
3. α SERIES PARAMETER ADJUSTMENT B-65150E/04
− 58 −
3.3.5 Overshoot
When the machine is operated at high speed or with a detection unit of
0.1 µm or less, the problem of overshoots may arises. Select a most
appropriate preventive method depending on the cause of an overshoot.
(Reference: Parameter numbers)
For details, see Chapter 4, "Servo Function Details."
Function 1: Overshoot compensation function
#7 #6 #5 #4 #3 #2 #1 #0
No. 1808 No. 8X03 OVSC
No. 2003 No. 1003
OVSC (#6) 1: Enables the overshoot compensation function.
No. 1970 No. 8X77 Overshoot prevention counter
No. 2077 No. 1077
No. 1857 No. 8X45 Incomplete integral coefficient
No. 2045 No. 1045
#7 #6 #5 #4 #3 #2 #1 #0
No. 1742
−
OVS1
No. 2202
−
OVS1 (#3) 2: Enables overshoot compensation TYPE-2.
<1> When the velocity loop gain is not yet adjusted,
follow the description in Subsec. 3.3.1 to adjust
the gain. Select PI control.
<3> When feed-forward is used, try to adjust the
velocity feed-forward coefficient.
<5> If the overshoot in question is for about one or two
pulses, set overshoot compensation
(TYPE-1 or -2). (Function 1)
<2> When advanced preview control is used, adjust
automatic corner deceleration. Also, increase
settings such as the time constant after
interpolation to allow commands for corner and
stop operations to be executed as moderately as
possible.
<4> Where possible, decrease the position gain and
feed-forward coefficient.