YASKAWA SVC User Manual page 173

4.2 Motion Command Details
4.2.3 ZRET (Zero Point Return)
• Overtravel Signal Detected during Travel at the Creep Speed
N-OT
Information
 Setting Parameters
Register Address

OW

OL

OL

OL
4-30
Phase-C pulse
*2
*1.
SERVOPACK P-OT signal.
*2.
SERVOPACK N-OT signal.
1. The travel distance after the phase-C pulse is detected is the value of the OL42
setting parameter (Zero Point Return Travel Distance). The positioning speed is the
value of the Speed Reference Setting parameter.
2. If an overtravel signal is detected during motion at the creep speed, an overtravel
alarm will not occur. The direction will be reversed, and a search will be performed for
the phase-C pulse.
3. If an overtravel signal is detected when the axis is moving at the positioning speed, an
overtravel alarm will occur.
4. The stop method when an overtravel signal is detected depends on the SERVOPACK
parameter settings.
Name
Zero Point Return
3C
Method
Speed Reference Set-
10
ting
40 Creep Speed
Zero Point Return
42
Travel Distance
Speed Reference Setting
(OL 10)
Zero Point Return
Travel Distance
(OL 42)
Origin Start
Creep Speed
(OL
Setting Details
11: C pulse only
Set the positioning speed to use after the phase-C pulse is
detected. The sign is ignored.
The travel direction depends on the sign of the Zero Point
Return Travel Distance parameter.
Set the speed and direction (based on the sign) to begin the ori-
gin return operation.
Set the travel distance after the phase-C pulse is detected.
The travel direction depends on the sign.
Creep Speed
(OL 40)
40)
*1
P-OT