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5.4.8
Calculating the Detection Zone Dimensions for Safeguarding an Area
According to IEC 61496-3 and DIN EN 999, the following formulas apply for calculating
the safety distance and the minimum depth of the detection zone when the direction of
approach runs parallel to the detection zone:
S
=
C
=
S
= Safety distance, minimum distance from the danger zone to the point of
K
= Approach speed of a person or a person's body parts
T
= Lag time of the entire system (response time and braking time until
C
= Safety-related constant to consider entry into the danger zone before the
C
= Minimum value of the safety-related constant (850 mm), in mm
MIN
H
= Height of the scanning plane from the reference point, in mm
H
= Minimum height of the scanning plane from the reference plane,
MIN
H
= Minimum height of the scanning plane from the reference plane,
MAX
d
= Resolution of the scanner (70 mm throughout the detection zone), in mm
42
(K x T) + C
1200 mm – 0.4 H
detection, to the plane of detection, or to the detection zone, in mm
(1600 mm/s), in mm/s
standstill), in s
protective device is triggered, in mm
in mm
in mm
C
= 850 mm
MIN
H
= 15 (d – 50 mm)
MIN
=
H
1000 mm
MAX
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