Key facts
- Brand
- Siemens
- Model
- 6EP1931-2EC21
- Category
- AC-DC Power
- Industry
- Industrial
- Documents
- 2
- Languages
- DE
- Last added
- 2012-04-09
Start here
6EP1931-2EC21/6EP1931-2EC31/6EP1931-2EC42 Manual
The SITOP DC‑USV‑Module 15 is a chassis‑mountable UPS module for DIN‑rail installation. It provides backup power for 24 V DC loads up to 15 A by switching to a connected battery module when the supply voltage falls below a configurable cut‑in threshold. The manual describes safe handling, installation, wiring, and configuration of the module and its battery modules.
Key functions include adjustable cut‑in threshold, end‑of‑charge voltage, charging current, and buffering time via DIP switches, as well as status indication through LEDs and optional serial or USB interfaces for remote monitoring. This manual is written in German.
Siemens 6EP1931-2EC21 specifications
| Input nominal voltage | 24 V DC |
|---|---|
| Maximum input current (battery charged) | 16.0 A DC |
| Maximum input current (battery discharged) | 15.1 A DC |
| Maximum battery current in buffer operation | 15.1 A DC |
| Standby current draw from battery | ≈ 0.30 mA |
All Siemens 6EP1931-2EC21 documents by type
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Questions answered in these manuals
Who is allowed to work on or around this equipment?
Only properly qualified personnel may work on or near the equipment.
What is the input voltage range for the SITOP DC‑USV module?
The module is designed for a nominal input of 24 V DC with an operating range of 22 V to 29 V DC.
How is the battery cut‑in threshold adjusted?
The cut‑in threshold is set with three DIP switches, adjustable from 22.0 V to 25.5 V in 0.5 V steps.