Parallel approach
Calculation wizard according to EN ISO 13855:2010
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.
Calculation of the minimum distance for area guarding with parallel approach using a safety laser scanner
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The minimum distance SRT is calculated using the following formula: S – Minimum distance between the danger zone and detection point C: = 1200 mm - 0.4 * H Z – Further additional distances with safety laser scanners |
In the case of safety laser scanners, IEC 61496-3 states that additional distances have to be taken into account:
- ZSM for correction of the measurement error. This value is device-dependent and is given in the respective operating instructions. With the Leuze RSL 400 safety laser scanner, a ZSM of 100 mm applies for a protective field radius ≤ 6.25 m and a ZSM of 120 mm for a protective field radius > 6.25 m.
- ZREFL: Avoid using retro-reflectors in the beam plane beyond the protective field boundary. If this is not possible, an additional distance ZREFL of 100 mm must be added.
Note regarding use on automated guided vehicles:
In accordance with EN ISO 3691-4 “Industrial trucks – Safety requirements and verification”, testing of the protective device must also take into consideration the most unfavorable conditions (e.g. load, inclination of the transportation path) in combination with the parameters specified for the truck. The size of the protective field can increase as a result of these requirements.
Calculation of the minimum distance (safety distance) for area guarding with parallel approach using a safety light curtain
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The minimum distance SRT is calculated using the following formula: S – Minimum distance between the danger zone and detection point C – Safety-related constants for taking into account penetration into the danger zone before triggering the protective device. C= 1200 mm - 0.4 * H, CMin = 850 mm H: Height of the protective field above the reference plane Required resolution d with mounting height H: d [mm] ≤ (H/15) + 50 mm Note: Heights > 300 mm are considered as possible for a person to crawl under. |
