Leuze electronic SOLID-2 Series - Page 26

Installation
26 SOLID-2 Leuze electronic
Review-Stand, , 8. April 2015
DEUTSCH ENGLISH FRANÇAIS ITALIANO ESPAÑOL NEDERLANDS
Calculation formula for safety distance S based on EN 999:
Calculation of the safety distance for a Safety Light Curtain with a resolution of up to
40
mm, used to guard access. The safety distance S is calculated as described by
EN
999 according to the formula:
If the resolution is greater than 40 mm for example for SOLID-2 Safety Light Curtains with a
resolution of 90 mm, an additional amount is required:
The safety distance is thus calculated according to the following formula:
Warning!
Please consider the additional safety instructions for access guarding with SOLID-2 in
Chapter 2.5.
S [mm] = K [mm/s] x T [s] + C [mm]
S = Safety distance in mm
K = Approach speed in mm/s
In the close area of 500 mm, the speed is calculated at 2000 mm/s. If the dis-
tance is greater than 500 mm, K can be calculated as 1600 mm/s. In this case,
however, a minimum of 500 mm applies to the safety distance.
T = Total time of the delay in seconds;
Total of:
the response time of the protective device t
AOPD
a)
the response time of the safety interface, if any tI
nterface
b)
and the stopping time of the machine t
Machine
c)
C = 8 x (d-14) in mm
Additional amount depending on the depth of penetration into the protective
field before turning on the AOPD
d = Resolution of AOPD up to a maximum of
40
mm
a)
b)
c)
see Chapter10.2
see specifications of the safety interface
Specifications of the machine or stopping time measurement
S [mm] = 2000 [mm/s] x (t
AOPD
+ t
Interface
+ t
Machine
) [s] + 8 x (d-14) [mm]
C = 850 mm (arm’s length)
S [mm] = 1600 [mm/s] x (t
AOPD
+ t
Interface
+ t
Machine
) [s] + 850 [mm]