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1. To avoid release of such substances into the environment and to reduce the use of natural resources we encourage you to recycle this product in an appropriate system that will ensure that most of the materials are reused or recycled appropriately to Directives 2002 96 EC and 2006 66 EC on waste electrical and electronic equipment WEEE and batteries For information about recycling options check the Support Service section of the Tektronix Web X This symbol indicates that this product complies with the applicable European Union requirements according site www tektronix com Restriction of Hazardous Substances This product is classifed as Monitoring and Control equipment and is outside the scope of the 2002 95 EC RoHS Directive PWS2185 PWS2323 PWS2326 and PWS2721 User Manual IX Preface Preface Key Features The PWS2000 Series offer m Single output DC power m 3 year warranty m Linear regulation m 0 05 Basic voltage accuracy m 0 2 Basic current accuracy m Less than 3 mV ripple and noise m 20 user defned setup memories Model Description PWS2185 DC power supply 18 V 5 A 1 channel PWS 2323 DC power supply 32 V 3 A 1 channel PWS2326 DC power supply 32 V 6 A 1 channel PWS2721 DC power supply 72 V 1 5 A 1 channel X PWS2185 PWS 2323 PWS2326 and PWS2721 User Manual Getting Started Getting Started Standard Accessories Tektronix part Accessory number PWS2185 PWS2323 PWS2326 an2. instrument complies EMC Compliance EC Declaration of Conformity EMC Meets intent of Directive 2004 108 EC for Electromagnetic Compatibility Compliance was demonstrated to the following speciftations as listed in the Offrial J ournal of the European Communities EN 61326 1 2006 EMC requirements for electrical equipment for measurement control and laboratory use 123 CISPR 11 2003 Radiated and conducted emissions Group 1 Class A IEC 61000 4 2 2001 Electrostatic discharge immunity IEC 61000 4 3 2002 RF electromagnetic feld immunity IEC 61000 4 4 2004 Electrical fast transient burst immunity IEC 61000 4 5 2001 Power line surge immunity IEC 61000 4 6 2003 Conducted RF immunity IEC 61000 4 11 2004 Voltage dips and interruptions immunity 4 EN 61000 3 2 2006 AC power line harmonic emissions EN 61000 3 3 1995 Voltage changes flictuations and flcker European contact Tektronix UK Ltd Western Peninsula Western Road Bracknell RG12 1RF United Kingdom This product is intended for use in nonresidential areas only Use in residential areas may cause electromagnetic interference Emissions which exceed the levels required by this standard may occur when this equipment is connected to a test object For compliance with the EMC standards listed here high quality shielded interface cables should be used Output voltage current limit and output state upon restoration of AC input power after a power interruption are d
3. than one load then every pair of load wires must be capable of safely carrying the full rated current of the power supply 8 9 Push the output On Off button to enable the output The CC message should be lit Push I set and use the numeric keys and Enter button to set the current value to 0 A Check if the displayed current value is approximately 0 A PWS2185 PWS2323 PWS 2326 and PWS2721 User Manual 5 Getting Started 10 Push I set and use the numeric keys and Enter button to set the current value to the maximum allowable for your current supply Check if the displayed current value is approximately the same value as the maximum allowable 11 Turn off the power supply and remove the short wire from the and output terminals Cleaning Inspect the power supply as often as operating conditions require To clean the exterior surface perform the following steps 1 Remove loose dust on the outside of the power supply with a lint free cloth Use care to avoid scratching the display 2 Use a soft cloth dampened with water to clean the power supply Use an aqueous solution of 75 isopropyl alcohol for more efftient cleaning N CAUTION To avoid damage to the surface of the power supply do not use any abrasive or chemical cleaning agents CAUTION Avoid getting moisture inside the unit during external cleaning Use only enough cleaning solution to dampen the cloth or swab 6 PWS2185 PWS2323 PWS2326 and PWS
4. 10V 220V selector switch to 220 V Brazil Option A12 The factory sets the 110V 220V selector switch to 220 V PWS 2185 PWS2323 PWS2326 and PWS2721 User Manual 1 Getting Started Specifications For more speciftations refer to the PWS2185 PWS2323 PWS2326 and PWS2721 Technical Reference Table 2 Electrical ratings for the power connection Line Selector Model Switch Setting Frequency Fuse Rating Max Power PWS2185 110 V 220 V 50 60 Hz For 110 V 5 A TH 250 V 350 VA For 220 V 2 5 A TH 250 V PWS 2323 110 V 220 V 50 60 Hz For 110 V 5 A TH 250 V 350 VA For 220 V 2 5 A TH 250 V PWS2326 110 V 220 V 50 60 Hz For 110 V 6 3 A TH 250 V 675 VA For 220 V 3 15 A TH 250 V PWS2721 110 V 220 V 50 60 Hz For 110 V 5 A TH 250 V 350 VA For 220 V 2 5 A TH 250 V Table 3 Environmental performance Parameter PWS2185 PWS2323 PWS2326 PWS2721 Temperature Operating 0 C to 40 C Humidity Operating 5 to 95 relative humidity RH at up to 40 C non condensing Altitude Operating 100 capability up to 2 000 meters Pollution Degree 2 For indoor use only Nominal Voltage Ratings There are two ranges for all models selectable by the line voltage selector switch Check the voltage select switch on the bottom before turning on 110 V setting 110 115 120 VAC 220 V setting 220 230 240 VAC Fluctuations must not exceed 10 of the nominal rated voltage Float Volt
5. 2721 User Manual Operating Basics Operating Basics Front Panel at a Glance Controls and display elements are shown in the following illustrations and tables EA 2751 005 Display containing information about the settings or output for voltage left and current right Up down right and left arrow keys A and W and Enter button Output connectors Save and Recall function buttons Number keys 0 to 9 and Esc for direct numeric entry V Set I Set Menu and Output On Off function buttons PN OD eR Oe a Power button Function button descriptions Button Description Sets the voltage limit Sets the current limit Saves the present settings to a specifed setup memory location 1 to 20 Select the memory location with the multipurpose knob the up or down arrow keys or the numeric keypad The power supply Saves the settings after you push Enter PWS2185 PWS2323 PWS2326 and PWS2721 User Manual 7 Operating Basics Function button descriptions cont Button Description aaa Recalls a saved setting from a specifed setup memory location 1 to 20 Select the memory location Recall with the multipurpose knob the up or down arrow keys or the numeric keypad The power supply recalls the settings after you push Enter Use to access the following power supply settings Reset All Max Volt Key Lock Out Recall Save Last Key Beep and Sys Info Push Enter to select the d
6. ANTY TEKTRONIX AND ITS VENDORS WILL NOT BE LIABLE FOR ANY INDIRECT SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGES IRRESPECTIVE OF WHETHER TEKTRONIX OR THE VENDOR HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES W16 15AUG04 Table of Contents Table of Contents General Sate SUMMAN isa A da AA as jii C mplance TOMAN i V EMCC OMPI coord a V Safety Complainte ceci Dd a ie a a a a ae ne vii Environmental onsidera lohs evocan a ia A E E Mua ENAN ERE N ix PlCTACC iri iicrechii ds maddened E E E E T E E E T X ROY F OES i isin ee NE EEE TOENE CERE E EE T EEE EEEE EE AE EEEN EEEE X Getin s tanted ra E E I E E O E A E EE A decaih 1 Standard ACCeSSONES iia a a A AA Ad 1 O ptions and O ptonal AcceSSONeS sonir vw cacsvevan sen a ta Dd i 1 SPECIE A MONS aaa ie a 2 Operating Requirements EO ODE EOE EE En oor ine 2 metalnog Me Syers enseris r Deco clues at tia ltd 3 CLEANING doi A AAA A A A Scales AA A 6 Operaling BASICS vivida dad A dica 7 Front Panelata da a 1 RearPanelata Clin ii eos 9 Fon panel Opera A Ai 10 Index PWS2185 PWS2323 PWS2326 and PWS2721 User Manual Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 TestEquipmentDepot com Table of Contents i PWS2185 PWS2323 PWS 2326 and PWS2721 User Manual General Safety Summary General Safety Summary Review the following safety precautions to avoid injury and prevent damage to this product or any products connected to it To avoid po
7. Tektronix shipping charges prepaid and with a copy of customer proof of purchase Tektronix shall pay for the return of the product to Customer if the shipment is to a location within the country in which the Tektronix service center is located Customer shall be responsible for paying all shipping charges duties taxes and any other charges for products returned to any other locations This warranty shall not apply to any defect failure or damage caused by improper use or improper or inadequate maintenance and care Tektronix shall not be obligated to furnish service under this warranty a to repair damage resulting from attempts by personnel other than Tektronix representatives to install repair or service the product b to repair damage resulting from improper use or connection to incompatible equipment c to repair any damage or malfunction caused by the use of non Tektronix supplies or d to service a product that has been modifed or integrated with other products when the effect of such modiftation or integration increases the time or difftulty of servicing the product THIS WARRANTY IS GIVEN BY TEKTRONIX WITH RESPECT TO THE PRODUCT IN LIEU OF ANY OTHER WARRANTIES EXPRESS OR IMPLIED TEKTRONIX AND ITS VENDORS DISCLAIM ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE TEKTRONIX RESPONSIBILITY TO REPAIR OR REPLACE DEFECTIVE PRODUCTS IS THE SOLE AND EXCLUSIVE REMEDY PROVIDED TO THE CUSTOMER FOR BREACH OF THIS WARR
8. Test Equipment 99 Washington Street Depot Melrose MA 02176 Phone 781 665 1400 1 800 517 8431 Toll Free 1 800 517 8431 PWS2185 PWS2323 PWS2326 and PWS2721 Linear DC Power Supplies User Manual OO OOOO AN Tektronix 071 2751 00 Y Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 TestEquipmentDepot com PWS2185 PWS2323 PWS2326 and PWS2721 Linear DC Power Supplies User Manual www tektronix com Tektronix 071 2751 00 Y Warranty Tektronix warrants that the product will be free from defects in materials and workmanship for a period of three 3 years from the date of original purchase from an authorized Tektronix distributor Ifthe product proves defective during this warranty period Tektronix at its option either will repair the defective product without charge for parts and labor or will provide a replacement in exchange for the defective product Batteries are excluded from this warranty Parts modules and replacement products used by Tektronix for warranty work may be new or reconditioned to like new performance All replaced parts modules and products become the property of Tektronix In order to obtain service under this warranty Customer must notify Tektronix of the defect before the expiration of the warranty period and make suitable arrangements for the performance of service Customer shall be responsible for packaging and shipping the defective product to the service center designated by
9. WS2326 and PWS2721 User Manual vij Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 TestEquipmentDepot com Compliance Information Pollution Degree Pollution Degree 2 as defined in IEC 61010 1 Note Rated for indoor use only Installation Overvoltage Category Descriptions Terminals on this product may have different installation overvoltage category designations The installation categories are Measurement Category IV For measurements performed at the source of low voltage installation m Measurement Category Ill For measurements performed in the building installation E Measurement Category Il For measurements performed on circuits directly connected to the low voltage installation m Measurement Category For measurements performed on circuits not directly connected to MAINS Overvoltage Category Overvoltage Category Il as defined in IEC 61010 1 vil PWS2185 PWS2323 PWS2326 and PWS2721 User Manual Compliance Information Environmental Considerations This section provides information about the environmental impact of the product Product End of Life Handling Observe the following guidelines when recycling an instrument or component Equipment recycling Production of this equipment required the extraction and use of natural resources The equipment may contain substances that could be harmful to the environment or human health if improperly handled at the product s end of life
10. age Rating Float voltage rating up to 100 V DC peak AC between earth ground and any output terminal Operating Requirements 1 Place the instrument on a bench or similar surface 2 Before operating ensure that the ambient temperature is between 0 C and 40 C 32 F to 104 F WARNING To ensure proper cooling keep the front sides and rear of the instrument clear of obstructions Do not operate the instrument on a table without the handle in the down and locked position This allows air flow to the bottom of the instrument 2 PWS2185 PWS 2323 PWS2326 and PWS2721 User Manual Getting Started WARNING Observe all safety precautions listed in this manual before using this product and any associated instruments Although some instruments and accessories would be used with non hazardous voltages there are situations where hazardous conditions may be present This product is intended for use by qualified personnel who recognize shock hazards and are familiar with the safety precautions required to avoid possible injury Read and follow all installation operation and maintenance information carefully before using the product Refer to this manual for complete product specifications Before performing any maintenance disconnect the line cord and all test cables Operators of this instrument must be protected from electric shock at all times The responsible body must ensure that operators are prevented access and or insula
11. d PWS2721 Power Supply User Manual available in 10 071 2751 XX to languages Contains safety and installation information 071 2760 XX Power Cord based upon the international power option See page 1 Options and Optional Accessories Certiftate of calibration PWS2000 Linear Power Supplies Documentation Browser CD 063 4282 XX Options and Optional Accessories For the current list of accessories upgrades and options available for your PWS2000 Series Power Supply visit the Tektronix Web site www tektronix com Table 1 Standard accessories Accessory Tektronix part number PWS2185 PWS2323 PWS2326 and PWS2721 Power Supply Technical Reference in English 077 0482 XX Contains detailed information about the instrument including speciftations and how to verify performance Available for download from www tektronix com manuals Power Cord One of the following North America Option AQ The factory sets the 110V 220V selector switch to 110 V Universal Euro Option A1 The factory sets the 110V 220V selector switch to 220 V United Kingdom Option A2 The factory sets the 110V 220V selector switch to 220 V Australia Option A3 The factory sets the 110V 220V selector switch to 220 V Switzerland Option A5 The factory sets the 110V 220V selector switch to 220 V China Option A10 The factory sets the 110V 220V selector switch to 220 V India Option A11 The factory sets the 1
12. et this parameter to Off then the power supply returns to the default settings at power on If you select On the power supply will restore the state to that which was in use before the power was last turned off To enable or disable this control 1 Push Menu Use the down arrow key to select Save Last Push Enter Use the arrow keys to select On or Off Push Enter eo nr fF SP FN Push Esc to exit the menu system NOTE The default selection is set to On PWS2185 PWS2323 PWS2326 and PWS2721 User Manual 13 Operating Basics 14 Set the Key Beep gt KEY BEEP This control can switch on or off the sound that occurs when you push any button or press any key To enable or disable this feature 1 Push Menu Use the down arrow key to select Key Beep Push Enter Use the arrow keys to select On or Off Push Enter D o e O Push Esc to exit the menu system NOTE The default selection is set to Off PWS2185 PWS2323 PWS2326 and PWS2721 User Manual Index Symbols and Numbers 110 V 220 V selector switch 10 A Accessories optional 1 standard 1 B Button I set 7 Menu 8 On off 8 Recall 8 Save 7 V set 7 C Checkout current 5 no power 4 voltage 5 Connectors 7 Crossover 11 Current display 7 Current limit adjustment 12 D Display 7 messages 8 F Features x Front panel 10 Front panel indicators and buttons 7 Function button l set 7 Me
13. etermined by user preference settings Under the factory default settings output voltage and current limit values will be restored to the previous settings but output state will be set to off Change the user preferences if restoration of previous output state upon restoration of AC input power is desired PWS2185 PWS2323 PWS2326 and PWS2721 User Manual V vi Compliance Information Australia New Zealand Declaration of Conformity EMC Complies with the EMC provision of the Radiocommunications Act per the following standard in accordance with ACMA m CISPR 11 2003 Radiated and Conducted Emissions Group 1 Class A in accordance with EN 61326 1 2006 Australia New Zealand contact Baker amp McKenzie Level 27 AMP Centre 50 Bridge Street Sydney NSW 2000 Australia PWS 2185 PWS2323 PWS2326 and PWS2721 User Manual Compliance Information Safety Compliance EC Declaration of Conformity Low Voltage Compliance was demonstrated to the following speciftation as listed in the Offtial J ournal of the European Communities Low Voltage Directive 2006 95 EC m EN 61010 1 2001 Safety requirements for electrical equipment for measurement control and laboratory use U S Nationally Recognized Testing Laboratory Listing m UL 61010 1 2004 2nd Edition Standard for electrical measuring and test equipment Canadian Certification mM CAN CSA C22 2 No 61010 1 2004 Safety requirements for electrical equipment for measuremen
14. isplayed menu item Turns on or off the output channel of the power supply The regulation mode constant voltage CV or constant current CC is shown on the display when the output is turned on Backs out of the selected function If the instrument s focus is in a menu pushing Esc will back up one menu level Menu button descriptions Primary Menu Secondary Menu Description Reset All Returns the instrument to the factory default setup values Yes Select to return the instrument to the factory default setup values and then press the Enter button No Select if you do not want to return the instrument to the factory default setup values and then press the Enter button Max Volt Sets the maximum output voltage value to which you can set the instrument Key Lock When activated this feature locks the front panel controls and prompts for a password to enable settings changes This feature does not lock the power switch or the output on off switch OutR ecall On Def Off Sets the power output On Off state after power up On restores the state to that which was in use before the power was last turned off Off disables this function and configures the output channel to power up on the off state Save Last On Def Off Recalls the operating parameters of the power supply after power up It does this by saving the last setting of operating parameters before you tur
15. keys or the arrow keys to change the voltage value The value must be less than the maximum voltage output PWS 2185 PWS 2323 PWS2326 and PWS2721 User Manual Operating Basics 8 Push Enter 9 Push Esc to exit the menu system NOTE The default maximum voltage is the full voltage range of the particular power supply being used Recall the Power Supply ON OFF Output State at Power On gt OUT RECALL This parameter determines the initial On or Off output state after the power supply is powered on If you select On the power supply will restore the state of the output to that which was in use before the power was last turned off If the output was turned On when the power supply is turned off or loses power then the output will return to the On state when the power supply is turned back on or power is restored Off will disable this function and the output channel will always be set to Off after the power supply is powered on To enable or disable this control 1 Push the Menu Use the down arrow key to select OUT RECALL Push Enter Use the up arrow key to select On or Off Push Enter eo o fF SF FN Push Esc to exit the menu system NOTE The default selection is set to Off Recall the Power Supply Operating Parameters at Power On gt SAVE LAST This parameter determines whether the power supply saves its most recent settings such as voltage and current and restores these settings at power on If you s
16. mode It displays the actual voltage and current output value To see the voltage or current limits press the Enter button Pressing the V Set or l Set button puts the meter into Set mode Both voltage and current limit settings will show but either the voltage or current setting will fash to indicate which parameter can be adjusted The settings will continue to show until the power supply returns to Meter mode Press the up and down arrow keys to adjust the selected limit The power supply automatically goes from Set mode to Meter mode if you do not press any key for 3 seconds You can enable or disable the output of the power supply from the front panel by pushing the Output On Off button When the output is off the OFF message will appear on the display above the current and voltage values The display shows the present operating status of the power supply with display messages When the power supply operates in constant voltage mode the CV message displays above the voltage When it operates in the constant current mode the CC message displays above the voltage NOTE If the front panel was locked with a password enter the correct password after you push one of the front panel buttons then you can change the settings NOTE To cancel a function operation V set I set Save and Recall push the Esc button PWS 2185 PWS 2323 PWS2326 and PWS2721 User Manual Operating Basics Configuring the Instrument for Your Applicatio
17. n The menu system includes settings like Max Volt that determines the maximum voltage output of the power supply and settings like Out Recall and Save Last that determine how the instrument initializes itself on power up This power supply features a constant voltage constant current automatic crossover This feature permits continuous operation in the transition from constant voltage mode to constant current mode as the load changes The intersection of the constant current and constant voltage modes is called the crossover point For example if the load is such that the power supply is operating in constant voltage mode the power supply provides a regulated output voltage The output voltage remains constant as the load increases until the preset current limit is reached Then the crossover occurs At that point the output current becomes constant and the output voltage drops in proportion to further load increases Crossover is indicated by the front panel CC and CV messages If the CV message appears the instrument is operating in constant voltage mode If the CC message appears the instrument is operating in constant current mode Crossover from the constant current mode to the constant voltage mode also occurs automatically in response to a decrease in load For example suppose you are charging a 12 V battery Initially the open circuit voltage of the power supply is preset for 13 8 V A low battery places a heavy load on the power suppl
18. n the instrument off and then restoring the saved setting when you turn the instrument back on NOTE Wait 3 seconds after changing the settings to allow the settings to be completely stored before powering off the instrument Key Beep Turns on or off a beeper sound when you push a button or press a key On enables the key sound Off disables it Sys Info Provides instrument information including model number serial number and software version Display messages Symbol Description OFF The power supply output is off PWS 2185 PWS 2323 PWS2326 and PWS2721 User Manual Operating Basics Display messages cont Symbol Description cv Constant voltage mode cc Constant current mode Meter The Volt meter display is active Lock Front panel controls are locked Enter password to unlock Rear Panel at a Glance 2751 002 1 Cooling vents 2 110 V 220 V power connector 3 Factory test port A CAUTION Unauthorized use of the factory test port could damage this product PWS2185 PWS2323 PWS2326 and PWS2721 User Manual 9 Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 TestEquipmentDepot com Operating Basics 4 110 V 220 V selector switch 110V 220V Front panel Operation 10 Within a few seconds after powering on the power supply goes into Meter
19. nnections 2 Properly setthe 110 V 220 V selector switch on the bottom of the instrument PWS2185 PWS2323 PWS2326 and PWS2721 User Manual 3 Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 TestEquipmentDepot com Getting Started 110V 220V 3 Connect the power cord that was provided with the instrument to the power connector on the rear panel Connect the power cord plug to a properly grounded electrical outlet 4 Push the power button on the front panel To power off the instrument push the front panel power button WARNING To satisfy safety requirements always use load wires heavy enough not to overheat when carrying the maximum short circuit output current of the power supply If there is more than one load then every pair of load wires must be capable of safely carrying the full rated current of the power supply What to Do if the Power Supply Does Not Turn On To solve problems you might encounter when turning on the instrument follow these steps 1 Verify that there is AC power to the power supply First check that the AC power cord is firmly plugged into the power connector on the rear panel of the power supply You should also make sure that the AC power source you plugged the power supply into is energized Then check that the power supply is turned on Verify the power line voltage settings Check that the line voltage selector switch on the bottom of the instrume
20. nt is set to the proper value for your country 110 Vac or 220 Vac Change the voltage setting if itis not correct NOTE Under certain circumstances powering the instrument from a mains voltage for which it is not configured can cause the mains fuse to open 3 4 Verify that the correct power line fuse is installed If the fuse is damaged replace the fuse for your power supply If you set the line selection to 110 V use a 5 A TH 250 V fuse If you set the line selection to 220 V use a 2 5 A TH 250 V fuse If you need more help contact Tektronix PWS 2185 PWS 2323 PWS2326 and PWS2721 User Manual Getting Started Check the Output The following procedures check that the power supply develops its rated outputs and properly responds to operation from the front panel Voltage output check To verify basic voltage functions without a load follow these steps 1 9 eo no FP YS YS Remove all leads from the output connectors Turn on the power supply Push Menu to bring up the Reset All menu This menu allows you to set the instrument to default settings Push Enter Push the up arrow button to select Yes Push Enter to restore the default settings Push the output On Off button to enable the output The OFF message above and to the left of the voltage display will turn from Off to CV The meter indicator should be lit and the meter readings should show 1 V and 0A Check that the front panel voltmeter pr
21. nu 8 On off 8 Recall 8 Save 7 V set 7 I set button 7 Initial output 13 Installation 3 K Key arrow 7 function 7 number 7 Save and Recall 7 Key Beep 14 Max Volt Set 12 Menu button 8 Messages 8 N No power 4 O On off button 8 Operating requirements 2 Operation current limit adjustment 12 recalling setups 12 saving setups 12 voltage limit adjustment 12 Optional accessories 1 Options 1 PWS2185 PWS2323 PWS2326 and PWS2721 User Manual Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 TestEquipmentDepot com Index Output Display 7 Output recall 13 P Power button 7 off 4 on 3 socket 9 R Rear panel 9 Recall button 8 Recall output 13 Requirements operating 2 S Safety Summary iii Save Button 7 Last 13 Saving and recalling setups 12 Setting current limit 12 voltage limit 12 Settings display 7 Speciftations 2 Standard accessories 1 T Troubleshooting 4 V V set button 7 Voltage limit adjustment 12 Volts display 7 15
22. operly responds to the number keys Push V set use the number keys to set the voltage value to 0 and push Enter Check if the displayed voltage value is approximately 0 V and check if the displayed current value is approximately 0 A You can confirm the 0 V setting with a voltmeter Push V set and use the numeric keys and Enter button to set the voltage value to the maximum allowable for your power supply as indicated on the front panel of the unit Check if the displayed voltage value is approximately the same value as the voltage setting Current output check To verify the basic current functions with a short across the power supply output follow these steps 1 nS ao PE oS PY Remove all leads from the output connectors Turn on the power supply Push Menu to bring up the Reset All menu This menu allows you to set the instrument to default settings Push Enter Push the up arrow button to select Yes Push Enter to enable the default settings Ensure that the output is disabled and the display OFF message is turned on If needed push the output On Off button Use an insulated test lead to connect a short across the and output terminals Use a wire size suffrient to handle the maximum current You should use at least a 22 gauge wire N WARNING To satisfy safety requirements always use load wires heavy enough not to overheat when carrying the maximum short circuit output current of the power supply If there is more
23. t 2 Use the numeric keys and push Enter to set the voltage limit You can also use the up down right and left arrow keys Save and Recall Setups SAVE and RECALL You can store up to 20 different setups in setup memory locations 1 to 20 Each setup includes the set voltage limit the set current limit and the maximum output voltage value When shipped from the factory setup memories 1 through 20 are empty Save and recall setups as follows Saving setups 1 After you set up the power supply voltage limit current limit and the maximum output voltage push the Save button 2 Use the number keys or the arrow keys to select the setup memory 1 to 20 that you want to store the values in 3 Push Enter to confrm the memory location Recalling setups 1 Push Recall 2 Use the number keys or the arrow keys to select the setup that you want to recall 3 Push Enter Set the Maximum Voltage gt MAX VOLT This control determines the maximum voltage that you can set using the V set control This can help keep accidental over voltage from being applied to sensitive loads To setthe maximum voltage follow these steps 1 Push Menu Use the down arrow key to select Max Volt Push Enter and use the number keys to enter the voltage value Push Enter to turn on the maximum voltage feature Limit Done should appear briefly and then Max Volt will appear Push Esc to exit the menu Push V Set NO oOo a e DM Use the numeric
24. t control and laboratory use Part 1 Additional Compliances m IEC 61010 1 2001 Safety requirements for electrical equipment for measurement control and laboratory use Equipment Type Test and measuring equipment Safety Class Class 1 grounded product Pollution Degree Description A measure of the contaminants that could occur in the environment around and within a product Typically the internal environment inside a product is considered to be the same as the external Products should be used only in the environment for which they are rated m Pollution Degree 1 No pollution or only dry nonconductive pollution occurs Products in this category are generally encapsulated hermetically sealed or located in clean rooms Pollution Degree 2 Normally only dry nonconductive pollution occurs Occasionally a temporary conductivity that is caused by condensation must be expected This location is a typical office home environment Temporary condensation occurs only when the product is out of service Pollution Degree 3 Conductive pollution or dry nonconductive pollution that becomes conductive due to condensation These are sheltered locations where neither temperature nor humidity is controlled The area is protected from direct Sunshine rain or direct wind Pollution Degree 4 Pollution that generates persistent conductivity through conductive dust rain or snow Typical outdoor locations PWS 2185 PWS2323 P
25. ted from every connection point In some cases connections must be exposed to potential human contact Product operators in these circumstances must be trained to protect themselves from the risk of electric shock If the circuit is capable of operating at or above 1000 volts no conductive part of the circuit may be exposed WARNING Use properly rated load wires All load wires must be heavy enough not to overheat when carrying the maximum short circuit output current of the power supply If there is more than one load then any pair of load wires must be capable of safely carrying the full rated short circuit output current of the power supply N WARNING Do not loosen any screw on this product There are no user serviceable components inside WARNING To reduce risk of fire and shock ensure the mains supply voltage fluctuations do not exceed 10 of the operating voltage range Installing the System This section contains information on how to install your PWS2000 power supply Unpack the instrument and check that you received all the items listed as standard accessories m Check that you also received any other accessories that you ordered with your instrument Check the Tektronix Web site www tektronix com for the most current information To verify that the power supply is ready to use follow these procedures Powering the Instrument On and Off To power on the instrument follow these steps 1 Make all the co
26. tential hazards use this product only as specifed Only qualified personnel should perform service procedures To Avoid Fire or Personal Injury Use proper power cord Use only the power cord specif d for this product and certifed for the country of use Use proper voltage setting Before applying power ensure that the line selector is in the proper position for the source being used Ground the product This product is grounded through the grounding conductor of the power cord To avoid electric shock the grounding conductor must be connected to earth ground Before making connections to the input or output terminals of the product ensure that the product is properly grounded Observe all terminal ratings To avoid fre or shock hazard observe all ratings and markings on the product Consult the product manual for further ratings information before making connections to the product Power disconnect The power switch disconnects the product from the power source See instructions for the location Do not block the power switch it must remain accessible to the user at all times Do not operate without covers Do not operate this product with covers or panels removed Do not operate with suspected failures If you suspect that there is damage to this product have it inspected by qualifed service personnel Avoid exposed circuitry Do not touch exposed connections and components when power is present Use proper fuse Use only the fuse t
27. y and it operates in constant current mode You adjust the instrument to charge the battery at the rate of 1 A As the battery becomes charged and its voltage approaches 13 8 V the load decreases to the point where the battery no longer demands the full 1 A charging rate The power supply then crosses over to constant voltage mode Initializing to the Default Setup Use the default setup to get the power supply into a default initial state 1 Remove all leads from the output connectors Turn on the power supply Push Menu to bring up the Reset System menu This menu allows you to set the instrument to default settings Push Enter a e O N Push the up arrow button to select Yes and push Enter to enable the default settings The default settings are Output On Off OFF E V Set 1 000V Set 0 1000A m Max Volt Set Off Save Last On Out Recall On Key Beep Off PWS 2185 PWS2323 PWS2326 and PWS2721 User Manual 11 Operating Basics 12 Setting the Current Limit I Set You may set the current limitfrom 0 A to the maximum current value of each model The maximum current rating is shown on the instrument name plate 1 Push I Set 2 Use the numeric keys and push Enter to set the current limit You can also use the up down right and left arrow keys Setting the Voltage Limit V Set You may set the voltage limit from 0 V to the maximum voltage rating shown on the instrument nameplate 1 Push V se
28. ype and rating speciffd for this product Do not operate in wet damp conditions Do not operate in an explosive atmosphere Keep product surfaces clean and dry Provide proper ventilation Refer to the manual s installation instructions for details on installing the product so it has proper ventilation PWS 2185 PWS2323 PWS2326 and PWS2721 User Manual jii General Safety Summary Terms in This Manual These terms may appear in this manual A WARNING Warning statements identify conditions or practices that could result in injury or loss of life N CAUTION Caution statements identify conditions or practices that could result in damage to this product or other property Symbols and Terms on the Product These terms may appear on the product m DANGER indicates an injury hazard immediately accessible as you read the marking m WARNING indicates an injury hazard not immediately accessible as you read the marking m CAUTION indicates a hazard to property including the product The following symbol s may appear on the product A A O JO CAUTION WARNING Protective Ground Earth Terminal Mains Disconnected Mains Connected Refer to Manual High Voltage Earth Terminal OFF Power ON Power a LU On Off iv PWS2185 PWS2323 PWS 2326 and PWS2721 User Manual Compliance Information Compliance Information This section lists the EMC electromagnetic compliance safety and environmental standards with which the
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