The new OMUS from Wöhner -- the heat is on!
At Hanover Fair 2016, the Wöhner company from Rödental will present a completely new class of device for the control of frequent and very precise switching processes: «OMUS» -- an electronic hybrid switch for resistive loads. The new OMUS offers unique advantages due to its hybrid technology coupled with adjustable current monitoring, integrated fuses for short-circuit protection and safe and convenient power supply based on Wöhner CrossLink® adapter technology.
Some industries, such as the plastics or food industry, employ machines in which heaters must be switched on and off very accurately and with high frequency. Current solutions for the switching of resistive loads rely on purely mechanical contacts (contactors) or semiconductor technology (solid state relays). While contactors wear extremely quickly because of the high switching frequency, solid state relays wear far less rapidly due to the semiconductor technology, but instead suffer from extremely high power dissipation. The novel «OMUS» hybrid switch from Wöhner combines the advantages of both technologies, ensuring a long life for the appliance with over 30 million switching cycles while at the same time minimizing power dissipation -- and all in an extremely compact 36-mm-wide housing. The new OMUS hybrid switch from Wöhner can be used in areas with up to 25A continuous current.
The device combines low-wear semiconductor technology with mechanical contacts. The OMUS performs the switching process at the ideal moment, zero volts, within a maximum time of 30ms from receipt of switching signal. During the switching process, the hybrid technology first switches the
semiconductor contacts. Immediately afterwards, the parallel-guided mechanical contacts close in a non-wearing process, allowing the semiconductor contacts to reopen. These results in virtually no heat loss during the switching operation -- depending on the frequency, up to 66% of w