79
V/F pattern
4
PA
R
A
M
E
T
E
R
S
(3) Base frequency voltage setting
(Pr. 19)
Use
Pr. 19 Base frequency voltage
to set the base voltage (e.g. rated motor voltage).
If the setting is equal to or less than the power supply voltage, the maximum output voltage of the inverter is as set in
Pr. 19
.
Pr. 19
can be utilized in the following cases.
(a) When regeneration frequency is high (e.g. continuous regeneration)
During regeneration, the output voltage becomes higher than the reference and may cause an overcurrent trip
(E.OC
) due to an increased motor current.
(b) When power supply voltage variation is large
When the power supply voltage exceeds the rated voltage of the motor, speed variation or motor overheat may
be caused by excessive torque or increased motor current.
CAUTION
When
Pr. 71
Applied motor
is set to "2" (adjustable 5 points V/F characteristic), the
Pr. 47
setting becomes invalid. In addition, you
cannot set "8888" or "9999" in
Pr. 19
.
Changing the terminal assignment using
Pr. 178 to Pr. 189 (input terminal function selection)
may affect the other functions. Make
setting after confirming the function of each terminal.
i
Parameters referred to
i
Pr. 14 Load pattern selection
Refer to page 80
Pr. 29 Acceleration/deceleration pattern selection
Refer to page 93
Pr. 71 Applied motor
Refer to page 99
Pr. 80 Motor capacity(Simple magnetic flux vector control)
Refer to page 68.
Pr. 178 to Pr. 189 (input terminal function selection)
Refer to page 110.
Содержание F700
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