Fully shutting down the parts of the system in this case would be fatal. In these circumstances, process functionality must be maintained. Against this background, production processes in the process industry are set up with single or multiple redundancy. Requirements to this effect are therefore made of the electrical systems and not least, the AC power supply networks.
very compact. When the various PRO-M modules are fitted in the cabinet, they can be lined up, right next to one another, because there is no need to separate them for cooling reasons,” explains Klaus Schürmann, product manager for the power supply range. “The second solution is redundancy modules for our PRO-H family that we have developed especially for use in Ex zones and high-performance areas.”
High-availability power supply in shipbuilding and wind energy
and the Weidmüller DC/DC converter. In ungrounded voltage systems, such as those in the emergency power battery system built into ships, the control voltage must be separated from the battery voltage. Class III protection, coupled with high efficiency, makes the compact DC/DC converter ideal for applications of this kind.
Another alternative is to use the PRO-M switched-mode power unit as the DC/DC converter and to couple it with a diode module and 110 or 220 V banks of batteries. Weidmüller also offers custom-fit solutions for comparable redundant concepts, such as those found in the electrical pitch systems of wind turbines. The switch-mode power supply, with a wide-ranging input from the PRO-M series, covers an input voltage range of 80 to 430 V DC and is ideal for such purposes.
One way of building a redundant circuit to increase availability
voltage collapsing. Each redundant branch is independently able to supply the full output load,” says Schürmann, summing up the benefits of the solutions. “On the one hand, by using high-quality power supplies with high MTBF values and, on the other hand, by producing a redundant supply, machine and plant constructors in all industries achieve a significant improvement in application availability.”
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Make your systems fail-safe with Weidmüller's power supply solutions
News in the field of power supply
Published in February 2013
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