Cam Axis Current Feed Value Restoration - Mitsubishi Electric Q173DSCPU Programming Manual

8 AUXILIARY AND APPLIED FUNCTIONS

8.6.3 Cam axis current feed value restoration

[Pr.464] Setting method of cam axis
current value per cycle
(D15104+150n)
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
[Pr.463] Setting method of cam reference position
(D15103+150n)
0: Previous value
1: Initial setting value of cam
reference position
2: Current feed value
If [Pr.462] Cam axis position restoration object (D15102+150n) is set to "2: cam current
feed value restoration" when starting synchronous control, the cam axis current feed
value is restored based on the cam axis current value per cycle and the cam reference
position.
Select the method for the cam axis current value per cycle and the method for the cam
reference position to be restored.
[Md.407] Cam axis current value
per cycle
(D13612+30n, D13613+30n)
[Md.409] Cam reference position
(D13614+30n, D13615+30n)
Cam axis current value per cycle
Cam axis current feed value
Cam reference position
(1) Restrictions
The cam axis current feed value moves to its restored value just after starting
synchronous control when the cam axis current feed value to be restored is
different from the current feed value at synchronous control start.
If the difference is larger than "In-position width (PA10)" of servo parameter in
pulse command units, "Major error (error code: 1769)" will occur and
synchronous control cannot be started.
Note that, if the setting value of "In-position width" is large, a rapid operation may
occur.
POINT
With cam axis current feed value restoration, calculate the cam axis current feed
value with the cam position calculation function (Refer to Section 8.8) or with
synchronous control analysis mode (Refer to Section 8.7) before starting
synchronous control. Then start synchronous control after positioning to the correct
cam axis current feed value.
The cam axis current feed value is
restored based on the cam axis current value
per cycle and the cam reference position.
[Md.409] Cam axis current feed value
(D13616+30n, D13617+30n)
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