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Speed setting by analog input (terminal 2, 4)
4
PARAMETERS
4.15.2 Setting the speed by analog input (voltage input/current input)
POINT
Turn ON the STF(STR) signal to give a start command.
Use the potentiometer (speed setting potentiometer) (voltage input) or 4-to-20mA input (current input) to give a
speed command.
[Connection example for voltage input] [Connection example for current input]
The drive unit supplies 5V power to the speed setting
potentiometer. (terminal 10)
Assign the AU signal in any of Pr.178 to Pr.184.
Operation example Operate at 3000r/min.
Operation Display
1. Screen at power-ON
The monitor display appears.
2. Assignment of the AU signal (current
input)
(Refer to the step 3 for voltage input.)
Set Pr.160 to "0" to activate extended parameters.
To assign the AU signal, set "4" in one of Pr.178 to Pr.184. (Refer
to page 51 to change the setting.)
Turn ON the AU signal.
3. Start
Turn the start switch (STF or STR) ON.
The zero speed (0r/min) operation is performed as no speed
command is given.
[RUN] indicator is ON during forward rotation operation and
flickers slowly during reverse rotation operation.
4. Acceleration constant speed
For voltage input, turn the potentiometer (speed setting
potentiometer) clockwise slowly to full.
For current input, input 20mA.
The speed value on the display increases in Pr.7 Acceleration
time, and " " (3000r/min) appears.
[RUN] indicator is ON during forward rotation operation and
flickers slowly during reverse rotation operation.
5. Deceleration
For voltage input, turn the potentiometer (speed setting
potentiometer) counterclockwise slowly to full.
For current input, input 4mA.
The speed value on the display decreases in Pr.8 Deceleration
time, and the zero speed (0r/min) operation is performed as no
speed command is given.
[RUN] indicator is ON during forward rotation operation and
flickers slowly during reverse rotation operation.
6. Stop
Turn the start switch (STF or STR) OFF.
[RUN] turns OFF.
Speed setting
potentiometer
Drive unit
5
10
2
Forward rotation start
Reverse rotation start
STF
STR
SD
Drive unit
5(-)
4(+)
SD
AU signal (terminal RH)
AU signal
Forward rotation start
Reverse rotation start
STF
STR
Current signal
source
(4 to 20mADC)
ON
Forward
rotation
Reverse
rotation
ON
Flickering
Flickering
STOP
OFF
Forward
rotation
Reverse
rotation