Device Description HG G-19603ZA | English, Revision 03 | Date: 31.03.2021
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Chapter 3 – Mounting
3.1.2 Magnetic Tape Installation
The installation of both the magnetic tape and the embedded magnetic bar is spec
-
ified in a separately available document that you can download at the following ad
-
dress:
http://goetting-agv.com/components/19600
3.2 Magnet Sensor
3.2.1 Requirements
External magnetic fields with a field strength below the Earth‘s magnetic field do not
influence the magnet sensor. For stronger fields the strength and position of the field
determine whether the magnet sensor is affected or can even be configured to com
-
pensate the influence. Fields that asymmetrically influence from a certain direction
(left or right) or only occur at certain points of the course are harder to compensate.
Generally interferences should be minimized so that the magnet sensor can detect
the track reliably. Therefore:
Figure 6
Areas around sensor and tape that need to be free of ferromagnetic materials
An area of 100 mm around the sensor should be free of ferromagnetic materi
-
als. Those divert the magnetic field and distort the readings. Similarly an area
with a diameter of approximately the nominal reading height around the mag
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netic tape should be free of ferromagnetic materials.
DANGER
False output due to interfering signals
Additional magnetic fields close to the magnet sensor can affect the system
characteristics. This may lead to the vehicle leaving the track.
The vehicle manufacturer has to include functionality to detect this and stop
the vehicle if needed
As an aid the status of the track detection in the CAN/CANopen® telegrams can
be used, see chapter 7 on page 32 / 8 on page 34.
Also a failure of the CAN/CANopen® communication must be detected as
leaving the track.
100
100
100
356
100
100
Front view
Vehicle body
Roadway
Magnet
tape
Magnet
sensor
Side view
‚metal-free‘
areas around
sensor and magnet
tape without
ferromagnetic
materials
Roadway
Magnet
sensor
Nominal
reading dist.
Nominal
reading distance
optional
distance
Vehicle
body
piece
(example)
