46
In addition, any desired V/f pattern can be set for special specifica-
tions.
Any V/f pattern can be set according to the load characteristics.
The factory preset value is set to 60 Hz saturation type pattern.
No. 8
No. 6
No. 3
No. 2
0
No. 8
No. 6
No. 3
60 Hz
0
12
200 V
1.5 Hz
No. 7 No. 5
No. 4 No. 2
Freq.
Voltage
Freq.
Voltage
(See note 1.)
Factory preset
V/f pattern setting
No. 7 No. 5No. 4
Note
1. Values for the 400-V Class are twice those of the 200-V Class.
2. The output voltage will not exceed the upper limit if the output
voltage limiter function is used. To increase the output voltage
ignoring the upper limit, do not use the output voltage limiter
function. For details refer to
Output Limiter Selection.
3. If an excessively large value is set in low-speed area (3 Hz or
less), motor overheating or Inverter malfunction may occur.
Output Limiter Selection When V/f is set to an excessively large value, an Inverter fault may
occur. Therefore, in order to prevent malfunction, an upper limit
can be set for the output voltage. However, the setting is not neces-
sary under normal operation.
No. 01 = 0xxx
4
th
digit
0: Desired V/f with output voltage limiter
1: Desired V/f without output voltage limiter
250 V
Frequency
Output voltage
20 V
10 V
No. 4
No.4
40
(No. 4 = Maximum voltage frequency)
Output voltage
limiter pattern
(See note 1)
Note
1. Output voltages of the 400-V-Class are twice those of the
200-V-Class.
2. If the 4
th
digit of constant No. 01 is set to 1, V/f Characteristic
matching the motor characteristics must be set.
Description of Functions and Constants
Section 2-8
