Mitsubishi Electronics MR-J3 ユーザーズマニュアル
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5. OPERATION
5.6.8 Count type front end reference home position return
POINT
This home position return method depends on the timing of reading Proximity
dog (DOG) that has detected the front end of a proximity dog. Hence, if a
home position return is made at the home position return 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 home position return speed is higher.
dog (DOG) that has detected the front end of a proximity dog. Hence, if a
home position return is made at the home position return 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 home position return 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 is defined as a home position. A home
position return that does not depend on the Z-phase signal can be made. The home position may change if the
home position return speed varies.
(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.
RY(n 2)5 are 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.
Count type dog front end reference
home position return
home position return
Parameter No.PC02
6: Select the count type dog
front end reference.
Home position return direction
Parameter No.PC03
Refer to section 5.6.1 (2) and select the
home position return direction.
home position return direction.
Dog input polarity
Parameter No.PD16
Refer to section 5.6.1 (2) and select the
dog input polarity.
dog 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.
from 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.
has 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.
position return completion.