10. Spindle Functions
10.5 Spindle/C Axis Control
155
(Note)
For axis commands, the reference position return complete is checked at calculation.
Thus, when the C axis servo ON command and C axis command are continuous, the
program error (P430) occur as shown above in
∗
2.
In response to this kind of situation, the following two processes must be carried out
on user PLC, as shown above in
∗
1.
•
Input the recalculation request signal with a servo ON command.
•
Wait for the completion of the servo ON command until the C axis enters a servo
READY state.
(3) C axis gain
The C axis gain is changed over (the optimum gain is selected) by the C axis cutting condition.
During C axis cutting feed, cutting gain is applied. During other axis' cutting feed (C axis face
turning), non-cutting stop gain is applied. Non-cutting gain is applied in all other cases.
Z axis command
(other part system)
X axis command
(C axis part system)
Selected gain
C axis command
Non-cutting gain
Non-cutting gain
Non-cutting gain
Cutting stop gain
Cutting gain
G1
G1
G1
G0
G0
G1
G0
G0
(Note 1)
The cutting feed of other part systems does not affect the C axis gain selection.
(Note 2)
There are 1st to 3rd cutting gains, which are selected with the ladder.
(4) Deceleration check in movement including spindle/C-axis
The deceleration check in a movement command including the spindle/C-axis is as the table
described below when the following condition is fulfilled.
When the different values are set for the position loop gain in non-cutting mode (spindle
parameter #3203 PGCO) and the position loop gain in cutting mode (spindle parameter
#3330 PGC1 to #3333 PGC4).
That is because a vibration and so on occurs in the machine when the gain is changed during
the axis movement.
Parameter
Rapid traverse
command
Parameter
Other than rapid traverse command
(G1 : other than G0 command)
Inpos
(#1193)
G0
→
XX
(G0+G9
→
XX)
AUX07/BIT-1
(#1223/BIT-1)
G1+G9
→
XX
(G1+G9
→
XX)
G1
→
G1
0
Command
deceleration
check
0
1
In-position
check
1
In-position
check
(Applicable only
to SV024)
No deceleration
check
(Note 1)
When G1 command is issued, the in-position check is performed regardless of the
deceleration check parameter.
(Note 2)
XX expresses all commands.