E6581595
F-30
6
6.12.5 Output voltage adjustment/Supply voltage correction
: Base frequency voltage 1
: Supply voltage correction (output voltage limitation)
Function
Supply voltage correction: Prevent torque decline during low-speed operation.
Maintains a constant V/F ratio, even when the input voltage fluctuates.
Output voltage limitation: Limits the voltage to prevent outputting the voltage over base frequency
voltage (
vlv
).
Applied when operating a special motor with low induced voltage.
[Parameter setting]
Title Function
Adjustment range
Default setting
Base
frequency voltage1
50-330 (V)
*1
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
*1
*1: Default setting values vary depending on the setup menu setting. Refer to section 11.5.
For supply voltage uncorrected (
=
or
), the output voltage will change in proportion to the input
voltage.
Even if the base frequency voltage (
parameter ) is set over the input voltage, the output voltage will
not outputted over the input voltage.
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
.
