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22. PARAMETERS
Pr.3
It is possible to set
the
base frequency (reference
lrequency corresponding
to the motor rated
torque) meeting the motor rating, in the range of
setting r a n g e d
0
to 4 o o t l Z .
By
setting
proper
the
value
for
19 e
m j .
quency voltage), the PWM output is modified
so
that the waveform l w k s to the motor like the volt-
age value set in parameter 19. This will result in
optimum motor performance.
Be90
1 W - W
,
,
B E a S e
-r
f r w w
voltage
Note: If the general purpose magnetic flux vector
con-
trol mode has been selected with Pr.80, setting
of Pr.3 becomes 60HZ.
If Pr.19 has been
set at '9999", Pr.19 = 220V
(44OV for the 400V type) will become valid.
When using the motor designed for use with an
inverter (constant torque motor), set 60Hz for the
base frequency.
*: If '9998" (factory-setting) is
set for Pr.19, the maximum out-
put voltage is the same as the
power supply vdtage.
-63-
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