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VF-FS1 Industrial Inverter - Toshiba

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400V Class for IP20]<br />

Output current<br />

100%<br />

80%<br />

60%<br />

40%<br />

20%<br />

Output current<br />

100%<br />

80%<br />

60%<br />

40%<br />

20%<br />

37kW<br />

6 8 10 12 14 16<br />

Switching frequency (kHz)<br />

75kW<br />

6 8 10 12 14 16<br />

Switching frequency (kHz)<br />

Output current<br />

100%<br />

80%<br />

60%<br />

40%<br />

20%<br />

F-33<br />

45kW<br />

6 8 10 12 14 16<br />

Switching frequency (kHz)<br />

40degC ambient<br />

50degC ambient<br />

60degC ambient<br />

Output current<br />

E6581381<br />

* The currents in the above figure are used as the basis to make calculations for inverter overload trip ().<br />

* If is set to or , trip will occur when the current increases and reaches the level above<br />

which the carrier frequency is decreased automatically.<br />

* Random control is exercised when the motor is operated in a low-frequency range where it produces<br />

annoying magnetic noise.<br />

If the carrier frequency () is set above 7.1 kHz, the random control function will not be performed,<br />

because the level of motor magnetic noise is low at high frequencies.<br />

* When the carrier frequency control mode selection () is set to or , the carrier frequency ()<br />

should be set preferably 6 kHz. Otherwise the output voltage may drop.<br />

100%<br />

80%<br />

60%<br />

40%<br />

20%<br />

55kW<br />

6 8 10 12 14 16<br />

Switching frequency (kHz)<br />

6

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