Siemens SITOP DC UPS 6EP1931-2EC31 User Manual

© Siemens AG, 2009 1/18
Considerations for Use
of the SITOP DC UPS Module
6A without interface (6EP1931-2DC21)
6A with serial interface (6EP1931-2DC31)
6A with USB interface (6EP1931-2DC42)
15A without interface (6EP1931-2EC21)
15A with serial interface (6EP1931-2EC31)
15A with USB interface (6EP1931-2EC42)
40A without interface (6EP1931-2FC21)
40A with USB interface (6EP1931-2FC42)
500S (15A / 2.5kWs capacitor) (6EP1933-2EC41)
500S (15A / 5kWs capacitor) (6EP1933-2EC51)
500P (15A / 5kWs capacitor) (6EP1933-2NC01)
500P (15A / 10kWs capacitor) (6EP1933-2NC11)
Release 2

Siemens SITOP DC UPS 6EP1931-2EC31 Specifications

General

Input Voltage	24 V DC
Output Voltage	24 V DC
Output Current	10 A
Protection Class	IP20
Rated Current	10 A
Height	125 mm
Battery Type	Lead-acid
Signaling	LED indicators

Summary

1. Principle Functions

1.1 Normal Mode

1.2 Buffer Mode

2. Settings

2.1 Setting the Cut-in Threshold

Details how to configure the voltage trigger for buffer mode.

2.2 Setting the End-of-Charge Voltage

Explains setting the charging voltage limit for batteries.

2.3 Setting the Charging Current

Describes how to set the battery charging current.

2.4 Setting the Buffering Time

Details how to configure the duration of backup power.

4. Communication with the PC

5. Operating Modes

5.1 Long Power Failure without Interface

Behavior during a long power outage without interface.

5.2 Brief Power Failure without Interface

Behavior during a short power outage without interface.

5.3 Long Power Failure with Interface

Behavior during long power outage with interface.

5.4 Brief Power Failure with Interface

6. Battery Modules

6.1 Battery Module Selection

6.3 Instructions for Battery Capacity Selection