YASKAWA SVC - Page 173

4.2 Motion Command Details
4.2.3 ZRET (Zero Point Return)
4-30
• Overtravel Signal Detected during Travel at the Creep Speed
*1. SERVOPACK P-OT signal.
*2. SERVOPACK N-OT signal.
 Setting Parameters
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.
Register Address Name Setting Details
OW3C
Zero Point Return
Method
11: C pulse only
OL10
Speed Reference Set-
ting
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.
OL
40 Creep Speed
Set the speed and direction (based on the sign) to begin the ori-
gin return operation.
OL
42
Zero Point Return
Travel Distance
Set the travel distance after the phase-C pulse is detected.
The travel direction depends on the sign.
N-OT
*2
P-OT
*1
(OL40)
(OL42)
(OL10)
(OL40)
Speed Reference Setting
Creep Speed
Zero Point Return
Travel Distance
Creep Speed
Phase-C pulse
Origin Start
Information