Emerson Rosemount 2230 Reference Manual page 31

Reference Manual
00809-0100-2230
(3) A trunk is the longest cable path between two devices on the fieldbus network, and is the part of
the network which has terminations at both ends. In the Rosemount Tank Gauging system, a
trunk is typically located between the Rosemount 2410 Tank Hub and a segment coupler or the
last device in a daisy-chain configuration.
3.4.4 Hazardous areas
When the Rosemount 2230 is installed in a hazardous area, national and local regulations
and specifications in applicable certificates must be observed, see
3.4.5 Power requirements
The Rosemount 2230 is powered over the intrinsically safe Tankbus by the Rosemount
2410 Tank Hub. The 2410 feeds the intrinsically safe fieldbus segment by acting as a FISCO
power supply on the Tankbus (9 - 17.5 Vdc, polarity insensitive). The Rosemount 2230 has
a current consumption of 30 mA.
See the Rosemount 2410
information.
When installed in a F
FF segment with standard fieldbus power supplies.
3.4.6 Tankbus
The Rosemount Tank Gauging system is easy to install and wire. Devices can be "daisy-
chained" thus reducing the number of external junction boxes.
In a Rosemount Tank Gauging system devices communicate with a Rosemount 2410 Tank
Hub via the intrinsically safe Tankbus. The Tankbus complies with the FISCO
Fieldbus standard. The Rosemount 2410 acts as power supply to the field devices on the
Tankbus. A FISCO system enables more field devices to be connected to the segment
compared to conventional IS systems based on the entity concept.
Termination
A terminator is needed at each end of a F
terminator is placed in the fieldbus power supply, and the other one in the last device in
the fieldbus network.
Note
Ensure that there are two terminators on the fieldbus.
In a Rosemount Tank Gauging system the Rosemount 2410 Tank Hub acts as power
supply. Since the tank hub normally is the first device in the fieldbus segment, the built-in
termination is enabled at factory.
Other devices such as the standard version of the Rosemount 5900S Radar Level Gauge,
the Rosemount 2230 Graphical Field Display, and the Rosemount 2240S Multi-input
Temperature Transmitter also have built-in terminators which can easily be enabled by
inserting a jumper in the terminal block when necessary.
(7) FISCO=Fieldbus Intrinsically Safe Concept
Rosemount 2230 Graphical Field Display
Reference Manual (Document no. 00809-0100-2410) for more
™
Fieldbus system, the Rosemount 2230 is powered by the
OUNDATION
OUNDATION
Product certifications.
(7)
™
Fieldbus network. Generally, one
Installation
March 2021
F
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