When The Rated Motor Frequency Is 50Hz (Pr. 3) - Mitsubishi Electric FR-A700 Instruction Manual

3.3.3

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
Name
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.
Initial Value
60Hz
Operation
to choose the PU operation
to choose the parameter
until Pr. 3 Base frequency
to show the currently set
to change it to
". (50Hz)
to set.
Flicker
By turning , you can read another parameter.
·
Press to show the setting again.
·
Press twice to show the next parameter.
·
V/F V/F V/F
Setting Range
Set the frequency when the motor
0 to 400Hz
rated torque is generated.
Display
PU indication is lit.
The parameter
number
read previously
appears.
Parameter setting complete!!
···
Before operation
Description
49
3