Flowserve APEX W7000 Pneumatic Positioner Manual de usuario descargar pdf

Principles of Operation:

The Apex W7000 positioner causes rotation (or linear movement) of valve actuator in proportion to an input signal.

This signal may take the form of pneumatic pressure (Model W7000 and W7600) or electric current (Models

W7100,W7200 W7400 W7500). Supply pressure is directed to the actuator through a precision spool valve. As input

pressure is varied, the balance beam shifts away from its neutral position. The spool also shifts and a differential

pressure is created across the actuator causing rotation (or linear movement). Actuator motion is fed back through the

positioner shaft and cam. Cam rotation causes movement of the feedback arm, changing compression in the

feedback spring, forcing the balance beam and spool back to their neutral position. This shuts off the flow of air to the

actuator and rotation stops.

Installation:

The Apex W7000 positioner can be installed on rotary and linear actuators. Actuators can be either double acting or

spring return. Positioners can be set up for rotation in either direction (direct or reverse acting).

Supply Air Requirements:

Air pressure must be limited to 150 psi for supply and 30 psi for instrument signal to avoid damage to the positioner.

Supply air must be clean, dry and oil free instrument quality air in accordance with ISA S7.3 specifications (dew point

>18 degrees below ambient temperature, particle size <5 microns, oil content <1ppm.

Mounting:

The following instructions apply to rotary actuators only. Linear applications require special mounting and coupling

(consult factory).

1. Mount bracket to actuator. Tighten bolts finger tight only at this time. A standard bracket is available for

mounting to NAMUR compliant actuators.

2. Install coupler (not required if installing to a NAMUR compliant actuator) on actuator shaft making sure it is

centered.

3. Verify that orientation of actuator (and coupler) flats match positioner shaft flats. If necessary, rotate the cam

before installing positioner (see “Cam Installation”). NOTE: Actuator should be in orientation corresponding to

zero input signal.

4. Install positioner onto bracket. Make sure positioner shaft and coupler are engaged and centered. Tighten bolts

finger tight only at this time.

Pneumatic Connections: All pneumatic connections, the supply, both output ports, and instrument ports are

female ¼” NPT. All connections require user-supplied tubing fittings. Caution: Do not use Teflon tape as a pipe

thread sealant. Use only a liquid or paste non-hardening pipe sealant on the threads.

5. Connect positioner ports C1 and C2 to actuator. Port C2 is always connected to the actuator port used to drive

actuator away from its start or fail position (the factor cam setting is full clockwise at minimum input). Port C1 is

connected to the opposite port or may be plugged for spring return actuators. Note: For fail counterclockwise

applications, the cam must be flipped over so the “R” side is facing upwards (see “Cam Installation”).

WORCESTER CONTROLS

Installation

Operation

Maintenance

APEX W7000 Pneumatic Positioner

FCD WCENIM2077-01

1 2 3 4 5 6 ... 11 12

Indice de contenidos

Pagina 1 - Maintenance

1 S Principles of Operation: The Apex W7000 positioner causes rotation (or linear movement) of valve actuator in proportion to an input signal.

Pagina 2

10 APEX W7000 SYSTEM -I/P CONVERTERS -DOME INDICATOR -GAUGES -SWITCHBOXES

Pagina 3 - Calibration Procedure:

11 DIMENSIONS:

Pagina 4 - Cam Adjustment/Replacement:

12 Representative: Bulletin FCD WCENIM2077-01 Flowserve Corporation 1978 Foreman Drive Cookeville, Tennessee, USA, 38501 931 432-4021 Flowse

Pagina 5

2 6. Connect supply air to port marked “S”. 7. Connect instrument signal air to the port marked “I” for model W7000 and W7600. For models

Pagina 6 - Electrical Specifications

3 Calibration Procedure: 1. Apply 0% input signal (0% = 20 kPa, 3 psi, or 4 mA). 2. Wait for steady state. It is important to wait for stead

Pagina 7 - Maintenance:

4 Cam Installation: Introduction: The standard cam (labeled “K1” features linear, 90 degree operation for full 3-15 psi input, 3-9 and 9-15 psi

Pagina 8

5 Split Range lobe is used to achieve high resolution in split range applications, where only a portion of the signal is used to obtain 90 degree

Pagina 9

6 Electrical Specifications Model Agency Approvals Hazardous Location Rating1 Max Voltage (vdc) Min. Voltage (vdc) Max. Current (mA) W7000 N

Pagina 10 - APEX W7000 SYSTEM

7 Filter Plug Replacement: Caution: Do not operate the unit without filter and filter plug installed. Do not attempt to unscrew filter plug whi

Pagina 11

8 SPARE PARTS APEX W7000 DWG FLS Description Qty No p/n 1 Housing N/A 2 X01370 Front cover incl. O-ring and screws 1 3 X01371 Connec

Pagina 12 - Representative:

9 6 X01375 Gasket W7100 1 7 X01376 Diaphragm cover incl. O-ring 1 8 X01377 Diaphragm 1 9 X01378 Diaphragm washer 2 10 X01379 Balance arm 1 13 X01380

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Flowserve APEX W7000 Pneumatic Positioner Manual de usuario

Busca en linea o descarga Manual de usuario para Hardware Flowserve APEX W7000 Pneumatic Positioner. Flowserve APEX W7000 Pneumatic Positioner User Manual Manual de usuario

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