1 slart-up frequency if—5 t, 1 start-up frequency, F ~ 5 t ] -3 – Toshiba VF-SX User Manual
Page 124: Toshiba 12-3, Figure 12.1 start-up frequency, 1 slart-up frequency i f — 5 t
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TOSHIBA
12-3
OPERATION STARTING FREQUENCY:
[ F r U C I ]
The operation starting frequency is also an initial frequency output parameter,
but it can be set to a much higher frequency value than the startup frequency.
The value of this parameter can be set as high as the maximum frequency value,
if necessary. Once the frequency setting signal matches or exceeds the operation
starting frequency the output of the drive RAMPS to the run frequency currently
assigned by the chosen frequency setting signal. Similarly, the drive will RAMP
down to a stopping point when the frequency setting signal drops below the
operation starting frequency. The operation starting frequency parameter also
has "hysterisis” as an option. See Section 12.2.3 and Figure 12.2 below for an
explanation of hysterisis.
12.2.1 Slart-Up Frequency I f — 5 t ]
This value is the initial starting frequency the drive will output to the motor.
The motor start-up torque characteristics, can be adjusted to a suitable setting
for virtually any application. The start-up frequency can be set between 0.5 and
10 HZ.
Maximum
Frequency
Start-up
Frequency
Figure 12.1 Start-up Frequency