Flowserve 1000 Series Digitial Positioner Manuel d'utilisateur télécharger pdf

Logix Series 1000 Digital Positioner

Installation, Operation and Maintenance Instructions

Flowserve Corporation 1350 N. Mountain Springs Parkway 1978 Foreman Dr.

Flow Control Division Springville, Utah 84663-3004 Cookville, TN 38501

www.flowserve.com Phone: 801 489 2233 Phone: 931 432 4021

Automax Logix Series 1000 Digital Positioner

GENERAL INFORMATION

The following instructions are designed to assist in

unpacking, installing and performing maintenance as

required on Logix™ Series 1000 Digital Positioners.

Series 1000 is the term used for all the positioners

contained herein; however, specific numbers indicate

features specific to a model (i.e., Logix 1200 indicates

that the positioner uses HART

protocol). Product users

and maintenance personnel should thoroughly review

this bulletin prior to installing, operating, or performing

any maintenance on the positioner. For quick calibration

instructions, see page 11.

To avoid possible injury to personnel or damage to

valve parts, users must strictly adhere to WARNING

and CAUTION notes. Modifying this product,

substituting non-factory or inferior parts, or using

maintenance procedures other than outlined could

drastically affect performance and be hazardous to

personnel and equipment, and may void existing

warranties.

WARNING: Standard industry safety practices must be

adhered to when working on this or any other process

control product. Specifically, personal protective and

lifting devices must be used as warranted.

Logix 1200 Positioner Overview

The Logix 1200 positioner is a two-wire, 4-20 mA input,

digital valve positioner which utilizes the HART protocol

to allow two-way remote communications with the

positioner. The positioner can control both double and

single-acting actuators and operates with a signal as

low as 3.2 mA. Below 3.2 mA, the operation and

communication are suspended (3.2 mA is required

to restart the positioner).

Since the positioner is insensitive to supply pressure

changes and can handle supply pressures from 35 to

150 psig, a supply regulator is usually not required;

however, an air filter is required due to the close

clearances in the spool assembly.

NOTE: The air supply should conform to ISA Standard S7.3

(a dew point at least 18 degrees Fahrenheit (7° C) below

ambient temperature, particle size below five microns, and

oil content not to exceed one part per million).

Positioner Operation

The Logix 1000 positioner is an electric feedback

instrument. Positioning is based on a balance of two

signals: one proportional to the command input signal

and the other proportional to the valve stem position.

The supply pressure for the positioner pressure

modulator is tapped off the main supply and is filtered

as it passes through a field-replaceable, coalescing filter

element in the module. Next it passes through an internal

pressure regulator that regulates it to approximately

22 psig. The air then passes through an orifice that

restricts the flow and air consumption.

The pressure modulator further controls the air to

6-12 psig, using a spring-diaphragm flapper that is

attracted by an electromagnet to a nozzle. A temperature

compensated hall effect sensor mounted on a circuit

board senses the spool valve position. The hall effect

sensor and circuitry create an inner feedback loop,

which determines how much current to send to the

electromagnet for a desired spool valve position. The

electromagnet in the feedback loop varies the nozzle-

flapper spacing, which regulates the output pressure to

6-12 psig, proportional to the digital position algorithm.

When the command and stem position signals are equal,

the system will be in equilibrium and the valve stem will

be in the position called for by the command signal.

If these opposing signals are not equal, the spool valve

will move up (or down) and, by means of the pressure

modulator, change the output pressures and flow rate.

This causes the actuator pistons to move until the signal

of the position sensor equalizes with the command signal.

FCD AXAIM0064-00 (AUTO-64) 08/04 Page: 1 of 16

(AXAIM0096-00) Logix 1000 IOM 8/6/04 3:34 PM Page 1

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Résumé du contenu

Page 1 - Positioner Operation

Logix Series 1000 Digital PositionerInstallation, Operation and Maintenance InstructionsFlowserve Corporation 1350 N. Mountain Springs Parkway 1978 Fo

Page 2 - Table of Contents

Page 3 - Mounting the Positioner

Page 4 - Tubing Positioner to Actuator

Page 5 - Cable Requirements

Page 6 - Driver Module Assembly

Page 7 - Spool Valve Cover

Page 8 - Internal Coalescing Filter

Page 9 - Main PCB Assembly

Logix Series 1000 Digital PositionerInstallation, Operation and Maintenance InstructionsFlowserve Corporation 1350 N. Mountain Springs Parkway 1978 Fo

Page 10 - Field Terminations

Logix Series 1000 Digital PositionerInstallation, Operation and Maintenance InstructionsFlowserve Corporation 1350 N. Mountain Springs Parkway 1978 Fo

Page 11 - Quick-Cal Button

Logix Series 1000 Digital PositionerInstallation, Operation and Maintenance InstructionsFlowserve Corporation 1350 N. Mountain Springs Parkway 1978 Fo

Page 12

Logix Series 1000 Digital PositionerInstallation, Operation and Maintenance InstructionsFlowserve Corporation 1350 N. Mountain Springs Parkway 1978 Fo

Page 13 - Minimum Pressure

Logix Series 1000 Digital PositionerInstallation, Operation and Maintenance InstructionsFlowserve Corporation 1350 N. Mountain Springs Parkway 1978 Fo

Page 14 - Figure 19: Exploded View

Page 15

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