
2.PREAPARATIONS FOR OPERATION B-63783EN-1/01
- 302 -
The following shows the deceleration distance at overtravel.
(i) Rapid traverse
T
R
t
2
t
1
V
R
*+L
limit
switch
Command pulse
deceleration
Servo system
delay
t
V
L
1
=V
R
(t
1
+t
2
+T
R
/2+T
S
)-1/6000 [mm, inch]................... (1)
L
1
: Deceleration distance
V
R
: Rapid traverse speed (mm/min or inch/min)
t
1
: Limit switch signal delay time (from limit switch operation to
*+La signal turn off (ms))
t
2
: Receiver delay time 30ms
T
R
: Rapid traverse acceleration/deceleration time constant (ms)
T
S
: Servo system time constant (ms)
NOTE
Servo system time constant TS is 33 msec when the
servo unit is adjusted to the standard setting.
(ii) Cutting feed
T
R
t
2
t
1
V
c
*+L
limit
switch
Command pulse
deceleration
Servo system
delay
t
V
V
C
: Maximum feedrate (mm/min or inch/min)
L
2
: Deceleration distance
L
2
, t2, Same as (i).
L
2
=V
C
(t
1
+t
2
+T
R
/2+T
S
)-1/6000 [mm, inch]...................(2)
- Releasing overtravel
Press the reset button to reset the alarm after moving the tool to the
safety direction by manual operation.