Mitsubishi Electric FR-A760 Series Instruction Manual page 295

Frequency/torque setting by analog
input (terminal 1, 2, 4)
(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 2-5 (across 4-5) 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 frequency 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 145)
⋅ Make the bias frequency setting using calibration parameter C2 (Pr. 902) or C5 (Pr. 904). (Refer to page 281)
Take care when setting any value other than "0" as the bias frequency at 0V (0mA). Even if a speed command is
not given, merely turning on the start signal will start the motor at the preset frequency.
♦ Parameters referred to ♦
Pr. 20 Acceleration/deceleration reference frequency
Pr. 73 Analog input selection, Pr. 267 Terminal 4 input selection
Pr. 79 Operation mode selection
284
Pr. 125) or
Flicker...Parameter setting complete!!
CAUTION
Refer to page 161
Refer to page 271
Refer to page 298
Display
or
Terminal 2 input Terminal 4 input
Terminal 2 input Terminal 4 input