Toshiba TOSVERT VF-FS1 Instruction Manual page 144

6.15.2 Setting motor constants 2 (Details)
6
* The following parameters enables you to make adjustments more finely.
: Using this parameter along with
: Using this parameter along with
* How to make adjustments according to the moment of inertia of the load
The moment of inertia of the load (including that of the motor shaft) was set at the factory on the
assumption that it would be three times as large as that of the motor shaft.
Adjust ,
of the motor inertia.
When making the above adjustments, increase or decrease settings in steps of 10% or so while
checking how things change.
Note also that, depending on the settings of
the upper-limit frequency if the inverter is set so as to accelerate the load in the shortest
possible time.
: Exciting current coefficient
: Stall prevention control coefficient 1
: Stall prevention control coefficient 2
: Motor adjustment coefficient
: Maximam voltage adjustment coefficient
: Waveform switching adjustment coefficient
Title Function
Exciting current coefficient
Stall prevention control
coefficient 1
Stall prevention control
coefficient 2
Motor adjustment coefficient
Maximam voltage adjustment
coefficient
Waveform switching
adjustment coefficient
: Used to fine adjust the magnetic field increase rate in low-speed range. To increase the torque in
low-speed range, specify a larger value for
only when enough torque cannot be obtained, even though auto-tuning (
after the setting of the parameters
parameter may cause an increase in the no-load current in low-speed range. If the no-load current
exceeds the rated current, do not adjust this parameter.
: Using this parameter along with
is above the base frequency (region where the field is weak).
, adjust the speed of response to the frequency command.
, adjust the speed of response to the frequency command.
with the ratio of inertia in case load inertia is different from three times
and
Adjustment range
100-130 (%)
10-250
50-150
0-200
90-120 (%)
0.1-14.0(kHz)
. Note that this parameter should be adjusted
through
adjusts characteristics in a region in which the frequency
F-48
E6581381
, the frequency may exceed
Default setting
100
100
100
Depends on
the capacity
104
14.0
= ) was made
. Note also that adjusting this