Device drawings and connectors
37/75
5.9.1
netHOST for Fieldbus systems
Galvanic isolation of the netHOST devices
NHST-T100-DP/DPM
,
NHST-
T100-CO/COM
and
NHST-T100-DN/DNM
.
Figure 4: Galvanic isolation of netHOST for Fieldbus systems
The device has three galvanically isolated areas. The isolation to the
network connections is indicated by the red arrow
(A)
.
(1)
System area, galvanically coupled with the power supply connection at X1.
(2)
LAN connecting area, 2 * RJ45.
(The figure above shows only one RJ45 socket. The second RJ45 socket is built up
identically and connected to the logic at netX X2.)
(3)
Fieldbus connecting area with DSub male / female or Combicon-connector.
The following table shows the characteristics of the galvanic isolation of the
different areas and coupling against potential equalization:
Area
Connection
Interface
galv.
Isolation
Coupling
Coupling against PE
potential
Functional earthing to PE
(1)
X1
-
no
Cx1
(1)
4 * 10 nF 500V
HF
(1)
Cf = 10 nF, Lf = 47 μH
(2)
X2
Ethernet
inductive
Cx2
(2)
4 * 75 Ω, 1 nF 2000 V
Directly via the metal
connection of RJ 45 sockets
(3)
X3
CANopen
(NHST-T100-CO)
optically
Cx3
(3)
1 MΩ // 15 nF 1000V
directly
PROFIBUS
(NHST-T100-DP)
inductive
Cx3
(3)
1 MΩ // 2.2 nF 1000 V
directly
DeviceNet
(NHST-T100-DN)
optically
Cx3
(3)
1 MΩ // 15 nF 1000V
1 MΩ // 15 nF 1000V
Table 29: Coupling of netHOST for Fieldbus systems
netHOST NHST-T100 | LAN controlled master devices
DOC130401UM05EN | Revision 5 | English | 2018-05 | Released | Public
© Hilscher 2013 – 2018
