Mitsubishi Electric FR-D720S SC EC, Instruction Manual, Page: 112 / 512

Simple mode parameter list Basic settings
5 - 4
5.1.2 When the rated motor frequency is 60Hz (Pr. 3)
First, check the motor rating plate. If a frequency given on the rating plate is "60Hz" only, always
set Pr. 3 "Base frequency" to "60Hz". Leaving the base frequency unchanged from "50Hz" may
make the voltage low and the torque insufficient. It may result in an inverter trip due to overload.
쑶
Pr.
No.
Name Initial Value
Setting
Range
Description
3
Base frequency 50Hz 0–400Hz Set the rated motor frequency.
Example
쑴
Change Pr. 3 "Base frequency" to 60Hz according to the motor rated frequency.
I001745E
Fig. 5-2: Setting the base frequency
V/F V/F V/F
Screen at powering on
The monitor display appears.
Press the PU/EXT key to choose the PU
operation mode.
Press the MODE key to choose the parameter
setting mode.
Turn the digital dial until P.3 (Pr. 3) appears.
Press the SET key to show the currently set value.
The initial value "50.00" (50Hz) appears.
Turn the digital dial to change it to the setting
value of "60.00".
Press the SET key to set.
Operation Display
The parameter number
read previously
appears.
Flicker ... Parameter setting complete!
PU indication is lit.
By turning the digital dial, you can read another parameter.
Press the SET key to show the setting again.
Press the SET key twice to show the next parameter.
PRM indication is lit.