Fagor CNC 8060 - Page 145

Installation manual
CNC 8060
CNC 8065
MACHINE PARAMETERS.
2.
(REF: 1402)
·145·
Machine parameters for the axes. Work sets.
Parameters ACCJERK and DECJERK set the slope of the acceleration and deceleration.
Both parameters help limit the acceleration changes so the machine runs more smoothly
in small speed increments or decrements and with FFGAIN values close to 100%. The lower
the value assigned to these parameters, the smoother the machine response, but the
acc/dec time will increase.
The CNC applies parameters ACCEL and DECEL to the movements in G1, G2 and G3;
movements in G0 depend on parameter G0ACDCJERK. The CNC ignores these parameters
in threading movements (G33) and with HSC FAST.
G0ACDCJERK Meaning.
Yes. Movements in G0 use parameters ACCJERKG0 and DECJERKG0.
No. Movements in G0 use parameters ACCJERK and DECJERK.
Example. Square sine acceleration.
Here are two examples so a stopped axis reaches G00FEED at maximum acceleration in a
particular amount of time (0.5 seconds).
• The axis parameters may be set with maximum acceleration and minimum jerk.
• The axis parameters may be set with less acceleration and greater jerk so the axis can reach
the maximum acceleration faster and it stays longer at maximum acceleration.
va j
t
t
t
tt/2
G00FEED
ACCEL
ACCJERK
tt/2
tt/2
ACCEL = 2 x
G00FEED
60 x 0,5
ACCJERK = 2 x
ACCEL
0,5
v
t
G00FEED
a
t
ACCEL
j
t
ACCJERK
tt/3 tt/3 tt/3
ACCJERK = 3 x
ACCEL
0,5
ACCEL =
G00FEED
60 x 0,5
3
2
x