Protective field and reference contour field for access protection
•
If the reference contour represents the edge of the protected opening, its distance
from the protective field must not exceed 100 mm. A distance equal to the
TZ value is recommended for high availability and sufficient protection. (TZ =
tolerance zone of the safety laser scanner,
.)
•
If the reference contour does not represent the edge of the protected opening, the
protective field must be larger than the protected opening. The required overrun
(o) is calculated using the same formula as for hazardous point protection.
1
2
Figure 18: Tolerance band of the contour as reference field (protective field within the protected
opening, edge of the protected opening = reference contour)
1
Tolerance band of the reference contour field
2
Distance of the protective field from the reference contour, to ensure availability
4.3.5
Hazardous area protection
The safety laser scanner is mounted with a horizontal scan plane in a stationary
application, for example on a machine where the hazardous area is not completely
surrounded by a physical guard. During hazardous area protection, the safety laser
scanner detects a person’s legs. The protective field is parallel to the person’s direction
of approach.
PROJECT PLANNING
4
8017784/1ELL/2022-01-21 | SICK
O P E R A T I N G I N S T R U C T I O N S | microScan3 Core I/O AIDA
27
Subject to change without notice
