Emerson FIELDVUEDVC2000 Manual de instrucciones descargar pdf (Pagina 43)

Instruction Manual

D103176X012

Detailed Setup and Calibration

April 2014

Figure 4‐1. Calibrated Travel to Analog Input Relationship

TRAVEL

RANGE

HIGH

TRAVEL

RANGE

LOW

THE SHAPE OF

THESE LINES DEPENDS ON

THE INPUT CHARACTERISTICS

LINEAR CHARACTERISTIC SHOWN

INPUT RANGE

LOW

INPUT RANGE

HIGH

ANALOG INPUT

MA OR % OF 4-20 MA

CALIBRATED TRAVEL, %

A6531-1

ZCS = CLOSED

ZCS = OPEN

NOTE:

ZCS = ZERO CONTROL SIGNAL

Actuator and Valve Information

Field Communicator Setup & Diag > Detailed Setup > Actuator & Valve (1-2-5)

Follow the prompts on the Field Communicator to edit or view information in the following fields:

D Max Supply Press—Enter the maximum supply pressure in psi, bar, or kPa, depending on what was selected for

pressure units.

Note

If the actual measured pressure exceeds this setting by 25%, the pressure measurement will not be displayed.

D Actuator Style—Enter the actuator style, spring and diaphragm, piston double-acting without spring, piston

single-acting with spring, or piston double-acting with spring.

D Valve Style—Enter the valve style, rotary or sliding-stem

D Zero Control Signal—Identifies whether the valve is fully open or fully closed when the input is 0%. If you are unsure

how to set this parameter, disconnect the current source to the instrument. The resulting valve travel is the Zero

Control Signal. (With direct acting digital valve controllers, disconnecting the current source is the same as setting

the output pressure to zero.)

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Emerson FIELDVUEDVC2000 Manual de instrucciones Pagina 43