Siemens 6AG1931-2FC21-7AA0 SIPLUS PS DC UPS 40 A Uninterruptible Power Supply
Siemens 6AG1931-2FC21-7AA0 SIPLUS PS DC UPS 40 A Uninterruptible Power Supply
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Brand:Siemens Item No.:6AG1931-2FC21-7AA0 Product Origin: Germany Product Dimensions:13.5 × 15.0 × 11.0 cm Product Weight:1.078 kg Payment:T/T, Western Union, Credit Card Goods_stock:15 Shipping Port:Xiamen, China Lead Time:1-3 Days Condition:Brand New And Original Warranty:1 Year Certificate:COO
The Siemens 6AG1931-2FC21-7AA0 is a SIPLUS PS DC UPS module designed to provide battery-backed 24 V DC power for industrial automation systems. It is based on the 6EP1931-2FC21 and provides a rated output current of 40 A.
The module accepts a 22–29 V DC input and maintains the 24 V DC supply during buffering operation by using connected rechargeable batteries. The buffer response voltage can be adjusted according to the requirements of the connected power system, while selectable charging-current settings support different battery configurations.
The SIPLUS version incorporates conformal coating and supports operation from -25 °C to +70 °C. It uses screw terminals and can be mounted on an EN 60715 DIN rail, making it suitable for installation in industrial control cabinets.
Technical Specifications
Parameter
Specification
Brand
Siemens
SIPLUS Order Number
6AG1931-2FC21-7AA0
Standard Base Product
6EP1931-2FC21
Product Type
SIPLUS PS DC UPS module 24 V/40 A
UPS Type
Uninterruptible DC power supply without interface
Rated Supply Voltage
24 V DC
Input Voltage Range
22–29 V DC
Input Current at Rated Supply
Approx. 40 A, plus approx. 2.6 A with empty battery
Rated Output Voltage
24 V DC
Rated Output Current
40 A
Peak Output Current
Approx. 42 A
Buffering Energy Storage
Rechargeable batteries
Buffer Response Voltage
22–25.5 V DC, adjustable in 0.5 V increments
Preset Response Voltage
22.5 V DC
Charging Current
1 A or 2 A
Typical Efficiency
Approx. 97.2%
Typical Power Loss at Rated Load
Approx. 28.6 W
Protection Class
IP20
Electrical Connection
Screw terminals
Mounting
DIN rail EN 60715 35 × 7.5/15
Conformal Coating
Yes
Operating Temperature
-25 °C to +70 °C
Dimensions (L × W × H)
Approx. 13.5 × 15.0 × 11.0 cm
Net Weight
Approx. 1.078 kg
Recommended Companion Models
Model
Product Name
6EP1931-2FC21
Siemens SITOP DC UPS 24 V/40 A Module
6EP1935-6MG01
Siemens SITOP BAT 24 V/20 Ah Battery Module
6EP1935-6MF01
Siemens SITOP BAT 24 V/12 Ah Battery Module
6EP1935-6MD11
Siemens SITOP BAT 24 V/7 Ah Battery Module
Frequently Selected Alternatives
Model
Product Name
6AG1931-2EC21-2AA0
Siemens SIPLUS PS DC UPS 24 V/15 A Module
6EP1931-2DC21
Siemens SITOP DC UPS 24 V/6 A Module
6EP1931-2EC21
Siemens SITOP DC UPS 24 V/15 A Module
6AG1931-2DC21-2AA0
Siemens SIPLUS PS DC UPS 24 V/6 A Module
Where It Fits in Industrial Applications
• Designed for industrial automation systems requiring uninterrupted 24 V DC power during temporary supply interruptions.
• Provides battery-backed buffering for connected 24 V DC control and automation loads.
• Suitable for PLC systems, industrial controllers, instrumentation, and other automation equipment requiring continuous DC power.
• Based on the Siemens 6EP1931-2FC21 SITOP DC UPS module with SIPLUS conformal coating.
• Intended for demanding industrial environments with an operating temperature range of -25 °C to +70 °C.
Key Strengths at a Glance
• Provides a rated 24 V DC output current of 40 A for high-current automation loads.
• Accepts a 22–29 V DC input range for flexible integration with industrial 24 V DC power systems.
• Supports battery-based buffering to bridge temporary interruptions of the primary DC supply.
• Provides adjustable buffer connection response voltage from 22 V to 25.5 V in 0.5 V increments.
• Supports selectable battery charging currents of 1 A and 2 A.
• Conformal coating enhances suitability for demanding industrial operating conditions.
• DIN-rail mounting and screw-te
rminal connections support practical control-cabinet installation.
Technical FAQs
1. What is Siemens 6AG1931-2FC21-7AA0?
6AG1931-2FC21-7AA0 is a SIPLUS PS DC UPS module providing 24 V DC at up to 40 A, based on the Siemens 6EP1931-2FC21.
2. What is the main function of this DC UPS module?
The module provides uninterrupted 24 V DC power to connected loads by buffering the DC supply with a connected rechargeable battery system when the primary supply is interrupted.
3. What input voltage does the module accept?
The specified DC input voltage range is 22 to 29 V DC, with 24 V DC as the rated supply voltage.
4. What is the rated output current?
The rated output current is 40 A, suitable for higher-current 24 V DC industrial automation loads.
5. Does the module require a battery?
Yes. The DC UPS is designed to operate with batteries as the energy-storage system for mains power interruption buffering.
6. Can the buffer response voltage be adjusted?
Yes. The response voltage for buffer connection can be adjusted from 22 V to 25.5 V in 0.5 V increments, with 22.5 V as the preset value.
7. What battery charging currents are available?
The charging current can be configured to 1 A or 2 A depending on the connected battery arrangement and application requirements.
8. How is the module installed?
The unit snaps onto an EN 60715 35 × 7.5/15 DIN rail and uses screw terminals for its electrical connections.
9. What environmental features does the SIPLUS version provide?
The module has conformal coating and is specified for an operating temperature range of -25 °C to +70 °C with natural convection in the horizontal mounting position.
10. What should be verified before ordering this module?
The 24 V DC supply capacity, 40 A load requirement, compatible battery module, required buffering time, charging-current setting, and available DIN-rail space should be verified before installation.
