YASKAWA E-7-Series SGD7S Product Manual page 215

6.8 Encoder Divided Pulse Output
6.8.1 Encoder Divided Pulse Output Signals
 When Passing the First Origin Signal (Ref) in the Forward Direction and Returning
after Turning ON the Power Supply
Machine position (forward)
Origin detection
position
Origin detection
position
Origin signal (Ref)
 When Passing the First Origin Signal (Ref) in the Reverse Direction and Returning
after Turning ON the Power Supply
Origin detection
position
Origin detection
position
Origin signal (Ref)
 Precautions When Using a Linear Incremental Encoder from Magnes-
cale Co., Ltd.
 Encoder Divided Phase-C Pulse Output Selection
You can also output the encoder's phase-C pulse for reverse movement. To do so, set Pn081
to n.1.
Pn081
Important
6-46
Power ON
Phase C
Machine position (forward)
Power ON
Phase C
Parameter

n. 0
Output phase-C pulses only in the forward
direction.
(default setting)
Output phase-C pulses in both the forward

n. 1
and reverse directions.
Precautions on Setting the Phase-C Pulse Output Selection (Pn081 = n.X)
• If you set Pn081 to n.1 (Output phase-C pulses in both the forward and reverse direc-
tions), the width of the phase-C pulse output may be narrower than the width of the phase-A
pulse.
• There is a difference of 1/8th of the scale pitch in the phase-C detection position for the
encoder's phase-C pulse output position between when Pn081 = n.X is set to 0 (Output
phase-C pulses only in the forward direction) and when it is set to 1 (Output phase-C pulses in
both the forward and reverse directions).
Movement in the forward direction
Pn081 = n. 0
Pn081 = n. 1
Origin
No origin signal (Ref) is output by the external encoder. However, a phase-C
pulse will be output from the SERVOPACK when the motor moves in the
reverse direction, because this is the same position from which a phase-C
pulse was output when the motor moved in the forward direction.
No origin signal (Ref) is output by the external encoder. However, a phase-C
pulse will be output from the SERVOPACK when the motor moves in the
forward direction, because this is the same position from which a phase-C
pulse was output when the motor moved in the reverse direction.
Meaning
One linear encoder pitch
Origin
1/8 linear encoder pitch
S
Time
The second pulse is half as
wide as the phase-A pulse.
Time
The second pulse is half as
wide as the phase-A pulse.
When Enabled
After restart
S
Classification
Setup