For US Applications
For European Applications
Dpf Considerations
Horizontal Safety Zone Applications (parallel approach)
Dpf = 1200 mm (48 in)
Scanner-Specific Additional Distance Factors — Two Scanner-specific
factors must be considered when calculating the Minimum Safety distance:
ZSM and Zamb
ZSM Measurement Tolerance Factor — ZSM is the additional distance
needed to account for distance measurement error. The value for ZSM is
100 mm (3.94 in). For Vertical Safety Zones (normal approach), Zsm = 0
Distance Adjustment C, Based on the Possible Field Intrusion
Horizontal Safety Zone Applications (Parallel Approach)
C = 1200 mm – (0.4 × H) or C = 48 in – (0.4 × H)
where H is the distance of the Safety Zone above the floor or walking
surface (1000 mm maximum). C can never be less that 850 mm (34 in).
Additional Scanner-Specific Distance Factors
Two Scanner-specific factors must be considered when calculating the
Minimum Safety distance: ZSM and Zamb
ZSM Measurement Tolerance Factor—ZSM is the additional distance
needed to account for distance measurement error. The value for ZSM is
100 mm (3.94 in). For Vertical Safety Zones (normal approach), Zsm = 0
Z
amb
(Ambient Interference Factor)
is the additional distance needed to account for measurement errors due to light
interference and/or reflections from highly reflective or shiny surfaces that are present in the scanning plan.
No ambient interference Z
amb
= 0
Ambient Interferences present Z
amb
= Value interpreted from the graph based on dust filter level
Figure 28. Calculating the safety distance for each resolution
H
C
H
C
US Information Dpf Considerations for Vertical Safety Zone Applications (Normal Approach)
For Detection Capability (Resolution), where d ≤ 64 mm (2.5 in), i.e. 40 mm, the formula for Dpf is: Dpf = 3.4 x (d - 7 mm) or
Dpf = 3.4 x (d - 0.275 in)
Where d = the scanner's detection capability (resolution)
For Detection Capabilities (Resolution) of d > 64 mm (2.5 in), i.e. 70 mm, Dpf is 900 mm (36 in)
For a Detection Capability (Resolution) of 40 mm the Dpf is 112 mm (4.5 in)
Resolution
Dpf
30 mm (1.2 in)
78 mm (3.1 in)
40 mm (1.6 in)
112 mm (4.5 in)
50 mm (2 in)
146 mm (5.9 in)
70 mm (2.75 in)
900 mm (36 in)
150 mm (5.9 in)
900 mm (36 in)
European Information Distance Adjustment C, Based on the Possible Field Intrusion for Vertical
Safety Zone Applications (Normal Approach)
For a Resolution of 40 mm (1.6 in), the formula for C is: C = 8 x (d - 14 mm) or C = 8 x (d - 0.55 in)
Where d = the scanner's detection capability (resolution)
For a resolution of 70 mm (2.8 in): C = 850 mm (34 in)
For a Detection Capability (Resolution) of 40 mm, C is 208 mm (8.2 in)
SX Safety Laser Scanner
36
www.bannerengineering.com - Tel: + 1 888 373 6767
