Wenglor SEFG Muting, Руководство по эксплуатации

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Safety Light Curtain 61
Calculating the minimum distance
d ≥ v × (t
ESPE
+t
MS
)
d [m] Minimum distance between the detection points of the MS and the safety field of the
ESPE (see
Figure 4)
v [m/s] Speed of the material on the conveyor line
t
ESPE
[s] Processing time muting signals
Is the time required by the ESPE for processing all muting signals. The value can be
found in the technical data
Section 4.1, page 15 .
t
MS
[s] Response time MS
ATTENTION!
• The calculated distance value does not refer to the intersection point of MS1 and MS2, but
to the detection point of the sensor on the object.
• The distance of the intersection point of the MS from the safety field of the ESPE must
be less than 200 mm and must be within the danger zone . It must be kept as small as
possible.
• To prevent manipulation with the feet, the intersection point of the MS must be at the
height of the lowest beam of the ESPE or higher.
• MS1 and MS2 should be mounted at different heights where possible to make manipula-
tion more difficult.
Example:
• Belt speed v = 0.5
• Processing time muting signals t
ESPE
= 95 ms
• Response time MS t
MS
= 1 ms
d ≥ v × (t
ESPE
+t
MS
) = 0.5 × (0.095+0,001)s = 0.048 m
The minimum distance of the two detection points on the object from the ESPE safety field is 48 mm. De-
pending on the width of the muting object, the two sensors must be positioned under the following condi-
tions:
• MS1 and MS2 detect the object at a minimum distance of d = 48 mm
• The intersection point of MS1 and MS2 is located as close as possible to the safety field of the ESPE, but
no more than 200 mm away.