YASKAWA SGD7S-1R9D Product Manual page 193

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Note: The count direction (up or down) of the linear encoder determines whether a phase-C pulse is output. The
output of the pulse does not depend on the setting of the movement direction (Pn000 = n.1).
Encoder Model
Interpolator
SL710
PL101-RY
SL720
MJ620-T13
SL730
SR75
SR85
MQ10-FLA
SQ10
MQ10-GLA
 When First Passing the Origin Signal in the Forward Direction and Returning after
Turning ON the Power Supply
The encoder's phase-C pulse (CN1-21 and CN1-22) is output when the origin detection posi-
tion is passed for the first time in the forward direction after the power supply is turned ON.
After that, the phase-C pulse is output whenever the origin detection position is passed in the
forward or reverse direction.
Encoder count-up
direction
Origin detection
position
Power ON
position
Phase-C pulse
output
 When First Passing the Origin Signal in the Reverse Direction and Returning after
Turning ON the Power Supply
The encoder's phase-C pulse (CN1-19 and CN1-20) is not output when the origin detection
position is passed for the first time in the reverse direction after the power supply is turned ON.
However, after the origin detection position is passed in the forward direction and the encoder's
phase-C pulse is output, it will then also be output when the origin detection point is passed in
the reverse direction.
Encoder count-up
direction
Origin detection
position
Power ON
position
Phase-C pulse
output
6.5 Encoder Divided Pulse Output
6.5.1 Encoder Divided Pulse Output Signals
Linear Encoder Pitch [μm]
800
800
800
80
80
400
The SERVOPACK records the position where
the phase-C pulse was output for movement
in the forward direction, and the phase-C
pulse is also output for reverse movement.
Time
The phase-C pulse is not
output when the detection
position is passed in the
reverse direction.
Time
The SERVOPACK records the position where
the phase-C pulse was output for movement
in the forward direction, and the phase-C
pulse is then output for reverse movement.
6
6-21

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