Modular frequency inverter system
The power modules can also be used individually in special housings and systems for specific applications, but they only develop their full potential in conjunction with the modular frequency inverter system. Two LCU-A inverter modules or four LCU-C compact inverter modules can be integrated in a control cabinet unit. Together with other standardised individual components such as control and regulation electronics, capacitor units, motor/power supply connection units and the cooling system they create flexible control cabinet units. Several of these can be coupled to form complete frequency inverter systems which can be individually configured and which are characterised by a high degree of modularity. The inverter systems feature a high level of equipment protection with DC bus fusing, and are compliant with protection class IP54.
The use of a common DC link and a common liquid cooling circuit provide for high levels of efficiency and economy. Energy from a drive which is not needed can be used by other drive units, or even returned to the supply network. Output can be increased by connecting the power modules in parallel.
During the development of the power modules and inverter systems, great value was given to a user-friendly design and simple integration into machines and systems. The housing dimensions are standardised, the cable connections and assemblies are easily accessible and the individual components can easily be exchanged when necessary. Programming, commissioning, monitoring and diagnosis can be performed with OPAL, an intuitive software with all the functions needed. OPAL allows several function units to be managed in a single project. Process data from the different function units are recorded simultaneously and up to eight parameter sets per unit can be configured. All process parameters can be changed online.