Toshiba Q9 Plus ASD, Installation & Operation Manual

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E6581611
F-44
6
6.11 Operation frequency
6.11.1 Starting frequency/ Stop frequency
f240 : Starting frequency
f243
: Stop frequency setting

Function
The frequency set with

is put out instantly when operation is started.
Use the  parameter when a delay in response of starting torque due to the
acceleration/deceleration time may affect the operation. Setting the starting frequency to a value from
0.5 to 3.0Hz is recommended. The occurrence of an overcurrent can be avoided by setting this
frequency below the rated slippage of the motor.
When starting: Frequency set with
f240 is output instantly.
When stopping: Output frequency turns to be 0Hz instantly with the frequency set with
f243
.
[Parameter setting]
Title Function Adjustment range Default setting
f240 Starting frequency 0.1-10.0 (Hz) 0.5
f243 Stop frequency setting
0.0: Same as f240
0.1-30.0 (Hz)
0.0
Note: Set these parameters so that the starting frequency
f240 is higher than the stopping frequency f243 .
If the f240 –set frequency is lower than the f243 –set frequency, the inverter doesn’t start when the
frequency command is f243 –set frequency or less.
Starting frequency 
Stopping frequency 
Output frequency [Hz]
Time [s]
0