- Extends backup support for a compatible ProcessLogix controller arrangement
- Works with the documented battery, cable, connector, and chassis configuration
- Requires maintained diagnostics and battery-service records
1757-BEM is an Allen-Bradley ProcessLogix battery extension module for supported controller and chassis configurations.
The module supports extended memory-backup operation through the documented battery connection and monitoring functions.
Before replacement, preserve the controller project and verify the chassis, module location, battery, cable, connector, polarity, and diagnostic history.
Availability, condition, price, and shipping time for 1757-BEM are confirmed during quotation.
Allen-Bradley 1757-BEM ProcessLogix Battery Extension Module Manuals, Product Family, Links
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
- Use the 1757-BEM with a ProcessLogix 1757-PLX52 only when power to the chassis is frequently interrupted.
- Remove the 1757-PLXBAT controller battery whenever the 1757-BEM is installed.
- The rechargeable 1757-BEM maintains the 1757-PLX52 user configuration during a rack-power failure.
- Review battery-presence and battery-load test indications during maintenance
- Investigate cable, connector, polarity, and battery condition before replacing electronics
- Record diagnostic history and battery service dates for future troubleshooting
- Confirm chassis support, module location, backplane power, and connector orientation
- Inspect cable condition and polarity before reconnecting the battery extension
- Follow the approved shutdown, electrostatic-discharge, and commissioning procedure
- ProcessLogix controller installations requiring extended memory-backup support
- Industrial process systems maintaining controller data during planned power interruption
- Supported ProcessLogix chassis where battery monitoring and extension are documented