E6582175
F-23
6
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
Function
Adjustment range
Default setting
V/f 5-point setting VF1 frequency
~
(Hz)
V/f 5-point setting VF1 voltage
~
(%) / (V) *
V/f 5-point setting VF2 frequency
~
(Hz)
V/f 5-point setting VF2 voltage
~
(%) / (V) *
V/f 5-point setting VF3 frequency
~
(Hz)
V/f 5-point setting VF3 voltage
~
(%) / (V) *
V/f 5-point setting VF4 frequency
~
Hz
V/f 5-point setting VF4 voltage
~
(%) / (V) *
V/f 5-point setting VF5 frequency
~
(Hz)
V/f 5-point setting VF5 voltage
~
(%) / (V) *
* 100% value is 200V for 240V class, and 400V for 500V class.
Base frequency
voltage 1
Ou
tpu
t v
olt
a
ge
[V]/[%]
Output frequency [Hz]
Base frequency 1
0
VF1
VF2
VF3
VF4
VF5
V/f 5-point setting
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.
Summary of Contents for TOSVERT VF-S15 series
Page 394: ......
