53
When the rated motor frequency is 50Hz
(Pr. 3)<V/F><S MFVC>
4
DRIVING THE MOTOR
4.3 When the rated motor frequency is 50Hz (Pr. 3)
<V /F> <S M FVC>
First, check the motor rating plate. If a frequency given on the rating plate is "50Hz" only, always set Pr. 3 Base frequency
to "50Hz". If it remains at "60Hz", the voltage may become too low and torque shortage occurs, resulting in an overload
trip. It may result in an inverter trip (E.OC) due to overload.
Parameter
Number
Name Initial Value Setting Range Description
3 Base frequency
60Hz 0 to 400Hz
Set the frequency when the motor
rated torque is generated.
Changing example Change Pr. 3 Base frequency to 50Hz according to the motor rated frequency.
V/F
V/F
V/F
S
MFVC
S
MFVC
S
MFVC
3.Press to choose the parameter
setting mode.
Flicker ··· Parameter setting complete!!
7.Press to set.
·
By turning , you can read another parameter.
· Press to show the setting again.
· Press twice to show the next parameter.
4.Turn until Pr. 3 Base frequency
appears.
1.Screen at power-ON
The monitor display appears.
2.Press to choose the PU operation
mode.
PU indicator is lit.
Display
Operation
The parameter
number
read previously
appears.
5.Press to show the present set
value. (60Hz)
6.Turn to change the set
value to " ". (50Hz)