The Allen-Bradley 1757-BEM is a battery extension module designed specifically for ProcessLogix PLCs. It provides battery backup power to maintain critical data and settings during power outages.

Key Features and Specifications

• Battery Backup: Delivers 5mA of DC current at 3.6V. It lasts approximately 240 hours (10 days) when fully charged.
• Data Retention: Keeps critical data and settings, including program, configuration, and I/O status, during power interruptions.
• Compact Design: Features a small form factor for easy installation in a ProcessLogix rack.
• Reliable Performance: Built to endure harsh industrial environments.

Technical Specifications

• Power Supply: Requires a 3.6V DC battery
• Current Consumption: 5mA.
• Battery Life: Approximately 240 hours (10 days) at full charge.
• Operating Temperature: 0°C to 55°C (32°F to 131°F).
• Humidity: 5% to 95% non-condensing.

Applications

• Process Control: Ensures continuous operation of process control systems during power outages.
• Data Logging: Safeguards valuable data collected by the PLC.
• Safety Systems: Maintains safety system configurations and status.

Benefits

• Increased Uptime: Reduces downtime caused by power interruptions.
• Improved Data Integrity: Prevents critical data loss.
• Enhanced System Reliability: Provides a dependable backup power source.