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C-4
Frequency setting
Setting the operation frequency with an external volume control
By default, the VF-A7 inverter has been set to a mode in which an external volume
control can be used for setting the operation frequency.
[Parameter setting]
Speed setting mode selection parameter at .
(There is no need to set this parameter before the first use after purchase.
Setting the frequency by voltage signals (0 to 10 V)
Voltage signal 0 to 10Vdc
[Parameter setting]
Speed setting mode selection parameter at .
(There is no need to set this parameter before the first use after purchase.
Setting the frequency by a current signal (4 to 20 mA)
Current signal 4 to 20mAdc
[Parameter setting]
Speed setting mode selection parameter at .
This setting cannot be made when the terminal VI is used.
Frequency setting
with potentiometer
Volume control
The operation frequency by potentiometer (1 to
10k 1/4 W) for setting
Refer to 7.3 for details of adjustment.
Fre
q
uenc
y
80Hz
MIN MAX
80Hz
Frequency
0
4mAdc
20mAdc
Current signal
Current signals (4 to 20 mA) for setting the
operation frequency.
Refer to 7.3 for details of adjustment.
Voltage signal
Voltage signals (0 to 10 V) for setting t
he operation frequency
Refer to 7.3 for details of adjustment.
80Hz
0
0Vdc
10Vdc
Frequency