Cam Axis Current Feed Value Restoration - Mitsubishi Electric MELSEC iQ-R Series Programming Manual

Cam axis current feed value restoration

If "[Pr.462] Cam axis position restoration object (R: D42742+160n/Q: 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.
[Pr.464] Setting method of cam axis
current value per cycle
(R: D42744+160n/Q: 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
(R: D42743+160n/Q: D15103+150n)
0: Previous value
1: Initial setting value of cam
reference position
2: Current feed value
Cam axis current value per cycle
Cam axis current feed value
Cam reference position
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, minor error (error code:
1C29H) 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.
With cam axis current feed value restoration, calculate the cam axis current feed value with the cam position
calculation function (Page 164 Cam Position Calculation Function) or with synchronous control analysis
mode (Page 162 Synchronous Control Analysis Mode) before starting synchronous control. Then start
synchronous control after positioning to the correct cam axis current feed value.
[Md.407] Cam axis current
value per cycle
(R: D39132+32n, D39133+32n/
Q: D13612+30n, D13613+30n)
[Md.408] Cam reference
position
(R: D39134+32n, D39135+32n/
Q:D13614+30n, D13615+30n)
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
(R: D39136+32n, D39137+32n/
Q: D13616+30n, D13617+30n)
7 SYNCHRONOUS CONTROL INITIAL POSITION
7.3 Cam Axis Position Restoration Method
7
159