E6581381

6.6Operation frequency

6.6.1Starting frequency

H : Starting frequency setting

Function

The frequency set with H is put out as soon as operation is started.

Use the H parameter when a delay in response of starting torque according to the acceleration/deceleration time is probably affecting operation. Setting the starting frequency to a value from 0.5 to 3Hz is recommended. The occurrence of an overcurrent can be suppressed by setting this frequency below the rated slippage of the motor.

[Parameter setting]

Title

Function

Adjustment range

Default setting

H

Starting frequency setting

0.5-10.0 (Hz)

0.5

6

6.6.2Run/stop control with frequency setting signals

H : Operation starting frequency

H : Operation starting frequency hysteresis

Function

The Run/stop of operation can be controlled simply with frequency setting signals.

[Parameter setting]

Title

Function

Adjustment range

Default setting

H

Operation starting frequency

0.0-HJ (Hz)

0.0

H

Operation starting frequency hysteresis

0.0-HJ (Hz)

0.0

Output frequency [Hz]

HJ

H + H

H

H - H

The inverter begins accelerating after the frequency setting signal has reached point B.

Deceleration begins when the frequency setting signal decreases below point A.

0

A

B

100% Frequency command value

F-22

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Image 118
Toshiba VF-FS1 Operation frequency, Starting frequency, 2 Run/stop control with frequency setting signals