8540 DC Load User Manual
Contents
1. should not be disposed of as unsorted municipal waste Please utilize your local WEEE collection facilities in the disposition of this product and otherwise observe all p applicable requirements Safety Symbols Connect it to safety earth ground using the wire recommended in the user s manual A N High voltage danger The symbol on an instrument indicates that the user should refer to the operating instructions located in the manual Check out Unpacking the instrument This instrument was carefully inspected before shipment Upon receipt inspect the instrument for damage that might have occurred in transit If any sign of damage is found notify your B amp K Precision distributor Check the list of supplied items Verify that you have received the following items with your power supply If anything is missing contact your authorized B amp K Precision distributor Power cord Instruction manual Power Requirements The 8540 can operate on 110V AC or 220V AC Before connecting the power cord to an AC outlet make sure the voltage selector in the rear is set to the correct line voltage If necessary replace fuses according to the table below 110V AC 99 V to 121 V TO 500 mA 250V 220V AC 198 V to 242 V TO 250 mA 250V The instrument power fuse is located in a fuse compartment below the AC input receptacle To access the fuse first disconnect the power cord and then remove the fuse cartridge Power on pro2. 30A CR indi Step C memory C CR mode indicator Step D memory D 30A mode selector indicator OFF Shift Shift indicator Current or power value Input off indicator Power display indicator Current display indicator Memory save shift lt ___ Save Recall Recall shift Left arrow memory A Right arrow memory B Function setup shift Setup SS gt 3 30A 3 30A selector shift Switch memory C Mode selector memory D Short on off lt Short Input on off button Shift button Aic ow input _ __ rs js Input Main power on off Input POWER gt Quick Start Set the line voltage selector on the back panel to your local line voltage 110 VAC or 220 VAC Then connect the power cord to the DC load anda wall power socket Turn on the power to the DC load by pressing the 1 on the power switch Set value Constant Current Mode aan Press the key to turn on the 150W DC Electronic Load CC LED The load is now in CC mode Set the current value by pressing the or keys to select the digit to adjust then turn the knob to change its value After setting the current value press the key to turn the load on Indicates which digit to adjust Constant Voltage Mode Press the key to turn on the CV LED The load is now in CV mode Set the voltage value by pressing the or keys to select the digit to adjust then
3. INSTRUCTION BK PRECISION MANUAL MT ERLT Model 8540 60V 30A 150W DC Electronic Load 854 BK PRECISION 8540 150W DC Electronic Load Set Recall CC V Short CV A e Ce a w 30A cR A OFF Shift Safety Regulations To avoid electrical shock do not open the cabinet Refer servicing to qualified personnel only To avoid injuries always disconnect power discharge circuits and remove external voltage sources before touching components KEEP AWAY FROM LIVE CIRCUITS We cannot accept responsibility for any direct or indirect financial damage or loss of profit that might occur when using the electronic load The instrument chassis and cover must be connected to an electrical ground Certification We certify that this product met its published specifications at time of shipment from the factory Notice The information contained in this document is subject to change without notice Please consult the B amp K Precision website www bkprecision com for the latest version Compliance Statements Disposal of Old Electrical amp Electronic Equipment Applicable in the European Union and other European countries with separate collection systems This product is subject to Directive 2002 96 EC of the European Parliament and the Council of the European Union on waste electrical and electronic equipment WEEE and in jurisdictions adopting that Directive is marked as being put on the market after August 13 2005 and
4. Load Press again to turn the key sound ON or OFF bEEP Use the rotary knob to make your selection wn iv AO BIO EAO BIO gt O OK lt O Set address BK PRECISION Press twice to skip the 150W DC Electronic Load address menu and advance to the next menu Note This setting is for factory use AO BIO GO BIO only and should be ignored D Choose Storage Group Press the lWiew key to see the EAEri 8540 storage group GrP setting Use 150W DC Electronic Load the a and keys and knob to choose the storage group Each group can store four instrument settings Each aO EO KO BO setting can store two parameters see storage operation Press the key to confirm selection of the displayed storage group There are 100 groups that can be stored 8540 d iv p ollo ofelo gt O lt O olol offels oof on v gt Oz lt O ofglols olof of els ofglofg Store Operation To save the load s settings to a register internal memory press the Cand Save keys The _ A Di LEDs will blink together Press thel or E gt orfGlWiew or maaa keys to save the settings to non volatile memory Pressing A will store to A location B to B location C to C location D to D location Hence users can save up to four settings in each group Note you may do this for any of the 100 different groups assigned in the previous paragraph Choose Storage Group Each settings can store two pa
5. cedure Turn on the instrument by pressing the main power switch on the front panel of the unit The instrument will automatically revert to the last setting before the power was turned off The 9 pin D sub connector in the rear is for factory use only This instrument does not offer a remote control interface About the 8540 The B amp K Precision 8540 DC electronic load 60V 30A 150W can sink DC current in constant current constant voltage and constant resistance modes Measured values have 10 mV and 1 mA resolution Shorts can be simulated Storage is provided for up to 100 groups with 4 instrument setups per group The instrument is easy to use and will find many uses for testing DC power supplies batteries and DC to DC converters Constant Current CC mode Constant Voltage CV mode Constant Resistance CR mode Features Full digital control a1mV 1mA measurement resolution aCompact size Bright readable LED display Operating modes CC CV CR alnput on off control sHigh reliability due to OCP OVP over current over voltage protection aStorage for 100 groups 4 setups each mEasy operation Panel layout Setup indicator Voltage display indicator BK PRECISION 8540 Voltage or preset current 150W DC Electronic Load Set Recall CC voltage or resistance value CC mode indicator Recall indicator Shot CV CV mode indicator Short indicator Step B memory B v Step A memory A
6. ecision com to obtain a RMA Return the product in the original packaging to the address below Clearly state on the RMA the performance problem and return any leads probes connectors and accessories that you are using with the device Customers not on an open account must include payment in the form of a money order or credit card For the most current repair charges please refer to the service and support section on our website Return all merchandise to B amp K Precision Corp with pre paid shipping The flat rate repair charge for Non Warranty Service does not include return shipping Return shipping to locations in North America is included for Warranty Service For overnight shipments and non North American shipping fees please contact B amp K Precision Corp B amp K Precision Corp 22820 Savi Ranch Parkway Yorba Linda CA 92887 www bkprecision com 714 921 9095 Include with the returned instrument your complete return shipping address contact name phone number and description of problem Limited One Year Warranty B amp K Precision Corp warrants to the original purchaser that its products and the component parts thereof will be free from defects in workmanship and materials for a period of one year from date of purchase B amp K Precision Corp will without charge repair or replace at its option the defective product or its component parts The returned product must be accompanied by proof of the purchase date in the form
7. ng table shows the incremental changes in the set value when the knob is turned corresponding to which cursor LED is lit Cursor voltage current Resistance Increment position Increment Increment 0 3A 1A 100 999 Q 100 Q 0 30A 10A 1000 4000 Q 1000 Q 0 30A 1000 4000 Q 100 Q 0 30A 0 1 10 Q 0 001 Q 0 3A 0 001A 10 99 Q 0 01 QO 0 01 V 0 30A 0 01A WOA 0 1 10 Q 0 01 Q0 Specifications 0 10 V 0 05 0 1 FS Load Regulation 0 60 V 0 05 0 1 FS 0 1 0 1 FS 0 30 A 0 1 0 15 FS CV Mode 5 A 2 co gt 0 1 10 Q 1 0 8 FS 0 001 Q CR Mode 10 99 Q 1 0 8 FS 0 01 0 0 10 W 1 0 5 FS 1 mW Power Measurement 10 99 W 1 0 5 FS 10 mW 100 150 W 1 0 5 FS 100 mW 88 x 175 x 282 mm Pinonsien WHD 3 5 x 6 9 x 11 10 inches 2 7 k Weight net 6 Sine Specifications and information are subject to change without notice Please visit www bkprecision com for the most current product information ro oo oo gt gt Warranty Service Information Warranty Service Please go the service and support section on our website www bkprecision com to obtain a RMA Return the product in the original packaging with proof of purchase to the address below Clearly state on the RMA the performance problem and return any leads probes connectors and accessories that you are using with the device Non Warranty Service Please go the service and support section on our website www bkpr
8. of a sales receipt To obtain warranty coverage in the U S A this product must be registered by completing a warranty registration form on www bkprecision com within fifteen 15 days of purchase Exclusions This warranty does not apply in the event of misuse or abuse of the product or as a result of unauthorized alterations or repairs The warranty is void if the serial number is altered defaced or removed B amp K Precision Corp shall not be liable for any consequential damages including without limitation damages resulting from loss of use Some states do not allow limitations of incidental or consequential damages So the above limitation or exclusion may not apply to you This warranty gives you specific rights and you may have other rights which vary from state to state B amp K Precision Corp 22820 Savi Ranch Parkway Yorba Linda CA 92887 www bkprecision com 714 921 9095 Intentionally left blank BK PRECISION 22820 Savi Ranch Parkway Yorba Linda CA 92887 www bkprecision com 2008 B amp K Precision Corp Printed in China version 04152010
9. rameters The mode of operation i e CC CV CR and the values set for that mode Recall Operation Press the Gig and Gb Recall keys The Recall LED will turn on which means you may recall settings from the currently chosen group Press the maor BP or Giview or Giiede keys to recall the desired setting When the Recall LED is lit the other keys are disabled To exit the recall state press the and Recall keys again Short When the keys are pressed the load simulates a short circuit In CC and CR modes the maximum short circuit current value is 1 2 times the current range In CV mode the short circuit current is the same as setting the CV operation to 0 1 V Note that the short circuit current in CV mode will be less than the short circuit current in CC or CR modes Current range switch 3 30 A The Si and keys switch between the 3 A and 30 A ranges The 30A LED is lit when the load is on the 30 Arange The current resolution is 10 mA for the 30 A range and 1 mA for the 3 A range Checking the set value The electronic load usually displays the actual voltage and current values at the load s terminals To check the set value press the Maor E gt keys The set value display will blink showing you the currently set value You can use the knob to change it It will stop blinking after 3 seconds and revert to the previous display You can also turn the knob to see the set value Knob incremental values The followi
10. turn the knob to change its value After setting the voltage value press the key to turn the load on Set value B JEDN 8540 150W DC Electronic Load Constant Resistance Mode Press the imode key to turn on the BK PRECISION CR LED The load is now in CR mode 150W DC Electronic Load Set the resistance value by pressing the or keys to select the digit to adjust then turn the knob After setting the voltage value press AIO BIO KO BIO the key to turn the load on Input on off The load can be toggled on and off by pressing the key The programmed setting is not affected The OFF LED will be lit when the load is off Change the displayed values BK PRECISION ET The electronic load usually displays 150W DC Electronic Load the actual voltage and current values Press the key to display the preset voltage current or resistance value and the actual power Press AO BIO ClO DIO the key again to return to the current voltage display 0800 OCP function Press the key then press the key The display will show OCP Over Current Protection This is the maximum current that will be allowed Use the and keys and the knob to set the value AO BO ECO BO The input of the electronic load will be turned off automatically if the OCP value is lower than the actual current value The default OCP setting is 30 A d oO Or O lt 150W DC Electronic Load Key sound eit oil 8540 150W DC Electronic
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