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Reference Manual
00809-0100-4530, Rev BA
July 2009
Rosemount 5300 Series
4-4
HART
Power Requirements Terminals in the transmitter housing provide connections for signal cables.
The Rosemount 5300 transmitter is loop-powered and operates with the
following power supplies:
The input voltage for HART is 16-42.4 Vdc (16-30 Vdc in IS applications, and
20-42.4 Vdc in Explosion-proof / Flameproof applications).
Maximum Loop
Resistance
The maximum current loop resistance (see Figure 4-5 and Figure 4-6) is
given by the following diagrams:
Figure 4-1. Explosion-proof
/Flameproof installations.
Figure 4-2. Non-hazardous
installations.
Figure 4-3. Intrinsically Safe
installations.
Current
3.75 mA 21.75 mA
Hazardous approval Minimum input voltage (U
I
)
Non-Hazardous Installations and
Intrinsically Safe Installations
16 Vdc 11 Vdc
Explosion-proof / Flameproof
Installations
20 Vdc 15.5 Vdc
External Power
Supply Voltage
NOTE
This diagram is only valid if the load resistance is at
the + side and if the - side is grounded, otherwise the
maximum load resistance is limited to 435 .
Operating
Region
External Power
Supply Voltage
Operating
Region
External Power
Supply Voltage
Operating
Region