Справочник Пользователя для Mitsubishi Electronics FR-A701
96
4.5.3
Setting the frequency by analog input (voltage input)
[Connection diagram]
(The inverter supplies 5V of power to frequency setting potentiometer. (Terminal 10))
(The inverter supplies 5V of power to frequency setting potentiometer. (Terminal 10))
When you want to operate in External operation mode always at power-ON or when you want to save
the trouble of
input, set "2" (External operation mode) in Pr. 79 Operation mode selection to choose
External operation mode always.
POINT
· Switch ON the STF(STR) signal to give a start command.
· Use the potentiometer (frequency setting potentiometer) to give a frequency command. (Connect terminals 2 and
· Use the potentiometer (frequency setting potentiometer) to give a frequency command. (Connect terminals 2 and
5 to input a voltage.)
Operation example Performing operation at 60Hz.
5
10
2
STF
STR
SD
STR
SD
Reverse rotation start
Frequency setting
potentiometer
potentiometer
Inverter
Forward rotation start
CAUTION
2.
Start
Turn ON the start switch (STF or STR).
[FWD] or [REV] is flickering as no frequency
command is given.
5.
Stop
Turn the start switch (STF or STR) OFF.
[FWD] indicator or [REV] indicator turns OFF.
1.
Screen at power-ON
The monitor display appears.
Forward
rotation
rotation
Reverse
rotation
rotation
Forward
rotation Reverse
rotation Reverse
rotation
ON
OFF
ON
Flickering
Flickering
Stop
When both of STF and STR signals are turned
ON, the motor cannot start.
If both are turned ON while the motor is
running, the motor decelerates to a stop.
ON, the motor cannot start.
If both are turned ON while the motor is
running, the motor decelerates to a stop.
Display
Operation
3.
Acceleration
→ constant speed
Turn the potentiometer (frequency setting
potentiometer) clockwise slowly to full.
The frequency on the display increases in
Pr.7
Acceleration time, and " " (60.00Hz) appears.
[FWD] indicator is lit during forward rotation, and
[FWD] indicator is lit during forward rotation, and
[REV] indicator is lit during reverse rotation.
4.
Deceleration
Turn the potentiometer (frequency setting
potentiometer) counterclockwise slowly to full.
The frequency on the display decreases in
Pr. 8
Deceleration time, and the motor stops rotating with
" " (0.00Hz) displayed.
" " (0.00Hz) displayed.
[FWD] indicator or [EXT] indicator flickers.