Mitsubishi Electric C70, Setup Manual

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7 Setting the Position Detection System
MITSUBISHI CNC
122
7.3.3 Dogless-type Absolute Position Zero Point Initialization Set
7.3.3.1 Machine End Stopper Method Manual Initialization
Use GOT project controlled by sequence programs, switches on the machine operation panel, a manual handle, and the
[ABS. POSITION SET] screen in the CNC monitor on GOT for the absolute position zero point initialization set. The GOT
project and panel switches are made by the machine tool builder.
(1) Display [ABS SERVO MONITOR] screen from [TOOL PARAM].
(2) Set the current (torque) limit value for when the axis is pushed against the machine end stopper to "#2054 clpush
Current limit(%)".
The value to set is the ratio of the rated current value of servomotor. Set the appropriate value in accordance with
the machine specifications.
(Note) Setting the excessive value may cause damage to the machine, as well as overload warning and
overcurrent alarm. Setting too small value may lead to the incorrect detection of stopper since the system
will identify the machine's friction load.
Reference
position
#2 "ZERO"(when " #2059 zerbas " is set to "1")
Start
Machine
end
Axis movement
Coordinate
(8)
(11)(10)(9)
Basic machine
coordinate system
zero point
Reference position return
parameter "#2037 G53ofs"
#2 "ZERO"(when " #2059 zerbas " is set to "0")
Electrical
basic 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)
Position where the axis
was stopped
Input Area Input Area