Parallel approach
Calculation assistant according to EN ISO 13855:2024
The recommendations of this wizard do not lay any claim to being complete. For the safe and correct use and installation of the products, the relevant standards and regulations in their currently valid version must be followed. Leuze electronic GmbH + Co. KG assumes no liability for damage resulting from the use of this wizard or for the accuracy of the generally applicable standards and directives.
S= K x T + DDS + Z
S – Safety distance [mm]
K – Approach speed [mm/ms]
The approach speed K is specified in the standard. If the resulting safety distance is greater than 500 mm, an approach speed of 1,600 mm/s is used. This corresponds to the speed of a person walking. If the resulting safety distance is less than or equal to 500 mm, an approach speed of 2,000 mm/s is used. This corresponds to the speed when operating with the hand or arm.
T – Overall system response time [ms]
DDS – Operating range [mm]
The operating range DDS is a fixed value of 1200 mm for the parallel approach and results from reaching over a protective field. Put simply: If a protective device only detects the legs, you can lean up to 1200 mm over the safety field, bringing your fingers that much closer to the danger zone.
Z – Additional distance factor [mm]
