Toshiba Tosvert VF-S15 Instruction Manual page 135

7) Operating a permanent magnet motor
Setting of V/F control mode selection  to  (PM motor control)
Permanent magnet motors (PM motors) that are light, small in size and highly efficient, as compared to
induction motors, can be operated in sensor-less operation mode.
Note that this feature can be used only for specific motors after tuned with an connected specific motor.
For more information, contact your Toshiba distributor.
If the specific motor is not connected at tuning, e-39 trip will occur.
8) Setting of V/f characteristic arbitrarily
Setting of V/f control mode selection pt to 7 (V/f 5-point setting)
In this mode, the base frequency and the base frequency voltage for the V/f control need to be set to operate
the motor while switching a maximum of 5 different V/f characteristics.
[Parameter setting]
Title
V/f 5-point setting VF1 frequency

V/f 5-point setting VF1 voltage

V/f 5-point setting VF2 frequency

V/f 5-point setting VF2 voltage

V/f 5-point setting VF3 frequency

V/f 5-point setting VF3 voltage

V/f 5-point setting VF4 frequency

V/f 5-point setting VF4 voltage

V/f 5-point setting VF5 frequency

V/f 5-point setting VF5 voltage

* 100% value is 200V for 240V class, and 400V for 500V class.
Base frequency
voltage 1






[V]/[%]

0
Note 1: Restrict the value of torque to boost (vb) to 3% or so. Boosting the torque too much may impair the
linearity between points.
Note 2: Please note if the inclination of each V/f is too high (exceeding 8.25%/Hz), a-02 (Points setting alarm 2)
will occur.
Function
~ (Hz)
~ (%) / (V) *
~ (Hz)
~ (%) / (V) *
~ (Hz)
~ (%) / (V) *
~ Hz
~ (%) / (V) *
~ (Hz)
~ (%) / (V) *
V/f 5-point setting
VF4
VF3
VF1
VF2
   
F-23
Adjustment range
VF5
Output frequency [Hz]
 
Base frequency 1
E6582175
Default setting




6





