BKPRECISION_8540_manual 电路图.pdf

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1、Model 8540 60V/30A/150W DC Electronic Load INSTRUCTION MANUAL Model 8540 RadioFans.CN 收音机爱 好者资料库 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 vol

2、tage 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. WARNING We

3、 certify that this product met its published specifications at time of shipment from the factory. Certification Notice The information contained in this document is subject to change without notice. Please consult the B&K Precision website for the latest version. RadioFans.CN 收音机爱 好者资料库 Compliance S

4、tatements 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 should not be

5、 disposed of as unsorted municipal waste. Please utilize your local WEEE collection facilities in the disposition of this product and otherwise observe all applicable requirements. Disposal of Old Electrical & Electronic Equipment (Applicable in the European Union and other European countries with s

6、eparate collection systems) Connect it to safety earth ground using the wire recommended in the users manual. High voltage danger The symbol on an instrument indicates that the user should refer to the operating instructions located in the manual. Safety Symbols RadioFans.CN 收音机爱 好者资料库 Unpacking the

7、 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&K Precision distributor. Check the list of supplied items Verify that you have received the followin

8、g items with your power supply. If anything is missing, contact your authorized B&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

9、set to the correct line voltage. If necessary, replace fuses according to the table below. 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 procedure Turn on the

10、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. Check out T0 250 mA, 250V198 V to 242 V220V AC T0 500 mA, 250V99 V to 121 V110V AC FuseRangeLine voltage The 9 pin D-sub connecto

11、r in the rear is for factory use only! This instrument does not offer a remote control interface. Note About the 8540 The B&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

12、 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. Full digital control 1mV /1mA measurement resolution Compact si

13、ze Bright, readable LED display Operating modes: CC/CV/CR Input on/off control High reliability due to OCP/OVP (over current, over voltage) protection Storage for 100 groups, 4 setups each Easy operation Features Constant Resistance (CR) mode In CR mode, the DC load will sink a current linearly prop

14、ortional to the voltage at the terminals. Constant V I Constant resistance Constant Current (CC) mode V I ConstantCurrent CC 時 , 為幾伏特,ITECH 吸取電 V Constant current I In CC mode, the DC load draws a constant current regardless of the voltage on its terminals. V I Constant voltage I I Constant Voltage

15、(CV) mode In CV mode, the DC load will draw enough current to keep the voltage at the terminals constant. 3/30A selector（shift) Shift button Main power on/off Air flow input Input on/off button Switch + memory C Left arrow + memory A Memory save (shift) Current or power value Step D + memory D Step

16、C + memory C Step A + memory A Step B + memory B Voltage or preset current, voltage or resistance value CV mode indicator Short indicator CC mode indicator CR mode indicator Recall indicator 30A mode selector indicator Shift indicator Input off indicator Right arrow + memory B Rotary encoder Input +

17、 Input - Recall (shift) Function setup (shift) Mode selector + memory D Voltage display indicator Current display indicator Setup indicator Short on/off Panel layout Power display indicator Quick Start Set the line voltage selector on the back panel to your local line voltage (110 VAC or 220 VAC). T

18、hen connect the power cord to the DC load and a wall power socket. Turn on the power to the DC load by pressing the 1 on the power switch. Set value Press thekey to turn on the 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

19、the knob to change its value. After setting the current value, press the key to turn the load on. Constant Current Mode A AB B ModeDModeD On/OffOn/Off Press thekey 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 tur

20、n the knob to change its value. After setting the voltage value, press the key to turn the load on. Constant Voltage Mode A A B B ModeDModeD On/OffOn/Off Press the key to turn on the CR LED. The load is now in CR mode. Set the resistance value by pressing the or keys to select the digit to adjust, t

21、hen turn the knob. After setting the voltage value, press the key to turn the load on. Constant Resistance Mode B BA A ModeDModeD On/OffOn/Off Set value Indicates which digit to adjust RecallCC ShortCV OFFShift 30ACR ABCD Set V W A 150W DC Electronic Load 8540 Indicates which digit to adjust RecallC

22、C ShortCV OFFShift 30ACR ABCD Set V W A 150W DC Electronic Load 8540 RecallCC ShortCV OFFShift 30ACR ABCD Set V W A 150W DC Electronic Load 8540 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.

23、 NOTE 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. ShiftShift A A B B ViewC Change the displayed values The electronic load usually displays the a

24、ctual voltage and current values. Press the key to display the preset voltage, current or resistance value and the actual power. Press the key again to return to the current/voltage display. ViewC ViewC Input on/off The load can be toggled on and off by pressing the key. The programmed setting is no

25、t affected. The OFF LED will be lit when the load is off. On/OffOn/Off RecallCC ShortCV OFFShift 30ACR ABCD Set V W A 150W DC Electronic Load 8540 CC ShortCV OFFShift 30ACR ABCD Set V W A 150W DC Electronic Load 8540 RecallCC ShortCV OFFShift 30ACR ABCD Set V W A 150W DC Electronic Load 8540 Key sou

26、nd Press again to turn the key sound ON or OFF (bEEP). Use the rotary knob to make your selection. ViewC Recall 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-cir

27、cuit 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. ShiftShiftOn/OffOn/Off Recall Operation Press the and (Recall) keys. The Recall LED will turn on, which means you may recall se

28、ttings from the currently-chosen group. Press the or or or 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. ShiftShift B B ShiftShift B B A AB B ViewCMode DModeD Store Operation To save the loads

29、 settings to a register (internal memory), press theand (Save) keys. The LEDs will blink together. Press the or ororkeys to save the settings to non volatile memory. Note you may do this for any of the 100 different groups assigned in the previous paragraph (Choose Storage Group). ShiftShift A A A A

30、 B B ViewCModeDModeD AB CD Choose Storage Group Press the key to see the storage group (GrP) setting. Use the and keys and knob to choose the storage group. Each group can store four instrument settings. (see storage operation). Press the key to confirm selection of the displayed storage group. Ther

31、e are 100 groups that can be stored. A AB B ViewC ViewC RecallCC ShortCV OFFShift 30ACR ABCD Set V W A 150W DC Electronic Load 8540 Set address Presstwice to skip the address menu and advance to the next menu. Note: This setting is for factory use only and should be ignored. RecallCC ShortCV OFFShif

32、t 30ACR ABCD Set V W A 150W DC Electronic Load 8540 ViewC 1 1000-4000 0.1 100-999 0.01 A0-30 A 0.01 10-99 0.001 0.1-10 0.001 A0-3 A 0.01 V 10 1000-4000 1 100-999 0.1 A0-30 A 0.1 10-99 0.01 0.1-10 0.01 A0-3 A 0.1 V 100 1000-4000 10 100-999 1 A0-30 A 1 10-99 0.1 0.1-10 0.1 A0-3 A 1 V 1000 1000-4000 10

33、0 100-999 10 A0-30 A 10 10-99 1 0.1-10 1 A0-3 A IncrementRangeIncrementRange 10 V Resistance Increment Current Increment Voltage Increment Cursor position Knob incremental values A B C D The following table shows the incremental changes in the set value when the knob is turned corresponding to which

34、 “cursor” LED is lit. Checking the set value The electronic load usually displays the actual voltage and current values at the loads terminals. To check the set value, press the or keys. The set value display will blink, showing you the currently-set value. You can use the knob to change it. It will

35、 stop blinking after 3 seconds and revert to the previous display. You can also turn the knob to see the set value. A A B B The and keys switch between the 3 A and 30 A ranges. The 30A LED is lit when the load is on the 30 A range. The current resolution is 10 mA for the 30 A range and 1 mA for the

36、3 A range. Current range switch (3/30 A) ShiftShift ModeDModeD 2.7 kg 6 pounds Weight (net) 10 mW(1%+0.5%FS)10-99 W 88 x 175 x 282 mm 3.5 x 6.9 x 11.10 inches Dimension（W x H x D） 100 mW(1%+0.5%FS)100-150 W 1 mW(1%+0.5%FS)0-10 W Power Measurement 10 mV(0.05% + 0.1%FS)0-60 V 1 mV(0.05% + 0.1%FS)0-10

37、V Voltage Measurement 10 mA(0.1% + 0.15%FS)0-30 A 1 mA(0.1% + 0.1%FS)0-3 A Current Measurement 1 (1%+0.8%FS)1K-4K 0.1 (1%+0.8%FS)100-999 0.01 (1%+0.8%FS)10-99 0.001 (1%+0.8%FS)0.1-10 CR Mode Regulation 10 mA(0.1%+0.15%FS)0-30 A 1 mA(0.1%+0.1%FS)0-3 A CC Mode Regulation 10 mV(0.05%+0.1%FS)0.1-60 V CV

38、 Mode Regulation 10 mA(0.1%+0.15%FS)0-30 A 1 mA(0.1%+0.1%FS)0-3 A 10 mV(0.05%+0.1%FS)0-60 V 1 mV(0.05%+0.1%FS)0-10 V ResolutionAccuracyRange Load Regulation 150 WPower 1 mA 30 ACurrent 0 60 VVoltage Input rating ( 0 - 40 ) 8540Parameter Specifications Specifications and information are subject to ch

39、ange without notice. Please visit for the most current product information. Service Information Warranty Service: Please go the service and support section on our website to obtain a RMA #. Return the product in the original packaging with proof of purchase to the address below. Clearly state on the

40、 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 to obtain a RMA #. Return the product in the original packaging to the address below. Clearly state

41、 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 supp

42、ort section on our website. Return all merchandise to B&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-Nor

43、th American shipping fees please contact B&K Precision Corp. B&K Precision Corp. 22820 Savi Ranch Parkway Yorba Linda, CA 92887 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&K

44、 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&K Precision Corp. will, without charge, repair or replace, at its option, the defective pro

45、duct or its component parts. The returned product must be accompanied by proof of the purchase date in the form 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 within fifteen (15) days of purchase. Exclusion

46、s: 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&K Precision Corp. shall not be liable for any consequential damages, including without lim

47、itation 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&K Precision Corp. 22820 Savi Ranch Parkway Yorba Linda, CA 92887 714-921-9095 Warranty Intentionally left blank 22820 Savi Ranch Parkway Yorba Linda, CA 92887 2008 B&K Precision Corp. Printed in Chinaversion 12092008