Rockwell Automation 442L-SFZNMN SafeZone Mini Safety Laser Scanner User Manual - Manual (Page 29)

Rockwell Automation Publication 10000337275 Ver 01—October 2014 27
Chapter 5 Mounting
How to calculate the supplement C:
 If there is enough empty space in front of your machine or system, use 1200 mm (47.2 in.) for the supplement C.
 If the minimum distance is to be kept as small as possible, calculate C using the following formula:
C = 1200 mm – (0.4 × H
D
)
Here H
D
is the height at which the protective field is mounted.
Note The minimum supplement C to prevent reaching over is 850 mm (33.5 in.)(arm length).
Height of the scan plane at 70 mm (2.8 in.) resolution
Due to the radial sampling of the protective field, the optical resolution will be lower the further away you get from the
safety laser scanner.
Fig. 17: Relationship between
resolution and protective
field mounting height
If you choose a resolution of 70 mm (2.8 in.) in the SCD software for hazardous area protection, a human leg may, in
certain circumstances, not be detected (e.g. scan to left and right of the bone
).
If you mount the SafeZone Mini higher, the scan plane is at fibula height and the leg is also detected with an object
resolution of 70 mm (2.8 in.)
.
Stationary vertical operation
for access protection Access protection can be used when the access to the machine can be defined by physical means. For access protection the
SafeZone Mini detects the entry of an entire body.
Notes • To ensure adequate access protection, a response time of
 90 ms and a resolution of 150 mm (5.91 in.) or finer are
required.
• To protect the protective device against inadvertent adjustment or manipulation, you must use the contour of the
surroundings as a reference for the SafeZone Mini (see Chapter 4, “Using the contour as a reference” on page 21).
Minimum distance
For access protection, a minimum distance (S) must be maintained between protective field and hazardous area. This
safety distance ensures that the hazardous point can only be reached after the dangerous state of the machine has been
completely stopped.

