sc2-2. Pepperl+Fuchs, sc2-2. Datasheet - Page 20

• Manufacturer Part Number: sc2-2.
• Description: Factory Automation
• Manufacturer: Pepperl+Fuchs

18
Subject to reasonable modifications due to technical advances.
Pepperl+Fuchs Group • Tel.: Germany (06 21) 7 76-0 • USA (330) 4 25 35 55 • Singapore 67 79 90 91 • Internet http://www.pepperl-fuchs.com
In accordance with EN 999, the minimum distance may be calculated by the formula:
Where:
S = the minimum safety distance in mm, i.e. the distance from the hazardous area to the protective field
K = the constant in mm/s for the approach speed
T = the total response time in s,
C = additional distance in mm. This frequently depends on how far a person
According to EN 999, the following heights are recommended for individual beams parallel to the floor if the
risk evaluation permits it:
Table 4.1: Distances between protective beams above the floor
Information
T = t1+t2
t1: response time of the protective device 30 ms
t2: response time of the machine
can enter into the hazardous area before the protective equipment is triggered.
Number of beams
Care should be taken that reflecting objects that could result in mirroring of
an obstruction are not located within the transmitter or receiver lobe (prEN
61496-2).
1
2
Height above the reference level
S = K · T + C
400, 900
in mm
750
Setup and assembly of the light barriers
Copyright Pepperl+Fuchs, Printed in Germany
SC2-2 control unit