INOR IPAQ R520X - Manual (Page 23)

4 ELECTRICAL CONNECTIONS C520/C520X / R520/R520X
09/2010 • 86B5200001 www.inor.com 23
4.7 Connection diagram, R520X
Figure 14: R520X connection diagram
1 Voltage supply 10…30 VDC (intrinsically safe - terminals 21, 22)
2 Input (intrinsically safe)
3 R
Load
(intrinsically safe)
4 Modem / Ex (intrinsically safe)
5 Classified hazardous area (potentially explosive area e.g. Zone 0, 1 or 2)
6 Classified hazardous area (potentially explosive area e.g. Zone 1 or 2)
7 Safe area
4.8 Cable length
In order to ensure reliable HART communication with C520/R520, the maximum cable length of
the output circuit must be observed.
ATTENTION!
In the Ex version, please note that the maximum cable length is determined by a resistance, an
inductance and a capacitance of the cable. The total capacitance and inductance of the cable
must be within the limits for the transmitter described in the Ex certificate.
2
1
3
6
5
4
4 7