SICK TiM361S

8.3 Protection tasks
People approach the monitoring plane parallel or orthogonally, depending on the orien‐
tation of the protective field in your application.
•
Hazardous area protection (horizontal): Typically, for a horizontal approach, the
requirement is to detect the leg. The typical object resolution is the leg (70mm).
•
Access protection (vertical): Typically, for access protection, the requirement is to
detect a person. The typical object resolution is the body (200mm).
•
Hazardous point protection (vertical): Typically, for hazardous point protection, the
requirement is to detect a hand. The typical object resolution is the hand (40mm).
Contour as Reference monitoring
If the monitoring plane has a vertical alignment, a contour (such as the floor, a part of
the machine bed, or an access threshold) must typically be defined and monitored as a
reference contour.
Object resolution
The object resolution defines the size that an object must be to allow it to be reliably
detected.
Typical object resolutions are:
•
40mm = hand detection/arm detection
•
50mm = leg detection/arm detection
•
70mm = leg detection
•
200mm = body detection
The object resolution affects the available protective field range. The finer the desired
object resolution, the shorter the available protective field range.
Further necessary safety-related parameters can be derived from the protection task,
object resolution, and the application-specific constraints, for example:
•
Minimum distance
•
Height of the scan plane
•
Protective field lengths
•
Protective field widths
•
Height of barriers
These parameters must be determined for each specific application. The safety-related
technical data of the device, and the requirements of relevant national and interna‐
tional standards (e.g., ISO 13855, ISO 13857,...) must be taken into consideration
when doing so.
8.4
Preventing unprotected areas
WARNING
Risk of ineffectiveness of the protective device!
Persons and parts of the body to be protected may not recognized in case of non-obser‐
vance.
•
Make sure that the following design requirements are met so that the device can
fulfill its protective function.
•
The device must be affixed so that people or parts of the body are reliably
detected upon entry into the hazardous area.
•
The device must be affixed so that no mirrors or other highly specular objects
(e.g. due to gloss effects) are in the protective field, thereby limiting the detection
capability.
•
The device must be affixed so that people cannot enter unsecured areas.
8 PROJECT PLANNING
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O P E R A T I N G I N S T R U C T I O N S | TiM361S 8022483/1LM2/2024-03-27 | SICK
Subject to change without notice