Yaskawa MP940 Reference Manual - Manual (Page 465)

Zero-point Return (ZRET) MotionSuite™ MP940 Machine Controller Reference Manual
11-68
• Zero-point Return Reverse Limit Signal (OBC021C)
• Zero-point Return Forward Limit Signal (OBC021D)
Operation in Area (a) at Zero-point Return Operation Start
1. Moves in a positive direction at fast feed speed.
2. Decelerates at the downward transfer of the transition (deceleration LS)
signal.
3. Moves in a reverse direction at approach speed.
4. Decelerates at the upward transfer of the transition (deceleration LS)
signal.
Time
Deceleration
LS
LMT_L ∗1
LMT_R ∗2
High
LOW
High
Low
High
Low
Reverse Forward
Total Range of Machine
Motion
a. b. c. d. e.
Speed
Reference
0
Fast Feed
Speed
Reverse Forward Zero
Poin
t
Creep Speed
Approach Speed
Dog-leg
(Deceleration LS)
Zero Point Signal
(C-phase pulse)
Time
2.
5.
4. 3.
6.
Zero Point
Return
Position
Zero Point Return Final
Run Distance