Description
The Siemens 6EP1931-2FC21 is a high-performance SITOP DC UPS module designed to provide reliable backup power for 24 V DC systems. Engineered for industrial environments, this module bridges power supply interruptions by utilizing external battery modules, ensuring that critical automation processes remain operational during grid fluctuations or failures. This specific model is a robust, base-version unit configured without integrated communication interfaces.
Features
- Delivers 40 A output current for demanding 24 V DC applications.
- Designed for standard DIN rail mounting to facilitate easy integration into control cabinets.
- Ensures high operational reliability through continuous monitoring of readiness.
- Supports seamless transition to buffering mode during input voltage drops.
- Engineered for industrial automation systems requiring high uptime and protection against power loss.
Applications
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Industrial PCs (IPCs): Prevents data loss and system corruption by providing stable backup power during outages.
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Packaging and Bottling Lines: Maintains control over conveyor systems and filling mechanisms to prevent production waste.
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Critical Monitoring Systems: Ensures continuous operation of sensors and controllers in water treatment and chemical processing facilities.
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Safety Infrastructure: Powers diagnostic sensors and safety controls, such as those found in wind turbine systems, during grid instability.
Technical Specifications
| Product Model |
6EP1931-2FC21 |
| Input Voltage Range |
22 to 29 V DC |
| Output Current |
40 A |
| Peak Current |
42 A |
| Buffering Mode Output |
19 to 28.5 V DC |
| Active Power (Typical) |
960 W |
| Charging Current |
1 A / 2 A |
| Mounting |
DIN Rail (EN 60715) |
Installation Guidelines
- Mount the module vertically within a control cabinet on a standard 35 mm DIN rail.
- Maintain a minimum clearance of 50 mm above and below the unit to allow for adequate natural convection cooling.
- Use a cable cross-section of at least 10 mm² for the L+ input connection to safely accommodate the 40 A load.
- Verify correct polarity when connecting external battery modules to prevent damage to internal circuitry or fuses.
- Ensure the power supply is disconnected before performing any wiring or maintenance tasks.
FAQ
What is the primary function of the 6EP1931-2FC21?
This module acts as a DC uninterruptible power supply, bridging power failures by switching to an external battery source to maintain a stable 24 V DC output for critical loads.
Does this model include communication ports?
No, the 6EP1931-2FC21 is a standard version without built-in USB or fieldbus communication interfaces.
What is the input voltage requirement?
The unit is designed for a 24 V DC nominal input, with an operational range between 22 V and 29 V DC.
