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Operating instructions
Chapter
4
RFID Access Management
8018582/2015-11-03
Operating instructions| SICK
29
Subject to change without notice
Setup and mounting
Scanning range of the reading field
Ensure that the distance from the RFID interrogator to the tag is as short as possible
.
Please note that the RFID interrogator has a lobar send and receive characteristic.
This means that there are a number of small zones where the send and receive signals
are weaker because of the physical principles involved.
Fig. 16: Lobar send and receive characteristic of the internal antenna
•
For optimum reading accuracy and, in turn, reliability, the tag should be located in the
axis of the RFID interrogator in front of the read area, and the tag should be parallel to
the RFID interrogator (i.e., the angle should be as small as possible).
Fig. 17: Ideal positions for tag/RFID interrogator
Approach angle in the case of a large metal surface on the front
If an RFU63x is mounted in front of any metal surfaces at the front, then an approach
angle of approx. 5° must be observed. With a RFU62x, the recommended approach angle
is 10°.
Fig. 18: Selecting the approach angle of the RFID interrogators in the case of a large metal surface
on the front