Toshiba TOSVERT VF-PS1 Instruction Manual page 141

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. Note that no
[Parameter setting]
Title
If
Even if the base frequency voltage (
input voltage.
The rate of voltage to frequency can be adjusted according to the rated motor capacity. For example, setting
frequency exceeds the base frequency.
When the V/f control mode selection parameter (
voltage is corrected regardless of the setting of
[ = : Supply voltage uncorrected, output voltage unlimited ]
Input voltage
6
[V]
* The above applies when V/f control mode selection
parameter
Rated voltage
[ = : Supply voltage uncorrected, output voltage
limited]
Input voltage
[V]
* The above applies when V/f control mode selection
parameter
Rated voltage
Note: Rated voltage is fixed for 500V class at 500V, 575V class at 575V and 690V class at 690V.
limit is imposed on the output voltage if the supply voltage is not compensated.
Function
Base frequency voltage1
(output voltage
adjustment)
Base frequency voltage
selection
(correction of supply
voltage)
is set to or , the output voltage will change in proportion to the input voltage.
to prevents the output voltage from increasing, even if the input voltage changes when the operation
0
Output frequency
is set to , or .
>1 the output voltage can be
prevented from exceeding
the input voltage.
0
Output frequency
is set to , or .
>1 the output voltage can be
prevented from exceeding
the input voltage.
Adjustment range
~ V
: Without voltage compensation (limitless output voltage)
: With voltage compensation (limitless output voltage)
: Without voltage compensation (limited output voltage)
: With voltage compensation (limited output voltage)
) is set above the input voltage, the output voltage will not exceed the
) is set to any number between
.
[ = : Supply voltage corrected, output voltage unlimited ]
Input
voltage
High
Low
[V]
0
Output frequency
* Note that a voltage higher than
output frequencies over the base frequency
if is set below the input voltage.
[ = : Supply voltage corrected, output voltage
limited]
Input
voltage
High
Low
[V]
0
Output frequency
F-26
E6581531
Default setting
⇒ Refer
to page K-2.
, , or , the supply
Input
voltage
High
Low
is applied at
, even
Input
voltage
High
Low