6EP1931-2FC21 Overview

The Siemens 6EP 1931-2FC21 SITOP DC UPS MODULE is a SITOP DC UPS module providing 40A, 24VDC output with built-in battery backup and 97% efficiency to ensure uninterrupted power supply in industrial applications.

Technical Data Summary 

Power Ratings: Provides a 40A, 24VDC output with a typical active power of 960W.

Input Flexibility: Accepts a wide input voltage range of 22-29VDC.

High Efficiency: Offers up to 97.2% efficiency in normal operation for energy savings.

Battery Backup: Features built-in battery energy storage for seamless power bridging during mains failure.

Adjustable Threshold: The battery connection response voltage is adjustable from 22 to 25.5V in 0.5V steps.

Reliable Performance: Exhibits low power loss (typically 28.6W) and supports a peak output current of 42A.

FAQ

Q1: What is the rated input and output current of the 6EP1931-2FC21 UPS module?

A1: It has a rated input current of 43A and provides a stable output of 24VDC at 40A.

Q2: What is the efficiency of this DC UPS module during normal operation?

A2: It achieves a typical efficiency of 97.2% when operating at its rated output.

Q3: Can the battery backup activation voltage be adjusted?

A3: Yes, the response voltage for switching to battery mode is adjustable from 22 to 25.5 VDC in 0.5V increments.

Q4: What is the typical power loss of this module?

A4: The typical power loss is 28.6 watts under rated operating conditions.

Q5: What is the output voltage range during battery backup (buffering) mode?

A5: In buffering mode, the output voltage ranges from 19 to 28.5 VDC.