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SF-S55N
b. Operation of push bar in front access mode
3) Push bar motor (M7) control
The push bar motor is a 4-phase control stepping
motor.
The sorter controller PWB sends the drive pulses
(PBMA, PBMA*, PBMB, PBMB*) and the reference
current signal (PBMAJ) to the motor driver. The motor
driver changes ON/OFF and rotation direction of push
bar motor (m7) by controlling the output timing of
pulse signals (A, A*, B, B*) according to signals.
Sorter
controller
PWB
When the push bar motor (M7) is in HOLD state, the
output timing of pulse signals A, A*, B, B* is fixed, and
the level of reference current signal (PBMAJ) is
changed for HOLD.
Bin unit control PWB
Motor drive
pulse
Motor
generating
driver
circuit
9−23
Push bar motor
Push bar home
position sensor
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