The company's SK 200E frequency inverter series has an integrated positioning function, high overload capability and broad performance range (0.25 to 22kW); the company says these units are leading the field of electronics for distributed drive control.

One prominently placed exhibit demonstrates their great flexibility especially in large-scale installations with a centralised automation concept: normally controlled via fieldbus or Industrial Ethernet, they can be instantly disconnected via a switch, e.g. for maintenance. The inverter-integrated PLC then takes over and executes tasks like positioning. In case of an unintentional, sudden disruption of communication with a higher-level control system, an SK 200E is able to keep crucial process stages running in order to limit production losses.

The built-in PLC enables drive-related applications to be completely implemented in the drive – including logical sequences, which are conventionally handled by a full-fledged machine controller. Another demo exhibit shows a dedicated drive for pump applications. This unit can detect blockages and independently attempt to resolve them by repeatedly changing the motor speed and direction. If this action successfully removes the blockage, the drive will resume normal operation, otherwise, it will submit an error message to a higher-level control system. In customer applications, additional measures could be initiated as well, e.g. by unlocking a bypass.