Festo Кабели и принадлежности - Manual (Page 66)

4. Commissioning
4−21
Festo P.BE−SPC200−SMX−1−EN en 0503b
1
Starting position
2
Position accepted
as reference
point
3
Switching ranges
of end and
reference
switches
Speeds during reference
travel:
V
Ref
: Reference speed
factor * maximum
speed
SS: Start−stop freĆ
quency
LIM− REF LIM+
Mode 0:
Mode 1:
Case b:
Mode 2:
Mode 3:
Mode 4:
Case a:
Case a:
SS V
Ref
V
Ref SS
SS SS
V
Ref
SS
SS
V
Ref
SS
V
Ref
SS
SS V
Ref
SS
1
2
3 3 3
Case b:
Fig. 4/6: Reference travel modes
After a limit switch fault, the axis loses the reference point.
When the fault has been eliminated, new reference travel
must be carried out with the axis.
If reference travel is started after a limit switch fault (without
Power off/on), the axis will try to leave or find the last actuĆ
ated switch with the start−stop frequency (SS). If the switch is
neither left nor found, the axis will move to the opposite limit
switch.