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E6581381
F-30
6
* 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.