Device Supply; Fieldbus Connection - WAGO 750-341 Manual

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
Fig. 3.1-2: Device supply
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.
Fig. 3.1-1: RJ45-Connector and RJ45 Connector Configuration
WAGO-I/O-SYSTEM 750
ETHERNET TCP/IP
1 5
24 V /0 V
2 6
24 V
3 7
0 V
4 8
750-341
Fieldbus Coupler 750-341
24 V
10 nF
0 V
24 V
0 V
10 nF
Contact Signal
1 TD +
2 TD -
3 RD +
4
5
6 RD -
7
8
• 39
Hardware
DC
I/O
MODULES
DC
ELECTRONIC
G034101e
Transmit +
Transmit -
Receive +
free
free
Receive -
free
free