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27
Reference Manual
00809-0100-4853, Rev AB
Installation
January 2017
Installation
Figure 3-10. Wiring Terminals without RTD
3.4.8
Power supply
The transmitter requires between 9 and 32 Vdc (9 and 30 Vdc for intrinsic safety, and 9 and 17.5 Vdc for
FISCO intrinsic safety) to operate and provide complete functionality.
3.4.9
Power conditioner
A fieldbus segment requires a power conditioner to isolate the power supply, filter, and decouple the
segment from other segments attached to the same power supply.
3.4.10
Grounding
Signal wiring of the fieldbus segment can not be grounded. Grounding one of the signal wires will shut
down the entire fieldbus segment.
Transmitter case grounding
Always ground the transmitter case in accordance with national and local electrical codes. The most
effective transmitter case grounding method is a direct connection to earth ground with minimal
impedance. Methods for grounding the transmitter case are listed below.
Internal ground connection
The internal ground connection screw is inside the FIELD TERMINALS side of the electronics housing. This
screw is identified by a ground symbol (
). The ground connection screw is standard on all Rosemount
3051SMV Transmitters (see
A. Protective grounding terminal
(do not ground cable shield at the transmitter)
B. Trim shield and insulate
C. Minimize distance
D. Insulate shield
E. Connect shield back to the power supply ground
DP
B
A
D
C
C
E
Содержание Rosemount MultiVariable 3051SMV
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