Machine End Stopper Method Automatic Initialization - Mitsubishi Electric C70 Setup Manual

7.3.3.2 Machine End Stopper Method Automatic Initialization

This method, with which the axis is pushed against the machine end stopper, is available when "INIT-SET" can be
selected for the operation mode. (Sequence programs are required.))
This method has the following features compared to the manual initialization method:
- The axis is pushed with the same conditions (feedrate, distance) each time, so inconsistencies in the zero point
position can be more reduced.
- Part of the operations are automated to simplify the zero point initialization.
Basic machine
coordinate system
zero point
Reference position return
parameter "#2037 G53ofs"
#2 "ZERO"(when "#2059 zerbas" is set to "1")
#2 "ZERO"(when "#2059 zerbas" is set to "0")
(1) Display [ABS SERVO MONITOR] screen from [TOOL PARAM].
(2) Set the current (torque) limit value when the axis is pushed against the machine end stopper to the
parameter"#2054 clpush Current limit(%)". Also set the parameter "#2055 pushf Pushing speed" and "#2056 aproch
Approach point".
The setting values differ according to the machine specifications. Set the appropriate value in accordance with the
machine specifications.
(Note) Setting the excessive value may cause damage to the machine, as well as the warning and alarm.
Setting too small value may cause the unsuccessful detection of stopper, because the system will identify
the machine's friction load.
Start
Axis movement
Reference
position
The parameter "#2059 zerbas" decides the absolute position basic point.
0: Position where the axis was stopped
1: Grid point just before stopper (electrical basic position)
7.3 Adjustment in Absolute Position Detection System
(a)
Machine end stopper
(b)
(c)
(e) (d)
Electrical
basic position
Position where the axis
Machine end
was stopped
#2056 aproch
C70 Setup Manual
Coordinate
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