Emerson Rosemount 5900C, Reference Manual

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Table 3-13: Terminal Block Connections for the Rosemount 5900C
Connection Description
X1: Tankbus in Intrinsically safe Tankbus input, power and communication (spur in
F
OUNDATION
Fieldbus system)
X2: Terminate on The integrated line terminator is connected over the Tankbus when a
jumper is placed in the terminal block
X3: Shield loop
through Cable shield daisy-chain connector (not grounded)
X4: Tankbus out Tankbus output connected to X1 for optional daisy-chain connection to
other devices
Test terminals Test terminals for temporary connection of a Field Communicator
The X1 terminal is connected to the intrinsically safe Tankbus.
A jumper on the X2 terminal enables the built-in termination. The termination should be
used if the Rosemount 5900C gauge is installed at the end of a Tankbus network. See
Tankbus for more information on how to terminate the Tankbus.
The X3 terminal is used for connecting the cable shield in order to enable a continuous
shield throughout the Tankbus network.
The X4 terminal can be used for “daisy-chain” connection to other devices such as the
Rosemount 2240S Multi-input Temperature Transmitter, or the Rosemount 2230
Graphical Field Display. See also
Figure 3-35 .
3.4.12 Wiring diagrams
The standard version of the Rosemount 5900C has a single intrinsically safe fieldbus input.
You may activate a built-in fieldbus termination by short-circuiting the X2 connector.
An intrinsically safe output on connector X4 can be used for “daisy-chain” connection to
other devices in a Rosemount Tank Gauging system.
Connector X3 is used for a fieldbus input/output cable shield connection (separated from
chassis ground).
Figure 3-35 illustrates a typical wiring diagram with a Rosemount 5900C level gauge
connected to a Rosemount 2240S temperature transmitter. In this example the
termination is enabled in the temperature transmitter which is the last device on the
Tankbus (see
Tankbus ).
In case you prefer to connect the temperature transmitter to the tank hub, you may
“daisy-chain” the Rosemount 5900C to the temperature transmitter, and terminate the
Tankbus by a jumper in terminal X2 on the Rosemount 5900C terminal block.
Installation Reference Manual
September 2019 00809-0100-5901
114 Reference Manual