PALMSTIERNAS D3 Manuale utente
Manual
D3
Digital
Positioner
2
Contents
1.Introduction ...................................................................................................... 3
Safety instruction................................................................................................ 3
2. Storage .............................................................................................................. 4
General ............................................................................................................... 4
Storage indoors ................................................................................................... 4
Storage outdoors or for a longer period.............................................................. 4
Storage in a warm place ..................................................................................... 4
3. Design................................................................................................................ 5
4. Variants............................................................................................................. 6
5. Function............................................................................................................ 7
Double action function ....................................................................................... 7
Single action function......................................................................................... 7
6. Installation........................................................................................................ 8
Air supply requirements ..................................................................................... 8
Mounting ............................................................................................................ 9
Connections ........................................................................................................ 10
Air ....................................................................................................................... 10
Electrical connection .......................................................................................... 10
Dimensions ......................................................................................................... 10
Single action positioner (Direct function) .......................................................... 11
Actuator with closing spring............................................................................... 11
Actuator with opening spring ............................................................................. 11
Double action positioner (Direct function)......................................................... 11
Double action actuator........................................................................................ 11
Electrical connections......................................................................................... 12
7. Control............................................................................................................. 14
Menus and pushbuttons ...................................................................................... 14
Other functions ................................................................................................... 14
Menu indicator.................................................................................................... 15
Menus ................................................................................................................. 15
Changing parameter values ................................................................................ 15
Menu system....................................................................................................... 16
First start ............................................................................................................. 17
8. Maintenance/service ........................................................................................ 37
Disassembling PMV D3 ..................................................................................... 37
Silencer ............................................................................................................... 39
Spindle adapter ................................................................................................... 39
Potentiometer...................................................................................................... 40
Transmitter boards .............................................................................................. 41
Disassembling PMV D3 Ex................................................................................ 44
Filter change ....................................................................................................... 45
Converting for remote control ............................................................................ 46
9. Trouble shooting .............................................................................................. 47
10. Technical data ................................................................................................ 48
Certificates.......................................................................................................... 48
11. Spare parts ..................................................................................................... 56
3
1. Introduction
The PMV D3 is a digital positioner de-
signed primarily for controlling adjustable
valves.
The positioner can be used with single or
double action actuators with either rotary or
linear movement.
The D3 can be equipped with modules
for feedback, limit switches, and a pressure
gauge block.
Safety instruction
Read the safety instructions in this manual carefully before using the product. The
installation, operation, and maintenance of the product must be done by staff with the
necessary training and experience. If any questions arise during installation, contact
the supplier/sales office before continuing work.
Warning
• The valve package moves when in operation and can cause personal injury or damage
if handled incorrectly.
• If the input signal fails or is switched off, the valve moves quickly to its end position.
• If the compressed air supply fails or is turned off, fast movements can occur.
• The valve is not controlled by the input signals when in the Out of service mode. It
will open/close in the event of a leak.
• If a high value is set for Cut off, fast movements can occur.
• When the valve is controlled in the Manual mode, the valve can move quickly.
• Incorrect settings can cause self-oscillation, which can lead to damage.
Important
• Always turn off the compressed air supply before removing or disconnecting the air
supply connection or the integral filter. Remove or disconnect with care because C- is
still under pressure even after the air supply is turned off.
• Always work in an ESD protected area when servicing the PCB´s. Make sure the
input signal is switched off.
• The air supply must be free from moisture, water, oil and particles.
The modules can be factory assembled
before delivery or fitted later.
The modules for feedback and limit
switches can contain the following:
Feedback 4-20 mA and one of the
following functions:
- Two mechanical contacts
- Two reed switches
- Two inductive sensors, DIN 19234
4
2. Storage
General
The PMV positioner is a precision in-
strument. Therefore it is essential that it is
handledand stored in theright way.Always
follow the instructions below!
N.B. As soon as the positioner is
connected and started, internal air leakage
will provide protection against corrosion
andprevent the ingress of moisture.Forthis
reason, the air supply pressure should
always be kept on.
Storage indoors
Store the positioner in its original
packaging. The storage environment must
be clean, dry, and cool (15 to 26°C, 59 to
79°F..
Storage outdoors or for a longer
period
If the positioner must be stored
outdoors, it is important that all the cover
screws are tightened and that all connections
are properly sealed. The unit should be
packed with a desiccant (silica gel) in a
plastic bag or similar, covered with plastic,
and not exposed to sunlight, rain, or snow.
This is also applicable for long-term
storage (more than 1 month) and for long
transport by sea.
Storage in a warm place
When the positioner is stored in a warm
place with a high relative humidity and is
subjectedto daily temperaturevariations, the
air inside the unit will expand and contract.
This means that air from outside the unit
may be drawn into the positioner. Depending
on the temperature variations, relative
humidity,andotherfactors, condensation and
corrosion can occur inside the unit, which in
turn can give rise to functional disorders or
a failure.
5
3. Design
Filter Display, control push buttons
Positional feedback Processor and motherboard
Terminal block
Adjusting-
screws,
damping
Valve block
The D3 positioner contains:
• Electronic board with microprocessor,
HART modem, display, etc.
• Valve block
• Positional feedback with potentiometer
• Sealed compartment for electrical
connections
The push buttons and display are
accessible underneath the aluminium
cover, which is sealed with an O-ring.
The figure shows the D3 with the cover
removed.
6
4. Variants
D3 270°deg.
D3 up to 270°deg for extended travel
range is available. It features all benefits and
options similar to the standard D3.
Communication with HART or Profibus is
possible.
D3 Explosion proof
The digital positioner D3 is available in
explosion proof enclosure. It features the
same easy to use user interface for local con-
figuration as D3. Communication with Hart
or Profibus is possible.
Further features are gauge ports and local
graphic LCD display.
D3 Intrinsically safe
The digital positioner D3 is available in
intrinsically safe version for installation in
hazardous areas. It features the same easy to
use user interface for local configuration as
D3. Communication with HART or Profibus
ispossible. It features all benefitsandoptions
similar to the Standard D3 positioner, gauge
block, local graphic LCD display and feed-
back option etc.
D3 remote mounted
The D3 with remote mount is now
available on the market for order. This ver-
sion is suitable for installations in severe
applications e.g. vibrations, high or low
temperature corrosive environment, high
mountings or difficult of access, etc. A flat
or dome style indicator can be fitted on the
feedback box installed on the actuator. Max
recommended distance between D3 and
remote unit is 5 m.
7
5. Function
Control signal 4 - 20 mA
Potentiometer
Piezo-valve 1
Piezo-valve 2
Diaphragm
Pressure
regulator
Replaceable
Filter
Air supply 2 - 6 bar
1.2 bar
Venting
Venting H
G
Double action function
The control signal and the feedback
potentiometer position are converted to di-
gital signals that are processed with a PID
algorithm in the microprocessor. This prov-
ides control signals to the two piezo-valves.
The two piezo-valves are closed in the
schematic diagram above and have no effect
on the valvesAand D.Air from the pressure
regulator is lead through the open valveAto
the valve B, which opens. The supply
pressure can now pass through valve B to
the actuator via H. The actuator then moves
in the direction of the arrow. At the same
Signal converter
and
microprocessor
A
B
C
DEF
➾
time, air from valve A keeps valve C open
and allows venting of the actuator.
When both the piezo-valves open, valve
A closes but valve D opens and controls
valves E and F to that the actuator moves in
a direction opposite to the arrow. When only
piezo-valve 1 is open, the actuator is
stationary.
Single action function
Valve B is used for the supply air and
valve F for venting.
C– C+
Actuator
8
6. Installation
Tubing
Use tubes with an inner diameter of mi-
nimum 6 mm (1/4”).
Air supply requirements
Max. air supply pressure, see the section
Technical Data, Section 10.
The air supply must be free from
moisture, water, oil, and particles.
The air must come from a refrigeration
dried supply or be treated in such a way that
its dew point is at least 10°C (18°F) below
the lowest expected ambient temperature.
To ensure a stable and problem-free air
supply, we recommend the installation of a
filter/pressure regulator <40µas close to the
positioner as possible.
Before the air supply is connected to the
positioner, werecommendthe hose is opened
freely for 2 to 3 minutes to allow any con-
tamination to be blown out. Direct the air jet
into a large paper bag to trap any water, oil,
or other foreign materials. If this indicates
that the air system is contaminated, it should
be properly cleaned.
WARNING! Do not direct the
open air jet towards people or
objects because it may cause
personal injury or damage.
Poor air supplies are the main source
of problems in pneumatic systems.
9
Mounting
N.B. If the positioner is installed in a
hazardous environment, it must be of a
type approved for this purpose.
The D3 positioner has an ISO F05
footprint, A. The holes are used to attach it
to the mounting bracket B, which is suitable
for most types of linear actuator.
The spindle adapter C can be changed to
suit the actuator in question.
Remove the existing adapter using two
screwdrivers. Check that the spring ring on
the positioner spindle is undamaged and fit
the new adapter.
Itisimportantthatthepositioner’s spindle
and the arms, that transfer the actuator
movements, are correctly mounted.Any ten-
sion between these parts can cause incorrect
operation and abnormal wear.
Assembly examples A B
C
C
Rotary movement Linear movement
10
C– S C+
For data for air and electrical
connections, see section
Technical Data on page 48.
Connections
Air:
Port S Supply air, 2-7 bar
Port C+ Connection to actuator
Port C- Connection to actuator
(only for double action)
Electrical connection
See page 12, 13.
Dimensions
Air connections:
1/4" NPT alt. G 1/4"
Electrical connection:
M20 x 1.5 alt. NPT 1/2"
Loctite 577 or equivalent is recommended
as a sealant.
Must be plugged when converting to
single action function.
The D3 Ex positioner has an ISO F05
footprint, A. The holes are used to attach it
to the mounting bracket B, which is suitable
for most types of linear actuators.
The spindle adapter C can be changed to
suit the actuator in question, see previous
page.
A
B
C
Indice
Altri manuali PALMSTIERNAS Posizionatore della valvola
