Here are some key features of the 6EP1931-2DC21 power supply module:

Output Voltage: 24 V DC

Input Voltage: 22.8 - 28.8 V DC

Output Current: 20 A

Power Output: 480 W

Battery Type: Lead Acid

Battery Capacity: 2.3 Ah

Backup Time: Typically 20-40 minutes at 70% load

DIN rail mountable

Integrated signaling contact for reporting system states

LED display for status indication

The primary function of this module is to provide backup power in case of a power failure or interruption to ensure the continuous operation of the connected Siemens automation devices. It is commonly used in industrial applications where uninterrupted power is critical for maintaining system functionality and preventing data loss or equipment damage caused by power outages.