Operation Display - Mitsubishi Electric FR-A720-0.4K Instruction Manual

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.
to change the set value to
"50.00". (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 operation 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 153)
⋅ 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 speed at 0V (0mA). Even if a frequency 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 168
Refer to page 274
Refer to page 295
Display
or
Terminal 2 input Terminal 4 input
Terminal 2 input Terminal 4 input