Description

The Siemens 6EP1931-2FC21 is a SITOP DC UPS module designed to provide a reliable 24 V DC/40 A output during power failures. This module is engineered for integration with SITOP power supplies and external battery modules to ensure continuous operation of critical industrial processes. This specific model is a basic version without integrated communication interfaces, focusing on robust power buffering and operational readiness.

Features

• 24 V DC / 40 A output capacity
• Input voltage range: 22 V to 29 V DC
• Standard DIN rail mounting (EN 60715)
• High reliability with monitoring of operational readiness
• Designed for bridging power failures in industrial control systems
• Compact design for control cabinet installation

Applications

• Bottling and Packaging Plants: Maintains conveyor and filling control during power dips to prevent waste and mechanical jams.
• Cranes and Hoists: Keeps safety control systems active during power loss for safe load positioning.
• Industrial PCs (IPCs): Provides backup power to prevent data corruption and improper shutdowns.
• Chemical and Water Treatment Plants: Ensures constant power for monitoring critical pressure, temperature, and chemical levels.
• Wind Power Turbines: Powers obstruction lighting and diagnostic sensors during grid failures.

Technical Specifications

Installation Guidelines

• Mount the device vertically on a 35mm DIN rail (EN 60715 35x15/7.5) inside a control cabinet.
• Maintain a minimum clearance of 50 mm above and below the unit to facilitate natural convection cooling.
• Use a cable cross-section of at least 10 mm² for the 24 V DC input (L+) to safely handle the 40 A load.
• Ensure correct polarity when connecting the external battery module to prevent damage to the internal fuse.
• Always power down the system before performing wiring or maintenance on the module.

FAQs

What is the 6EP1931-2FC21?

The Siemens SITOP 6EP1931-2FC21 is a 24 V DC/40 A uninterruptible power supply (UPS) module designed for bridging power failures. It is a basic model without communication interfaces for PC monitoring.

What is the input/output voltage?

The module operates with a 24 V DC nominal input and provides a 24 V DC output, with a buffering mode output range of 19 to 28.5 V DC.

Does this unit have communication interfaces?

No, this specific model (6EP1931-2FC21) does not include USB or other communication interfaces.