Allen-Bradley

Allen-Bradley 1771-ALX PLC-5 Local I/O Adapter Module

SKU 1771-ALX

Disponibile
  • 12-month warranty
  • Free returns within 30 days
  • Manufacturer: Allen-Bradley
  • Product No.: 1771-ALX
  • Origin United States
  • Product Type: PLC-5 Adapter Module
  • Payment: T/T, Western Union
  • Weight: 1.0 kg
  • Shipping port: Xiamen
  • Warranty: 12 months

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Product Description

Description

The Allen-Bradley 1771-ALX is a PLC-5 local I/O adapter module engineered to interface local I/O chassis within a 1771 I/O architecture. Designed for installation in the leftmost slot of an I/O chassis, this module manages communication across the local I/O bus and allows individual racks to be disconnected without requiring a complete system shutdown. Its hot-disconnect capability ensures that interconnect cables can be removed for maintenance without disrupting bus communication to downstream chassis in the system.

The module features onboard configuration switches that must be matched with backplane settings for the specific application. It supports standard interconnect cabling options—such as the 1771-CX1, 1771-CX2, and 1771-CX5 cables—and requires the 1771-CXT terminator plug on the final adapter of the bus chain. Operating reliably within standard industrial automation environments, the 1771-ALX provides robust backplane management for legacy PLC-5 control systems.

Features

  • Designed for placement in the leftmost slot of a 1771 I/O chassis
  • Enables disconnection of an individual I/O rack from the bus without shutting down the entire system
  • Supports daisy-chaining up to 16 local I/O adapters on the communication bus
  • Compatible with standard 1771 interconnect cables (1771-CX1, 1771-CX2, 1771-CX5)
  • Requires Cat. No. 1771-CXT terminator plug on the final adapter in the bus sequence
  • Configurable via integrated module switches matching backplane requirements
  • Compatible with all Allen-Bradley 1771 external or slot power supplies

Applications

  • Legacy Allen-Bradley PLC-5 industrial control systems
  • Distributed local I/O chassis architectures
  • Manufacturing and process automation lines requiring modular rack isolation
  • Industrial plant retrofits and maintenance upgrades

Technical Specifications

Parameter Specification
Manufacturer Allen-Bradley
Product Type Local I/O Adapter Module
Product Family PLC-5 (1771 I/O)
Catalog Number 1771-ALX
Backplane Current Draw 1.2A at 5VDC
Power Dissipation 5.7 to 6.3W
Thermal Dissipation 19.44 to 21.48 BTU/hr
Max Chassis Distance 98.4 cable-feet (30 meters cumulative bus length)
Compatible Interconnect Cables 1771-CX1 (1m), 1771-CX2 (2m), 1771-CX5 (5m)
Bus Terminator Cat. No. 1771-CXT
Module Chassis Location Left-most slot of 1771 I/O chassis
Keying Positions Upper connector: between 54 and 56; Lower connector: between 4 and 6
Country of Origin United States

Connections / Interfaces

The 1771-ALX module features physical ports for interconnect cabling to link adjacent 1771 I/O chassis. Front-panel connections accommodate standard 1771 series multi-conductor communication cables. Switch blocks on the module must be precisely configured to match chassis rack addressing and communication parameters.

Installation Guidelines

  • Ensure all system power to the chassis is turned off before installing or removing the 1771-ALX module, unless performing authorized hot-disconnect procedures on isolated cabling.
  • Install the adapter strictly in the leftmost slot of the designated 1771 I/O chassis.
  • Verify that physical keying on the module connectors matches the backplane slot keying to prevent incorrect module insertion.
  • Set the onboard configuration switches to correspond with your specific PLC-5 system architecture and rack addressing layout.
  • Ensure the final adapter on the bus is properly terminated using the 1771-CXT terminator plug.
Shipping & Returns

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.

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 technical warranty.
FAQ
What is the primary function of the Allen-Bradley 1771-ALX PLC-5 Local I/O Adapter Module?
The Allen-Bradley 1771-ALX is engineered to interface local I/O chassis within a 1771 I/O architecture. Designed for installation in the leftmost slot of an I/O chassis, this module manages communication across the local I/O bus. It allows individual racks to be disconnected without requiring a complete system shutdown, ensuring high availability during maintenance.
How does the hot-disconnect feature of the Allen-Bradley 1771-ALX operate?
The Allen-Bradley 1771-ALX features a hot-disconnect capability that ensures interconnect cables can be removed for maintenance without disrupting bus communication to downstream chassis in the system. This allows technicians to service specific parts of the industrial automation network independently. Proper safety guidelines and system power states must still be observed during physical maintenance procedures.
What cabling and termination accessories are required for the Allen-Bradley 1771-ALX?
The Allen-Bradley 1771-ALX supports standard interconnect cabling options such as the 1771-CX1, 1771-CX2, and 1771-CX5 cables to link adjacent chassis. Additionally, it requires the 1771-CXT terminator plug installed on the final adapter of the bus chain. These components ensure signal integrity across a cumulative bus length of up to 98.4 cable-feet.
What are the power requirements and specifications for the Allen-Bradley 1771-ALX?
The Allen-Bradley 1771-ALX draws a backplane current of 1.2A at 5VDC during standard operation. It exhibits a power dissipation ranging from 5.7 to 6.3 watts, resulting in a thermal dissipation of 19.44 to 21.48 BTU/hr. These electrical parameters must be factored into the overall power budget of the 1771 I/O chassis.
How is the Allen-Bradley 1771-ALX configured during installation?
The Allen-Bradley 1771-ALX features onboard configuration switches that must be matched with backplane settings for the specific application. Installers must place the module strictly in the leftmost slot of the designated 1771 I/O chassis. Verifying physical keying and correct switch addresses ensures proper communication within legacy PLC-5 control systems.
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Allen-Bradley 1771-ALX PLC-5 Local I/O Adapter Module

Only 14 item(s) left in stock
  • Manufacturer: Allen-Bradley

  • Product No.: 1771-ALX

  • Country of origin:United States

  • Product Type: PLC-5 Adapter Module

  • Payment: T/T, Western Union

  • Weight: 1000g

  • Shipping port: Xiamen

  • Warranty: 12 months

Quantità
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Product Description

Description

The Allen-Bradley 1771-ALX is a PLC-5 local I/O adapter module engineered to interface local I/O chassis within a 1771 I/O architecture. Designed for installation in the leftmost slot of an I/O chassis, this module manages communication across the local I/O bus and allows individual racks to be disconnected without requiring a complete system shutdown. Its hot-disconnect capability ensures that interconnect cables can be removed for maintenance without disrupting bus communication to downstream chassis in the system.

The module features onboard configuration switches that must be matched with backplane settings for the specific application. It supports standard interconnect cabling options—such as the 1771-CX1, 1771-CX2, and 1771-CX5 cables—and requires the 1771-CXT terminator plug on the final adapter of the bus chain. Operating reliably within standard industrial automation environments, the 1771-ALX provides robust backplane management for legacy PLC-5 control systems.

Features

  • Designed for placement in the leftmost slot of a 1771 I/O chassis
  • Enables disconnection of an individual I/O rack from the bus without shutting down the entire system
  • Supports daisy-chaining up to 16 local I/O adapters on the communication bus
  • Compatible with standard 1771 interconnect cables (1771-CX1, 1771-CX2, 1771-CX5)
  • Requires Cat. No. 1771-CXT terminator plug on the final adapter in the bus sequence
  • Configurable via integrated module switches matching backplane requirements
  • Compatible with all Allen-Bradley 1771 external or slot power supplies

Applications

  • Legacy Allen-Bradley PLC-5 industrial control systems
  • Distributed local I/O chassis architectures
  • Manufacturing and process automation lines requiring modular rack isolation
  • Industrial plant retrofits and maintenance upgrades

Technical Specifications

Parameter Specification
Manufacturer Allen-Bradley
Product Type Local I/O Adapter Module
Product Family PLC-5 (1771 I/O)
Catalog Number 1771-ALX
Backplane Current Draw 1.2A at 5VDC
Power Dissipation 5.7 to 6.3W
Thermal Dissipation 19.44 to 21.48 BTU/hr
Max Chassis Distance 98.4 cable-feet (30 meters cumulative bus length)
Compatible Interconnect Cables 1771-CX1 (1m), 1771-CX2 (2m), 1771-CX5 (5m)
Bus Terminator Cat. No. 1771-CXT
Module Chassis Location Left-most slot of 1771 I/O chassis
Keying Positions Upper connector: between 54 and 56; Lower connector: between 4 and 6
Country of Origin United States

Connections / Interfaces

The 1771-ALX module features physical ports for interconnect cabling to link adjacent 1771 I/O chassis. Front-panel connections accommodate standard 1771 series multi-conductor communication cables. Switch blocks on the module must be precisely configured to match chassis rack addressing and communication parameters.

Installation Guidelines

  • Ensure all system power to the chassis is turned off before installing or removing the 1771-ALX module, unless performing authorized hot-disconnect procedures on isolated cabling.
  • Install the adapter strictly in the leftmost slot of the designated 1771 I/O chassis.
  • Verify that physical keying on the module connectors matches the backplane slot keying to prevent incorrect module insertion.
  • Set the onboard configuration switches to correspond with your specific PLC-5 system architecture and rack addressing layout.
  • Ensure the final adapter on the bus is properly terminated using the 1771-CXT terminator plug.
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What is the primary function of the Allen-Bradley 1771-ALX PLC-5 Local I/O Adapter Module?

The Allen-Bradley 1771-ALX is engineered to interface local I/O chassis within a 1771 I/O architecture. Designed for installation in the leftmost slot of an I/O chassis, this module manages communication across the local I/O bus. It allows individual racks to be disconnected without requiring a complete system shutdown, ensuring high availability during maintenance.

How does the hot-disconnect feature of the Allen-Bradley 1771-ALX operate?

The Allen-Bradley 1771-ALX features a hot-disconnect capability that ensures interconnect cables can be removed for maintenance without disrupting bus communication to downstream chassis in the system. This allows technicians to service specific parts of the industrial automation network independently. Proper safety guidelines and system power states must still be observed during physical maintenance procedures.

What cabling and termination accessories are required for the Allen-Bradley 1771-ALX?

The Allen-Bradley 1771-ALX supports standard interconnect cabling options such as the 1771-CX1, 1771-CX2, and 1771-CX5 cables to link adjacent chassis. Additionally, it requires the 1771-CXT terminator plug installed on the final adapter of the bus chain. These components ensure signal integrity across a cumulative bus length of up to 98.4 cable-feet.

What are the power requirements and specifications for the Allen-Bradley 1771-ALX?

The Allen-Bradley 1771-ALX draws a backplane current of 1.2A at 5VDC during standard operation. It exhibits a power dissipation ranging from 5.7 to 6.3 watts, resulting in a thermal dissipation of 19.44 to 21.48 BTU/hr. These electrical parameters must be factored into the overall power budget of the 1771 I/O chassis.

How is the Allen-Bradley 1771-ALX configured during installation?

The Allen-Bradley 1771-ALX features onboard configuration switches that must be matched with backplane settings for the specific application. Installers must place the module strictly in the leftmost slot of the designated 1771 I/O chassis. Verifying physical keying and correct switch addresses ensures proper communication within legacy PLC-5 control systems.

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

Country of origin
United States

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