Mitsubishi Electric FX3S Series User Manual page 150
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Also See for FX3S Series:
- User manual (216 pages) ,
- Quick start manual (19 pages) ,
- Hardware manual (4 pages)
Table of Contents
FX
/FX
/FX
3S
3G
3GC
Built-in Positioning Functions
2. DOG search function
If the forward rotation limit and the reverse rotation limit are set, the DOG search function can be used for
zero return. The zero return operation depends on the zero return start position.
Reverse rotation
Reverse rotation limit
1) If the start position is before the DOG:
a) When the zero return instruction is executed, zero return will be started.
b) Transfer operation will be started in the zero return direction at the zero return speed.
c) If the front end of the DOG is detected, the speed will be reduced to the creep speed.
d) After detecting the rear end of the DOG, if the first zero-phase signal is detected, the operation will be
2) If the start position is in the DOG area:
a) When the zero return instruction is executed, zero return will be started.
b) Transfer operation will be started in the opposite direction of the zero return direction at the zero return
c) If the front end of the DOG is detected, the speed will decelerate and the operation will stop. (The
d) Transfer operation will be restarted in the zero return direction at the zero return speed (and the
e) If the front end of the DOG is detected, the speed will be reduced to the creep speed.
f) After detecting the rear end of the DOG, if the first zero-phase signal is detected, the operation will be
3) If the start position is in the near-point signal OFF area (after the DOG):
a) When the zero return instruction is executed, zero return will be started.
b) Transfer operation will be started in the zero return direction at the zero return speed.
c) If the reverse rotation limit 1 (reverse rotation limit) is detected, the speed will decelerate, and the
d) Transfer operation will be started in the opposite direction of the zero return direction at the zero return
e) If the front end of the DOG is detected, the speed will be reduced and the operation will be stopped.
f) Transfer operation will be restarted in the zero return direction at the zero return speed. (The
g) If the front end of the DOG is detected, the speed will be reduced to the creep speed.
h) After detecting the rear end of the DOG, if the first zero-phase signal is detected, the operation will be
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PLC User's Manual - Positioning Control Edition
3U
3UC
limit 1
4)
3)
stopped.
speed.
workpiece will come out of the DOG area.)
workpiece will enter the DOG area again).
stopped.
operation will stop.
speed.
(The workpiece will detect the DOG and then come out of the DOG area.)
workpiece will enter the DOG area again.)
stopped.
search engine
6 Mechanical Zero Return - DSZR/ZRN Instruction
Rear end
Front end
DOG
2)
Origin
Operation in
forward rotation
direction
6.2 DOG Search Zero Return (DSZR Instruction)
Zero return
direction
Forward rotation
limit 1
Forward rotation limit
Operation in
reverse rotation
direction
1)
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