Festo DGE Serie Instrucciones De Utilizacion página 58

DGE−...−ZR/−SP
· Take into account the following plan for positioning the proximity switches:
H
S
W
n
r
O
M Motor
X Interface to emergency stop circuit
Z Interface to controller
W Mechanical end position
S Switching point of the safety limit switches
S Switching point of the hardware limit switches
R Reference point position
O Positioning limits of the software controller
O/2 Stroke centre
d Length of the switching lug
h Stroke reserve: h = n + r
n Controlled braking path
r Distance of the switching point of the safety limit switches from the
mechanical end position.
x Distance of the reference point switch from the end of the stroke reserve
Fig. 29: Schematic distribution of the proximity switches
58
R
x
d
O/2
d > x
S
W d > h
n
r
h=n+r
O
Festo DGE−...−ZR/−SP 0909f English
X
Z