7 Operation
−37−
SPEED output
Pulse signals (pulse width: 0.3 ms) of 30 pulses per revolution of the motor output
shaft are output in synchronism with the motor drive.
Motor speed can be calculated by measuring the SPEED output frequency.
T
0.3 ms
SPEED output frequency =
1
T
Motor speed
∗
[r/min] =
SPEED output frequency [Hz]
30
× 60
∗ The speed of the gear output shaft of a pinion shaft type, geared type or combination type is
obtained by dividing the motor speed by the gear ratio.
ALARM output
The protection function of the driver activates in following cases, and the ALARM
output is turned OFF, thereby stopping the motor.
In this case, you can check the contents of the protection function, which was
operating by the number of LED flashes. The LED lights for 0.3 s and goes off for
0.3 s. After a specified number of flashes, flashing is performed at intervals of 1.5 s.
LED
flashing cycle
[Example: When it flashes 3 times (Motor sensor error)]
OFF
ON
ON
ON
ON
ON
ON
0.3 s
0.3 s
1.5 s
Warning
When the driver’s protection function is triggered, first remove
the cause and then clear the protection function. Continuing the
operation without determining the cause of the problem may
cause malfunction of the motor, leading to injury or damage to
equipment.
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