Toshiba TOSVERT VF-AS1 Instruction Manual page 147

[Parameter setting]
Title


If  is set to  or , the output voltage will change in proportion to the input voltage.
Even if the base frequency voltage () 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  prevents the output voltage from increasing, even if the input voltage changes when the operation
frequency exceeds the base frequency.
When the V/f control mode selection parameter () is set to any number between ~ or ~, the supply
voltage is corrected regardless of the setting of .
[=: Supply voltage uncorrected, output voltage
unlimited]
Input voltage
[V]
6
* The above applies when V/f control mode selection
parameter  is set to , or .

Rated voltage
[=: Supply voltage uncorrected, output voltage
limited]

Input voltage
[V]
* The above applies when V/f control mode selection
parameter  is set to , or .

Rated voltage
Note: Rated voltage is fixed for 500V class at 500V, 575V class at 575V and 690V class at 690V.
Function
Base frequency voltage 1
(output voltage
adjustment)
:Without voltage compensation (limitless output voltage)
Base frequency voltage
: With voltage compensation (limitless output voltage)
selection
: Without voltage compensation (limited output voltage)
(correction of supply
: With voltage compensation (limited output voltage)
voltage)
0

Output frequency
>1 the output voltage can be
prevented from exceeding
the input voltage.
0

Output frequency
>1 the output voltage can be
prevented from exceeding
the input voltage.
Adjustment range
~ V
[=: Supply voltage corrected, output voltage
unlimited]
Input
voltage
High

Low
[V]
0
Output frequency
* Note that a voltage higher than  is applied at
output frequencies over the base frequency , even
if  is set below the input voltage.
[=: Supply voltage corrected, output voltage
limited]
Input
voltage

High
Low
[V]
0
F-26
Default setting
⇒ Refer
Input
voltage

Input
voltage

Output frequency
E6581528
to page K-2.

High
Low
High
Low