7. Terminals
4
７．Terminals
7-1 STOP/START (Input)
Turning STOP/START input to Low level (connecting to GND potential) will make the motor start to
run and the driver outputs CLOCK OUT signal to motor.
Turning STOP/START input to High level (open) will make the motor stop and the driver stops to
output CLOCK OUT signal.
7-2 CW/CCW (Input)
Turning CW/CCW to Low level (connecting to GND potential) will make the motor rotate in CCW
direction.
Turning CW/CCW to High level (open) will make the motor rotate in CW direction.
Fig.7 Direction of Rotation
7-3 SPEED H/L (Input)
This input is used for changing speed. Turning this SPEED H/L input terminal to High level (open)
or Low level (connecting to GND potential) will change the frequency to the value set by Low Speed
trimmer or High Speed trimmer.
7-4 FREE (Input)
Stepping motor drive current turns OFF at Low level (connects to GND potential) and the motor
shaft can be rotated by hand.
When turning FREE input to High level (open) again, the motor is excited at the phase home.
NOTE: Do not turn this input ON when motor is running at high speed, this operation would
damage the amplifier circuits.
7-5 CLOCK OUT (Output)
This is a terminal to output clock pulses. One pulse is putout every time a motor rotates one step.
The driver outputs 1 pulse every time the motor rotates by full step (1.8ﾟ).
The duty of output clock pulse is approx. 40 to 60%.
CCW CW
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