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Frequency setting by analog input (terminal 1, 2, 4)
4
PARAMETERS
4.17.2 Setting the frequency by analog input (voltage input)
[Connection diagram]
(The inverter supplies 5V of power to frequency setting potentiometer. (Terminal 10))
POINT
· Switch ON the STF (STR) signal to give a start command.
· Use the potentiometer (by connecting terminal 2 and 5) to give a frequency command.
Operation example
Performing operation at 60Hz.
Operation Display
1. Screen at power-ON
The monitor display appears.
2. Start
Turn the start switch (STF or STR) ON.
[FWD] or [REV] is flickering as no frequency command is given.
3. Acceleration → constant speed
Turn the potentiometer (frequency setting potentiometer)
clockwise slowly to full.
The frequency on the display increases in the Pr.7 Acceleration
time, and " " (60.00Hz) appears. [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 the Pr. 8 Deceleration
time, and the motor stops rotating with " " (0.00Hz)
displayed. [FWD] indicator or [EXT] indicator flickers.
5. Stop
Turn the start switch (STF or STR) OFF.
[FWD] indicator or [REV] indicator turns OFF.
REMARKS
Pr. 178 STF terminal function selection must be set to "60" (or Pr. 179 STR terminal function selection must be set to "61").
(all are initial values)
5
10
2
STF
STR
SD
Reverse rotation start
Frequency setting
potentiometer
Inverter
Forward rotation start
ON
CAUTION
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.
Forward
rotation
Reverse
rotation
ON
Flickering
Flickering
Stop
OFF
Forward
rotation
Reverse
rotation