E6582233
F-34
6
6.13.6 Output voltage adjustment/Supply voltage correction
: Base frequency voltage 1
: Supply voltage correction (output voltage limitation)
Function
Base frequency voltage1
The
parameter adjusts the voltage corresponding to the base frequency 1
so that no
voltage exceeding the
set value is put out. (This function is enabled only when
is set
to either "0" or "1".)
Supply voltage correction
The
parameter maintains a constant V/F ratio, even when the input voltage decreases. The
torque during low-speed operation is prevented from decreasing.
Supply voltage correction: Maintains a constant V/F ratio, even when the input voltage fluctuates.
Output voltage limitation: Limits the voltage at frequencies exceeding the base frequency. Applied when
operating a special motor with low induced voltage.
[Parameter setting]
Title Function
Adjustment range
Default setting
Base
frequency
voltage1
50-660 (V)
400
Supply voltage correction
(output voltage limitation)
0: Supply voltage uncorrected,
output voltage limited
1: Supply voltage corrected,
output voltage limited
2: Supply voltage uncorrected,
output voltage unlimited
3: Supply voltage corrected,
output voltage unlimited
2
★
If
is set to "
" or "
", the output voltage will change in proportion to the input voltage.
★
Even if the base frequency voltage (
parameter ) is set above the input voltage, the output voltage
will not exceed the input voltage.
★
The rate of voltage to frequency can be adjusted according to the rated motor capacity. For example,
setting
to "
" or "
" prevents the output voltage from increasing, even if the input voltage
changes when operation frequency exceeds the base frequency.
★
When the V/F control mode selection parameter (
) is set to any number between
2
to
4
, the supply
voltage is corrected regardless of the setting of
.
