Mitsubishi Electronics MR-J3 ユーザーズマニュアル
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5. OPERATION
5.6.7 Dog type rear end reference home position return
POINT
This home position return method depends on the timing of reading Proximity
dog (DOG) that has detected the rear end of a proximity dog. Hence, if a
home position return is made at the creep speed of 100r/min, an error of
dog (DOG) that has detected the rear end of a proximity dog. Hence, if a
home position return is made at the creep speed of 100r/min, an error of
400 pulses will occur in the home position. The error of the home position is
larger as the creep speed is higher.
The position where the axis, which had started decelerating at the front end of a proximity dog, has moved the
after-proximity dog moving distance and home position shift distance after it passed the rear end is defined as
a home position. A home position return that does not depend on the Z-phase signal can be made.
(1) Devices, parameters
Set the input devices and parameters as indicated below.
Item Device/Parameter
used Description
Automatic/manual selection (RYn6)
Turn RYn6 ON.
Manual home position return mode
selection
selection
Point table No. selection 1 to 8
(RYnA to RYnE, RY(n 2)3 to RY(n 2)5)
(RYnA to RYnE, RY(n 2)3 to RY(n 2)5)
RYnA to RYnE, RY(n 2)3 to RY(n 2)5 are
turned off.
turned off.
Remote register-based
position/speed setting
(Only when two stations are
occupied)
position/speed setting
(Only when two stations are
occupied)
Position/speed specifying system selection
(RY(n 2)A)
(RY(n 2)A)
Turn RY(n
2)A ON.
Dog type rear end reference home
position return
position return
Parameter No.PC02
5: Select the dog type rear end
reference.
Home position return direction
Parameter No.PC03
Refer to section 5.6.1 (2) and select the home
position return direction.
position return direction.
Dog input polarity
Parameter No.PD16
Refer to section 5.6.1 (2) and select the dog
input polarity.
input polarity.
Home position return speed
Parameter No.PC04
Set the speed till the dog is detected.
Creep speed
Parameter No.PC05
Set the speed after the dog is detected.
Home position shift distance
Parameter No.PC06
Set when the home position is moved from
where the axis has passed the proximity dog
rear end.
where the axis has passed the proximity dog
rear end.
Moving distance after proximity dog Parameter No.PC08
Set the moving distance after the axis has
passed the proximity dog rear end.
passed the proximity dog rear end.
Home position return acceleration/
deceleration time constants
deceleration time constants
Point table No.1
Use the acceleration/deceleration time
constant of point table No.1.
constant of point table No.1.
Home position return position data Parameter No.PC07
Set the current position at home position return
completion.
completion.