Product description
38 © SICK AG · Germany · All rights reserved · Subject to change without notice
8013889/ZML0/2017-06-
09
Operating Instructions
NAV350 Laser positioning sensor
Chapter 3
3.10.4 Absolute coordinate system
During the planning of the reflector positions, a common coordinate system is defined on a
floor plan. This absolute coordinate system corresponds to the coordinate system of the in-
dustrial machine/system. In this way the origin and axes for the absolute coordinate sys-
tems are defined.
In this coordinate system the NAV350 determines its absolute position in the X and Y direc-
tion including the angular position α of its local coordinate system in relation to the abso-
lute coordinate system. The angular position here is the angle between the X axis of the
sensor and the X axis of the absolute coordinate system. The angles are mathematically
positive in the counterclockwise direction.
Fig. 22: Absolute and local coordinate system with angular position of the NAV350
X, Y = Absolute coordinate system of the machine/system
x, y = Local coordinate system of the NAV350
α
=
Direction of the NAV350 in the absolute coordinate system
The coordinate origin for the NAV350 is on the axis of the scanner head.
3.10.5 Reflectors
The NAV350 allocates the measured data determined from its surroundings to the reflector
positions saved. For this purpose it must differentiate the reflectors from other reflecting ob-
jects. The NAV350 checks the measured data using characteristic data that are saved in its
memory. These characteristic data apply to the reflective tape 983-10 (part no. 5320565)
that is available as an accessory from SICK AG under the designation REF-DG.
Important Reflective tapes of other makes may not be correctly detected by the NAV350.
The reflector markers are designed as cylindrical reflectors. Cylindrical reflector markers
can be detected from any angle.
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