Toshiba VF-AS1 Drooping control, Reverse run prohibition Reverse run prohibition selection

E6581301

￿￿￿

>1 the output voltage can be

Rated voltage prevented from exceeding the input voltage.

Note: Rated voltage is fixed for 200V class at 200V and 400V class at 400V.

6.14.4Reverse run prohibition

￿￿￿￿￿: Reverse run prohibition selection

• Function

This function prevents the motor from running in the forward or reverse direction when it receives the wrong operation signal.

[Parameter setting]

Title	Function	Adjustment range	Default setting
￿￿￿￿￿	Reverse-run prohibition selection	￿:Permit all, ￿:Prohibit reverse run	￿￿
		￿:Prohibit forward run

Warning!!

• If an operation command is entered to rotate the motor in the direction prohibited for the preset speed operation with the mode or forced jog operation, this parameter will cancel the command regardless of operation mode.

• If the motor constant is not set properly while vector control mode or automatic torque boost mode is selected, the motor may turn in the reverse direction. The number of revolutions that correspond to the slip frequency, in these modes, therefore, the stop frequency (￿￿￿￿) should be set at the same level as the slip frequency. In sensor vector control mode (￿￿=￿, ￿), depending on the setting of ￿￿￿, the motor restarted may rotate in the direction opposite to the prohibited direction regardless of the setting of this parameter.

6

6.14.5Output voltage waveform selection

￿￿￿￿￿: Output voltage waveform selection

• Function

It is an effective function only to the capacity of VFAS1-2550P and above, VFAS1-4900PC and above.

The loss of the inverter is reduced a little by setting it to ￿￿￿￿=￿, when using it with the career frequency raised (only as a guide 4kHz and above.!However, some magnetic sounds from the motor is different and use it after confirming whether there is problem in noise.

[Parameter setting]

Title	Function	Adjustment range	Default setting
￿￿￿￿￿	Output voltage waveform	￿:PWM carrier frequency control 1	￿￿
	selection	￿: PWM carrier frequency control 2

6.15Drooping control

￿￿￿￿: Drooping gain

￿￿￿￿: Speed at drooping gain 0%

￿￿￿￿: Speed at drooping gain ￿￿￿￿

￿￿￿￿: Drooping insensitive torque

￿￿￿￿

: Drooping output filter

•Function

When multiple inverters and motors are used to operate a system, the load can distribute to them using this function. These parameters allow you to adjust the frequency range, and also insensitive torque and gain.

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