Fieldbus Coupler 750-341
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43
Hardware
WAGO-I/O-SYSTEM 750
ETHERNET TCP/IP
3.1.2.2 Device supply
The supply is made via terminal bocks with CAGE CLAMP® connection. The
device supply is intended both for the system and the field units
1
2
3
4
5
6
7
8
DC
DC
24 V
10 nF
24 V
10 nF
0 V
24 V /0 V
24 V
0 V
0 V
750-341
FiELDBUS
INTERF
ACE
ELECTRONIC
ELECTRONIC
FiELDBUS
INTERF
ACE
I/O
MODULES
Fig. 3.1-2: Device supply
G
034101e
The integrated internal system supply module generates the necessary voltage
to supply the electronics and the connected I/O modules.
The fieldbus interface is supplied with electrically isolated voltage from the
internal system supply module.
3.1.2.3 Fieldbus connection
Connection to the fieldbus is by a RJ45 connector. The RJ45 socket on the
fieldbus coupler is wired per the 100BaseTX standard. The specification for
the connecting cable is a twisted pair cable of Category 5. Cables of type S-
UTP (Screened-Unshielded Twisted Pair) and STP (Shielded Twisted Pair)
with a maximum segment length of 100 meters may be used.
The RJ45 socket is physically lowered for the coupler to fit in an 80 mm high
switch box once connected.
The electrical isolation between the fieldbus system and the electronics is
achieved by DC/DC converters and optocouplers in the fieldbus interface.
Contact
Signal
1
TD +
Tr
2
TD -
Transmit -
3
RD +
R
4 free
5 free
6
RD -
Receive -
7 free
8 free
Fig. 3.1-1: RJ45-Connector and RJ45 Connector Configuration
Содержание 750-341
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