Inovance H3U Series - Page 402

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6
6 Positioning and Interpolation DSZR: DOG search return to origin
3) DOG search
When DSZR with DOG search is executed when forward and reverse rotation limits are designed. At this
time, the zero return action is subject to the corresponding start position of zero return.
Origin
Forward
rotation action
Reverse
rotation
action
Forward
rotation limit
1 (forward
rotation
stroke end)
Reverse
rotation limit
1(reverse
rotation
stroke end)
Origin regression
direction
BackendFront end
DOG
2 134
a) When the start position is before DOG (including the case when the forward rotation limit 1 is
set to ON):
① The system executes the zero return instruction to start the zero return action.
② The system moves to the zero return direction at the zero return speed.
③ The system decelerates to the creep speed upon detecting the DOG frontend.
④ After detecting the DOG backe
nd, the system stops upon detecting the rst origin signal.
b) When the start position is within the DOG:
① The system executes the zero return instruction to start the zero return action.
② The system moves to the direction opposite to the zero return direction at the zero return
speed.
③ The system decelerates to stop upon detecting the DOG frontend. (Leaving DOG)
④ The system moves to the zero return direction at the zero return speed. (Entering DOG
again)
⑤ The system decelerates to the creep speed upon detecting the DOG frontend.
⑥ When detecting
the DOG backend, the system stops upon detecting the rst origin signal.
c) When the start position is after the DOG (the near point signal is set to OFF):
① The system executes the zero return instruction to start the zero return action.
② The system moves to the zero return direction at the zero return speed.
③ The system decelerates to stop upon detecting the reverse rotation limit 1 (reverse rotation
limit).
④ The system moves to the direction opposite to the zero return direction at the zero return
speed.
⑤ The system decelerates to stop upon detecting the DOG frontend. (Detecting [leaving]
DOG)
⑥ The system moves to the zero return direction at the zero return speed. (Entering DOG
again)