Toshiba G7 - Manual (Page 18)

G7 ASD Multi-Protocol Communication Option and PG Feedback Option Manual 11
The pulse input signals should have the waveform of the figure below in terms of motor rotation
direction. The encoder installation direction and signal wiring should be done accordingly.
Forward rotation or reverse rotation is determined from the quadrature orientation of the Phase A and
Phase B feedback pulses. Therefore, it should be noted that when connections are wrong, there is a
possibility for abnormal rotation of the motor.
A
A
B
B
PGA1
PGA2
PGB1
PGB2
PG
X
2
X
1
X
3
X
4
Phase A
Forward rotation
Phase B
Phase A
Phase B
Reverse rotation
Phase difference：Xn≧0.15T(n=1,2,3,4)
Ｔ
When single-phase PG feedback is used, connect to terminals PGA1 and PGA2 only. The
determination of forward rotation and reverse rotation is impossible: only speed control is applicable.