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Start and stop using terminals (External operation)
5.2.4 Setting the speed at the maximum potentiometer indication
< How to change the maximum speed>
Changing
example
When you want to use 0 to 5VDC input speed setting potentiometer to change the speed at 5V from 3000r/min (initial value) to
2100r/min, make adjustment to output "2100r/min" at 5V voltage input. Set "2100r/min" in Pr. 125.
Operation
1.
Parameter selection
Turn until " " (Pr. 125) appears.
Press to show the present set value " " (3000r/min).
2.
Changing the maximum speed
Turn to change the set value to " "(2100r/min).
Press to enter. " " and " " flicker alternately.
3.
Mode/monitor check
Press
twice to choose the monitor/speed monitor.
4.
Start
Turn the start switch (STF or STR) ON.
[RUN] flickers fast because the speed command is not given.
5.
Acceleration Æ constant speed
Turn the potentiometer (speed setting potentiometer) clockwise slowly to full.
The speed value on the display increases in Pr. 7 Acceleration time, and " "(2100r/min) appears.
[RUN] indicator is lit during forward rotation operation and flickers slowly during reverse rotation operation.
6.
Deceleration
Turn the potentiometer (speed setting potentiometer) counterclockwise slowly to full.
The speed value on the
display
decreases in
Pr. 8 Deceleration time,
and the motor stops rotating with
"" (0r/min)
displayed
.
[RUN] flickers fast.
7.
Stop
Turn the start switch (STF or STR) OFF.
[RUN] turns OFF.
REMARKS
y Use calibration parameter C2 to set speed at 0V and calibration
parameter C0 to adjust the meter.
(
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 As other adjustment methods of speed setting voltage gain, there are methods to adjust with a voltage applied to across
terminals 2 and 5 and a method to adjust at any point without a voltage applied. ( Refer to Chapter 4 of the Instruction
Manual (Applied) for the setting method of calibration parameter C4.)
Change the speed (3000r/min) at the maximum current input (20mA in the initial setting)
Adjust it with Pr.126 Terminal 4 speed setting gain speed. ( Refer to Chapter 4 of the Instruction Manual (Applied).)
Change the speed (0r/min) at the minimum current input (4mA in the initial setting)
Adjust with the calibration parameter C5 Terminal 4 speed setting bias speed. ( Refer to Chapter 4 of the Instruction Manual
(Applied).)
Initial value
Bias
C2 (Pr. 902)
0
0
Speed
setting signal
100%
10V
05V
C3 (Pr. 902) C4 (Pr. 903)
Gain
Pr. 125
Rotation speed (r/min)
3000r/min