YASKAWA SGMSV - Page 286

8 Fully-closed Loop Control
8.1.6 Precautions When Using an External Incremental Encoder by Magnescale
8-10
 External Encoder with Multiple Zero Points and Passing First Zero Point in Reverse
Direction after Power ON
When you use an external encoder with multiple zero points, each zero point operates in the same manner as
described in 9.1.6
 Passing First Zero Point in Reverse Direction and Returning after Power ON.
To output the encoder dividing phase-C pulse when moving in the reverse direction, set Pn081 to n.1.
<NOTE>
The encoder output pulse is output in the forward and reverse directions regardless of the setting of Pn081
when a serial converter unit is used.
Parameter Meaning When Enabled Classification
Pn081
n.0
[Factory Setting]
Outputs phase-C pulse only in forward direction.
After restart Setup
n.1
Outputs phase-C pulse in forward and reverse
direction.
Zero point 1
detection position
Zero point 3
detection position
Zero point 2
detection position
Scale count-up
direction
Power ON Time
Phase-C pulse
output
Zero point 1 Zero point 3Zero point 2
Zero point 2
Zero point 2
Phase-C pulse is not output when passing
a zero point in reverse direction.
Zero point 3