Emerson 3051S Dokumentacja Pobierz pdf (Strona 27)

Reference Manual

00809-0200-4801, Rev CA

July 2010

2-13

Rosemount 3051S Series

NOTE

It is important to know that Simulate is enabled only when the hardware

senses the switch changing from DISABLE to ENABLE. If the power is

removed with the switch in ENABLE, Simulate is not enabled. You must move

the switch from ENABLE to DISABLE and then back to ENABLE to be able to

use the Simulate software.

WIRING

Transmitter Wiring Wiring and power supply requirements can be dependent upon the approval

certification. As with all F

OUNDATION fieldbus requirements, a conditioned

power supply and terminating resistors are required for proper operation. The

standard 3051S pressure transmitter terminal block is pictured below. The

terminals are not polarity sensitive. The transmitter requires 9-32 Vdc to

operate. Type A F

OUNDATION fieldbus wiring 18 awg twisted shielded pair is

recommended.

NOTE

Avoid running instrument cable next to power cables in cable trays or near

heavy electrical equipment.

It is important that the instrument cable shield be:

- trimmed close and insulated from touching the transmitter housing

- continuously connected throughout the segment

- connected to a good earth ground at the power supply end

Figure 2-5.

FIELDBUS WIRING

Trim shield and

insulate

Insulate

Shield

Connect Shield Back

to the Power Supply

Ground

Ground for

Transient

Protection

Minimize Distance

1 2 ... 22 23 24 25 26 27 28 29 30 31 32 ... 239 240

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Emerson 3051S Dokumentacja Strona 27