7 Operation
−41−
7.3 Setting the running speed
Set the operating speed of the motor using the internal speed potentiometer, external
speed potentiometer or external DC voltage. The motor speed range is from 100 to
3000 r/min for the case of the motor alone.
Two running speeds can be set by combining the internal potentiometer and external
potentiometer, or the internal potentiometer and external DC voltage.
Setting by internal potentiometer
This potentiometer is used when running speed setting is not frequently changed, or
when two-step speed switching is performed in combination with external speed
setting.
Adjust the potentiometer using an insulated screwdriver. Clockwise rotation will
increase the set speed. The speed is set to 0 r/min at time of shipment.
When the motor is driven at the speed set by the internal potentiometer, turn on the
INT.VR/EXT input.
When you want to use only the internal speed setting potentiometer to set the
operation speed, you do not have to connect the VRH, VRM and VRL.
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