12
Operation
The timing chart below shows an example of switching between two speed levels when the high speed and
low speed are selected via the internal and external speed potentiometers, respectively (see page 15).
NOTE
●
The braking function (current through the motor) is only active for approximately 0.4 second after the
Run/Brake input is turned ON. Do not switch any switches for 0.5 second after turning the Run/Brake
input to ON. Otherwise, damage to the speed controller may result.
■
Run/Brake, Stop
Setting SW2/SW3 to
“
Run
”
(OFF) causes the motor to
rotate at the speed set via the speed potentiometer.
Setting SW2 to
“
Brake
”
(ON) during operation causes
the motor to stop immediately.
Setting SW3 to
“
Stop
”
(ON) during operation causes
the motor to coast to a stop.
■
Switching the direction of rotation
SW4 is used to switch the motor’s direction of rotation.
When SW4 is set to CW, the motor rotates in the clockwise direction, as seen from the motor’s output shaft
side.
When SW4 is set to CCW, the motor rotates in the counterclockwise direction, as seen from the motor’s
output shaft side.
The rotating direction of the gear output shaft is opposite that of the motor shaft, depends on the gear ratio.
NOTE
●
Be sure to connect a surge suppressor to SW4. Failure to do so may damage the speed controller.
Oriental Motor also provides an optional
EPCR1201-2
CR circuit for surge suppression.
●
Instant switching between forward and reverse operations is possible with a reversible motor.
●
For bi-directional operation of an induction motor, switch the rotating direction after the motor has
come to a complete stop.
Acceleration/
Deceleration operation
Switching between
two speed levels/Stop
Run/Stop immediately
CW (Clockwise direction)
CCW
(Counter-clockwise
direction)
Motor operation
Internal/
External speed
setting
Case where the acceleration and deceleration times are set longer by turning each potentiometer clockwise.
CW/CCW input
Run/Stop input
SW3
SW4
SW2
Run
Run
Run
Run
Brake
Brake
Run
Stop
Stop
High speed
High speed
Low speed
CW
Internal
Internal
External
External
Internal
CW
CCW
EXT
INT
CCW
CW
ON
OFF
ON
OFF
Power supply
SW1
OFF
ON
Run/Brake input
Low speed
∗
1
∗
1
If SW2 and SW3 are turned to ON simultaneously, the brake input will take priority.
∗
2
∗
2
∗
2
0.5s min.
Run/Stop input Run/Brake input Motor operation
OFF
OFF
Runs
OFF
ON
Stops immediately
ON
OFF
Coasts to a stop
