Yaskawa MP940 Reference Manual - Manual (Page 461)

Zero-point Return (ZRET) MotionSuite™ MP940 Machine Controller Reference Manual
11-64
See the section on “Zero-Point Return Mode” for details.
• Set the zero-point return format by numbers 0 ~ 7 in fixed motion param-
eter 31 “Zero-Point Return Method”.
The details of each method are shown below.
DEC1+C-phase Pulse Format
Executes zero-point return using a limit switch (deceleration LS) and a
zero-point signal (c-phase pulse) after fast feed by linear accel/decel (with
a transition band).
Limit switches are used with the following machine configurations.
Deceleration
LS
Deceleration
LS
0: Disabled
1: Enabled
(B Contact)
(A Contact)
High Deceleration
LS
Machine Full
Operation Range
Low
Speed
Reference
0
Fast Feed
Speed
Forward Reverse Zero
Point
Creep Speed
Approach Speed
Dog-leg
(Deceleration LS)
Zero Point Signal
(C-phase pulse)
Time
Zero Point
Return
Position
Zero Return Final Run Distance
1. 2. 3. 4.