WIKA PSD-31 User Manual [en, de, es, fr]

Operating instructions
Betriebsanleitung
Mode d'emploi
Manual de instrucciones

Pressure switch model PSD-3x
Druckschalter Typ PSD-3x
Pressostat type PSD-3x
Presostato modelo PSD-3x

Pressure switch model PSD-30

GB

D

F

E

GB

Operating instructions model PSD-3x Page 3 - 32

D

Betriebsanleitung Typ PSD-3x Seite 33 - 64

F

Mode d'emploi type PSD-3x Page 65 - 94

E

Manual de instrucciones modelo PSD-3x Página 95 - 125

© 2010 WIKA Alexander Wiegand SE & Co. KG
All rights reserved. / Alle Rechte vorbehalten.
WIKA® is a registered trademark in various countries.
WIKA® ist eine geschützte Marke in verschiedenen Ländern.

Prior to starting any work, read the operating instructions!
Keep for later use!

Vor Beginn aller Arbeiten Betriebsanleitung lesen!
Zum späteren Gebrauch aufbewahren!

Lire le mode d'emploi avant de commencer toute opération !
A conserver pour une utilisation ultérieure !

¡Leer el manual de instrucciones antes de comenzar cualquier trabajo!
¡Guardar el manual para una eventual consulta posterior!

2 WIKA operating instructions pressure switch model PSD-3x

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Contents

Contents

1. General information 4

2. Safety 6

3. Specications 9

4. Design and function 15

5. Transport, packaging and storage 15

6. Commissioning, operation 16

7. Maintenance and cleaning 29

8. Faults 30

9. Dismounting, return and disposal 31

Appendix 1: EC Declaration of Conformity for model PSD-3x 63

GB

Declarations of conformity can be found online at www.wika.com.

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3WIKA operating instructions pressure switch model PSD-3x

1. General information

1. General information

■

The pressure switch described in the operating instructions has been designed and manufactured

GB

using state-of-the-art technology. All components are subject to stringent quality and environmental
criteria during production. Our management systems are certied to ISO 9001 and ISO 14001.

■

These operating instructions contain important information on handling the instrument. Working
safely requires that all safety instructions and work instructions are observed.

■

Observe the relevant local accident prevention regulations and general safety regulations for the
instrument's range of use.

■

The operating instructions are part of the product and must be kept in the immediate vicinity of the
instrument and readily accessible to skilled personnel at any time.

■

Skilled personnel must have carefully read and understood the operating instructions, prior to
beginning any work.

■

The manufacturer's liability is void in the case of any damage caused by using the product contrary
to its intended use, non-compliance with these operating instructions, assignment of insuciently
qualied skilled personnel or unauthorised modications to the instrument.

■

The general terms and conditions contained in the sales documentation shall apply.

■

Subject to technical modications.

■

Further information:

- Internet address: www.wika.de / www.wika.com

- Relevant data sheet: PE 81.67

- Application consultant:

Tel.: [phone]
E-mail: [e-mail]

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1. General information

Explanation of symbols

WARNING!

... indicates a potentially dangerous situation which can result in serious injury or death if not
avoided.

CAUTION!

... indicates a potentially dangerous situation which can result in light injuries or damage to
the equipment or the environment if not avoided.

Information

… points out useful tips, recommendations and information for ecient and trouble-free
operation.

Abbreviations

U

+

U- Negative power terminal
S

+

SP1 Switch point 1
SP2 Switch point 2
C Communication with IO-Link

Positive power terminal

Analogue output

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5WIKA operating instructions pressure switch model PSD-3x

2. Safety

2. Safety

WARNING!

GB

2.1 Intended use

The pressure switch is used to convert pressure into an electrical signal indoors and outdoors.

The instrument has been designed and built solely for the intended use described here, and may only
be used accordingly.

The technical specications contained in these operating instructions must be observed. Improper
handling or operation of the instrument outside of its technical specications requires the instrument to
be taken out of service immediately and inspected by an authorised WIKA service engineer.

The manufacturer shall not be liable for claims of any type based on operation contrary to the intended
use.

Before installation, commissioning and operation, ensure that the appropriate pressure
switch has been selected in terms of measuring range, design and specic measuring
conditions.
Non-observance can result in serious injury and/or damage to the equipment.

WARNING!

■

Open the connections only after the system has been depressurised.

■

Observe the working conditions in accordance with Chapter 3 "Specications".

■

Always operate the pressure switch within the overpressure safety range.

Further important safety instructions can be found in the individual chapters of these
operating instructions.

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2. Safety

2.2 Personnel qualication

WARNING!
Risk of injury if qualication is insucient!

Improper handling can result in considerable injury and damage to equipment.
The activities described in these operating instructions may only be carried out by skilled
personnel who have the qualications described below.

Skilled personnel

Skilled personnel are understood to be personnel who, based on their technical training, knowledge
of measurement and control technology and on their experience and knowledge of country-specic
regulations, current standards and directives, are capable of carrying out the work described and
independently recognising potential hazards.

Special operating conditions require further appropriate knowledge, e.g. of aggressive media.

2.3 Special hazards

WARNING!

For hazardous media such as oxygen, acetylene, ammable or toxic gases or liquids,
and refrigeration plants, compressors, etc., in addition to all standard regulations, the
appropriate existing codes or regulations must also be followed.

WARNING!

Residual media in dismounted pressure switches can result in a risk to persons, the
environment and equipment.
Take sucient precautionary measures.

GB

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7WIKA operating instructions pressure switch model PSD-3x

2. Safety

2.4 Labelling / safety marks

Product label

GB

Measuring range

P# Product No.
S# Serial No.

If the serial number becomes illegible (e.g. due to mechanical damage or overpainting), traceability will
no longer be possible.

Explanation of symbols

General danger symbol

cULus, Underwriters Laboratories Inc.®

The instrument was inspected in accordance with the applicable US standards and certied
by UL.
Furthermore, instruments bearing this mark comply with the applicable Canadian
standards on safety.

CE, Communauté Européenne

Instruments bearing this mark comply with the relevant European directives.

Analogue signal Switching output 1

Power supply

Switching output 2

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3. Specications

3. Specications

3.1 Measuring ranges

Relative pressure

bar 0 ... 1

psi 0 ... 15

1)

0 ... 40 0 ... 60 0 ... 100 0 ... 160 0 ... 250 0 ... 400 0 ... 600

1)

0 ... 500 0 ... 1,000 0 ... 1,500 0 ... 2,000 0 ... 3,000 0 ... 5,000 0 ... 8,000

Absolute pressure

0 ... 15

1)

1)

bar 0 ... 1
psi

Vacuum and +/- measuring range

bar -1 ... 0
psi -14.5 ... 0 -14.5 ... 15 -14.5 ... 30 -14.5 ... 50 -14.5 ... 100 -14.5 ... 160 -14.5 ... 200 -14.5 ... 300

The given measuring ranges are also available in kg/cm2 and MPa.

1) Not available for PSD-31.

1)

Overpressure limit

2 times

3.2 Display

14-segment LED, red, 4-digit, 9 mm character size
Display can be turned electronically through 180°

Update (adjustable): 100, 200, 500, 1,000 ms

1)

0 ... 1.6

0 ... 25

0 ... 1.6
0 ... 25

-1 ... 0.6 1)-1 ... 1.5 -1 ... 3 -1 ... 5 -1 ... 9 -1 ... 15 -1 ... 24

0 ... 2.5 0 ... 4 0 ... 6 0 ... 10 0 ... 16 0 ... 25

1)

1)

1)

1)

0 ... 30

0 ... 2.5 0 ... 4 0 ... 6 0 ... 10 0 ... 16 0 ... 25
0 ... 30

0 ... 50 0 ... 100 0 ... 160 0 ... 200 0 ... 300

1)

0 ... 50 0 ... 100 0 ... 160 0 ... 200 0 ... 300

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3. Specications

3.3 Output signals

Switching output 1 Switching output 2 Analogue signal

PNP - 4 ... 20 mA

GB

PNP - DC 0 ... 10 V
PNP PNP ­PNP PNP 4 ... 20 mA
PNP PNP DC 0 ... 10 V

Alternatively also available with an NPN instead of a PNP switching output.
With the IO-Link option, switching output 1 is always PNP.

Zero oset adjustment

maximum 3 % of span

Analogue signal

Current output load: ≤ 0.5 kΩ
Voltage output load: > 10 kΩ
Settling time: 3 ms

Switching output

Switching output 1 and 2 are individually adjustable

Normally-open and normally-closed function: freely adjustable
Window and hysteresis function: freely adjustable

Switching current

■

without IO-Link: maximum 250 mA

■

with IO-Link: maximum 100 mA

Switching voltage: Power supply - 1 V
Settling time: ≤ 10 ms

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3. Specications

3.4 Voltage supply

Power supply

DC 15 ... 35 V

The power supply for the pressure switch must be made via an energy-limited electrical circuit in accordance with section 9.3 of UL/EN/
IEC 61010-1 or an LPS to UL/EN/IEC 60950-1 or class 2 in accordance with UL1310/UL1585 (NEC or CEC). The power supply must be
suitable for operation above 2,000 m should the pressure switch be used at this altitude.

Current consumption

maximum 100 mA

Total current consumption

■

without IO-Link: maximum 600 mA including switching current

■

with IO-Link: maximum 500 mA including switching current

3.5 Accuracy

Analogue signal

≤ ± 1.0 % of span

Including non-linearity, hysteresis, zero-point and full scale deviations (corresponds to measured error per IEC 61298-2). Calibrated in
vertical mounting position with process connection facing downwards.

Non-linearity: ≤ ±0.5 % of span (BFSL, IEC 61298-2)
Long-term drift:

Switching output

Adjustment accuracy:

Display

≤ ±1.0 % of span ± 1 digit

≤ ±0.2 % of span (IEC 61298-2)

≤ ±0.5 % of span

GB

Temperature error in rated temperature range

■

typical: ≤ ±1.0 % of span

■

maximum: ≤ ±2.5 % of span

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11WIKA operating instructions pressure switch model PSD-3x

3. Specications

Temperature coecients in rated temperature range

Mean TC zero point: ≤ ±0.2 % of span/10 K (typical)
Mean TC span: ≤ ±0.1 % of span/10 K (typical)

GB

3.6 Reference conditions

Temperature: 15 ... 25 °C
Atmospheric pressure: 950 ... 1,050 mbar
Humidity: 45 ... 75 % relative
Nominal position: Process connection lower mount (LM)
Power supply: DC 24 V
Load: see output signals

3.7 Operating conditions

Temperatures and humidity

Medium temperature: -20 ... +85 °C
Ambient temperature: -20 ... +80 °C
Storage temperature: -20 ... +80 °C
Rated temperature range: 0 ... 80 °C
Permissible humidity: 45 ... 75 % relative

Mechanics

Mounting position: as required
Vibration resistance: 10 g (IEC 60068-2-27, under resonance)
Shock resistance: 50 g (IEC 60068-2-6, mechanical)
Service life: 10 million load cycles

Ingress protection

IP 65 and IP 67

The stated ingress protection (per IEC 60529) only applies when plugged in using mating connectors that have the appropriate ingress
protection.

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3. Specications

3.7 Electrical connections

Connections

■

Circular connector M12 x 1; 4-pin

■

Circular connector M12 x 1; 5-pin

1) Only for version with two switching outputs and analogue signal

Electrical safety

Short-circuit resistance: S
Reverse polarity protection: U
Insulation voltage: DC 500 V
Overvoltage protection:

3.8 Materials

Wetted parts

Process connection: Stainless steel 316L
Pressure sensor

■

≤ 10 bar: Stainless steel 316L

■

> 10 bar: Stainless steel 13-8 PH

Non-wetted parts

Case: Stainless steel 304
Keyboard: TPE-E
Display window: PC
Display head: PC+ABS-Blend

1)

/ SP1 / SP2 vs. U

+

vs. U

+

-

DC 40 V

GB

-

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13WIKA operating instructions pressure switch model PSD-3x

3. Specications

3.9 Approvals, directives and certicates

Approvals

Standard without

GB

Option cULus

CE conformity

■

Pressure equipment directive 97/23/EC

■

EMC directive 2004/108/EC, EN 61326 emission (group 1, class B) and immunity (industrial application)

RoHS conformity

Yes

For special model numbers, e.g. PSD-30000, please note the specications stated on the delivery note.

For further specications see WIKA data sheet PE 81.67 and the order documentation.

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4. Design and function / 5. Transport, packaging and storage

4. Design and function

4.1 Description

By means of a sensor element and by supplying power, the prevailing pressure is converted into a
switching signal or an amplied standardised electrical signal via the deformation of a diaphragm. This
electrical signal varies in proportion to the pressure and can be evaluated accordingly.

PSD-30: Process connection with internal diaphragm (standard version).
PSD-31: Process connection with ush diaphragm for highly viscous or crystallising media that may clog

the bore of the process connection.

4.2 Scope of delivery

Cross-check the scope of delivery with the delivery note.
For ush design (model PSD-31) with pre-mounted sealings and protection cap.

5. Transport, packaging and storage

For the protection of the diaphragm, the ush design (model PSD-31) is delivered with a
special protection cap.

■

In order to avoid damage at the diaphragm and/or the process connection thread,
remove the protection cap by hand only just before installation.

■

Keep the protection cap for subsequent storage or transport.

■

Fit the protection cap before dismounting and transporting the instrument.

5.1 Transport

Check the instrument for any damage that may have been caused by transport. With ush design
(model PSD-31), additionally check the diaphragm for any optical damage.
Obvious damage must be reported immediately.

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15WIKA operating instructions pressure switch model PSD-3x

5. Transport, packaging and storage / 6. Commissioning, ...

5.2 Packaging

Do not remove packaging until just before mounting.
Keep the packaging as it will provide optimum protection during transport (e.g. change in installation
site, sending for repair).

GB

5.3 Storage
Permissible conditions at the place of storage:

■

Storage temperature: -20 ... +80 °C

■

Humidity: 45 ... 75 % relative humidity (no condensation)

In order to protect the diaphragm, mount the protection cap before storing the instrument.

WARNING!

Before storing the instrument (following operation), remove any residual media. This is of
particular importance if the medium is hazardous to health, e.g. caustic, toxic, carcinogenic,
radioactive, etc..

6. Commissioning, operation

CAUTION!

Only use the pressure switch if it is in perfect condition with respect to safety.
Check the following points before commissioning:

■

Check the diaphragm for any visible damage, since this is a safety-relevant component.

■

Leaking uid is indicative of damage.

Required tool: SW 27 open-ended spanner, screwdriver

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6. Commissioning, operation

6.1 Making the mechanical connection

■

With ush process connections (model PSD-31), remove the protection
cap not until shortly before mounting. During installation, ensure that the
diaphragm is not damaged.

■

The sealing faces at the instrument always have to be clean.

■

Only ever screw in, or unscrew, the instrument via the spanner ats.
Never use the case as a working surface.

■

The correct torque depends on the dimensions of the pressure connec­tion and the gasket used (form/material).

■

When screwing in, do not cross the threads.

■

For information on tapped holes and welding sockets, see Technical
Information IN 00.14 at www.wika.de.

Seal

GB

Parallel threads Tapered threads

per EN 837

per DIN 3852-E NPT, R and PT





Correct sealing of the process connections with parallel threads at the sealing face  must be made
using suitable at gaskets, sealing rings or WIKA prole sealings.
The sealing of tapered threads (e.g. NPT threads) is made by providing the thread with additional
sealing material such as, for example, PTFE tape (EN 837-2).

For further information on seals see WIKA data sheet AC 09.08 or under www.wika.com.

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17WIKA operating instructions pressure switch model PSD-3x

6. Commissioning, operation

6.2 Making the electrical connection

■

The instrument must be earthed via the process connection!

■

The power supply for the pressure switch must be made via an energy-limited electrical circuit in

GB

accordance with section 9.3 of UL/EN/IEC 61010-1 or an LPS to UL/EN/IEC 60950-1 or class 2 in
accordance with UL1310/UL1585 (NEC or CEC). The power supply must be suitable for operation
above 2,000 m should the pressure switch be used at this altitude.

■

For cable outlets, make sure that no moisture enters at the cable end.

Connection diagrams

Circular connector M12 x 1; 4-pin

Circular connector M12 x 1; 5-pin

Assignment

+

U- S

U

1 3 2 4 2

+

SP1 SP2

Assignment

+

U- S

U

1 3 5 4 2

+

SP1 SP2

Zero point adjustment

Check the indicated zero point on the display during commissioning.
Should an oset be displayed as a result of installation, this can be reset in programming mode with the
0SET parameter

■

Carry out zero point adjustment for relative and vacuum pressure measuring ranges in a
depressurised state.

■

Carry out zero point adjustment of absolute pressure ranges from 0 bar absolute
(vacuum). Since appropriate references are required for this, we recommend that this is
only carried out by the manufacturer.

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6. Commissioning, operation

6.2 Operating modes

System start

■

Display is fully activated for 2 sec.

■

When the pressure switch is powered up within the range of the hysteresis, the output switch is set to
"not active" by default.

Display mode

Normal operation, display pressure value

Programming mode

Setting the parameters

6.3 Keys and functions

The pressure switch has two operating modes, the display mode and the programming mode. The
selected operating mode determines the respective function of the key.

Jumping into the programming mode

Keep the "MENU" key pressed for approx. 5 seconds. If the password is set to ≠
0000, a password will be requested. If authentication is successful, then it enters
the programming mode, otherwise it reverts to display mode.

Returning to the display mode

Simultaneous pressing of both keys.

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19WIKA operating instructions pressure switch model PSD-3x

6. Commissioning, operation

Status switching output 2 (optional)

Status switching output 1

GB

Display mode
▶ Short press

Display of the unit

▶ Long press

Display of the set parameters see chapter

6.4 "Parameters"

Programming mode
▶ Short press

Menu up
Parameter value up (step-wise)

▶ Long press

Menu up
Parameter value up (fast)

4-digit LED display

■

Display pressure value

■

Display menu item

■

Display parameter

Display mode
▶ Short press

Display of the unit

▶ Long press

Jumping into the programming mode

Programming mode
▶ Short press

Menu up
Parameter value up (step-wise)

▶ Long press

Menu up
Parameter value up (fast)

Display mode
▶ Short press

Display of the unit

Programming mode
▶ Short press

Select menu item
Conrmation of the input

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6. Commissioning, operation

6.4 Parameters

Parameter Description

SP1/SP2 Hysteresis function: Switch point switching output (1 or 2)
FH1/FH2 Window function: Window high switching output (1 or 2)
RP1/RP2 Hysteresis function: Reset point switching output (1 or 2)
FL1/FL2 Window function: Window low switch output (1 or 2)
EF Extended programming functions
RES Return the set parameter to the factory settings
DS1/DS2
DR1/DR2
OU1 Switching function switching output (1 or 2)
OU2 HNO = hysteresis function, normally open

UNIT Changing units

0SET Oset adjustment (3 % of span)
DISM Display value in display mode

DISU Display update 1, 2, 5, 10 updates/second
DISR Rotate display indicator by 180°
RHL Clear the Min- and Max-value memories
PAS Password input, 0000 = no password

TAG Input of a 16-gure alphanumeric measuring point number

Switch delay time, which must occur without interruption before any electrical signal change occurs (SP1 or SP2)
Switch delay time, which must occur without interruption before any electrical signal change occurs (RP1 or RP2)

HNC = hysteresis function, normally closed
FNO = window function, normally open
FNC = window function, normally closed

(If the measuring range is outside the indication range, a unit switching is not possible and the UNIT parameter
is not indicated)

ACT = actual pressure value; LOW, HIGH = minimum, maximum temperature value OFF = display o;
SP1/FH1 = function switch point 1, RP1/FL1 = function reset point 1,
SP2/FH2 = function switch point 2, RP2/FL2 = function reset point 2

Password input digit by digit

GB

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21WIKA operating instructions pressure switch model PSD-3x

6. Commissioning, operation

Menu (programming and factory setting)

Display mode

Long press on menu key

GB

Programming mode

SP1 / FH1 Value (Min: MBA +0.5 % Max: MBE) Instrument nominal pressure

RP1 / FL1 Value (Min: MBA Max: SP1 -0.5 %) Instrument nominal pressure -10 %

SP2 / FH2 Value (Min: MBA +0.5 % Max: MBE) Instrument nominal pressure

RP2 / FL2 Value (Min: MBA Max: SP2 -0.5 %) Instrument nominal pressure -10 %

EF RES Yes / No Reset to factory setting

END END

Display mode

DS1 Value 0 ... 50 s 0 s

DR1 Value 0 ... 50 s 0 s

DS2 Value 0 ... 50 s 0 s

DR2 Value 0 ... 50 s 0 s

OU1 PARA HNO, HNC, FNO, FNC HNO

OU2 PARA HNO, HNC, FNO, FNC HNO

UNIT Unit BAR, MPA, KPA, PSI, KG/cm

0SET Yes / No

DISU Value 1/2/5/10 update/second 0 s

DISR Yes / No Rotate display by 180°

RHL Yes / No Reset HIGH, LOW

PAS Value Password without

TAG Value Measuring point number without

Legend:
MBA = Start of measuring range
MBE = End of measuring range

Zero Point adjustment 3% of span
ACT, HIGH, LOW, OFF, SP1/FH1, RP1/

PARA

FL1, SP2/FH2, RP2/FL2

2

22 WIKA operating instructions pressure switch model PSD-3x

Factory setting:

Order-related

0 s

ACTDISM

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6. Commissioning, operation

6.5 Switching functions

Hysteresis function

If the system pressure uctuates around the set point, the hysteresis
keeps the switching status of the outputs stable. With increasing system
pressure, the output switches when reaching the switch point (SP).

■

Contact normally open (HNO): active

■

Contact normally closed (HNC): inactive

With system pressure falling again, the output will not switch back
before the reset point (RP) is reached.

■

Contact normally open (HNO): inactive

■

Contact normally closed (HNC): active

Window function

The window function allows for the control of a dened range.
When the system pressure is between window High (FH) and window
Low (FL), the output switches on.

■

Contact normally open (FNO): active

■

Contact normally closed (FNC): inactive

When the system pressure is outside window High (FH) and window
Low (FL), the output does not switch on.

GB

Fig.: Hysteresis function

■

Contact normally open (FNO): inactive

■

Contact normally closed (FNC): active

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Fig.: Window function

23WIKA operating instructions pressure switch model PSD-3x

6. Commissioning, operation

Delay times (0 ... 50 s)

This makes it possible to lter out unwanted pressure peaks of a short
duration or a high frequency (damping).
The pressure must be present for at least a certain pre-set time for the

GB

output to switch on. The output does not immediately change its status
when it reaches the switching event (SP), but rather only after the
pre-set delay time (DS).

If the switching event is no longer present after the delay time, the
switch output does not change.
The output only switches back when the system pressure has fallen
down to the reset point (PR) and stays at or below the reset point (RP)
for at least the pre-set delay time (DR).

If the switching event is no longer present after the delay time, the
switch output does not change.

Fig.: Delay times

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6. Commissioning, operation

6.6 Description of the IO-Link functionality (optional)

IO-Link is a point-to-point connection for the communication of the PSD-3x with an IO-Link master.

Physical layer

The PSD-3x supports the following features:

IO-Link specication: Version 1.0
SIO mode: Yes
Minimum cycle time: 2.3 ms
Rate: COM2 (38.4 kBaud)
Process data length: 16 bit (Frametype 2.2)

Process data

The PSD-3x has 1 or 2 digital outputs. Both switching outputs are transmitted as process data over the
IO-Link.
In the 'SIO Mode' (Standard I/O Mode), i.e. no IO-Link operation, the switching output 1 will switch on
pin 4 of the M12 connector.
In the IO-Link communication mode, this pin is reserved exclusively for communication. Switching
output 2 is always switched in addition on pin 2 of the M12 connector.

With a Frametype 2.2, the 16-bit process data from the pressure switch are transmitted cyclically. Bit
0 is the state of switching output 1 and Bit 1 is the state of switching output 2. Where 1 and DC 24 V
correspond to the "closed" logic state of the respective output.

The remaining 14 bits contain the analogue value measured by the pressure switch. The start of the
measuring range (MBA) corresponds to a value of 1,000 d and the end of the measuring range (MBE)
corresponds to a value of 9,000 d.

GB

Bit Process value Value range

0 OU1 0 = o, 1 = on
1 OU2 0 = o, 1 = on
2 … 15 Measured value (integer) 1,000 d = MBA

9,000 d = MBE

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25WIKA operating instructions pressure switch model PSD-3x

6. Commissioning, operation

Service data (SPDU service protocol data unit)

Service data is always acyclic and exchanged on the request of the IO-Link Master
With the help of the service data, the following parameter values or instrument status can be read:

GB

IO-Link-specic

Index
(decimal)

16 Vendor name Visible string R WIKA Alexander Wiegand

17 Vendor text Visible string R www.wika.com
19 Product ID Visible string R e.g. 1013093 This SPDU determines the relation-

21 Serial number Visible string R S# Corresponds to serial number on

24 TAG max. 16 Byte

33 Last event Visible string R ­40 Process data In 16 Bit unsigned R - Display of the process data that are

243 Order no Visible string R P# Corresponds to product number on

Manufacturer-specic

Index
(decimal)

65 SP1 or FH1 16 Bit

66 RP1 or FL1 16 Bit

Object name Format Access Factory setting Remarks

SE & Co. KG

ship with the corresponding IODD.

the product label (S#).

R/W - Customer-specic measuring point

number

cyclically transferred.

the product label (P#).

Object

Visible string

Format Access Value range Factory setting Remarks

name

unsigned

unsigned

R/W 1,040 … 9,000 9,000 Switch point/window

R/W 1,000 … 8,960 8,200 Reset point/window Low

High switching output 1

switching output 1

26 WIKA operating instructions pressure switch model PSD-3x

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6. Commissioning, operation

Index
(decimal)

67 OU1 8 Bit

68 SP2 or

69 RP2 or

70 OU2 8 Bit

72 Unit 8 Bit

73 HIGH 16 Bit

74 LOW 16 Bit

75 DS1 16 Bit

Object
name

FH2

FL2

Format Access Value range Factory

Enumeration

16 Bit
unsigned

16 Bit
unsigned

Enumeration

Enumeration

unsigned

unsigned

unsigned

setting

Remarks

R/W 0 = HNO = hysteresis function,

normally open
1 = HNC = hysteresis function,
normally closed
2 = FNO = window function,
normally open
3 = FNC = window function,
normally closed

R/W 1,040 … 9,000 9,000 Switch point/window

R/W 1,000 … 8,960 8,200 Reset point/window Low

R/W 0 = HNO = hysteresis function,

normally open
1 = HNC = hysteresis function,
normally closed
2 = FNO = window function,
normally open
3 = FNC = window function,
normally closed

R/W 0 = bar

1 = Mpa
2 = kPa
3 = psi
4 = kg/cm²

R 0 … 10,000 - Max. value memory

R 0 … 10,000 - Min. value memory

R/W 0 … 50,000 (0 ... 50 s) 0 Switch delay time switch

0 Switching function

switching output 1

high switching output 2

switching output 2

0 Switching function

switching output 2

Order-related Unit change. MBA and

MBE must be read again
after writing.

point 1

GB

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27WIKA operating instructions pressure switch model PSD-3x

6. Commissioning, operation

Index
(decimal)

76 DR1 16 Bit unsigned R/W 0 … 50,000 (0 ... 50 s) 0 Switch delay time reset

GB

77 DS2 16 Bit unsigned R/W 0 … 50,000 (0 ... 50 s) 0 Switch delay time switch

78 DR2 16 Bit unsigned R/W 0 … 50,000 (0 ... 50 s) 0 Switch delay time reset

240 MBA 32 Bit IEEE 754

241 MBE 32 Bit IEEE 754

250 DISR 8 Bit

251 DISM 8 Bit

252 PAS 16 Bit unsigned R/W 0 … 9,999 - Enter password in order to

253 LOCK 8 Bit

Object
name

Format Access Value range Factory

setting

Float

Float

Enumeration

Enumeration

Enumeration

R - 1,000 The pressure value is

R - 9,000 The pressure value is

R/W 0 = Standard

1 = 180° rotated

R/W 0 = Act

1 = HIGH
2 = LOW
3 = SP1/FH1
4 = RP1/FL1
5 = SP2/FH2
6 = RP2/FL2
7 = O

R/W 0 = Unlocked

1 = Locked

0 Turn display indicator by

0 Display value in display

0 General keylock

Remarks

point 1

point 2

point 2

always linearised such that
the MBA equals the value
1000 and the MBE equals
the value 9000.

always linearised such that
the MBA equals the value
1,000 and the MBE equals
the value 9,000.

180°

mode

set the parameters at the
instrument. Password 0 =
no password

28 WIKA operating instructions pressure switch model PSD-3x

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6. Commissioning, operation / 7. Maintenance and cleaning

Index
(decimal)

2 RES 130 Return the set parameter to the factory settings
2 LOCK 163 General keylock On
2 UNLOCK 164 General keylock O
2 RHL 176 Clear the Min- and Max-value memories
2 0SET 177 Zero-point adjustment (3 % of span) see page 18

Object
name

Value Remarks

7. Maintenance and cleaning

7.1 Maintenance

This instrument is maitenance-free.
Repairs must only be carried out by the manufacturer.

7.2 Cleaning

CAUTION!

■

Before cleaning, correctly disconnect the instrument from the pressure supply, switch it
o and disconnect it from the mains.

■

Clean the instrument with a moist cloth.

■

Electrical connections must not come into contact with moisture.

■

Wash or clean the dismounted instrument before returning it in order to protect personnel
and the environment from exposure to residual media.

■

Residual media in dismounted instruments can result in a risk to persons, the
environment and equipment.

■

Take sucient precautionary measures.

■

Do not use any pointed or hard objects for cleaning, as they may damage the diaphragm
of the process connection.

GB

For information on returning the instrument see chapter 9.2 "Return".

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29WIKA operating instructions pressure switch model PSD-3x

8. Faults

8. Faults

GB

In the event of any faults, rst check whether the pressure switch is mounted correctly,
mechanically and electrically.

Error display

Via the instrument's display internal errors of the instrument are output.
The following table shows the error codes and their meaning.

Error Description

ATT1 On changing the switch point, the system automatically reduces the reset point.
ATT2 Zero-point adjustment error, current pressure is outside the limits
ATT3 Password entered for menu access is incorrect
ERR Internal error
OL Overpressure, measuring range exceeded > approx. 5% (display blinks)
UL Underpressure, below measuring range < approx. 5 % (display blinks)

Acknowledgement of an error display by pressing the "Enter" key.

Problem Possible cause Measure

No output signal Cable break Check the continuity
No output signal No/wrong power supply Rectify the power supply
No/wrong output signal Wiring error Observe the pin assignment
Constant output signal upon change

in pressure
Deviating zero point signal Overpressure limit exceeded Observe the permissible overpressure limit
Signal span too small Mechanical overload caused by over-

Signal span too small Power supply too high/low Rectify the power supply

Mechanical overload caused by over­pressure

pressure

Replace instrument; if it fails repeatedly,
contact the manufacturer

Replace instrument; if it fails repeatedly,
contact the manufacturer

30 WIKA operating instructions pressure switch model PSD-3x

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