1771-DBMEM1 Memory Module | Allen-Bradley PLC Backup, 1771 Series I/O Expansion

Allen-Bradley 1771-DBMEM1

ControlLogix memory module 16MB

1771-DBMEM1 non-volatile RAM

1771-DBMEM1

Allen-Bradley 1771-DBMEM1 ControlLogix memory module provides 16MB non-volatile RAM for reliable data storage and system configuration in industrial automation applications.

Specification

SEODescription

The Allen-Bradley 1771-DBMEM1 is a ControlLogix memory module designed to enhance system reliability with its 16MB non-volatile RAM, ensuring data retention during power loss. Integrated into the 1771 I/O chassis, it directly interfaces with other ControlLogix modules via the high-speed backplane, supporting up to 16 local I/O modules. Operating within a 5V DC voltage range and a temperature span of 0°C to 60°C, it excels in harsh industrial environments like manufacturing and process automation. Its non-volatile storage capability minimizes downtime during system reboots, while the compact design optimizes rack space. However, its limited capacity compared to modern alternatives and compatibility constraints with newer ControlLogix platforms may require careful integration planning.

SEOSpecification

Parameter	Specification
Manufacturer	Allen-Bradley
Model Number	1771-DBMEM1
Module Type	ControlLogix Memory Module
Memory Capacity	16MB
Memory Technology	Non-volatile RAM (NVRAM)
Compatibility	ControlLogix 1771 Platform
Data Retention	Battery-backed memory preservation
Interface	Backplane Bus Integration
Mounting	Chassis Slot Installation
Operating Temperature	0°C to 60°C (32°F to 140°F)
Storage Temperature	-40°C to 85°C (-40°F to 185°F)
Certification	UL, CE, cULus Listed
Weight	Approx. 0.45 kg (1 lb)
Dimensions	177mm x 135mm x 40mm (H x W x D)

SEOQandA

question:Why is there a service fee?
answer:The service fee covers transaction processing, administrative costs, and ensures secure, efficient order fulfillment.
question:What is the warranty coverage?
answer:Warranty covers manufacturing defects for a specified period. Terms vary by product; check documentation for details.
question:Why are shipping costs high? Are there cheaper options?
answer:Costs reflect carrier rates based on weight, destination, and speed. Economical options available upon request.

SEOQandA_Product

question:Why does 1771-DBMEM1 fail to communicate with PLC?
answer:Verify backplane connection, check slot addressing, and confirm configuration in PLC programming software.
question:How to resolve configuration errors in 1771-DBMEM1?
answer:Validate memory size settings, address assignments, and ensure jumper settings match application requirements.
question:What causes data corruption in 1771-DBMEM1?
answer:Check for electrical noise interference, ground loops, or voltage spikes. Use shielded cables and proper grounding.
question:Why does 1771-DBMEM1 show unstable power indicators?
answer:Test power supply output (must be 5VDC ±5%), ensure backplane current capacity meets module requirements.
question:How to troubleshoot failed firmware updates on 1771-DBMEM1?
answer:Use approved programming tools, verify compatible firmware version, and maintain stable power during update process.