Device Drawings and Connections
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netTAP NT 50 | Gateway Devices
DOC091202UM09EN | Revision 9 | English | 2013-02 | Released | Public
© Hilscher, 2010-2013
4.4.3
Galvanic Isolation of NT 50-RS-EN
The device type NT 50-RS-EN has three galvanically isolated areas. The
coupling to PE is shown in the following figure and in the following table.
Figure 7: Galvanic Isolation of NT 50 -RS-EN Devices
Area
Connec-
tion
Protocol
galv. Isola-
tion
Coupling
Coupling against PE
potential
Functional earthing to
PE
HF
Cf = 10 nF / 500 V,
Lf = 47
μ
H
X1
-
no
Cx1
4 * 10 nF / 500 V
no
HF
Cf = 10 nF,
Lf = 47
μ
H
X2
RS232
RS422
RS485
no
Cx1
4 * 10 nF / 500 V
directly via the metal
connection of the D-Sub
female connector
X3
Ethernet
inductive
Cx3
6 * 75
Ω
+ 10 nF / 2000 V
Directly via the metal
connection of RJ 45
sockets
Table 32: Coupling NT 50-RS-EN Devices
