Number of beams and beam heights of multiple light beam safety devices for access guarding in accordance with EN ISO 13855
| Number of beams of the protective device | Height of the beams above reference plane |
|---|---|
| 4 | 300, 600, 900, 1200 mm |
| 3 | 300, 700, 1100 mm |
| 2 | 400, 900 mm |
| a = | Safety distance S and DS |
| b = | Height of the lowest beam above the reference level, see table above |
| c = | Height of the highest beam, see table above |
| d = | Measures to prevent access from the sides |
Fig. 4.2.1-6: Safety distance and beam heights of multiple light beam safety devices for access guarding