Cam Reference Position Restoration - Mitsubishi Electric QD77MS User Manual

5.3.2 Cam reference position restoration

If "[Pr.462] Cam axis position restoration object" is set to "1: cam reference position
restoration" when starting synchronous control, the cam reference position is restored based
on the cam axis current value per cycle and the cam axis feed current value.
Select the method for the cam axis current value per cycle to be restored. The feed current
value when starting synchronous control is used as the cam axis feed current value.
Pr.464 Setting method of cam axis
0: Previous value
1: Initial setting value of cam axis
current value per cycle
2: Current value per cycle
after main shaft gear
3: Current value per cycle after
auxiliary shaft gear
Md.20
(At synchronous control start)
Example
The following shows an example of starting operation from a position of "cam axis current
value per cycle=0" by restoring the cam reference position when starting from "feed current
value=0 [pulse]", in the cam when the cam data starting point is not 0.
[Pr.439] Cam axis length per cycle
[Pr.441] Cam stroke amount
[Pr.462] Cam axis position restoration object
[Pr.463] Setting method of cam reference position
[Pr.464] Setting method of cam axis current value per cycle
[Pr.467] Cam reference position (Initial setting)
[Pr.468] Cam axis current value per cycle (Initial setting)
current value per cycle
Feed current value
Cam axis current value per cycle
Cam axis feed current value
Cam reference position
Setting item
Chapter 5 Synchronous Control Initial Position
Md.407 Cam axis current
value per cycle
Md.409 Cam axis feed
current value
Restored by the equation of
"Feed current value - Cam axis current value per cycle"
5 - 17
The cam reference position is restored
based on the cam axis current value per
cycle and the cam axis feed current value.
Md.408 Cam reference position
Setting value
1000 [PLS]
200 [PLS]

1: Cam reference position restoration

None
1: Initial setting value of cam axis current value
per cycle
None
0 [PLS]