Siemens 6EP1961-3BA21

Brand: Siemens
Model: 6EP1961-3BA21

Siemens 6EP1961-3BA21

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Product features

An excellent SITOP PSE202U redundancy module that is essential to industrial automation systems is the Siemens 6EP1961-3BA21. This module, a dependable product from Siemens, a top industrial technology brand, is made to increase the dependability of 24V DC power supplies for vital equipment. The Siemens 6EP1961-3BA21's maximum output current of 40A is achieved by combining it with two compatible 24V DC power supplies, each of which can deliver up to 20A. This makes it ideal for powering critical industrial devices.

With a fixed 24V DC output and an input voltage range of 24 to 28.8V DC, the Siemens 6EP1961-3BA21 ensures steady power for your automation setup. Redundancy protection is its primary function; in the event that one of the connected power supplies fails, the module automatically switches to the second one. This guarantees that your industrial machinery won't abruptly stop operating, which is essential for production lines and factories that require continuous operation. You can quickly check the status of the Siemens 6EP1961-3BA21 thanks to its clear LED indicators, which are red for fault alerts and green for normal operation (both input voltages are above the threshold).

Siemens 6EP1961-3BA21's DIN rail mounting design (fits 35×7.5 mm or 35×15 mm rails) makes installation simple. It can also be positioned side by side with other modules to conserve space. It fits in tight industrial control cabinets because of its small size (70 mm × 125 mm × 120 mm) and light weight (0.4 kg). Because of its IP20 protection rating, the module is safe from dust and small objects in industrial settings.

Specifications

Model	6EP1961-3BA21
Product Name	SITOP PSE202U Redundancy Module
Country of Origin	Austria
Rated Input Voltage	24 V DC
Maximum Input Current	40 A
Power Loss	34 W
Mounting Method	DIN rail (35×7.5/15 mm)
Dimensions (W×H×D)	70 mm × 125 mm × 120 mm

Application scenarios

Automotive production lines are one important use for Siemens 6EP1961-3BA21. Robots, welding equipment, and control panels are essential to the efficient operation of auto factories. These devices might not function if one power source fails, which would result in expensive delays. This issue is resolved by Siemens 6EP1961-3BA21, which automatically switches to the backup power source when the primary one fails. It is a crucial 24V DC redundancy module for automotive plants because it guarantees uninterrupted operation of welding operations, part assembly, and quality control systems.

Facilities that process food and beverages are another significant use case. These factories work around the clock to process fresh food, sort snacks, and package drinks. Stable power is essential for machinery such as temperature controllers, packaging machines, and conveyor belts. Production won't stop even if one power source fails thanks to the Siemens 6EP1961-3BA21's reliable 24V DC output (with an input range of 24-28.8V DC) and redundancy protection. Siemens 6EP1961-3BA21 is a useful tool for food industry automation because it prevents food waste and maintains delivery schedules.

FAQ

Q: What is the Siemens 6EP1961-3BA21, and what is its primary function?

A: A modular industrial power supply from the well-known SITOP PSU8600 series is the Siemens 6EP1961-3BA21. Converting a 3-phase 400–500V AC input into a steady 24V DC output-the standard voltage for powering a variety of industrial automation devices, including PLCs, drives, sensors, and HMIs-is its main purpose. It is highly regarded for its sophisticated features and high dependability, which enable intricate and vital automation systems.

Q: Can the 6EP1961-3BA21 be integrated into a networked industrial environment?

A: Of course. One important distinction is the integrated PROFINET interface. It enables smooth integration with Siemens' engineering framework for the TIA Portal (Totally Integrated Automation). This connection allows you to remotely monitor and control the power supply, as well as receive diagnostic alerts, switch outputs on or off remotely, and access real-time data on parameters like output current and voltage for each channel. This is essential for streamlining operations and putting predictive maintenance strategies into practice.

Q: What should I check if the module's fault indicator LED lights up?

A: A lit fault LED does not always mean the SITOP PSU8600 module itself has failed. The first step is to check the input power sources . Using a multimeter, verify that the voltage at both IN24-1 and IN24-2 terminals (relative to GND) is within the acceptable range, typically 20V to 25V DC . If the voltage on one of the inputs is outside this range (e.g., too low or missing), the issue likely lies with that external power source rather than the 6EP1961-3BA21 module.