Toshiba VF-AS1 instruction manual Jump frequency jumping resonant frequencies, Jumping width

E6581301

■If two signals are input simultaneously

•If a clear single and an up or down signal are input simultaneously, priority will be given to the clear signal.

•If up and down signals are input simultaneously, the frequency will be increased or reduced by the difference between the settings of ￿￿￿￿ and ￿￿￿￿. For example, if the ￿￿￿￿ setting is larger, the frequency will be increased by the value obtained by subtracting the setting of ￿￿￿￿ from that of ￿￿￿￿.

■Setting of the initial motor operated pot mop setting

To adjust the frequency start at a specified frequency other than 0.0 Hz (default initial frequency) after turning on the inverter, specify the desired frequency using ￿￿￿￿ (initial motor operated pot mop setting).

■Change of the initial motor operated pot mop setting

To make the inverter automatically save the frequency immediately before it is turned off and start operation at that frequency next time power is turned on, set ￿￿￿￿ (change of initial motor operated pot mop setting) to ￿ (which changes the setting of ￿￿￿￿ when power is turned off).

Keep in mind that the setting of ￿￿￿￿ is changed each time power is turned off.

■Frequency adjustment range

The frequency can be set from 0.0 Hz to ￿￿ (Maximum frequency). The lower limit frequency will be set as soon as the set frequency clearing function (function number ￿￿, ￿￿) is entered from the input terminal.

■Minimum unit of frequency adjustment

If ￿￿￿￿ (Frequency free unit magnification) is set to ￿￿￿￿, the output frequency can be adjusted in steps of 0.01Hz.

6.12Jump frequency - jumping resonant frequencies

6
	￿￿￿￿	: Jump frequency 1
	￿￿￿￿	: Jumping width 1
	￿￿￿￿	: Jump frequency 2
	￿￿￿￿	: Jumping width 2
	￿￿￿￿	: Jump frequency 3

￿￿￿￿

: Jumping width 3

•Function

Resonance due to the natural frequency of the mechanical system can be avoided by jumping the resonant frequency during operation. During jumping, hysteresis characteristics with respect to the jump frequency are given to the motor.

Output frequency [Hz]

Jump frequency 1 (￿￿￿￿)	Jumping width 1		(￿￿￿￿)
Jump frequency 2 (￿￿￿￿)	Jumping width 2	(￿￿￿￿)
Jump frequency 3 (￿￿￿￿)	Jumping width 3 (￿￿￿￿)
0

Frequency setting signal

F-22