Safety Distance For Danger Area Guarding - Siemens SIMATIC FS400 Anleitung

6.1.2 Safety distance for danger area guarding

Calculating the safety distance and the resolution required for a light curtain for danger
area guarding.
c
a = Safety distance (S)
b = Measures to prevent access from the sides
c = Height above the floor
d = 50 mm – Maximum distance to avoid walking behind*
Fig. 6.1-2: Safety distance (a) and height (c) for danger area guarding
* If this value cannot be achieved because of the safety distance, other measures, e.g.
mechanical barriers, must guarantee the required maximum distance of 50 mm. From 375 mm
height above the floor 75 mm are permissible.
b
a
d
145