian Radiocommunications Act compliance
ATEX	II 3 G Ex ec IIC T4 Gc, UL 22 ATEX 2817X
IECEx	II 3 G Ex ec IIC T4 Gc, IECEx UL 22.0062X
UKEx	Increased safety "e", UL22UKEX2601X, Zone 2
UKCA	UK EMC, explosive atmosphere, and restricted substance regulations
KC	Korean broadcasting and communications equipment registration
CCC	CCC 2020122309111998
Electrical Safety	IEC/UL 61010-1

Key Features:

#ControlLogix #Programmable Controllers

Product Documentation

Technical Datasheet (PDF) Complete specifications and technical drawings.

How much memory does the controller provide?

The controller provides 4 MB of user memory and 0.98 MB of dedicated I/O memory.

Does the controller have an embedded network port?

No. Industrial network communication requires a compatible ControlLogix communication module installed in the chassis.

What is the USB port used for?

The USB port supports temporary local programming, configuration, firmware updates, and online edits at 12 Mbps.

Which nonvolatile memory is installed?

The controller ships with a 1 GB 1784-SD1 Secure Digital card installed.

Does the controller require a replacement battery?

No. It uses a removable 1756-ESMCAP capacitor-based energy storage module for memory retention and WallClockTime support.

Global Express Shipping

Standard Delivery: 4-6 Business Days via DHL, FedEx, and UPS.
Express Dispatch: Same-day dispatch for in-stock orders placed before 2:00 PM (GMT+8).
Worldwide Coverage: Serving over 150 countries, including rapid delivery to Saudi Arabia and UAE.

Returns & Warranty

30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
12-Month Warranty: Every industrial component is backed by our professional technical warranty.

Orders are processed and delivered Monday-Friday (excluding public holidays).

For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .

TECHNICAL SPECIFICATIONS

Color pattern	Black
Country of origin	United States
Power source	AC-powered

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Allen-Bradley 1756-L72 ControlLogix 5570 4 MB Controller