Manual Control; Mechanical Zero Return Control; Outline Of Mechanical Zero Return Control - Mitsubishi FX3U-20SSC-H User Manual

FX -20SSC-H Positioning Block User's Manual
3U
8.

Manual Control

8.1

Mechanical Zero Return Control

8.1.1

Outline of mechanical zero return control

The mechanical zero return method for the 20SSC-H includes the following three variations (four modes).
• DOG type mechanical zero return (1 mode)
The position after stopping from the DOG signal with the zero signal of the servomotor becomes the zero-
point.
• Data-set type mechanical zero return (1 mode)
The position after moving with the JOG operation or manual pulse generator is defined as the zero-point.
• Stopper type mechanical zero return (2 modes)
The stopper position is defined as the zero-point.
1. Mechanical zero return operation
The mechanical zero return operation varies according to the zero return mode. For details, refer to the
following.
1) Turn the mechanical zero return command from OFF to ON to execute mechanical zero return.
2) After calibrating the zero-point, the mechanical zero-point address from the positioning parameters is
written to the current address.
3) The zero return complete flag turns ON.
Note
• The zero return command is not accepted if the zero-point pass signal servo status is OFF.
Before executing zero return, be sure to rotate the servomotor at least once to turn the zero-point pass
signal ON. The zero-point pass signal turns ON when the motor passes the motor reference position signal
(Z-phase).
To execute zero return immediately after power-on, specify "1: Motor Z-phase pass unnecessary after
power-on" (default setting) at the servo parameter function selection C-4. With this setting, the zero-point
pass signal turns ON even if the motor does not pass the zero-point (Z-phase).
• With the simultaneous start flag ON, the X-axis mechanical zero return command simultaneously starts the
X and Y-axes mechanical zero return operation.
(The 20SSC-H ignores the Y-axis mechanical zero return command.)
2. Zero return complete flag
The zero return complete flag turns ON (sets) when the mechanical zero return operation finishes. It turns
OFF (resets) when reactivating the mechanical zero return command, or when turning the power OFF.
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→ For related parameters, control data and monitor data, refer to Subsection 8.1.5
→ For details on the DOG type mechanical zero return, refer to Subsection 8.1.2
→ For details on the data-set type mechanical zero return, refer to Subsection 8.1.3
→ For details on the stopper type mechanical zero return, refer to Subsection 8.1.4
→ For details on the DOG type mechanical zero return, refer to Subsection 8.1.2
→ For details on the data-set type mechanical zero return, refer to Subsection 8.1.3
→ For details on the stopper type mechanical zero return, refer to Subsection 8.1.4
8 Manual Control
8.1 Mechanical Zero Return Control