Flowserve Apex 5000 Positioner User Manual

Apex 5000 positioner

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© 2011, Flowserve Corporation, Provo, UT

B00062a4 (AC-53 MFG) 03/11

Apex 5000 Positioner

Installation, Operation and Maintenance Instructions

CONTROLS

Accord Controls

765 South 100 East

Phone: 801 373 4576

A Unit of Flowserve Corporation

Provo, Utah 84606-6160

Facsimile: 801 489 2591

www.accord-controls.com

Page 1 of 8

Principles of Operation:

The Apex 5000 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 5000) or electric current (Models

5100, 5200, 5300, 5400 and 5600). 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 (of linear movement).

Rotation is fed back through the positioner shaft and

cam. Cam rotation causes rotation of both follower arm

and feedback arm about their respective pivot pins.

Rotation of feedback arm changes compression in the

spring which forces the balance beam and spool back

to their neutral positions. This shuts off the flow of air

to the actuator and rotation stops.

Installation:

The Apex 5000 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 120 psi for supply and 50 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.

1. Mount bracket to actuator. Tighten bolts finger tight only at

this time.

2. Install coupler (if required) on actuator shaft making sure

it is centered.

3. Verify that orientation of actuator and coupler flats matches

positioner shaft flats. If necessary, rotate the cam before

installing positioner (see “Cam Installation”).

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:

The supply and both output ports

are female 1/4" NPT. The instrument port is female 1/8"

NPT. All positioners are supplied with either gauges or pipe

plugs in the gauge ports. 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 1 and 2 to actuator. Port 2 is

always

connected to the actuator port used to drive

actuator away from its start or fail position (the factory cam

setting is full clockwise at minimum input). Port 1 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 up (see “Cam Installation”).

6. Connect supply air to the port marked “S”.

7. Connect instrument signal air to the port marked “I” for

model 5000. For models 5100, 5200 or 5400, connect 4-20

mA and(-). For intrinsically safe applications (Model 5400

only), see Figure 1 for barrier requirements and

schematics. The “I/P” is factory calibrated and should not

require adjustment . See “I/P Module Calibration” if

adjustments are necessary.

8. Stroke actuator/valve two or three times to align positioner,

coupler and actuator. With 50% input (actuator/valve at 45

degrees), tighten all mounting bolts. Stroke actuator/valve

again to verify there is no misalignment throughout stroke.

Apex 5000 Positioner

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