Siemens 6EP1931-2EC21 SITOP DC UPS Module 24V 15A Industrial Backup

Description

The Siemens SITOP DC UPS Module (Model: 6EP1931-2EC21) is a high-reliability 24 V DC uninterruptible power supply (UPS) controller designed for industrial automation cabinets. Operating on a nominal 24 V DC input, it delivers a continuous 15 A (360 W) regulated output to safeguard mission-critical control circuits, PLCs, industrial PCs (IPCs), HMIs, and sensor buses.

When primary AC/DC power fails or drops below the threshold, the 6EP1931-2EC21 seamlessly switches to connected 24 V battery modules without any output interruption. This bridging time allows plant automation systems to either ride through short-term power dips or execute a safe, controlled system shutdown. For automation integrators, electrical panel builders, and plant maintenance managers across Bangladesh, this Siemens unit provides robust insurance against data corruption and hardware damage caused by grid instability.

Key Features

• Uninterrupted 24 V DC Backup: Delivers 15 A continuous output in both normal line operation and battery buffer mode.
• High Operational Efficiency: Achieves up to 96.2% efficiency at rated output, minimizing heat buildup inside control panels.
• Adjustable Buffer Threshold: Features an adjustable response voltage threshold (22 V to 25.5 V DC in 0.5 V increments) for customized battery takeover.
• Integrated Battery Management: Intelligent battery charging capability (0.35 A / 0.7 A) with reverse polarity protection for energy storage modules.
• Compact DIN-Rail Housing: Space-saving 50 mm wide IP20 enclosure for tool-free mounting on standard TH35 DIN rails.

Technical Advantages

• High Efficiency: Low power dissipation (only ~14 W at full load) reduces internal cabinet cooling overhead.
• Durable Construction: Heavy-duty casing built to endure industrial vibration, shock, and demanding thermal cycles.
• Safety Protection: Built-in short-circuit protection, reverse polarity protection, and electronic overload safeguards.
• Energy Saving: High-efficiency power path limits energy losses during continuous 24/7 standby duty.
• Easy Maintenance: Front-accessible screw terminal connections simplify wiring inspection, battery testing, and routine servicing.

Applications

• Residential: Auxiliary backup power for high-end smart home automation controllers and security servers.
• Commercial: Building management systems (BMS), centralized HVAC panel controllers, and access control backup.
• Industrial: PLC racks, SCADA systems, motion controllers, and automated machine control loops.
• Factory: Textile mills, garment manufacturing lines, packaging lines, and pharmaceutical processing equipment.
• Office: Central IT control panels, server rack auxiliary monitoring units, and security hubs.
• Project Installation: Substation automation panels, OEM machine integration, and industrial control retrofits.

Why Choose This Product?

• Siemens Industrial Reliability: Precision German engineering guarantees long service life (MTBF >790,000 hours at 40 °C).
• Flawless Performance: Fast 60 ms output voltage recovery and instant buffer transfer prevent micro-stoppages.
• Cost Effectiveness: Protects expensive PLC memory cards and high-value automation equipment from brownout damage.
• After-Sales Value: Supported by loopshop.com.bd with dedicated technical assistance and fast nationwide delivery in Bangladesh.

Technical Specification Table

Features List

• ✓ High efficiency operation (~96.2%)
• ✓ 15 A continuous 24 V DC output power
• ✓ Automatic transition to battery buffering during line failure
• ✓ Short-circuit and reverse polarity protection built-in
• ✓ Compact 50 mm wide DIN-rail enclosure

Benefits For Customers

• Reduces Electricity Cost: Ultra-high 96.2% efficiency minimizes waste heat and lowers cabinet energy consumption.
• Improves Operational Reliability: Prevents PLC reboots, process interruptions, and parameter loss during brownouts.
• Saves Maintenance Cost: Protects sensitive electronic control components from voltage sags and sudden shutdown spikes.
• Suitable for Bangladesh Environment: Operates reliably from -25 °C up to +60 °C inside industrial control panels across local factories.

Installation & Maintenance Guide

Installation Requirements:

• Snap the module securely onto a standard 35 mm DIN rail (EN 60715 35×7.5/15) in a vertical position.
• Maintain at least 50 mm vertical clearance above and below the unit for natural convection cooling.
• Connect the 24 V DC main supply to the input screw terminals using suitable wire cross-sections (1 to 4 mm² / 17 to 11 AWG).
• Connect compatible Siemens 24 V external battery modules to the dedicated energy storage terminals, ensuring correct polarity.

Maintenance Tips:

• Periodically check terminal screw connections to ensure wires remain tightly clamped against machine vibration.
• Inspect connected external battery modules regularly for terminal corrosion, charge state, and aging.
• Keep top and bottom ventilation grilles free of industrial dust and lint accumulation.

Safety Instructions:

• Disconnect all primary DC power and isolate battery connections before performing wiring or maintenance.
• Installation must be conducted exclusively by qualified electrical personnel or automation technicians.
• Do not operate the unit in wet or conductive environments without a secondary protective panel enclosure (IP20 rated).

Frequently Asked Questions (FAQ)

Q: What is the price of Siemens DC UPS Module 15A 6EP1931-2EC21 in Bangladesh?

A: You can check the latest updated price for the Siemens 6EP1931-2EC21 DC UPS module directly on loopshop.com.bd or contact customer support for bulk quotation requests.

Q: Where can I buy Siemens DC UPS Module 15A 6EP1931-2EC21 in Bangladesh?

A: You can purchase genuine Siemens 6EP1931-2EC21 modules online through loopshop.com.bd with nationwide delivery across Bangladesh.

Q: What warranty does this product have?

A: Warranty terms depend on current stock and manufacturer policies. Please verify warranty details on loopshop.com.bd or contact sales before placing your order.

Q: Is this suitable for Bangladesh climate?

A: Yes, with an operating temperature tolerance of -25 °C to +60 °C, it is built to operate reliably inside industrial panels across Bangladesh.

Q: How to install this product?

A: Mount the unit on a 35 mm DIN rail inside your control panel, connect the primary 24 V DC power supply to the input terminals, wire your external battery module, and attach your 24 V DC load.

Q: Does the Siemens 6EP1931-2EC21 include an integrated battery?

A: No, this is the DC UPS control module. It requires an external 24 V Siemens battery module for energy storage.

Q: What is the rated output current of this DC UPS module?

A: The 6EP1931-2EC21 provides a continuous output current rating of 15 A at 24 V DC (360 W total capacity).

Q: Does this DC UPS module have a communication interface?

A: No, the 6EP1931-2EC21 model is the standard version without a serial/USB interface (signal contacts are provided for status monitoring).

Q: Can I adjust the voltage threshold for battery takeover?

A: Yes, the takeover threshold can be manually adjusted on the front panel between 22 V and 25.5 V DC.

Q: Is loopshop.com.bd a trusted supplier for Siemens automation parts in BD?

A: Yes, loopshop.com.bd is a leading online store in Bangladesh offering authentic industrial automation and electrical control components.