Siemens debuts Sitop PSU6200 line of rugged power supplies

November 16, 2018 – Siemens is bringing the Sitop PSU6200 line of rugged power supplies to market, offering functions for targeted diagnostics, fast assembly and reliable operation.

The single-phase 12 V and 24 V power supply units have a wide-range input for alternating voltage, which enables the connection to direct voltage and is particularly resistant to undervoltage and overvoltage. The high effectiveness of up to 95 per cent and the efficient heat dissipation through the metal enclosure keep the heat generation low. The compact power supply units can be arranged in a space-saving manner without lateral installation clearances to other devices. Typical applications include standard machine, control cabinet and system construction in the automotive, textile, food and beverage and pharmaceuticals industries, as well as in the field of renewable energies.

The power supply units from 10 amps inform users about the status of the device and the operating state. The diagnostics monitor indicates by means of LEDs whether the output voltage is correct, how high the load is and whether the end of its service life is approaching. In addition, via the diagnostics interface, users receive information about voltage and current values, the temperature status and the number of undervoltages and overvoltages at the output. Only one digital input of a controller (PLC) is required for the diagnostics.

The single-phase power supply units are available in different power classes with rated output currents from 1.3 to 20 A. The variants from 3.7 A also feature power reserves (“extra power”), which secure the power supply for up to five seconds, even in the event of 50 per cent overload. The constant current behaviour limits the current in the event of higher overloads and maintains the output voltage for as long as possible. In this way, even brief short-circuits can be detected. The rugged devices continuously supply 20 per cent more than their rated current, even at ambient temperatures of up to 45 degrees Celsius.

The Sitop PSU6200 product family is suitable for customers with high technical requirements. For example, the devices already comply today with the EMC standard, which will only become binding for the DC output from 2020. Users can expand the power supply units with Sitop add-on modules – for example, with redundancy and selectivity modules – in order to improve the reliability even further. Devices can also be expanded to form an uninterruptible 24 V power supply (DC UPS).