16
It is thus important to position the safety light curtain according to the minimum distance from reflecting
surfaces.
The minimum distance depends on:
•
operating distance between active and passive units.
•
real aperture angle of ESPE (EAA); especially:
•
for ESPE type 4
EAA
MAX
= 5° (
α = ± 2.5°)
Diagram of Figure 15 shows the minimum distance from the reflecting surface (D
sr
) based on the operating
distance for a Type 4 ESPE:
0.5
3
8
0.15
0.35
ESPE Type 4
Operating distance (D
op
)
m
m
6.5
0.3
M
in
im
um
d
is
ta
nc
e
fr
om
r
ef
le
ct
in
g
su
rf
ac
es
(
D
S
R
)
Figure 15
The formula to get D
sr
for a Type 4 ESPE is the following:
D
sr
(m) = 0.15 for operating distance < 3 m
D
sr
(m) = 0.5 x operating distance (m) x tg 2
for operating distance
3 m
Even in presence of beam interruption due to reflecting objects, the correct device functioning is guaranteed
and certified up to a maximum operating distance of 6.5m for SG4-RB4-090 model, or 8 m for SG4-RB2-050,
SG4-RB3-080, SG4-RB4-120 models. The use of the device at higher distances, when possible, is however
not recommended. If used, the user must check the correct functioning verifying that no dangerous
reflections towards the receiving optics are generated by shiny objects (Figure 16).
reflecting
object
RX
TX
Figure 16
Содержание SG4-RB2-050-OO-W
Страница 1: ......
Страница 3: ......
Страница 7: ......
Страница 73: ...66 SG4 RB2 3L SG4 RDB2 3L...
Страница 74: ...SG BODY REFLECTOR MUTING 67 SG4 RB2 3T SG4 RDB2 3T...
Страница 91: ...84 ACTIVE PASSIVE...
Страница 92: ...SG BODY REFLECTOR MUTING 85 ACTIVE PASSIVE...
Страница 95: ...88...