Supplement: Power
PULS power supplies with various communication interfaces, including IO-Link, EtherCAT, and power supplies with integrated displays. Continues from page 29
Increasing system availability through application data Every minute of system downtime is extremely costly. OEMs in the automotive industry therefore try to minimise the so-called downtime of machines and conveyor systems to an absolute minimum.
With pneumatic drives, there is a risk of a leak in the compressed air system that must first be located. Electric drives are easier to manage in terms of control and preventive maintenance.
PULS offers power supplies with various communication interfaces, including IO-Link, EtherCAT, and power supplies with integrated displays. This allows for easy and quick access to application data and power supply functions.
Based on the power supply data, machine builders and operators can further optimise their machines in terms of efficiency and productivity. EtherCAT (e.g., CP10.241- ETC or CP20.241-ETC) is ideal for monitoring, logging, and remote control of complex systems thanks to real-time data transmission. Power supply data is particularly
30 May 2025
advantageous within real-time control loops. Operators can control drives or other energy-intensive consumers optimally to keep the dynamic power demand within the capabilities of the power supply system. This optimal utilisation of the power supplies enables improved system efficiency. In particular, the power supplies, together with other system components, enable automated responses to handle unplanned operating conditions that previously often led to downtime or even damage.
For example, the power supply provides precise measurements of the output current – that is, the load current. Using these finely sampled values, it is possible to recognise and describe digital load profiles.
Based on the information about the output current, the operator can determine whether a load, such as an electric motor, changes over a longer period. This change can be an indication of wear. In the case of worn profiles, a sine wave would be recognisable in the load profile. Computer-aided data analysis helps to detect and report this anomaly early. This way, it is easy to replace the wearing
Components in Electronics
component before a failure and system downtime occur.
The decision for an electric drive is only one factor that positively impacts efficiency and the CO2 balance. Power supplies with high efficiency also support this process. The higher the efficiency of a power supply, the lower the power losses and thus the energy waste. PULS now achieves efficiencies of over 96 per cent with its power supplies. An example calculation illustrates the importance of this value. With an efficiency of 96.4 per cent (e.g., with the SP960.241-S), losses of 3.6 per cent occur. For the corresponding power supply with 960 W output power, the power loss is thus 34.5 W, which is dissipated as heat to the environment.
A thought experiment shows the significance of each percentage point in efficiency. If we reduce the efficiency to 92 per cent, we see increased losses of 76.8 W, more than double.
Applying this to the total number of power supplies in a factory and considering the additional cooling, it significantly impacts the CO2 balance. The higher the efficiency of a power supply, the lower the energy waste and thus the CO2 emissions.
pneumatic to electric drives Increasing cost pressure and stricter CO2 reduction requirements drive the shift from pneumatic to electric drives in the industry. Electric drives offer better energy efficiency and lower operating costs, although they are more expensive and complex to purchase. Especially in the automotive industry, it is evident that decentralised power supply with powerful power supplies increases flexibility and minimises energy losses. PULS supports the transition from pneumatic to electric drives with suitable industrial power supply solutions. This not only contributes to reducing the CO2 footprint but also makes financial sense for companies.
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