Toshiba VF-A7 instruction manual Manually setting the acceleration and deceleration times, Time s

☆If you set in advance the acceleration and deceleration times (,) so that they match the average load condition, you can make the optimum setting to control the motor with a higher accuracy according to changes in the load applied.

[Procedure for setting the automatic acceleration and deceleration times]

Key operated	LED display	Operation
		The running frequency is displayed. (If the monitor display
		mode setting parameter  is set at [Running
		frequency])
MON		Press the [MON] key to call up the first basic
		parameter  (Automatic acceleration/deceleration).
ENT		Press the Enter key to display the parameter setting.
▲		Change the parameter setting to  (automatic
		acceleration/deceleration enabled) by pressing △ key.
ENT	⇔	Press the Enter key to save the change. Then,  and
		the set value are displayed alternately.

5.1.2 Manually setting the acceleration and deceleration times

This section describes how to set the acceleration time (the operation frequency goes up from 0Hz to the maximum frequency  and the deceleration time (the operation frequency goes down from the maximum frequency  to 0Hz).

Output frequency [Hz]



０

	＝ (Manual setting)
	Time [s]
	

[Parameter setting]

Title	Function	Adjustment range				Default setting
	Acceleration time #1	 (See	note.)	~	 [s]	Model	dependent
	Deceleration time #1	 (See	note.)	~	 [s]	Model	dependent

Note) The minimum setting of acceleration and deceleration times have been set respectively at 0.1sec. by default, but they can be changed within a range of 0.01 to 10 sec. by changing the setting of the parameter  (Acceleration/deceleration time lower limit).

→Refer to 6.23.3 for details.

☆If the acceleration or deceleration time is set shorter than the optimum time, which varies according to the loading condition, it may become longer than the set time because of the over-current stall function or the over-voltage stall function. In addition, if the acceleration or deceleration time is set much shorter, the inverter trips more easily to protect itself from an over-current or an over-voltage.

(Refer to 12.1 for details.)

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