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5. OPERATIONAL FUNCTIONS
5.5.13 Home position return using a scale home position signal detection method 2
Home position return is performed using a home position signal (Z-phase) on a linear scale. Move in the
opposite direction of the home position and the position where a home position signal is detected is defined to
be the home position. When multiple home position signals in the linear scale, the nearest home position signal
in the opposite direction of home position return direction is defined as the home position.
Creep speed
(Note 1, 2)
Limit switch
Speed
Home position
signal (Z-phase)
Home position return speed
Home position return direction
Start operation
Home
position
Note 1. The amount of home position offset is set to the amount of shift in the home position (parameter No.0248, 0249).
2. If the amount of shift in the home position is 0, the servo stops on the Z-phase.
3. When a limit switch signal is detected, an alarm occurs and execution of return to home position is terminated.
Set the home position signal before the limit switch signal.
4. Start position is needed to be adjusted with a user program so that the Z-phase is passed.
5. When there are multiple Z-phase, start position is needed to be adjusted with a user program so that the reference Z-
phase is passed first.
6. Z-phase mask function cannot be used.
7. The servo returns to Z-phase after detecting the Z-phase, movement direction is reversed, which is different from
home position return using a Z-phase detection method.