Dog Type Rear End Reference Home Position Return - Mitsubishi Electric MELSERVO-J2-Super Series Instruction Manual

5. OPERATION

5.4.7 Dog type rear end reference home position return

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) Signals, parameters
Set the input signals and parameters as indicated below.
Item
Manual home position return mode
selection
Dog type rear end reference home
position return
Home position return direction
Dog input polarity
Home position return speed
Creep speed
Home position shift distance
Moving distance after proximity dog Parameter No.43
Home position return acceleration/
deceleration time constants
Home position return position data
POINT
This home position return method depends on the timing of reading
Proximity dog (RYn3) 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 200 pulses will occur in the home position. The error of the home
position is larger as the creep speed is higher.
Device/Parameter used
Automatic/manual selection (RYn6) Turn RYn6 ON.
Point table No. selection 1 (RYnA)
Point table No. selection 2 (RYnB)
Point table No. selection 3 (RYnC)
Point table No. selection 4 (RYnD)
Point table No. selection 5 (RYnE)
Parameter No.8
Parameter No.8
Parameter No.8
Parameter No.9
Parameter No.10
Parameter No.11
Point table No.1
Parameter No.42
Turn RYnA OFF.
Turn RYnB OFF.
Turn RYnC OFF.
Turn RYnD OFF.
Turn RYnE OFF.
5: Select the dog type rear end reference.
Refer to Section 5.4.1 (2) in this section and
select the home position return direction.
Refer to Section 5.4.1 (2) in this section and
select the dog input polarity.
Set the speed till the dog is detected.
Set the speed after the dog is detected.
Set when the home position is moved from where
the axis has passed the proximity dog rear end.
Set the moving distance after the axis has passed
the proximity dog rear end.
Use the acceleration/deceleration time constant
of point table No. 1.
Set the current position at home position return
completion.
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