Siemens SIMATIC Ident RF340R02 System Manual page 69

Note that antenna cables should not be coiled (cable coil = antenna) and should not be
mounted directly on metal when coiled to avoid coupling. Antenna cables should be laid
separately in a cable channel and not together with the signal/power supply cable of devices
(including those of the reader) or other power cables.
NOTICE
Installation of the readers on a metal construction and mixed mode
Note that if the readers are installed on a metal construction and in mixed mode
minimum spacing needs to be doubled. This also applies if you are working with external
antennas. Moreover the non-metal base on which the reader is mounted should be at least
40 mm thick.
RF300 operation along with ISO 15693 operation or ISO 15693 operation with MOBY E
1)
operation etc.
Table 4- 33 Mounting of several readers on metal frames or racks
Representation
SIMATIC RF300
System Manual, 07/2017, C79000-G8976-C345-07
Planning the RF300 system
Description
Problem:
Interaction between readers
Remedy:
Increase the distance D between the two readers.
Remedy:
Introduce one or more iron struts in order to short-
circuit the stray fields.
Remedy:
Insert a non-metallic spacer of 20 to 40 millimeter
thickness between the reader and the iron frame. This
will significantly reduce the induction of stray fields on
the rack:
4.3 Installation guidelines
the
1)
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