Efficient power for automation

What DIN rail power supplies should be capable of in industrial manufacturing

A reliable power supply is the foundation of every automation solution. The following technical article by RECOM addresses the question of which requirements power supplies must meet in industrial manufacturing. High demands such as increasingly compact control cabinets, rising ambient temperatures, shorter maintenance cycles and intelligent systems set narrow limits for conventional power supply units.

Therefore, planners and users are increasingly considering the power supply as part of the overall system – including additional functions, service life, and handling. The choice of a suitable power supply unit has a significant impact on the efficiency, availability, and safety of a system. In modern manufacturing environments, numerous technical and economic factors therefore must be considered to ensure trouble-free operation.

Power

Selection criteria for power supply units in factory automation

Stability and reliability ensure a constant output voltage even in the event of fluctuating loads or harsh environmental conditions. Protective functions such as overload, overvoltage, and short-circuit protection secure both the power supply and end devices. Efficiencies above 90 percent reduce energy losses and lower the heat generation.
Modularity and scalability are achieved through DIN rail designs, which allow for flexible expansion and easy maintenance. Certifications according to standards such as UL, CE, and RoHS are prerequisites for global use.
Remote monitoring and diagnostic functions increase system availability. For power reserves, at least 25 percent reserve should be planned in addition to the total sum of all consumers. Peak load capability is essential for these power supplies, so they must be able to handle short-term load peaks, e.g., from motors or actuators.
Harsh ambient conditions regarding temperature, humidity, vibration, and dust exposure must be considered in the design. Compact designs, tool-free assembly, and simple diagnostics shorten installation and service times. High-quality components and MTBF values of greater than 80,000 hours ensure economical operation and a long service life.
It is clear that power supply units today take on far more tasks than merely supplying power – they must combine efficiency, protection, flexibility, and diagnostic capability in one system.

The RACPRO1 series received the Red Dot Award for Product Design in 2025 – proof of the successful combination of technical innovation and appealing design. (Source: RECOM)