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Chapter 5 Synchronous Control Initial Position
Example
The following shows an example of restarting the cam (a cam similar to a cam with a linear
feed where two identical positioning points do not exist on the cam) from the feed current
value after a forced stop, when the forced stop has stopped operation.
If the following settings are used in a two-way cam or a cam where identical positioning
points exist on the same cam, similar to the cam axis current value per cycle restoration
operation (Refer to Section 5.3.1), the first matching feed current value (outward route) is
restored, therefore restoration may start from an unintended cam pattern position. To avoid
restoring the first matching feed current value, use cam axis feed current value restoration
(Refer to Section 5.3.3).
Setting item
Setting value
[Pr.439] Cam axis length per cycle
1000 [PLS]
[Pr.441] Cam stroke amount
200 [PLS]
[Pr.462] Cam axis position restoration object
0: Cam axis current value per cycle restoration
[Pr.463] Setting method of cam reference position
1: Initial setting value of cam reference position
[Pr.464] Setting method of cam axis current value per cycle
0: Previous value
[Pr.467] Cam reference position (Initial setting)
0 [PLS]
[Pr.468] Cam axis current value per cycle (Initial setting)
0 [PLS]
• Synchronous control operation
Feed current value [PLS]
Feed current value after free run
Forced stop occurred during operation, and the cam decelerates to a stop.
(Synchronous control mode is cancelled)
Time [ms]
0
123
• Restore operation at restart of synchronous control
Feed current value [PLS]
Cam axis current
value per cycle [PLS]
Cam reference position
= 0 [PLS]
Cam is determined to restart at the position where cam axis
current value per cycle is "Feed current value = 123 [PLS]".
Time [ms]
Time [ms]
0
123
1000
200
0
Содержание LD77MH
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Страница 48: ...1 16 Chapter1 Outline of Synchronous Control MEMO ...
Страница 84: ...2 36 Chapter 2 Input Axis Module MEMO ...
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