User's Manual

Planning the RF300 system
4.3 Installation guidelines
SIMATIC RF300
System Manual, 07/2016, C79000-G8976-C345-0x
65
4.3.4
Impact on the transmission window by metal
In general, the following points should be considered when mounting RFID components:
● Direct mounting on metal is allowed only in the case of specially approved transponders.
● Flush-mounting of the components in metal reduces the field data; a test is recommended
in critical applications.
● When working inside the transmission window, make sure that no metal rail (or similar
part) intersects the transmission field.
The metal rail would affect the field data.
● With readers with a large antenna surface (e.g. RF260R) for reasons of communication
reliability, when the transponders are flush mounted in metal, a metal-free space around
the transponders is recommended. This metal-free space should match the size of the
antenna surface.
The impact of metal on the field data (S
g
, S
a
, L) is shown in a table in this section. The
values in the tables describe field data reduction and show the reduced range as a
percentage. The range relates to use in a non-metallic environment. A value of 100% means
no influence on the range.
Note
Possible reader-transponder combinations
The tables of the following section show the possible reader
-transponder combinations.
4.3.4.1
Impact on the transmission window by metal
With RF300 transponders
Table 4- 32 Reduction of field data due to metal, range as %: Transponder and RF310R
Transponder
RF310R reader
Without metal
On metal
Flush-mounted
in metal
(20 mm all-
round)
RF320T
1)
Without metal
100
95
80
On metal; distance 20 mm
100
80
70
Flush-mounted in metal;
distance all round 20 mm
80 70 60
RF330T
Without metal
100
95
80
On metal; distance 0 mm
100
85
75
Flush-mounted in metal;
distance all round 10 mm
85 80 70
Flush-mounted in metal;
without surrounding clearance
30 30 25