YASKAWA MP2100 Series User Manual page 230

(f) POT & C Pulse Method
Travel is started at the approach speed in the positive direction until the stroke limit is reached. When the
POT signal is detected, the direction is reversed to return at creep speed. When the phase-C pulse is detected
during the return after passing the POT signal, positioning is performed. When positioning has been com-
pleted, a machine coordinate system is established with the final position as the zero point.
The moving amount after the phase-C pulse is detected is set in the Home Offset. The positioning speed is set
in the Speed Reference. If a negative value is set for the approach speed, the command will end in an error. If
an OT signal is detected during the positioning speed operation, an OT alarm will occur.
Start
*2
NOT
* 1. The SERVOPACK P-OT signal.
* 2. The SERVOPACK N-OT signal.
Note: The stopping method when the OT signal is detected depends on the setting of
SERVOPACK parameters.
Parameter
OW 3C Home Return Type
OL 10 Speed Reference
OL 3E Approach Speed
OL 40 Creep Speed
OL 42 Home Offset
Approach Speed
Zero Point
Name
12: POT & C pulse Method
Set the positioning speed to use after detecting the phase-C pulse.
The sign is ignored. The travel direction will depend on the sign of
the Home Offset.
Set the speed to use when starting a zero point return. Add a sign so
that the travel direction will be positive.
Set the speed to reverse at after detecting the POT signal. The sign is
ignored. The travel direction will be negative.
Set the travel distance from the point where a phase-C pulse is
detected. The travel direction will depend on the sign.
8.4 Zero Point Return (ZRET)
(OL 3E)
Phase-C pulse
Home Offset
(OL 42)
Positioning Speed
(OL 10)
Setting
Creep Speed
(OL 40)
*1
POT
8
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