Energy saving
Automatic switching frequency changeover
The power losses of semiconductor components depend on the switching frequency and the level of
the switched current. In the case of a high current load, e.g. during acceleration of high loads, the
switching frequency of the pulse width modulation may be reduced temporarily in order to reduce the
losses of the frequency inverter. If the current drops again after the acceleration phase, a higher
switching frequency will be set automatically.
See chapter 7.10.1 "Pulse width modulation".
Circuitry measures integrated in
The following energy saving measures were integrated in the frequency inverter and do not require
any setup.
− The integrated power supply units supplying the internal assembles are optimized to ensure mini-
mum power losses.
− Low-loss current measurement: The own consumption of the measuring system is optimized to
ensure minimum power losses.
− Supply of optional communication modules: If no communication module is connected, energy
supply to the module slot is switched off.
264
Operating Instructions
Agile
06/2013 Further energy saving options
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