Allen-Bradley

Allen-Bradley 1771-IN PLC-5 Digital AC/DC Input Module

SKU 1771-IN

In stock
  • 12-month warranty
  • Free returns within 30 days
  • Manufacturer: Allen-Bradley
  • Product No.: 1771-IN
  • Origin United States
  • Product Type: Digital Input Module
  • Payment: T/T, Western Union
  • Weight: 0.45 kg
  • Dimensions: 18.7 x 3.1 x 20.4 cm
  • Shipping port: Xiamen
  • Warranty: 12 months

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Product Description

Description

The Allen-Bradley 1771-IN is a digital AC/DC input module designed for use within the classic PLC-5 and 1771 I/O platform architecture. This module provides an essential interface between industrial automation controllers and various discrete pilot devices such as pushbuttons, limit switches, and auxiliary contacts. It translates field-level sensor signals into controller-compatible data, ensuring reliable monitoring of industrial machinery and discrete processes.

Operating status is easily monitored directly from the front panel via integrated LED indicators, which display the real-time ON or OFF condition of each individual input channel. Power for internal module operations is drawn directly from the 1771 I/O chassis backplane, simplifying system wiring and reducing external power supply requirements.

Features

  • Compatible with Allen-Bradley PLC-5 programmable controllers and standard 1771 I/O chassis
  • Interfaces directly with standard on/off industrial control devices
  • Front-panel status indicators provide visual feedback of individual input states
  • Backplane-powered design eliminates the need for auxiliary module power supplies
  • Robust modular construction suited for standard industrial environments

Applications

  • Discrete manufacturing and assembly lines
  • Conveyor and material handling systems
  • Pumping stations and water treatment facilities
  • Legacy PLC-5 system expansions and maintenance replacements

Technical Specifications

Parameter Specification
Manufacturer Allen-Bradley / Rockwell Automation
Catalog Number 1771-IN
Product Type Digital AC/DC Input Module
Compatible Chassis 1771 I/O Chassis
Compatible Controller Family PLC-5
Operating Voltage 12 to 28V AC/DC
Backplane Current Draw 80 mA
Maximum AC Off-State Current 2.8 mA
Signal Delay (ON or OFF) 18 ms (+/- 10 ms) typical
Mounting Type Chassis Rack Mount
Country of Origin United States

Installation Guidelines

Ensure all power to the 1771 I/O chassis is disconnected before inserting or removing the 1771-IN module. Align the circuit board carefully with the chassis backplane guide rails of the designated slot and push firmly to seat the edge connector. Secure the module using the top and bottom retaining latches. Verify that field wiring is terminated securely to the associated 1771 swing-arm RTB (Removable Terminal Block) before restoring power to the system.

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 controller series is the Allen-Bradley 1771-IN designed for?
The 1771-IN module is designed for use with Allen-Bradley PLC-5 programmable controllers utilizing the 1771 I/O chassis architecture.
What is the operating voltage range of the 1771-IN module?
The module operates within a voltage range of 12 to 28V AC or DC.
How does the module receive power?
Power for internal circuitry is drawn directly from the 1771 I/O chassis backplane, eliminating the need for an external power supply.
How can I check the status of individual inputs?
The module features front-panel LED indicator lights that provide real-time visual status of the ON or OFF condition for each input channel.
Is the 1771-IN hot-swappable?
As with standard legacy 1771 hardware, it is recommended to remove system power from the chassis before inserting or removing I/O modules to prevent electrical arcing or damage.
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1771-IN

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Allen-Bradley 1771-IN PLC-5 Digital AC/DC Input Module

Only 17 item(s) left in stock
  • Manufacturer: Allen-Bradley

  • Product No.: 1771-IN

  • Country of origin:United States

  • Product Type: Digital Input Module

  • Payment: T/T, Western Union

  • Weight: 450g

  • Dimensions: 18.7 x 3.1 x 20.4 cm

  • Shipping port: Xiamen

  • Warranty: 12 months

Quantity
View full details

Product Description

Description

The Allen-Bradley 1771-IN is a digital AC/DC input module designed for use within the classic PLC-5 and 1771 I/O platform architecture. This module provides an essential interface between industrial automation controllers and various discrete pilot devices such as pushbuttons, limit switches, and auxiliary contacts. It translates field-level sensor signals into controller-compatible data, ensuring reliable monitoring of industrial machinery and discrete processes.

Operating status is easily monitored directly from the front panel via integrated LED indicators, which display the real-time ON or OFF condition of each individual input channel. Power for internal module operations is drawn directly from the 1771 I/O chassis backplane, simplifying system wiring and reducing external power supply requirements.

Features

  • Compatible with Allen-Bradley PLC-5 programmable controllers and standard 1771 I/O chassis
  • Interfaces directly with standard on/off industrial control devices
  • Front-panel status indicators provide visual feedback of individual input states
  • Backplane-powered design eliminates the need for auxiliary module power supplies
  • Robust modular construction suited for standard industrial environments

Applications

  • Discrete manufacturing and assembly lines
  • Conveyor and material handling systems
  • Pumping stations and water treatment facilities
  • Legacy PLC-5 system expansions and maintenance replacements

Technical Specifications

Parameter Specification
Manufacturer Allen-Bradley / Rockwell Automation
Catalog Number 1771-IN
Product Type Digital AC/DC Input Module
Compatible Chassis 1771 I/O Chassis
Compatible Controller Family PLC-5
Operating Voltage 12 to 28V AC/DC
Backplane Current Draw 80 mA
Maximum AC Off-State Current 2.8 mA
Signal Delay (ON or OFF) 18 ms (+/- 10 ms) typical
Mounting Type Chassis Rack Mount
Country of Origin United States

Installation Guidelines

Ensure all power to the 1771 I/O chassis is disconnected before inserting or removing the 1771-IN module. Align the circuit board carefully with the chassis backplane guide rails of the designated slot and push firmly to seat the edge connector. Secure the module using the top and bottom retaining latches. Verify that field wiring is terminated securely to the associated 1771 swing-arm RTB (Removable Terminal Block) before restoring power to the system.

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What controller series is the Allen-Bradley 1771-IN designed for?

The 1771-IN module is designed for use with Allen-Bradley PLC-5 programmable controllers utilizing the 1771 I/O chassis architecture.

What is the operating voltage range of the 1771-IN module?

The module operates within a voltage range of 12 to 28V AC or DC.

How does the module receive power?

Power for internal circuitry is drawn directly from the 1771 I/O chassis backplane, eliminating the need for an external power supply.

How can I check the status of individual inputs?

The module features front-panel LED indicator lights that provide real-time visual status of the ON or OFF condition for each input channel.

Is the 1771-IN hot-swappable?

As with standard legacy 1771 hardware, it is recommended to remove system power from the chassis before inserting or removing I/O modules to prevent electrical arcing or damage.

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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