68 CoriolisMaster FCB400, FCH400 CORIOLIS MASS FLOWMETER | CI/FCB400/FCH400-EN REV. H
… 6 Electrical connections
… Digital communication
Use in hazardous areas
WARNING
There are limitations of the M12 plug in combination with a
ATEX / IECEx approved flowmeter.
No Ex Area ATEX/IEX
Zone 2
Div 2
Ethernet cable directly connected to
Ethernet card terminals
Y Y Y
Ethernet cable connected to M12
plug at transmitter housing
Y Y N
Retaining clip
WARNING
When using the M12 Plug in combination with a ATEX / IECEx
approved flowmeter, a retainer clip must be put in place.
• Use or operating the device without a M12-locking clip is
not permitted.
A Retaining clip
Figure 61: Mounting of retaining clip
DANGER
Explosion hazard
Danger of explosion by connecting or disconnecting the M12
connector when the device is energized.
• Only connect or disconnect the M12 connector when the
device is de-energized.
1. Remove the metal M12 connector closing cap at transmitter
enclosure from delivery state.
2. Connect the customer M12 connector cable.
3. Put the enclosed retaining clip around the M12 connector and
close them until the clip clicks into space and secure the clip
by closing arrow and needle eye.
RJ45 connector (option)
Various Options for RJ45 connection are available from the
Modelcode. The RJ45 connector is equipped with a certain
length of Ethernet cable – as per model code.
The flowmeter is shipped with the Ethernet cable fitted to the
terminals inside the transmitter:
• Flowmeter equipped with 1 × RJ45
(with 4 wires, connecting to Port 1)
• Flowmeter equipped with 2 × RJ45
(with 4 wires each, connecting to Port 1 and 2)
• Flowmeter equipped with 1 ×RJ45
(with 8 wires, connecting to Port 1 and 2)
These options allow for connection to different network
topologies:
Topology 4 wires
4 wires
4 wires
8 wires
1 x RJ45
(4 wires)
2 x RJ45 (4 wires) 1 x RJ45
(8 wires)
Star Y Y Y
Ring or daisy-
chain
N Y N
PoE N N Y
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