Siemens SIMATIC RF610T ATEX - Page 23

Safety Information
2.3 Safety distance to transmitter antenna
SIMATIC RF600
System Manual, 06/2019, J31069-D0171-U001-A22-7618
23
The horizontal line at 41.25 V/m marks the "safety limit value".
D
Distance to transmitter antenna [m]
F
Feld strength [V/m]
%
% of limit value
1
10.9
26
5 2.2 5.3
If the transmit power is set lower than the highest permitted value (4 W EIRP), the "safety
distance" reduces correspondingly.
The values for this are as follows:
R
Radiated power EIRP [W]
S
Safety distance to transmitter antenna [m]
4.0
0.26
<2.5 >0.20
Generally a safety distance of at least 0.2 m should be maintained.
NNote
R
Reduced max
i
imum radiated power with RF600 readers
S
IMATIC RF610R and RF615R (FCC) readers have a maximum transmit power of 400 mW
.
T
he radiated power depends on the antenna cable and the antenna used, but must not
e
xceed 2 W ERP.
T
he SIMATIC RF650R (FCC) reader has a maximum transmit power of 1 W. The radiated
p
ower therefore depends on the antenna cable and the antenna used, but must not exceed
4
W EIRP.
T
he SIMATIC RF680R (FCC) reader has a maximum transmit power of 2 W. The radiated
p
ower therefore depends on the antenna cable and the antenna used, but must not exceed
4
W EIRP.
T
he SIMATIC RF685R (CC) reader has a maximum transmit power of 2 W. This means that
t
he safety distance is at least 0.12 m.
W
hen using Siemens products and with suitable configuration via the WBM, the high limits
c
annot be exceeded.