User Manual Part 1

RF300 system planning
4.4 Installation guidelines
SIMATIC RF300
System Manual, Release 04/2006, J31069 D0166-U001-A2-7618
4-33
4.4.4 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, it should be ensured that no metal rail (or
similar part) intersects the transmission field.
The metal rail would affect the field data.
The impact of metal on the field data (S
g
, S
a
, L, B) is shown in tabular format in this section.
The values in the table describe the reduction of the field data in % with reference to non-
metal (100 % means no impact).
Reduction of field data: Transponder and RF310R reader
Table 4-4 Reduction of field data by metal (in %): Transponder and RF310R
Reader RF310R
Transponder Without metal on metal flush-mounted
in metal
(20 mm surround)
RF320T
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
RF340T
Without metal 100 95 80
on metal 80 80 80
Flush-mounted in metal;
distance all-round 20 mm
70 70 70
RF350T
Without metal 100 95 85
on metal 70 65 65
Flush-mounted in metal;
distance all-round 20 mm
60 60 60
RF360T
Without metal 100 95 85
On metal; distance 20 mm 100 95 75
Flush-mounted in metal;
distance all-round 20 mm
60 60 60