Wiring - Emerson Rosemount 3051CF Series Reference Manual

Reference Manual
00809-0100-4774
Figure 4-2: Conduit Installation Diagrams
A. Possible conduit line positions
B. Sealing compound
4.5.2 Power supply for F
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.
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.
4.6

Wiring

4.6.1 Transmitter wiring
Wiring and power supply requirements can be dependent upon the approval certification.
As with all F
terminating resistors are required for proper operation.
Rosemount 3051 terminal block. The terminals are not polarity sensitive. The transmitter
requires 9–32 Vdc to operate. Emerson recommends Type A FOUNDATION Fieldbus
wiring 18 awg twisted shielded pair. Do not exceed 5000 ft. (1500 m) total segment
length.
Note
Avoid running instrument cable next to power cables in cable trays or near heavy electrical
equipment.
Note
It is important that the instrument cable shield be:
• Trimmed close and insulated from touching the transmitter housing
Reference Manual
A
B
OUNDATION
™
Fieldbus requirements, a conditioned power supply and
OUNDATION
Electrical installation
B
A
™
Fieldbus
Figure 4-4 displays the standard
July 2020
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