Siemens SIMATIC Ident - Antenna Installation

RF200 system planning
4.3 Installation guidelines
SIMATIC RF200
System Manual, 07/2015, J31069-D0227-U001-A9-7618
75
4.3.5.2
Antenna installation
Configuring instructions
The antenna installation described below enables detection of transponders moving
horizontally through the installation. Depending on the installation (antennas exactly opposite
each other or offset in parallel), the label is aligned in parallel with the antennas or arbitrarily.
The size of the sensing range depends on the label alignment:
Note
Remember that the entire acquisition range of the antenna is larger than the transmission
window in which the transponder is normally configured. This means there can be label
alignments where even labels outside the transmission window will be
identified. Labels
aligned in parallel with the antennas, for example, can also be detected at larger distances
beside or outside the antenna range.
For this reason, goods with labels must not be stored within a distance of up to 0.5 m from
the installati
on. If this cannot be complied with, the antennas must be shielded.
To achieve three
-dimensional detection of the labels in the sensing range, the following
requirements must be met:
•
The gate width must be less than or equal to 800 mm.
•
The antenna size of the labels should be at least the size of an ISO card (85 mm x 54
mm).
•
The distance from label to label must be greater than 100 mm. The distance from label to
label can be reduced if the gate width is correspondingly reduced. This applies especially
for distances under 50 mm.
•
There should be no more than 16 labels within the sensing range of the antennas at the
same time.
The number of labels can be increased if the gate width is correspondingly reduced and
the maximum speed suitably adapted.
•
The maximum speed of the labels must not exceed 1 m/s. (This depends on the number
and alignment of the labels, the number of data blocks to be processed, the data protocol
required and the label type).
•
To the front and sides of the antenna, there must be a distance of more than 150 mm to
metal parts.
•
There must be no interference to the write/read device from other electrical equipment in
the surrounding area.
Note
The RF290R reader is not capable of multitag operation in the CM mode.