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E6580757
F-31
6
6.12.6 Output voltage adjustment/Supply voltage correction
: Output voltage adjustment (Base frequency voltage)
: Supply voltage correction
• Function
Output voltage adjustment (Base frequency voltage)
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", "1", or "2".)
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 adjustment............. 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
Output voltage adjustment
(Base frequency voltage)
0 ∼ 250 (V), 0 ∼ 500 (V)
200V/400V
Supply voltage correction
0: Supply voltage uncorrected,
output voltage limited
1: Supply voltage corrected,
output voltage limited
2: Supply voltage corrected (off during slow-
down), output voltage limited
3: Supply voltage uncorrected,
output voltage unlimited
4: Supply voltage corrected,
output voltage unlimited
5: Supply voltage corrected (off during decel-
eration), output voltage unlimited
1
✩ If is set to "0" or "3", 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.