When The Rated Motor Frequency Is 50Hz (Pr. 3) - Mitsubishi Electric FR-A701 Instrucion Manual

Before operation
4.3.3

When the rated motor frequency is 50Hz (Pr. 3)

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". Leaving the base frequency unchanged from "60Hz" may make the voltage low and the torque insufficient. It
may result in an inverter trip (E.OC ) due to overload.
Parameter
Number
3 Base frequency
Changing example Change Pr. 3 Base frequency to 50Hz according to the motor rated frequency.
1.
Screen at powering on
The monitor display appears.
2.
Press
mode.
3.
Press
setting mode.
4.
Turn
appears.
5.
Press
value. (60Hz)
6.
Turn
the set value "
7.
Press
REMARKS
· Pr. 3 is invalid under advanced magnetic flux vector control, real sensorless vector control, and vector control and Pr.84 Rated
motor frequency is valid.
58
Name Initial Value
Operation
to choose the PU operation
to choose parameter
until Pr. 3 Base frequency
to show the currently set
to change it to
". (50Hz)
to set.
By turning , you can read another parameter.
·
Press to show the setting again.
·
Press twice to show the next parameter.
·
Setting Range
60Hz 0 to 400Hz
PU indication is lit.
Flicker Parameter setting complete!!
···
V/F V/F V/F
Description
Set the frequency when the motor
rated torque is generated.
Display
The parameter
number
read previously
appears.