Toshiba VF-FS1 instruction manual E6581381

Models: VF-FS1

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E6581381

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

*If H is set to  or , QER trip will occur when the current increases and reaches the level above which the carrier frequency is decreased automatically.

*Random control is exercised when the motor is operated in a low-frequency range where it produces annoying magnetic noise.

If the carrier frequency (H) is set above 7.1 kHz, the random control function will not be performed, because the level of motor magnetic noise is low at high frequencies.

*When the carrier frequency control mode selection (H) is set to  or , the carrier frequency (H) should be set preferably 6 kHz. Otherwise the output voltage may drop.

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Page 126
Image 126
Toshiba VF-FS1 instruction manual E6581381