Omega Electronic Pressure switch PSW 31 User's Manual
Contents
1. Cod Meaning Requested code or code programming CLC Clear code Deletion of current code Delay time Setting of filter time constant Buffering time Xx Switching output delay xx 403 06 12 24 50 in ms and xx 0 1 0 2 O 4 in s OFS Offset Request for offset adjustment using W and A buttons SC H Short circuit high Short circuit monitoring activated U LO Voltage low Voltage monitoring activated OFF Off Short circuit or voltage monitoring deactivated Std Standard mode Standard mode activated HYS Hysteresis mode Hysteresis mode activated FEn Window mode Window mode activated UC Voltage calibration Voltage output selected Current calibration Current output selected WARRANTY DISCLAIMER OMEGA ENGINEERING INC warrants this unit to be free of defects in materials and workmanship for a period of 13 months from date of purchase OMEGA Warranty adds an additional one 1 month grace period to the normal one 1 year product warranty to cover handling and shipping time This ensures that OMEGAS customers receive maximum coverage on each product If the unit malfunctions it must be returned to the factory for evaluation OMEGA s Customer Service Department will issue an Authorized Return AR number immediately upon phone or written request Upon examination by OMEGA if the unit is found to be defective it will be repaired or replaced at no charge OMEGA s WARRANTY does not apply to defects resultin2. F 10 to 60 C Media 14 to 175 F 10 to 80 C Temperature Sensitivity gi Zero Point Set Point Shifts 0 4 of FS 10 C _ 188 47 _ 11880 Set Point Pressure Set Point Shifts 0 3 of FS 10 C Electronics Pressure Sensor Microprocessor Evaluation Circuitry and Solid state Output Driver Switching Reset Point Adjustable between 0 100 of FS Linearity lt 0 5 of Final Value 1 digit Electrical Connector DIN Style Plug with Removable Cable Plug Adapter gt gt o 19 gt MATERIALS OF CONSTRUCTION Housing Die Cast Zinc 05 1 2 1 18 30 All dimensions in inches mm ELECTRONIC PRESSURE SWITCH FOR PNEUMATIC APPLICATIONS ELECTRICAL PARAMETERS Electrical connection DIN 43650 Table A Power supply polarity safe 18 to 32V DC Permissible residual ripple 10 within 18 to 32V Current consumption lt 50 mA plus load current a PT lt Micro 3 Uout Imax 1A P gt Controller EPROM SP RP 4 gt Load DIN 43650 2 0V ch SWITCHING OUTPUT Switching mode Open collector PNP switched to supply suited for inductive load Output voltage Supply voltage minus 1 5V approx Contact rating Imax LA short circuit proof Switching time lt 5ms Service life 100 million switching cycles Switching logic Signal on with rising pressure i
3. Switching Characteristic Graphs Signal on with rising pressure Setting SP gt RP Explanation When the switching point SP is Signal on with falling pressure Setting SP lt RP 6 RP SP Signal off with rising pressure Setting RP gt SP Signal off with falling pressure Setting RP lt SP SP Switching point t xxRP Reset point adjusted HIGHER than the reset point RP then the switching output will be normally off When the switching point SP is adjusted LOWER than the reset point RP then the switching output will be normally on Position of operating elements Switching point button __ Reset point button ___ Pressure display ___ Switching function graph _ Switching output LED Raise switching or reset point button Lower switching or reset point button ERROR MESSAGES Display of hardware errors or malfunctions Display Meaning Cause Remedy O Er Output error Error at switching output Circuit breaker defective feedback loop to processor open circuit Repair necessary E Er E2PROM error E2PROM module defective or connection to processor faulty Repair necessary l Er Initialization error Checksum of initialization data incorrect Remedy Call up any SETUP function and acknowledge the setting with SP This error message is caused b
4. time a transition is made through the point Switching pressure Reset pressure When both points are correctly set the hysteresis graph will also be correct You can change between SP and RP as often as you wish until the settings are correct c Setting a buffering time In order to prevent brief pressure spikes or surges from causing undesired switching a buffering time can be entered The effect of this is that pressure changes are evaluated only if the pressure signal in question is present for longer than the buffering time In order to set a buffering time press the button SP before the power supply is switched on Release this button again after the power supply has been switched on The display will then show the buffering time in milliseconds e g 03 or seconds The cursor buttons A can be used to set the buffering time to 03 06 12 24 or 50 ms or 0 1 0 2 or 0 4 seconds When this has been done press SP to store the setting d Setting the pressure switch to ambient pressure 0 Since ambient pressure varies according to altitude the user may re calibrate the zero point to match local conditions Press the button RP before the power supply is switched on Release this button again after the power supply has been switched on and the display test has run The display will then show OFS The cursor buttons V A can be used to set the pressure display to 0 When this has been d
5. 9 120 Daimlerstrasse 26 D 75392 Deckenpfronn Germany Tel 49 0 7056 3017 FAX 49 0 7056 8540 Toll Free in Germany 0800 TC OMEGA e mail germany omega com One Omega Drive River Bend Technology Centre Northbank Irlam Manchester M44 5EX United Kingdom Tel 44 0 161 777 6611 FAX 44 0 161 777 6622 Toll Free in the United Kingdom 0800 488 488 e mail info omega co uk It is the policy of OMEGA to comply with all worldwide safety and EMC EMI regulations that apply OMEGA is constantly pursuing certification of its products to the European New Approach Directives OMEGA will add the CE mark to every appropriate device upon certification The information contained in this document is believed to be correct but OMEGA Engineering Inc accepts no liability for any errors it contains and reserves the right to alter specifications without notice WARNING These products are not designed for use in and should not be used for patient connected applications PSW231 Senes APPLICATION Ideal for Control of Filtered Compressed Air Lubricated or Non Lubricated FEATURES m Real Time LED Status Display of Pressure m Adjustable Hysteresis m Off Line Calibration m Fast Accurate Response m Extensive Service Life SPECIFICATIONS Ports Mounting Plate 1 4 NPT Adjustment Range 14 to 350 PSI 1 to 25 bar 43 Maximum Pressure See Part Number Identification Table 11 Temperature Rating Ambient 14 to 140
6. User s Guide omega com CE OMEGA www omega com e mail info omega com PSW31 SERIES ELECTRONIC PRESSURE SWITCH FOR PNEUMATIC APPLICATIONS USA ISO 9001 Certified Canada USA and Canada Mexico Benelux Czech Republic France Germany Austria United Kingdom ISO 9002 Certified omega com S OMEGR Servicing North America One Omega Drive P O Box 4047 Stamford CT 06907 0047 TEL 203 359 1660 e mail info omega com FAX 203 359 7700 976 Bergar Laval Quebec H7L5A1 TEL 514 856 6928 e mail info omega ca FAX 514 856 6886 For immediate technical or application assistance Sales Service 1 800 826 6342 1 800 TC OMEGA Customer Service 1 800 622 2378 1 800 622 BEST Engineering Service 1 800 872 9436 1 800 USA WHEN TELEX 996404 EASYLINK 62968934 CABLE OMEGA 001 800 826 6342 En Espanol 001 203 359 7803 FAX 001 203 359 7807 e mail espanol omega com Info omega com mx Servicing Europe Postbus 8034 1180 LA Amstelveen The Netherlands TEL 31 0 20 6418405 FAX 31 0 20 6434643 Toll Free in Benelux 0800 0993344 e mail nl omega com Rud arm dy 1868 733 01 Karvin TEL 420 0 69 6311899 Toll Free in Czech Rep 0800 1 66342 FAX 420 0 69 6311114 e mail czech omega com 9 rue Denis Papin 78190 Trappes Tel 33 0 130 621 400 Toll Free in France 0800 4 06342 e mail france omega com FAX 33 0 130 69
7. created for this purpose The pressure switch will then indicate cases in which the actual pressure lies above or below this area In order to set a switching window the two buttons SP and W must be pressed simultaneously before the power supply is switched on Release these buttons again after the power supply has been switched on and the display test has run The display will then show the operating mode The cursor buttons A can now be used to change the operating mode until FEn standing for Window in the display When this has been done press SP to store the setting The button SP can be used to display the switching point setting which can be modified by means of the cursor buttons V A The distance between the switching point and reset point is the switching window If the switching point is lower than the reset point a signal will be output as long as the pressure lies within the preset window case 1 rising pressure If the switching point is higher than the reset point a signal will be output as long as the pressure lies outside the preset window case 2 rising pressure In the case of falling pressure the signal is inverted Case 1 On Pressure within window Off Pressure within window RP lt SP 0 Std Standard mode switching and reset points adjustable HYS Hysteresis mode switching point and hysteresis adjustable FEn Window mode switching window adjustable
8. e shall not exceed the purchase price of the component upon which liability is based In no event shall OMEGA be liable for consequential inci dental or special damages CONDITIONS Equipment sold by OMEGA is not intended to be used nor shall it be used 1 as a Basic Component under 10 CFR 21 NRC used in or with any nuclear installation or activity or 2 in medical appli cations or used on humans Should any Product s be used in or with any nuclear installation or activity medical application used on humans or misused in any way OMEGA assumes no responsibility as set forth in our basic WARRANTY DISCLAIMER language and additionally purchaser will indemnify OMEGA and hold OMEGA harmless from any liability or damage whatsoever arising out of the use of the Product s in such a manner RETURN REQUESTS INQUIRIES Direct all warranty and repair requests inquiries to the OMEGA Customer Service Department BEFORE RETURN ING ANY PRODUCT S TO OMEGA PURCHASER MUST OBTAIN AN AUTHORIZED RETURN AR NUMBER FROM OMEGAS CUSTOMER SERVICE DEPARTMENT IN ORDER TO AVOID PROCESSING DELAYS The assigned AR number should then be marked on the outside of the return package and on any correspondence The purchaser is responsible for shipping charges freight insurance and proper packaging to prevent breakage in transit FOR WARRANTY RETURNS FOR NON WARRANTY REPAIRS consult please have the following information available OMEGA for current re
9. f SP gt RP Signal on with falling pressure if SP lt RP SP Switching point RP Reset point PART NUMBER IDENTIFICATION SWITCHING STEP PART PRESSURE MAXIMUM SIZE OF NUM BER RANGE PSI PRESSURE DISP LAY PSW31C 0 145 440 06 07 PSW31D 0 350 Pressure display in PSI ADJUSTING THE SWITCHING Points SP AND RESET Points RP a Adjusting the switching point Case 1 or Case 2 Q Q Press and hold the SP button The display will show the previous switching pressure setting and the dotted bar will flash while the button is pressed down case 1 You can now use the cursor keys to adjust the switching point upwards or downwards If a cursor key is held down the values will change faster When the cursor key is released again the switch on pressure setting will cease to change This setting is stored and activated when the SP button is released after which the display will show the current pressure value and the bar will quit flashing b Adjusting the reset point Case 3 or Case 4 Q Q Press and hold the RP button The display will show the previous reset pressure setting and the dotted bar will flash while the button is pressed down You can now use the cursor keys to adjust the reset point in the same manner as described above During both adjustment operations it may occur that the hysteresis graph changes from one state to another at the
10. g from any action of the purchaser including but not limited to mishandling improper interfacing operation outside of design limits improper repair or unauthorized modification This WAR RANTY is VOID if the unit shows evidence of having been tampered with or shows evidence of having been damaged as a result of excessive corrosion or current heat moisture or vibration improper specification mis application misuse or other operating conditions outside of OMEGAS control Components which wear are not warranted including but not limited to contact points fuses and triacs OMEGA is pleased to offer suggestions on the use of its various products However OMEGA neither assumes responsibility for any omissions or errors nor assumes liability for any damages that result from the use of its products in accordance with information provided by OMEGA either verbal or written OMEGA warrants only that the parts manufactured by it will be as specified and free of defects OMEGA MAKES NO OTHER WARRANTIES OR REPRESENTATIONS OF ANY KIND WHATSO EVER EXPRESS OR IMPLIED EXCEPT THAT OF TITLE AND ALL IMPLIED WARRANTIES INCLUDING ANY WARRANTY OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE HERE BY DISCLAIMED LIMITATION OF LIABILITY The remedies of purchaser set forth herein are exclusive and the total liability of OMEGA with respect to this order whether based on contract warranty neg ligence indemnification strict liability or otherwis
11. one press SP to store the setting e Hysteresis mode If itis desired to operate with a fixed hysteresis value instead of the reset point this value can be selected as desired In order to set a hysteresis value the two buttons SP and W must be pressed simultaneously before the power supply is switched on Release these buttons again after the power supply has been switched on and the display test has run The display will then show the operating mode The cursor buttons A can now be used to change the operating mode until HYS appears in the display When this has been done press SP to store the setting The SP button can be used to display the switching point setting which can be modified by means of the cursor buttons A Y The button RP can be used to display the hysteresis setting which can also be modified by means of the cursor buttons A Y Negative hysteresis means Signal on with rising pressure case 1 Positive hysteresis means Signal on with falling pressure case 2 If the switching point is modified this will automatically also result in a change in the reset point by a value equal to the hysteresis setting Case 1 Negative hysteresis _ _ Switching point Case 2 Positive hysteresis Switching point f Window mode If itis desired to monitor whether the pressure lies within a certain range a switching window can be
12. pair charges Have the following BEFORE contacting OMEGA information available BEFORE contacting OMEGA Purchase Order number under which the 1 Purchase Order number to cover the COST product was PURCHASED of the repair Model and serial number of the product 2 Model and serial number of the product and under warranty and 3 Repair instructions and or specific problems relative Repair instructions and or specific problems to the product relative to the product OMEGA s policy is to make running changes not model changes whenever an improvement is possible This affords our customers the latest in technology and engineering OMEGA is a registered trademark of OMEGA ENGINEERING INC Copyright 1999 OMEGA ENGINEERING INC All rights reserved This document may not be copied photocopied reproduced translated or reduced to any electronic medium or machine readable form in whole or in part without the prior written consent of OMEGA ENGINEERING INC Where Do Find Everything Need for Process Measurement and Control OMEGA Of Course TEMPERATURE T Thermocouple RTD amp Thermistor Probes Connectors Panels amp Assemblies W Wire Thermocouple RTD amp Thermistor 4 Calibrators amp Ice Point References M Recorders Controllers amp Process Monitors W4 Infrared Pyrometers PRESSURE STRAIN AND FORCE M Transducers amp Strain Gages M Load Cells amp Pressure Gages M Displacement Transducer
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14. y a data error All setup values should therefore be checked and corrected if necessary C Er Calibration error Checksum of calibration data incorrect Recalibration necessary SC L Short circuit low Short circuit between output and ground Check wiring Power supply may be too weak for connected load leading to collapse of voltage particularly with loads with a high switch on current such as incandescent lamps or capacitances UFL Underflow The applied pressure is below the measuring range OFL Overflow Increase pressure until it is within the measuring range The applied pressure is above the measuring range Decrease pressure until it is within the measuring range Display of hardware errors 0 Display Meaning r malfunctions can be switched off Cause Remedy SC H Short circuit high Short circuit between output and power supply Check wiring If the switching line from the load e g electrical control device PLC or similar is being held at an open circuit potential of gt 3V or if several pressure switches are being operated in parallel this function should be switched off Disconnection W during display test then adjust with W or A U Lo Voltage low Power supply voltage too low lt 17V Check power supply Load may be too large Disconnection A during display test then adjust with W or A Messages generated by calling SETUP functions
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