3.4.6 Power budget
The Rosemount 2410 Tank Hub delivers 250 mA to the Tankbus. In Smart Wireless
systems a Rosemount 2410 Tank Hub equipped with active analog inputs/outputs may
deliver 200 mA. The number of tanks served by the tank hub depends on the type of
connected field devices and their power consumption
(6)
. Power consumption per field
device is listed in Table 3-2.
Table 3-2: Power Consumption for Various Rosemount Tank Gauging Devices
Field device Power consumption
Rosemount 5900S Radar Level Gauge 50 mA
Rosemount 5900C Radar Level Gauge 50 mA
Rosemount 5900S Radar Level Gauge, 2-in-1
solution
100 mA
Rosemount 5300 Level Transmitter 21 mA
Rosemount 5408 Level Transmitter 21 mA
Rosemount 2230 Graphical Field Display 30 mA
Rosemount 2240S Multi-input Temperature
Transmitter
30 mA including 565, 566 and 765 temperature
sensors
Rosemount 644 Temperature Transmitter 12 mA
Rosemount 3051S, and Rosemount 2051
Pressure Transmitters
18 mA
The Rosemount 2410 Tank Hub is available in a single tank version as well as a multiple
tank version which supports up to 10 tanks
(7)
.
3.4.7
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
(8)
FOUNDATION
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.
The tank hub is designed for use in hazardous area Zone 1 (Class 1, Division 1) and
communicates with field devices via the intrinsically safe Tankbus.
Termination
A terminator is needed at each end of a FOUNDATION
™
Fieldbus network. A trunk is defined
as the longest cable path between two devices on the fieldbus network. In the Rosemount
(6)
May be fewer than the 16 devices per segment, stated in the FOUNDATION
™
Fieldbus standard.
(7) Maximum five Rosemount 5300 level transmitters.
(8) FISCO=Fieldbus Intrinsically Safe Concept
Installation Reference Manual
December 2019 00809-0100-2410
34 Reference Manual
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