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Start and stop using terminals (External operation)
5
5.2.3 Setting the speed by analog input (voltage input/current input)
POINT
y Turn ON the STF(STR) signal to give a start command.
y 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 one of Pr. 178 to Pr. 182.
Operation example Operate at 3000r/min.
Operation
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. 182. (Refer to page 4 to change the setting.)
Turn ON the AU signal.
3.
Start
Turn the start switch (STF or STR) ON.
[RUN] flickers fast because the speed command is not given.
4.
Acceleration Æ 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 lit 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 motor stops rotating with
" " (0r/min)
displayed.
[RUN] flickers fast.
6.
Stop
Turn the start switch (STF or STR) OFF.
[RUN] turns OFF.
REMARKS
y For voltage input, the speed (maximum potentiometer setting) at the full right turn of the (speed setting) potentiometer is
3000r/min in the initial setting. (To change the setting, use Pr.125.) (Refer to page 26.)
y For current input, the speed at 20mA input is 3000r/min in the initial setting. (To change the setting, use Pr. 126.) ( Refer to
Chapter 4 of the Instruction Manual (Applied.))
y To input 10VDC to the terminal 2, set Pr.73 Analog input selection = "0". The initial value is "1 (0 to 5V input)".
( Refer to Chapter 4 of the Instruction Manual (Applied).)
y To always select the External operation mode, set Pr. 79 Operation mode selection = "2 (External operation mode)".
y To use the terminal 4 (4 to 20mA), assign "4 (AU signal)" to one of Pr.178 to Pr.182 (input terminal function selection), and turn the
AU signal ON.
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)