Mitsubishi Electric RD77MS16, Руководство пользователя

Страница: 35 / 644

2 HOME POSITION RETURN CONTROL
2.2 Machine Home Position Return
33
2
2.2
Machine Home Position Return
Outline of the machine home position return operation
Use the home position return retry function when the home position is not always in the same direction from
the workpiece operation area (when the home position is not set near the upper or lower limit of the machine).
The machine home position return may not complete unless the home position return retry function is used.
Machine home position return operation
In a machine home position return, a home position is established.
None of the address information stored in the Simple Motion module, CPU module, or servo amplifier is used at this time.
The position mechanically established after the machine home position return is regarded as the "home position" to be the
starting point for positioning control.
The method for establishing a home position by a machine home position return differs according to the method set in "[Pr.43]
Home position return method".
The following shows the operation when starting a machine home position return.
1.
The "machine home position return" is started.
2.
The operation starts according to the speed and direction set in the home position return parameters ([Pr.43] to [Pr.57]).
3.
The "home position" is established by the method set in "[Pr.43] Home position return method", and the machine stops.

Page 34 Machine home position return method to Page 42 Scale origin signal detection method
4.
If "a" is set as "[Pr.45] Home position address", "a" will be stored as the current position in the "[Md.20] Current feed
value" and "[Md.21] Machine feed value" which are monitoring the position.
5.
The machine home position return is completed.
M
Home position
Near-point dog
Machine home position return