Hitachi Vector Control with the SJ300 Inverter

(3-2-3) Timing chart
Motor shaft rotates a bit to reverse in case it exceeds the stop position (1 ~ 2 pulses).
Refer to section [2] for adjusting each parameters to get good motor performance.
ORT
input
Motor
rotation
N
Z
A
B
Positioning start signal (Min. ON period = 50ms)
n
MCU recognition
2Hz Orientation
Positioning
completion output
signal (POK)
ON
1 2 n-2 n-1
Start counting the pulses from the falling edge
Œ
•
Ž
•
Fig 5. Timing chart of example 3-2