Siemens 6EP1931-2EC01 DC-USV-Modul 15

Siemens SITOP power DC-USV-Modul 15, model 6EP1931-2EC01, is a 24 V DC uninterruptible power supply module with a built‑in charger for a 24 V lead‑acid battery, designed to keep critical control systems powered during brief mains outages. It accepts a 24 V DC input up to 16 A and delivers a regulated 24 V DC output rated at 15 A to the load, while recharging the battery when mains power is available. The unit is intended for integration into SITOP DC UPS configurations to support 24 V automation electronics such as PLCs and HMIs, ensuring continuity of operation and enabling orderly shutdowns when necessary. The 2EC01 variant does not include a PC serial interface; for remote monitoring via a serial link, Siemens offers other 6EP1931‑2EC3x variants (for example 6EP1931-2EC31) that include a PC‑capable serial interface. Local status indicators are provided by LEDs on the module to reflect operation and fault conditions, and the broader SITOP DC‑UPS family includes variants with additional alarm/relay options depending on revision. This module is designed to mount into compatible SITOP power supply systems and serves to sustain 24 V loads through short power disturbances while maintaining battery health and charging functionality.