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Normal approach for lightgrids:(resolution: > 70 mm)The minimum safety distanceS is calculated using thefollowing formula:S = 1600 T + 850For safety guards withmultiple beams, height H (mm)above the reference floor ofthe individual beams must beNumber Height above theof beams reference floor2 400, 9003 300, 700, 11004 300, 600, 900,1200applied in the following way:When using light curtains orlight grids, particular attentionmust be paid to the tamperingpossibilities of the safetyguard and to the mechanicalrisks (e.g. crushing, shearing,cutting, ejection).Horizontal approach forlight curtains/grids(resolution: > 50 mm)The minimum safety distanceS is calculated using thefollowing formula:S = 1600 T + 1200 – 0.4 HHere, Smin is 850 mm.The lowest authorised heightH depends on the resolution Dof the light curtain:H = 15 (D-50)For this type of safety guard,the maximum height H is 1000mm.In the risk analysis, specialattention must be paid to theprevention of unintentionalundetected access fromunderneath the protectionfield.Further calculation examplescan be found in DIN EN 999as well as in the mountinginstructions of the SLC/SLGsafety sensors.Danger pointDanger pointLight curtain/gridDirection ofapproachDirection ofapproachReference floorLight curtain/gridReference floor8271