When The Rated Motor Frequency Is 50Hz (Pr. 3) - Mitsubishi 700 Series 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
Number
3 Base frequency
Changing
Change Pr. 3 Base frequency to 50Hz according to the motor rated frequency.
example
Operation
1.
Screen at powering ON
The monitor display appears.
2.
Press to choose the PU operation mode.
3.
Press to choose the parameter setting
mode.
4.
Turn until "
5.
Press to read the currently set value.
" " (60.00Hz (initial value)) appears.
6.
Turn to change the set value to
" " (50.00Hz).
7.
Press to set.
Turn
Press
Press
REMARKS
Pr. 3 is invalid under General-purpose magnetic flux vector control and Pr. 84 Rated motor frequency is valid.
Name Initial Value
60Hz
" (Pr. 3) appears.
to read another parameter.
to show the setting again.
twice to show the next parameter.
V/F V/F V/F
Setting Range
0 to 400Hz Set the rated motor frequency.
Display
PU indication is lit.
PRM indication is lit.
(The parameter number read previously
appears.)
Flicker ··· Parameter setting complete!!
Before operation
Description
43
3