Function library
7-47
L
EDSVS9332P-D21 EN 3.0
7.5.7 Travel range limits
You can prevent the mechanical stops of the limited travel range from being touched by
•
the travel range limit switches (hardware),
•
the position limiting values (software).
9300POS025
S 1S 2 S 3
H o m e p o s i t i o n
L i m i t p o s i t i o n
n e g a t i v e
C 1 2 2 4 C 1 2 2 3
E n d o f t r a v e l s w i t c h
o s i t i v e d i r e c t i o n
P O S - L I M - N E G P O S - L I M - P O SP O S - R E F - M A R K
E n d o f t r a v e l s w i t c h
n e
a t i v e d i r e c t i o n
L i m i t p o s i t i o n
p o s i t i v e
Fig. 7-21 Example of travel range limits
7.5.7.1 End of travel range limit switch
•
The travel range limit switches are connected via the digital input terminals X5/E1 and X5/E2.
•
In the default setting, X5/E1 and X5/E2 are configured for the function block inputs
POS-LIM-POS and POS-LIM-NEG and are LOW active (protected against open circuit).
•
A travel range limit switch indicates the fault P01 or P02 under the following circumstances:
– In program operation if the speed setpoint (POS-NOUT) is unequal 0.
– In manual operation if the drive moves outside the traversing range.
– During homing, if the drive does not reverse when reaching the limit switch.
•
In the event of a failure the drive brakes to standstill using the function “FAIL- QSP” (default
setting); the ramp time “QSP-Tif” can be adjusted under C0105.
Tip!
The travel range limit switches should be mounted in positions that provide enough braking distance
for the drive in the event of a failure.