E6581611
F-71
6
6.19.6 Output voltage adjustment/Supply voltage correction
vlv
: Base frequency voltage 1
f307
: 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 at frequencies exceeding the base frequency (
vl
) to
prevent outputting the voltage exceeding base frequency voltage (
vlv
).
Applied when operating a special motor with low induced voltage.
[Parameter setting]
Title
Function
Adjustment range
Default setting
vlv
Base frequency voltage1
50-330 (240V class)
50-660 (500V class)
*1
0: Supply voltage uncorrected,
output voltage limited
1: Supply voltage corrected,
output voltage limited
2: Supply voltage uncorrected,
output voltage unlimited
f307
Supply voltage correction
(output voltage limitation)
3: Supply voltage corrected,
output voltage unlimited
*1
*1: Default setting values vary depending on the setup menu setting. Refer to section 11.5.
,
If
f307
is set to "
0
" or "
2
", the output voltage will change in proportion to the input voltage.
,
Even if the base frequency voltage (
vlv
parameter ) is set above the input voltage, the output voltage
will not exceed the input voltage.
,
The ratio of voltage to frequency can be adjusted according to the rated motor voltage and frequency.
Setting
f307
to "
0
" or "
1
" 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
6
, the supply
voltage is corrected regardless of the setting of
f307
.
Содержание Q9 Plus ASD
Страница 5: ...TM Q9 Plus Bypass ASD Bypass Box INSTALLATION OPERATION MANUAL June 2013 DN 68251 000 ...
Страница 61: ...Q9 PLUS ASD LOW VOLTAGE DRIVE ...
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