Emerson ROSEMOUNT 5300 Manual de usuario Pagina 20

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Product Data Sheet
00813-0100-4530, Rev AA
Catalog 2008 - 2009
Rosemount 5300 Series
Level-20
POWER SUPPLY
4-20 mA with HART
®
The input voltage (U
I
)for HART
®
is 16-42.4 V dc
(16-30 V dc in IS applications, and 20-42.4 V dc in
Explosionproof / Flameproof applications).
The maximum load resistance and power supply
limitations for typical operating conditions can be
obtained from the following diagrams and table.
F
OUNDATION™ fieldbus
The input voltage for F
OUNDATION™ fieldbus is
9-32 V dc (9-30 V dc in IS applications, and
16-32 V dc in Explosionproof / Flameproof
applications).
R: Load Resistance (Ω)
U
E
: External Power
Supply Voltage (V dc)
U
I
: Input Voltage(V dc)
Non-Hazardous Installations
Intrinsically Safe Installations
Maximum Load Resistance
Operating
Region
External Power
Supply Voltage
Operating
Region
Maximum Load Resistance
External Power
Supply Voltage
Minimum input voltage (U
I
) at different currents
Current
3.75 mA 21.75 mA
Hazardous
approval
Minimum input voltage (U
I
)
Non-Hazardous
Installations and
Intrinsically Safe
Installations
16 V dc 11 V dc
Explosionproof /
Flameproof
Installations
20 V dc 15.5 V dc
Explosionproof / Flameproof (EEx d) Installations
NOTE
For the EEx d case the diagram is only valid if the
HART
®
load resistance is at the + side and if the -
side is grounded, otherwise the load resistance
value is limited to 435 Ohm.
Maximum Load Resistance
External Power
Supply Voltage
Operating
Region
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