Leuze electronic MLC 500 Original Operating Instructions page 25

Calculation of safety distance S
Calculation of safety distance S
S [mm]
RO
K [mm/s]
T [s]
t [s]
a
t [s]
i
t [s]
m
C [mm]
RO
1 Safety sensor
2 Danger zone
3 Floor
a Height of the point of operation
b Height of the upper beam of the safety sensor
Fig. 6.1: Additional distance to the safety distance when reaching over and under
Tab. 6.1: Reaching over the vertical protective field of electro-sensitive protective equipment(excerpt from
ISO 13855)
Height a Height b of the upper edge of the protective field of the electro-sensitive protective
of the equipment
point of
900
opera-
tion
Additional distance C
[mm]
2600 0
2500 400
2400 550
2200 800
Leuze electronic
acc. to ISO 13855 when protective field is accessed from above:
Ro
for point of operation guarding
Ro
= Safety distance
= Approach speed for point of operation guarding with approach reaction and normal approach di-
rection to the protective field (resolution 14 to 40 mm): 2000 mm/s or 1600 mm/s, when
S > 500 mm
RO
= Total time of the delay, sum from (t
= Response time of the protective device
= Response time of the safety relay
= Stopping time of the machine
= Additional distance in which a body part can move towards the protective device before the pro-
tective device triggers: value (see the following table "Reaching over the vertical protective field
of electro-sensitive protective equipment (excerpt from ISO 13855)").
1
C
RO
KxT
S
RO
1000 1100 1200
to the danger zone [mm]
RO
0 0 0
400 350 300
550 550 500
750 750 700
+ t + t )
a i m
2
1300 1400 1600
0 0 0
300 300 300
450 450 400
650 650 600
MLC 520 Host/Guest
3
1800 2000 2200
0 0 0
300 250 150
400 300 250
550 400 250
Mounting
2400 2600
0 0
100 0
100 0
0 0
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