Mitsubishi Electric FR-A700 EC, Instruction Manual

Page: 570 / 826

Frequency/torque setting by analog input (terminals 1, 2 and 4) Parameter
6 - 390
3.Method to adjust only the frequency without adjustment of a gain voltage (current).
(The gain frequency is changed from 50Hz to 40Hz.)
I001614E
Fig. 6-190: Adjusting only the frequency without adjustment of a voltage (current)
NOTES 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 operation procedure using the parameter unit (FR-PU04 or 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 6-168.)
Make the bias frequency setting using calibration parameter C2 (Pr. 902) or C5 (Pr. 904).
(Refer to page 6-385.)
b
CAUTION:
Take care when setting any value other than "0" as the bias speed at 0V (0/4mA). Even
if a frequency command is not given, merely turning on the start signal will start the
motor at the preset frequency.
Turn the digital dial until P.125 (Pr. 125) or
P.126 (Pr. 126) appears
Press the SET key to show the currently set
value (50.00Hz).
Turn the digital dial to change it
to the setting value of "40.00" (40.00Hz).
Press the SET key to set.
Press the MODE key twice to choose monitor/
frequency monitor.
Apply the maximum signal value to the
terminals 2-5 (4-5) and turn the start signal
(STF or STR) on. The inverter will accelerate
the motor to 40Hz.
Operation Display
Flicker ... Parameter setting complete!
or
Terminal 4 input Terminal 2 input
Terminal 4 input Terminal 2 input