Pressure switch model PSA-31 Druckschalter Typ PSA-31 Pressostat type PSA-31 Presostato modelo PSA-31
Operating instructions Betriebsanleitung Mode d'emploi
Manual de instrucciones
GB
D
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Pressure switch model PSA-31
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Operating instructions model PSA-31 |
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Betriebsanleitung Typ PSA-31 |
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Mode d'emploi type PSA-31 |
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Manual de instrucciones modelo PSA-31 |
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© 2010WIKA AlexanderWiegand 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!
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WIKA operating instructions pressure switch model PSA-31 |
14018458.01 11/2011 GB/D/F/E
14018458.01 11/2011 GB/D/F/E
Contents
Contents
GB
1. |
General information |
4 |
2. |
Safety |
6 |
3. |
Specifications |
9 |
4. |
Design and function |
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5. |
Transport, packaging and storage |
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6. |
Commissioning, operation |
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7. |
Maintenance and cleaning |
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8. |
Faults |
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9. |
Dismounting, return and disposal |
30 |
Appendix 1: EC Declaration of Conformity for model PSA-31 |
32 |
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Declarations of conformity can be found online at www.wika.com.
WIKA operating instructions pressure switch model PSA-31 |
3 |
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 certified 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 insufficiently qualified skilled personnel or unauthorised modifications to the instrument.
■■The general terms and conditions contained in the sales documentation shall apply.
■■Subject to technical modifications.
■■Further information:
- Internet address: |
www.wika.de / www.wika.com |
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- Relevant data sheet: |
PE 81.85 |
9372/132-8976 |
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- Application consultant: |
Tel.: |
(+49) |
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Fax: |
(+49) |
9372/132-8008976 |
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E-mail: support-tronic@wika.de |
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WIKA operating instructions pressure switch model PSA-31 |
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14018458.01 11/2011 GB/D/F/E
1.General information
14018458.01 11/2011 GB/D/F/E
Explanation of symbols
WARNING!
...indicates a potentially dangerous situation which can result in serious injury or death if not GB 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 efficient and trouble-free operation.
Abbreviations
U+ |
Positive power terminal |
U- |
Negative power terminal |
S+ |
Analogue output |
SP1 |
Switch point 1 |
SP2 |
Switch point 2 |
CCommunication with IO-Link
MBA |
Start of measuring range |
MBE |
End of measuring range |
WIKA operating instructions pressure switch model PSA-31 |
5 |
2.Safety
2.Safety
WARNING!
GB Before installation, commissioning and operation, ensure that the appropriate pressure switch has been selected in terms of measuring range, design and specific 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 "Specifications".
■■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.
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 specifications contained in these operating instructions must be observed.Improper handling or operation of the instrument outside of its technical specifications requires the instrument to be taken out of service immediately and inspected by an authorisedWIKA service engineer.
The manufacturer shall not be liable for claims of any type based on operation contrary to the intended use.
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WIKA operating instructions pressure switch model PSA-31 |
14018458.01 11/2011 GB/D/F/E
2.Safety
14018458.01 11/2011 GB/D/F/E
2.2 Personnel qualification
WARNING!
Risk of injury if qualification is insufficient! GB
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 qualifications 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-specific 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, flammable 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 sufficient precautionary measures.
WIKA operating instructions pressure switch model PSA-31 |
7 |
2.Safety
2.4Labelling / safety marks
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Product label |
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GB |
Power supply |
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Measuring range |
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P# Product No. |
Analogue signal |
Switching output 1 Switching output 2 |
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
CE, Communauté Européenne
Instruments bearing this mark comply with the relevant European directives.
3-A Sanitary Standards, Inc.
This instrument is 3-A marked based on a third party verification for conformance to the 3-A standard 74-03.
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WIKA operating instructions pressure switch model PSA-31 |
14018458.01 11/2011 GB/D/F/E
14018458.01 11/2011 GB/D/F/E
3.Specifications
3.Specifications
3.1 Measuring ranges |
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Relative pressure |
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bar |
...0 |
1 |
0 |
...1.6 |
...0 |
2.5 |
...0 |
4 |
...0 |
6 |
...0 |
10 |
0 |
...16 |
0 |
...25 |
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psi |
0 ... |
15 |
0 ... |
25 |
0 ... |
301) |
0 ... |
50 |
0 ... |
100 |
0 ... |
160 |
0 |
...200 |
0 |
...300 |
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Absolute pressure |
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bar |
0 ... |
1 |
0 ... |
1.6 |
0 ... |
2.5 |
0 ... |
4 |
0 ... |
6 |
0 ... |
10 |
0 ... |
16 |
0 ... |
25 |
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psi |
0 ... |
15 |
0 ... |
25 |
0 ... |
301) |
0 ... |
50 |
0 ... |
100 |
0 ... |
160 |
0 ... |
200 |
0 ... |
300 |
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Vacuum and +/- measuring range |
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bar |
-1 ... |
0 |
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- 1 ...+1.5 |
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-1 ...+3 |
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-1 ...+5 |
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-1 ...+9 |
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-1 ...+15 |
-1 ... |
+24 |
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psi |
-14.5 ...0 |
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- 14.5 ...+30 |
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-14.5 ... |
+50 |
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-14.5 ...+100 |
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-14.5 ...+160 |
-14.5 ... |
+200 |
-14.5 ...+300 |
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The given measuring ranges are also available in kg/cm2 and MPa.
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
100, 200, 500, 1,000 ms (adjustable)
WIKA operating instructions pressure switch model PSA-31 |
9 |
3.Specifications
3.3Output signal
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Switching output 1 |
Switching output 2 |
Analogue signal |
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PNP |
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- |
4 ...20 mA |
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PNP |
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- |
DC 0 ...10V |
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PNP |
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PNP |
4 ...20 mA |
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PNP |
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PNP |
DC 0 ...10V |
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Alternatively also available with an NPN instead of a PNP switching output. |
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With the IO-Link option, switching output 1 is always PNP. |
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Zero offset adjustment |
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maximum 3 % of span |
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Analogue signal |
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Current output load: ≤ 0.5 kΩ |
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Voltage output load: > 10 kΩ |
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Settling time: |
3 ms |
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Switching output |
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Switch point 1 and switch point 2 are individually adjustable. |
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Normally-open and normally-closed function: freely adjustable |
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Window and hysteresis function: |
freely adjustable |
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Switching voltage: Power supply - 1V |
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Switching current: maximum 250 mA |
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maximum 100 mA with IO-Link option |
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Settling time: |
≤ 10 ms |
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WIKA operating instructions pressure switch model PSA-31 |
14018458.01 11/2011 GB/D/F/E
3.Specifications
14018458.01 11/2011 GB/D/F/E
3.4 Voltage supply |
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Power supply |
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DC 15 ...35V |
GB |
Current consumption |
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maximum 100 mA |
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Total current consumption |
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maximum 600 mA including switching current |
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maximum 500 mA including switching current (with IO-Link option) |
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3.5 Accuracy |
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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 (per IEC 61298-2)
Adjustment accuracy of the switch points
≤ ± 0.5 % of span
Display
≤ ± 1.0 % of span ± 1 digit
Long-term drift
≤ ± 0.2 % of span (per IEC 61298-2)
WIKA operating instructions pressure switch model PSA-31 |
11 |
3.Specifications
Temperature coefficients depending on the process connection
Clamp DIN 32676, DN 32
GB Typical temperature coefficient of zero point
■■ 0 |
...20 °C |
0.75 % of span / 10 K |
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20 ...80 °C |
0.45 % of span / 10 K |
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Typical temperature coefficient of span |
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0 |
...80 °C |
0.1 % of span / 10 K |
All other process connections
Typical temperature coefficient of zero point
■■ 0 ...20 °C |
0.7 % of span / 10 K |
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■■ 20 ...80 °C |
0.2 % of span / 10 K |
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Typical temperature coefficient of span |
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■■ 0 ...80 °C |
0.1 % of span / 10 K |
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3.6 Reference conditions |
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Temperature: |
15 ...25 °C |
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Atmospheric pressure: |
950 ...1,050 mbar |
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Humidity: |
45 ...75 % relative |
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Nominal position: |
Process connection lower mount |
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Power supply: |
DC 24V |
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Load: |
see "Output signal" |
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3.7 Operating conditions Temperatures and humidity
Ambient temperature: |
-20 ...+80 °C |
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Storage temperature: |
-20 ...+80 °C |
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Rated temperature range: |
0 ...80 °C |
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Permissible humidity: |
45 ...75 % relative |
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WIKA operating instructions pressure switch model PSA-31 |
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14018458.01 11/2011 GB/D/F/E
3.Specifications
14018458.01 11/2011 GB/D/F/E
Ingress protection |
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IP 65 and IP 67 |
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The stated ingress protection (per IEC 60529) only applies when plugged in using mating connectors that have the appropriate ingress |
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protection. |
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Medium temperature depending on the process connection |
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■■ G1 hygienic |
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-20 ...+125 °C (+150 °C possible for up to 60 minutes) |
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■■ All other process connections |
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-20 ...+100 °C (+135 °C possible for up to 60 minutes) |
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Vibration resistance |
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10 g (IEC 60068-2-27, vibration under resonance) |
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Shock resistance |
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50 g (per IEC 60068-2-6, mechanical shock) |
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3.8 Electrical connections |
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Connections
■■Circular connector M12 x 1, 4-pin
■■Circular connector M12 x 1, 5-pin 1)
1) Only for version with two switching outputs and analogue signal
Electrical safety |
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Overvoltage protection: |
DC 40V |
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Short-circuit resistance: |
S+ / SP1 / SP2 vs.U- |
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Reverse polarity protection: |
U+ vs.U- |
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Insulation voltage: |
DC 500V |
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WIKA operating instructions pressure switch model PSA-31 |
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3.Specifications
3.9Materials
Wetted parts
GB Process connection: Stainless steel 1.4435 / 316L
Non-wetted parts
Case: |
Stainless steel 304 |
Keyboard: |
TPE-E |
Display window: |
PC |
Display head: |
PC+ABS-Blend |
Pressure transmission medium
KN59 Neobee® M-20, FDA conform
3.10 Approvals, directives and certificates
Certificates
3-A (74-03)
This instrument is 3-A marked based on a third party verification for conformance to the 3-A standard 74-03.
CE conformity
EMC directive 2004/108/EC, EN 61326 emission (group 1, class B) and interference immunity (industrial application).
RoHS conformity
Yes
For further specifications seeWIKA data sheet PE 81.85 and the order documentation.
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WIKA operating instructions pressure switch model PSA-31 |
14018458.01 11/2011 GB/D/F/E
4.Design and function / 5.Transport, packaging and storage
4.Design and function
4.1 Description |
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GB |
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By means of a sensor element and by supplying power, the prevailing pressure is converted into a |
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switching signal or an amplified standardised electrical signal via the deformation of a diaphragm.This |
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electrical signal varies in proportion to the pressure and can be evaluated accordingly. |
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4.2 Scope of delivery
Cross-check the scope of delivery with the delivery note.
The version with G1 hygienic process connection includes pre-assembled sealings and a protection cap.
14018458.01 11/2011 GB/D/F/E
5.Transport, packaging and storage
For the protection of the diaphragm, the pressure switch 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.
5.1Transport
Check the instrument for any damage that may have been caused by transport.Additionally check the diaphragm for any optical damage.
Obvious damage must be reported immediately.
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).
WIKA operating instructions pressure switch model PSA-31 |
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5.Transport, packaging and storage / 6.Commissioning, ...
5.3Storage
Permissible conditions at the place of storage:
■■ Storage temperature:-20 ...+80 °C
GB ■■ 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 fluid is indicative of damage.
6.1 Making the mechanical connection
■■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 flats.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.
■■Never loosen sealed filling screws on the measuring instrument.
■■For installation, in accordance with the fitting and flange standards the appropriate fastenings, such as screws, nuts or clamp rings, must be used.
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WIKA operating instructions pressure switch model PSA-31 |
14018458.01 11/2011 GB/D/F/E
6.Commissioning, operation
■■For flange mounting, only use sealings with a sufficiently large inner diameter and centre them; contact with the diaphragm leads to measuring errors.
■■When using soft or PTFE sealings, observe the instructions of the sealing manufacturer, particularly
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with regard to tightening torque and load cycles. |
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GB |
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■■ When using a welding socket, position this so that the hole for leakage detection points downwards. |
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Weld the welding socket flush with the inner wall of the vessel and grind down.The surface rough- |
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ness of the ground surfaces should be better than Ra ≤ 0.8 µm. |
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6.2 Making the electrical connection |
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■■ The instrument must be earthed via the process connection! |
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■■ For cable outlets, make sure that no moisture enters at the cable end. |
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Connection diagrams |
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Circular connector M12 x 1, 4-pin |
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Circular connector M12 x 1, 5-pin |
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Assignment |
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Assignment |
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U+ |
U- |
S+ |
SP1 |
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SP2 |
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U+ |
U- |
S+ |
SP1 |
SP2 |
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3 |
2 |
4 |
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3 |
5 |
4 |
2 |
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14018458.01 11/2011 GB/D/F/E
If a shut-off valve is available, open it slowly after installation in order to avoid pressure surges.
6.3 Zero point adjustment
Check the indicated zero point on the display during commissioning.
Should an offset be displayed as a result of installation, this can be reset in programming mode with the 0SET parameter (see chapter 6.7 "Menu").
WIKA operating instructions pressure switch model PSA-31 |
17 |
6.Commissioning, operation
■■ Carry out zero point adjustment for relative and vacuum pressure measuring ranges in a
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depressurised state. |
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Carry out zero point adjustment of absolute pressure ranges from 0 bar absolute |
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(vacuum).Since appropriate references are required for this, we recommend that this is |
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only carried out by the manufacturer. |
6.4 Operating modes
■■System start
Display is fully activated for 2 seconds.
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
6.5Keys 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.
18
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.
WIKA operating instructions pressure switch model PSA-31
14018458.01 11/2011 GB/D/F/E
6.Commissioning, operation
14018458.01 11/2011 GB/D/F/E
Status switching output 2 (optional)
Status switching output 1
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
Confirmation of the input
GB
WIKA operating instructions pressure switch model PSA-31 |
19 |
6.Commissioning, operation
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6.6 Parameters |
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Parameter |
Description |
GB |
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SP1/SP2 |
Hysteresis function:Switch point switching output (1 or 2) |
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FH1/FH2 |
Window function:Window high switching output (1 or 2) |
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RP1/RP2 |
Hysteresis function:Reset point switching output (1 or 2) |
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FL1/FL2 |
Window function:Window low switch output (1 or 2) |
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EF |
Extended programming functions |
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RES |
Return the set parameter to the factory settings |
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DS1/DS2 |
Switch delay time, which must occur without interruption before any electrical signal change occurs (SP1 or SP2) |
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DR1/DR2 |
Switch delay time, which must occur without interruption before any electrical signal change occurs (RP1 or RP2) |
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OU1 |
Switching function switching output (1 or 2) |
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OU2 |
HNO = hysteresis function, normally open |
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HNC = hysteresis function, normally closed |
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FNO = window function, normally open |
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FNC = window function, normally closed |
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UNIT |
Changing units |
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(If the measuring range is outside the indication range, a unit switching is not possible and the UNIT parameter is not |
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indicated) |
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0SET |
Offset adjustment (3 % of span) |
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DISM |
Display value in display mode |
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ACT = actual pressure value;LOW, HIGH = minimum, maximum temperature value OFF = display off; |
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SP1/FH1 = function switch point 1, RP1/FL1 = function reset point 1, |
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SP2/FH2 = function switch point 2, RP2/FL2 = function reset point 2 |
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DISU |
Display update 1, 2, 5, 10 updates/second |
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DISR |
Rotate display indicator by 180° |
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RHL |
Clear the Minand Max-value memories |
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PAS |
Password input, 0000 = no password |
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Password input digit by digit |
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TAG |
Input of a 16-figure alphanumeric measuring point number |
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WIKA operating instructions pressure switch model PSA-31 |
14018458.01 11/2011 GB/D/F/E
6.Commissioning, operation
14018458.01 11/2011 GB/D/F/E
6.7 Menu (programming and factory setting)
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Display mode |
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Long press on menu key |
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Factory setting: |
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Programming mode |
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GB |
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SP1 / FH1 |
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Value |
(Min:MBA +0.5 % |
Max:MBE) |
Instrument nominal pressure |
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RP1 / FL1 |
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Value |
(Min:MBA |
Max:SP1 -0.5 %) |
Instrument nominal pressure -10 % |
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SP2 / FH2 |
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Value |
(Min:MBA +0.5 % |
Max:MBE) |
Instrument nominal pressure |
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RP2 / FL2 |
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Value |
(Min:MBA |
Max:SP2 -0.5 %) |
Instrument nominal pressure -10 % |
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EF |
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RES |
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Yes / No |
Reset to factory setting |
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Value |
0 ...50 s |
0 s |
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DS1 |
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DR1 |
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Value |
0 ...50 s |
0 s |
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DS2 |
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Value |
0 ...50 s |
0 s |
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DR2 |
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Value |
0 ...50 s |
0 s |
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OU1 |
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PARA |
HNO, HNC, FNO, FNC |
HNO |
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OU2 |
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PARA |
HNO, HNC, FNO, FNC |
HNO |
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UNIT |
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Unit |
BAR, MPA, KPA, PSI, KG/cm2 |
Order-related |
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0SET |
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Yes / No |
Zero Point adjustment 3% of span |
0 s |
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DISM |
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PARA |
ACT, HIGH, LOW, OFF, SP1/FH1, |
ACT |
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RP1/FL1, SP2/FH2, RP2/FL2 |
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DISU |
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Value |
1/2/5/10 update/second |
0 s |
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DISR |
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Yes / No |
Rotate display by 180° |
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RHL |
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Yes / No |
Reset HIGH, LOW |
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PAS |
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Value |
Password |
without |
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TAG |
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Value |
Measuring point number |
without |
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END |
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END |
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Legend: |
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Display mode |
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MBA = Start of measuring range |
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MBE = End of measuring range |
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WIKA operating instructions pressure switch model PSA-31 |
21 |
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6.Commissioning, operation
6.8Switching functions
Hysteresis function
GB If the system pressure fluctuates 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 defined 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.
■■Contact normally open (FNO):inactive
■■Contact normally closed (FNC):active
Fig.:Hysteresis function
Fig.:Window function
22 |
WIKA operating instructions pressure switch model PSA-31 |
14018458.01 11/2011 GB/D/F/E
6.Commissioning, operation
14018458.01 11/2011 GB/D/F/E
Delay times (0 ...50 s)
This makes it possible to filter 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) Fig.:Delay times for at least the pre-set delay time (DR).
WIKA operating instructions pressure switch model PSA-31 |
23 |
6.Commissioning, operation
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6.9 Description of the IO-Link functionality (optional) |
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IO-Link is a point-to-point connection for the communication of the PSA-31 with an IO-Link master. |
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GB |
Physical layer |
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The PSA-31 supports the following features: |
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IO-Link specification: |
Version 1.0 |
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SIO mode: |
Yes |
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Minimum cycle time: |
2.3 ms |
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Rate: |
COM2 (38.4 kBaud) |
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Process data length: |
16 bit (Frametype 2.2) |
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Process data |
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The PSA-31 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 24V 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.
Bit |
Process value |
Value range |
0 |
OU1 |
0 = off, 1 = on |
1 |
OU2 |
0 = off, 1 = on |
2 … 15 |
Measured value (integer) |
1,000 d = MBA |
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9,000 d = MBE |
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24 |
WIKA operating instructions pressure switch model PSA-31 |
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14018458.01 11/2011 GB/D/F/E
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:
IO-Link specific:
Index |
Object name Format |
Access Factory setting |
Remarks |
(decimal) |
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GB
16 |
Vendor name |
Visible string |
R |
WIKA AlexanderWiegand |
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SE & Co.KG |
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17 |
Vendor text |
Visible string |
R |
www.wika.com |
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19 |
Product ID |
Visible string |
R |
e.g.1,013,093 |
This SPDU determines the relation- |
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ship with the corresponding IODD. |
21 |
Serial number |
Visible string |
R |
S# |
Corresponds to serial number on the |
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product label (S#). |
24 |
TAG |
max.16 Byte |
R/W |
- |
Customer-specific measuring point |
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Visible string |
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number |
33 |
Last event |
Visible string |
R |
- |
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40 |
Process data In |
16 Bit unsigned |
R |
- |
Display of the process data that are |
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cyclically transferred. |
243 |
Order no |
Visible string |
R |
P# |
Corresponds to product number on |
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the product label (P#) |
14018458.01 11/2011 GB/D/F/E
Manufacturer-specific: |
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Index |
Object |
Format |
Access |
Value range |
Factory |
Remarks |
(decimal) |
name |
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setting |
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65 |
SP1 or FH1 |
16 Bit |
R/W |
1,040 … 9,000 |
9,000 |
Switch point/window High |
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unsigned |
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switching output 1 |
66 |
RP1 or FL1 |
16 Bit |
R/W |
1,000 … 8,960 |
8,200 |
Reset point/window Low |
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unsigned |
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switching output 1 |
WIKA operating instructions pressure switch model PSA-31 |
25 |
6.Commissioning, operation
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Index |
Object |
Format |
Access |
Value range |
Factory |
Remarks |
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(decimal) |
name |
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setting |
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67 |
OU1 |
8 Bit |
R/W |
0 |
= HNO = hysteresis function, |
0 |
Switching function |
GB |
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Enumeration |
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normally open |
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switching output 1 |
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1 |
= HNC = hysteresis function, |
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normally closed |
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2 |
= FNO = window function, |
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normally open |
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3 |
= FNC = window function, |
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normally closed |
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68 |
SP2 or FH2 |
16 Bit |
R/W |
1,040 … 9,000 |
9,000 |
Switch point/window |
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unsigned |
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High switching output 2 |
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69 |
RP2 or FL2 |
16 Bit |
R/W |
1,000 … 8,960 |
8,200 |
Reset point/window Low |
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unsigned |
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switching output 2 |
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70 |
OU2 |
8 Bit |
R/W |
0 |
= HNO = hysteresis function, |
0 |
Switching function |
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Enumeration |
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normally open |
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switching output 2 |
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1 |
= HNC = hysteresis function, |
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normally closed |
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2 |
= FNO = window function, |
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normally open |
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3 |
= FNC = window function, |
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normally closed |
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72 |
Unit |
8 Bit |
R/W |
0 |
= bar |
Order-related |
Unit change.MBA and |
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Enumeration |
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1 |
= Mpa |
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MBE must be read again |
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2 |
= kPa |
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after writing. |
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3 |
= psi |
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4 |
= kg/cm² |
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73 |
HIGH |
16 Bit |
R |
0 |
… 10,000 |
- |
Max.value memory |
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unsigned |
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74 |
LOW |
16 Bit |
R |
0 |
… 10,000 |
- |
Min.value memory |
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unsigned |
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75 |
DS1 |
16 Bit |
R/W |
0 |
… 50,000 (0 ...50 s) |
0 |
Switch delay time switch |
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unsigned |
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point 1 |
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76 |
DR1 |
16 Bit |
R/W |
0 |
… 50,000 (0 ...50 s) |
0 |
Switch delay time reset |
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unsigned |
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point 1 |
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77 |
DS2 |
16 Bit |
R/W |
0 |
… 50,000 (0 ...50 s) |
0 |
Switch delay time switch |
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unsigned |
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point 2 |
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78 |
DR2 |
16 Bit |
R/W |
0 |
… 50,000 (0 ...50 s) |
0 |
Switch delay time reset |
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unsigned |
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point 2 |
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26 |
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WIKA operating instructions pressure switch model PSA-31 |
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14018458.01 11/2011 GB/D/F/E
6.Commissioning, operation
Index |
Object |
Format |
Access |
Value range |
Factory set-Remarks |
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(decimal) |
name |
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ting |
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240 |
MBA |
32 Bit IEEE |
R |
- |
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1,000 |
The pressure value is |
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GB |
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754 Float |
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always linearised such |
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that the MBA equals the |
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value 1,000 and the MBE |
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equals the value 9,000. |
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241 |
MBE |
32 Bit IEEE |
R |
- |
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9,000 |
The pressure value is |
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754 Float |
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always linearised such |
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that the MBA equals the |
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value 1,000 and the MBE |
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equals the value 9,000. |
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250 |
DISR |
8 Bit |
R/W |
0 |
= Standard |
0 |
Turn display indicator |
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Enumeration |
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1 |
= 180° rotated |
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by 180° |
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251 |
DISM |
8 Bit |
R/W |
0 |
= Act |
0 |
Display value in display |
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Enumeration |
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1 |
= HIGH |
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mode |
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2 |
= LOW |
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3 |
= SP1/FH1 |
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4 |
= RP1/FL1 |
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5 |
= SP2/FH2 |
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6 |
= RP2/FL2 |
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7 |
= Off |
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252 |
PAS |
16 Bit |
R/W |
0 |
… 9,999 |
- |
Enter password in order |
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unsigned |
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to set the parameters at |
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the instrument.Password |
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0 = no password |
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253 |
LOCK |
8 Bit |
R/W |
0 |
= Unlocked |
0 |
General keylock |
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Enumeration |
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1 |
= Locked |
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14018458.01 11/2011 GB/D/F/E
Index |
Object name |
Value |
Remarks |
(decimal) |
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2 |
RES |
130 |
Return the set parameter to the factory settings |
2 |
LOCK |
163 |
General keylock On |
2 |
UNLOCK |
164 |
General keylock Off |
2 |
RHL |
176 |
Clear the Minand Max-value memories |
2 |
0SET |
177 |
Zero-point adjustment (3 % of span) see page 17 |
WIKA operating instructions pressure switch model PSA-31
27
7.Maintenance and cleaning
7.Maintenance and cleaning
7.1 Maintenance
GB This instrument is maintenance-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 off and disconnect it from the voltage supply.
■■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 sufficient precautionary measures.
■■Do not use any pointed or hard objects for cleaning, as they may damage the diaphragm of the process connection.
■■Only ever remove deposits from the diaphragm with a soft brush and suitable solvent.
■■Do not use any cleaner that scours the material.
For information on returning the instrument see chapter 9.2 "Return".
28 |
WIKA operating instructions pressure switch model PSA-31 |
14018458.01 11/2011 GB/D/F/E
14018458.01 11/2011 GB/D/F/E
8.Faults
8.Faults
In the event of any faults, first check whether the pressure switch is mounted correctly, mechanically and |
GB |
electrically. |
Error display
Via the instrument's display internal errors 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 |
Mechanical overload caused by overpressure |
Replace instrument;if it fails repeatedly, contact |
pressure |
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the manufacturer |
Deviating zero point signal |
Overpressure limit exceeded |
Observe the permissible overpressure limit |
Signal span too small |
Mechanical overload caused by overpressure |
Replace instrument;if it fails repeatedly, contact |
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the manufacturer |
Signal span too small |
Power supply too high/low |
Rectify the power supply |
Signal span drops |
Humidity has entered |
Assemble the cable correctly |
Signal span drops/too small |
Diaphragm damaged, e.g.due to impacts, |
Contact manufacturer and replace instrument |
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abrasive/aggressive medium;corrosion at |
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diaphragm/process connection |
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If complaint is unjustified, we will charge you the complaint processing fees.
WIKA operating instructions pressure switch model PSA-31 |
29 |
8.Faults / 9.Dismounting, return and disposal
CAUTION!
If deficiencies cannot be eliminated by means of the measures listed above, shut down the instrument immediately, and ensure that pressure and/or signal are no longer present, and GB secure the instrument from being put back into operation inadvertently.In this case, contact the manufacturer.If a return is needed, follow the instructions given in chapter 9.2 "Return".
9.Dismounting, return and disposal
WARNING!
Residual media in dismounted pressure switches can result in a risk to persons, the environment and equipment.
Take sufficient precautionary measures.
9.1 Dismounting
Only disconnect the pressure switch once the system has been depressurised!
9.2 Returns
WARNING!
Absolutely observe the following when shipping the instrument:
All instruments delivered toWIKA must be free from any kind of hazardous substances (acids, leachate, solutions, etc.).
When returning the instrument, use the original packaging or a suitable transport package.
Enclose the completed return form with the instrument.
The return form can be found under the heading‘Service’ at www.wika.com
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WIKA operating instructions pressure switch model PSA-31 |
14018458.01 11/2011 GB/D/F/E
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