Mitsubishi Electric FR-F720P-0.75K to 110K Instruction Manual page 208

(c) Method to adjust only the frequency without adjustment of a gain voltage (current).
(When changing the gain frequency from 60Hz to 50Hz)
Operation
1.
(Pr. 126) appears.
2.
Press to show the currently set value.
(60.00Hz)
3.
Turn to change the set value to
" ". (50.00Hz)
4.
Press to set.
5.
Mode/monitor check
Press twice to choose the
monitor/frequency monitor.
6.
Apply a voltage across the inverter
terminals 2 and 5 (across 4 and 5) and
turn ON the start command (STF, STR).
Operation starts at 50Hz.
REMARKS
⋅ Changing C4 (Pr. 903) or C7 (Pr. 905) (gain adjustment) value will not change the Pr. 20 value. The input of terminal 1 (frequency
setting auxiliary input) is added to the speed setting signal.
⋅ For the operating procedure using the parameter unit (FR-PU04/FR-PU07), refer to the FR-PU04/FR-PU07 instruction manual.
⋅ When setting the value to 120Hz or more, it is necessary to set Pr. 18 High speed maximum frequency to 120Hz or more. (Refer to
page 96)
⋅ Make the bias frequency setting using calibration parameter C2 (Pr. 902) or C5 (Pr. 904). (Refer to page 194)
Be cautious when setting any value other than "0" as the bias frequency at 0V (0mA). Even if a speed command
is not given, simply turning ON the start signal will start the motor at the preset frequency.
♦ Parameters referred to ♦
Pr. 125 Terminal 2 frequency setting gain frequency
Pr. 126 Terminal 4 frequency setting gain frequency
Pr. 241 Analog input display unit switchover
C2(Pr. 902) Terminal 2 frequency setting bias frequency
C3(Pr. 902) Terminal 2 frequency setting bias
C4(Pr. 903) Terminal 2 frequency setting gain
C5(Pr. 904) Terminal 4 frequency setting bias frequency
C6(Pr. 904) Terminal 4 frequency setting bias
C7(Pr. 905) Terminal 4 frequency setting gain
Pr. 125) or
Flicker...Parameter setting complete!!
CAUTION
Refer to page 193
Refer to page 193
Refer to page 193
Refer to page 193
Refer to page 193
Refer to page 193
Refer to page 193
Refer to page 193
Refer to page 193
Frequency setting by analog input (terminal 1, 2, 4)
Display
or
Terminal 2 input Terminal 4 input
Terminal 2 input Terminal 4 input
4
197