Siemens SITOP DC UPS 6EP1931-2EC42 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 6EP1931-2EC42 Specifications

General

Brand	Siemens
Model	SITOP DC UPS 6EP1931-2EC42
Category	Control Unit
Language	English

Summary

2. Settings

2.1 Setting the Cut-in Threshold

Explains configuring the voltage level at which the UPS switches to battery mode.

2.2 Setting the End-of-Charge Voltage

Details setting battery charging termination voltage based on temperature and battery type.

2.3 Setting the Charging Current

Describes adjusting the battery charging current using DIP switches for different UPS models.

2.4 Setting the Buffering Time

Explains configuring the duration of battery backup operation using DIP switches.

3. Signaling

3.4 Alarm Messages

Covers potential alarm conditions like lack of buffer readiness and battery change required.

4. Communication with the PC (Only Devices with Serial or USB Interface)

4.1 Design of Interface

4.1.2 USB Connection

4.2 Transmit Data of the SITOP DC UPS Module

4.3 Receive Data of the SITOP DC UPS Module

4.3.2 USB Connection

5. Operating Modes

5.1 Long Power Failure in Devices without an Interface

Explains UPS behavior during a long power failure when no communication interface is used.

5.2 Brief Power Failure in Devices without an Interface

Explains UPS behavior during a brief power failure when no communication interface is used.

5.3 Long Power Failure in Devices with an Interface

5.4 Brief Power Failure in Devices with an Interface

6. Battery Modules

6.1 Battery Module Selection

6.2 Discharge Characteristics for Lead-Gel Battery Modules

6.3 Instructions for the Characteristic Field/Selection of the Battery Capacity