Omron ACCURAX G5 User Manual page 317

Encoder Output Direction Switching Selection (Pn012)
The corresponding scale for each output type is as follows.
Encoder
Output
Direction
Switching
Selection
(Pn012)
0 Encoder
External
2
scale
1 Encoder
External
3
scale
External Scale Pulse Regeneration Function
Serial Absolute External Scale
Phase Z is output only after the control power supply for amplifier is turned ON and when it
crosses the zero absolute position of the external scale.Based on this position, phase Z is
output at the intervals of phase-A pulse that is set to Pn621.However, if Pn621 = 0, phase Z is
output only at the zero absolute position.
Serial Incremental External Scale
Phase Z is output without dividing the phase Z of the serial incremental external scale.In
addition, take note that there are differences as illustrated in the figure below depending on the
direction passing phase Z.
Phase A
Phase B
Phase Z
*1. Phase-Z position and its relationship with phases A and B vary depending on the scale.
*2. Phase Z is regenerated for 1 pulse.If the width is narrow, the output time can be extended by the External Scale
Phase Z Setting (Pn620).
Accurax G5 AC SERVOMOTOR AND SERVO DRIVE USER'S MANUAL
Output Phase B For forward direction
source logic
Phase
Non-
A
reverse
Phase
B
Phase
A
Reverse
Phase
B
Phase-Z position of external scale*
Operating direction
2
*
6-5 Encoder Dividing Function
For reverse direction
operation
Phase
A
Phase
B
Phase
A
Phase
B
Operating direction
2
*
operation
1
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