Toshiba Tosvert VF-AS1 - Manual (Page 138)

E6581301
F-26
6
[Parameter setting]
Title Function Adjustment range Default setting
XNX
Base frequency voltage 1
(output voltage
adjustment)
V class:~V
V class:~V
200V models:
400V models:
H
Base frequency voltage
selection
(correction of supply
voltage) :Supply voltage uncorrected, output voltage unlimited
:Supply voltage corrected, output voltage unlimited
:Supply voltage uncorrected, output voltage limited
:Supply voltage corrected, output voltage limited
+ If H is set to or , the output voltage will change in proportion to the input voltage.
+ Even if the base frequency voltage (XNX) 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
H 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 (RV) is set to any number between ~ or ~, the supply
voltage is corrected regardless of the setting of H.
[H=: Supply voltage uncorrected, output voltage
unlimited] [H=: Supply voltage corrected, output voltage
unlimited]
Input
voltage
High
Low
Output frequency
O
u
tput
vo
lta
ge
[V]
XN
0
×
XNX
Rated voltage
[Note]
Input
voltage
Input
voltage
High
Low
O
u
tp
ut
v
o
ltag
e
[V]
Output frequency XN
0
XNX
* The above applies when V/f control mode selection
parameter RV is set to , or .
XNX
Rated voltage
>1 the output voltage can be
prevented from exceeding
the input voltage.
* Note that a voltage higher than XNX is applied at
output frequencies over the base frequency XN, even
if XNX is set below the input voltage.
[H=: Supply voltage uncorrected, output voltage
limited] [H=: Supply voltage corrected, output voltage
limited]
XN
Input
voltage
High
Low
Output frequency
Out
p
ut
vo
ltage
[V]
0
×
XNX
Rated voltage
[Note]
Input
voltage
XNX
Input
voltage
High
Low O
u
tput
v
o
ltag
e
[V]
Output frequency XN
0
XNX
* The above applies when V/f control mode selection
parameter RV is set to , or .
XNX
Rated voltage
>1 the output voltage can be
prevented from exceeding
the input voltage.
Note: Rated voltage is fixed for 200V class at 200V and 400V class at 400V.