Overview of the control modes
| U/f | VFCPLUS | CFC | ELSM® | ||
|---|---|---|---|---|---|---|
Principle | Voltage | Field-oriented, voltage-controlled, stator flux controller, torque controller | Field-oriented, current controller | Field-oriented, current controller | ||
Motor | ASM/LSPM | ASM | ASM | ASM | SM | SM |
Encoder | without | without | with | with | with | without |
Dynamics | + | +++ | ++++ | +++++ | +++++ | ++ |
Energy efficiency | + | +++ | +++ | ++ | +++++ | ++++++ |
Velocity control |
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|
|
| ||
Torque control | – |
|
|
| ||
Positioning | – | – |
|
| – | |
Flying start | – DC braking |
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Typical applications | Group drive, multi-motor drives | General materials handling technology, horizontal drives, vertical drives, pumps/fans, winding drives | Packaging technology, handling technology, highly-dynamic positioning | Horizontal | ||
Characteristics | Maximum robustness | Maximum precision | Maximum | Maximum | ||
