See Cable selection for the Tankbus and Tankbus for more information about cable
selection and the Tankbus.
Non I.S. current loop alternative options:
1. Passive current loop. Input voltage range: 10.5 - 35 V
2. Active current loop. Output voltage range: 12.8 - 24 V @ 21.75 - 0 mA.
I.S. current loop alternative options:
1. Passive current loop. Input voltage range: 10.5 - 30 V
2. Active current loop. Output voltage range: 6.2 - 23 V @ 21.75 - 0 mA.
Note polarity for connection of polarity sensitive buses and I/O (for example RS485 and
analog I/O).
See Intrinsically safe terminal block for information on the Intrinsically Safe terminal block.
See Specifications and reference data for more information on electrical characteristics for
analog input and output.
2-in-1 version of the Rosemount 5900S in a SIL safety installation
Figure 3-8 illustrates an example with a 2-in-1 version of the Rosemount 5900S in a SIL
safety installation. A 4-wire cable is used to connect the Primary and Secondary Tankbuses
through the same cable entry. The SIL alarm wire is connected through a separate cable
entry. A junction box provides sufficient number of connections for the field devices to the
Primary and Secondary Tankbus.
Primary Tank Hub is connected to the electronic unit of the 5900S 2-in-1 level gauge for
SIL overfill alarm.
Secondary Tank Hub is connected to the 5900S electronic unit used for level
measurements.
Reference Manual Installation
00809-0100-2410 December 2019
Rosemount 2410 Tank Hub 43
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