Toshiba TOSVERT VF-FS1 Series, Instruction Manual

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E6581381
E-22
5
5) Use a motor that has 2-8 P.
6) Always operate the motor in single operation (one inverter to one motor). Sensorless vector control
cannot be used when one inverter is operated with more than one motor.
7) The maximum length of wires between the inverter and motor is 30 meters. If the wires are longer than 30
meters, set standard auto-tuning with the wires connected to improve low-speed torque during sensorless
vector control.
However the effects of voltage drop cause motor-generated torque in the vicinity of rated frequency to be
somewhat lower.
8) Connecting a reactor or surge voltage suppression filter between the inverter and the motor may reduce
motor-generated torque. Setting auto-tuning may also cause a trip (
GVP
) rendering sensorless vector
control unusable.
8) The following table shows the relationship between the V/F control mode
selection ( RV ) and the motor constant parameter.
Under normal conditions, be sure to set or adjust the parameters marked with
‚
.
When making detailed settings, adjust the parameters marked with
c
as well, if necessary.
Do not adjust the parameters marked with
°
, because they are invalid.
(For instructions about how to adjust the parameter H and later, see section 6.17.)