IDEC SG4 Type 4 Finger & Hand - Manual (Page 11)

Instruction Manual SG4-B Series
7
NOTE: K value is:
2000 mm/s if the calculated value of S is ≤ 500 mm
1600 mm/s if the calculated value of S is > 500 mm
When devices with > 40 mm resolution are used, the height of the top
beam has to be ≥ 900 mm (H2) from machine supporting base while
the height of the bottom beam has to be ≤ 300 mm (H1).
If the safety light curtain must be mounted in a horizontal position
(Fig.4), the distance between the dangerous area and the most
distant optical beam must be equal to the value calculated using the
following formula:
S = 1600 mm/s (t
1
+ t
2
) + 1200 – 0.4 H
where:
S = Minimum safety distance in mm.
t
1
= Response time of the ESPE in seconds
(see section 10 “Technical data”)
t
2
= Machine stopping time in seconds.
H = Beam height from ground. This height must always be less than
1,000
mm.
Fig. 4