Basic operation procedure (External operation)
Using an analog signal (current input) to give a frequency command
Turn ON the STF (STR) signal to give a start command.
Turn ON the AU signal.
Set Pr. 79 "Operation mode selection" = "2" (External operation mode).
Operation example: Operate at 60 Hz.
Screen at power-ON
The monitor display appears.
Terminal 4 input selection
Turn ON the terminal 4 input selection signal (AU). Input to the terminal 4 is enabled.
Turn ON the start switch (STF or STR). [FWD] or [REV] flickers as no frequency command is given.
Acceleration ➔ constant speed
Input 20 mA. The frequency value on the indication increases in Pr. 7 "Acceleration time", and "
appears. [FWD] indicator is lit during the forward rotation, and [REV] indicator is lit during the reverse rotation.
Input 4 mA or less. The frequency value on the indication decreases in Pr. 8 "Deceleration time", and the motor stops
rotating with "
Turn OFF the start switch (STF or STR). [FWD] or [REV] indicator turns OFF.
When both the forward rotation switch (STF) and the reverse rotation switch (STR) are ON, the
motor cannot be started. If both are turned ON while the motor is running, the motor decelerates
to a stop.
Pr. 184 "AU terminal function selection" must be set to "4" (AU signal) (initial value).
Parameters referred to
Pr. 7, Pr. 8
4 - 28
Forward rotation start
Reverse rotation start
(4–20 mA DC)
Frequency setting by analog current input
" (0.00 Hz) displayed. [FWD] or [REV] indicator flickers.
Operate the inverter by using the analog current input
Acceleration time, Deceleration time
AU terminal function selection
" (60.00 Hz)