37
Parameter
External setting method
This parameter is used to select the external analog setting device (external potentiometer or external DC voltage) or
PWM signal input. The external analog setting device is set at the time of shipment.
Selecting the PWM signal input and inputting the PWM signal can also set the rotation speed or the torque limiting
value.
The rotation speed or the torque limiting value changes according to the duty cycle of input PWM signal.
External analog operation speed command gain, External analog operation speed
command oset
If gain and oset are adjusted when the rotation speed is set using the external analog setting device, the slope of the
speed command can be changed, and the speed can nely be adjusted.
Note
The rotation speed corresponding to the voltage value varies depending on the product.
Gain adjustment and oset adjustment for rotation speed
Adjust using the following parameters.
0
External analog
operation speed
command gain
Speed lower limit
Speed upper limit
15
Rotation speed
External analog
command oset
Setting voltage
operation speed
command gain
External analog
operation speed
command oset
= × +
External analog
operation speed
command gain∗
Speed upper limit
Maximum value of setting voltage
=
*
If the motor does not reach the speed upper limit when the
setting voltage is the maximum value, increase the value in the
"External analog operation speed command gain" parameter.
Setting example: When the motor is operated linearly while the maximum rotation speed is set to 1500 r/min
Set a value of 1500 in the "Speed upper limit" parameter rst, and set 300 in the "External analog operation speed
command gain" parameter.
0
5
Setting voltage (VDC)
Rotation speed (r/min)
0
1500
5
0
1500
5
Rotation speed (r/min)
Rotation speed (r/min)
Refer to "How to adjust the speed dierence" on p.26 for how to use the "Analog operation speed command oset"
parameter.
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