Allen-Bradley 1771-DB PLC-5 Basic Module

Availability: 2 left in stock

DescriptionThe Allen-Bradley 1771-DB is a Basic Module designed for use within the PLC-5 programmable controller system. This module provides communication...

SKU: 1771-DB

Manufacturer: Allen-Bradley
Product No.: 1771-DB
Product Type: PLC Communication Module
Product Origin: USA
Payment:T/T, Western Union
Weight: 300g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

Description

The Allen-Bradley 1771-DB is a Basic Module designed for use within the PLC-5 programmable controller system. This module provides communication capabilities, supporting DH485, PRT1, and PRT2 protocols to facilitate data exchange between the PLC-5 and peripheral devices. Please note that this module was officially discontinued by the manufacturer on December 30, 2015.

Features

Designed for integration with the Allen-Bradley 1771 I/O chassis.
Supports multiple communication ports including DH485, PRT1, and PRT2.
Requires 0.75 Amps at 5VDC from the backplane for operation.
Compact form factor for standard 1771 chassis mounting.

Applications

This module is typically utilized in legacy PLC-5 automation environments requiring serial communication or DH485 network connectivity for HMI, programming terminals, or third-party device integration.

Technical Specifications

Manufacturer	Allen-Bradley
Model Number	1771-DB
Module Type	Basic Module
Communication Ports	DH485, PRT1, PRT2
Backplane Current Draw	0.75 Amps at 5VDC
Status	Discontinued

Installation Guidelines

Ensure the PLC-5 chassis is powered down before inserting or removing the 1771-DB module to prevent electrical damage or backplane faults.
Align the module carefully with the chassis slot guides and seat it firmly to ensure proper backplane connector engagement.
Use appropriate shielded cabling for communication ports to minimize electromagnetic interference (EMI) in industrial environments.
Maintain proper ventilation in the control cabinet to prevent heat buildup around the I/O rack.
Follow standard ESD (Electrostatic Discharge) precautions when handling the module to protect internal circuitry.

FAQ

Is the 1771-DB still available from the manufacturer?

No, the 1771-DB was discontinued by Allen-Bradley on December 30, 2015. It is now primarily available through secondary market channels.

What are the power requirements for this module?

The 1771-DB requires 0.75 Amps at 5VDC from the PLC-5 backplane.

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.

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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.

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Engineering Lead, Germany

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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.