Emerson 3051S Manual de usuario descargar pdf (Pagina 50)

Rosemount 3051

September 2014

www.rosemount.com

Service

Liquid, gas, and vapor applications

4-20 mA HART (output code A)

Power supply

External power supply required. Standard transmitter (4-20mA)

operates on 10.5-42.4 Vdc with no load

Load limitations

Maximum loop resistance is determined by the voltage level of

the external power supply described by:

Indication

Optional two line LCD/LOI Display

Optional configuration buttons

Configuration buttons need to be specified:

Digital Zero trim (option code DZ) changes digital value of the

transmitter and is used for performing a sensor zero trim.

Analog Zero Span (option code D4) changes analog value and

can be used to rerange the transmitter with an applied pressure.

Output

Two-wire 4-20mA, user selectable for linear or square root

output. Digital process variable superimposed on 4-20 mA

signal, available to any host that conforms to HART protocol.

The 3051 comes with Selectable HART Revisions. Digital

communications based on HART Revision 5 (default) or Revision

7 (option code HR7) protocol can be selected. The HART revision

can be switched in the field using any HART based configuration

tool or the optional local operator interface (M4).

Power advisory diagnostics

Power Advisory Diagnostics pro-actively detect and notify

you of degraded electrical loop integrity before it can affect

your process operation. Example loop problems that can be

detected include water in the terminal compartment,

corrosion of terminals, improper grounding, and unstable

power supplies.

The Device Dashboard presents the diagnostics in a

graphical, task-based interface that provides single-click

access to critical process/device information and descriptive

graphical troubleshooting.

Local operator interface

The LOI utilizes a 2 button menu with internal and external

configuration buttons. Internal buttons are always

configured for Local Operator Interface. External Buttons can

be configured for either LOI (option code M4), Analog Zero

and Span (option code D4) or Digital Zero Trim (option code

DZ). See Rosemount 3051 product manual

(00809-0100-4007) for LOI configuration menu.

FOUNDATION fieldbus (output code F)

Power supply

External power supply required; transmitters operate on 9.0 to

32.0 V dc transmitter terminal voltage. FISCO transmitters

operate on 9.0 to 17.5 V dc.

Current draw

17.5 mA for all configurations (including LCD display option)

Indication

Optional two line LCD display

FOUNDATION fieldbus block execution times

OUNDATION fieldbus parameters

OUNDATION fieldbus function blocks (option A01)

Resource block

The resource block contains diagnostic, hardware, and

electronics information. There are no linkable inputs or

outputs to the Resource Block.

Sensor transducer block

The sensor transducer block contains sensor information

and the ability to calibrate the pressure sensor or recall

factory calibration.

Communication requires a minimum

loop resistance of 250 ohms.

(1) For CSA approval, power supply must not exceed 42.4 V.

Max. Loop Resistance = 43.5 (Power Supply Voltage – 10.5)

Voltage (Vdc)

Load (s)

Operating

Region

1387

1000

500

10.5 20 30

42.4

(1)

Block Execution time

Resource N/A

Sensor and SPM Transducer N/A

LCD Display N/A

Analog Input 1, 2 20 milliseconds

PID 25 milliseconds

Input Selector 20 milliseconds

Arithmetic 20 milliseconds

Signal Characterizer 20 milliseconds

Integrator 20 milliseconds

Output Splitter 20 milliseconds

Control Selector 20 milliseconds

Links 25 (max.)

Virtual Communications Relationships (VCR) 20 (max.)

1 2 ... 45 46 47 48 49 50 51 52 53 54 55 ... 83 84

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Emerson 3051S Manual de usuario Pagina 50

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