drives

By driving. Any more questions?

leveles

You get a big WA (wise a** ) from me !!!

Essentially as follows...

They consist of an assemblage of sections.

1) Power Supply Section. Obviously tasked with providing the voltage and current levels the remaining sections require to operate.

2) Input Section. Receives inputs from the customer such as run parameters and stores them. Receives and sends out I/O signals from other devices. May include a wide assortment of fieldbus and other communication methodologies (discrete input and output devices, RS-232C, RS-422, Profibus, Modbus, SERCOS, etc)

3) Feedback Section. Receives and sends out analog and digital signals that monitor the driven systems performance. Such feedback may come from resolvers, encoders, tachometers and lots of other instrumentation types.

4) Control Section. Processes the data from the input section, the feedback section and the converter section and creates the required control signals need to drive the converter section.

5) Converter Section. Takes the signals from the control section as its command values and converts power from the power supply to the levels need to go to the driven motor at any given time.

You can change the names around a bit... but essentially these are the minimum things required in a drive.

ok. thanks

Google it. Wiki has a bunch of information on them. Basically they still work the same as old hard drives with the exception of the interface to the PC.