Greenheck F10 Installation Manual

1.0 bar

Standard setting

0.2 bar

0

0° 90°

Initial settings

Installation and

Operation

Pneumatic Positioner F10

CCW Direct

CW Reverse

Accredited by the
Dutch Council for
Certification

DOC.6.41.EI 10.98

F 10 Pneumatic Positioner

Where to Find Information

Page
Product Description 1
Operating Principle 2
Installation, Rotary Actuators

- Mechanical 3

-Pneumatic, Double Acting 3

-Pneumatic, Single Acting 4

-Air Supply Requirement 4

Installation, Linear Actuators

-Mechanical installation 5

-Pneumatic installation 6

Calibration

-Initial Settings 7

-Cam Changes 7

-Zero Adjustment 8

-Range Adjustment 8

Trouble Shooting 9

General Specification:

Metric Imperial

Hysteresis : 0.6%
Linearity : 1.0%
Air Flow : 210 Nl/min (at 6 bar) : (7.4 SCFM at 87 psi)
Air Consumption : 15 Nl/min (at 6 bar) : (0.6 SCFM at 87 psi)
Min. volume
actuator : 0.1 Nl : 6.1 in
Temperature : -20° to +80° C : (-4° to +176°F)
Enclosure : IP54 (option IP65) : NEMA 3 (option NEMA 4)
Mounting : VDI/VDE 3845 or

IEC 534/6
Air Entry : G 1/4" : (1/4" NPT)
Air Supply : 1.4 to 8.6 bar : (21 to 125 psi).
Input Signal

- Standard : 0.2 to 1.0 bar : (3 to 15 psi).

- Adjustable : 0.2 to 0.6 bar : (3 to 9 psi).

: 0.6 to 1.0 bar : (9 to 15 psi).

3

Media : Non-lubricated instrument air, filtered at 25 micron.

: Dew point should be 10°C (18°F) below enviromental temperatur.
: Air quality class 3-2-3 accord. to ISO 8573-1.

Product Description

The F10 positioner provides the means for a pneu­matic actuator to be positioned to any point between
full open and full closed position. This allows accu­rate setting of rotary and linear control valves as
well as a wide range of dampers and similar de­vices. The actuator’s movement is controlled in
proportion to a 0.2 to 1 bar (3-15 psi) incoming
pressure signal.

The Posiflex F10 positioner provides:

-A single model covers both single acting and
double acting actuators.

- External Zero Adjustment.

- High accuracy due to “high gain” amplification.

-Four Position Cam for Linear Actuators
provides for linear, quick opening, equal per­centage and split range characteristics.

- Three Position Cam for Rotary Actuators
provides for linear, quick opening and equal
percentage characteristics. A special cam for
rotary actuator provides for split range.

- Direct or Reverse Acting.

F 10 positioners are available for both rotary and
linear applications and because of the standard­ized mounting interface (VDI/VDE 3845 or IEC 534/

6), installation is simple and trouble free. Mounting
kits are available for most actuator types.

The purely Pneumatic mode of operation means
that F10 positioners may be used in explosion
hazardous areas without any additional protection
being necessary.

A wide range of modular control options are avail­able: These cover the addition of gauges, indicat­ing switches, position transmitters, etc.

F10

Pneumatic
POSITIONER

Open

Closed

1.

Operating Principles

The Posiflex F10 Pneumatic Positioner is a high
gain, motion balance instrument, suitable for use
with a wide variety of single acting and double
acting rotary and linear actuators.

Referring to the diagram below: The positioner is
shown in a mid position with INSTRUMENT and
SUPPLY air connected. The flapper and nozzle (5)
maintains the instrument in it’s “balanced” state
with just enough pilot air pressure being applied to
the spool valve for it to hold the actuator in it’s “set”
position.

When the actuator is required to move to a new
“more open” position, the INSTRUMENT pressure
signal is increased accordingly. This closes the air
gap at the nozzle (5) causing an amplified pressure

1. Balance assembly.

2. Pneumatic valve block.

3. Actuator.

4. Mechanical feedback.

5. Flapper and nozzle.

6. Cam.

Output

increase at the spool valve end, this in turn dis­places the spool and allowing an increasing air
pressure at the “open” side of the actuator and
exhausting air from the “close” side.
When the actuator moves position it rotates the
cam (6) in a CCW (counter clockwise) direction
and in doing so it progressively opens the air gap
at the nozzle (5). On reaching the new set point the
pilot pressure is reduced to the “balanced” state
and again locks the actuator in new set position.

Similarly a decreasing INSTRUMENT pressure will
cause a CW (clockwise) positioner movement.

The operation for single acting actuators is the
same except that the unused pneumatic connection
OUTPUT 2 is plugged off.

2

5

Supply

Close

3

1

Open

4

Instrument

6

2.