B&K 50 Series II User Manual

Model: 8600, 8601, 8602 Programmable DC Electronic Loads USER MANUAL

viii CE Declaration of Conformity The instrument meets the requirements of 2006/95/EC Low Voltage Directive and 2004/108/EC Electromagnetic Compatib

SERVICE INFORMATION Warranty Service: Please go to the support and service section on our website at www.bkprecision.com to obtain a RMA #. Retur

LIMITED THREE-YEAR WARRANTY B&K Precision Corp. warrants to the original purchaser that its products and the component parts thereof, will be

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ix Safety Symbols CAUTION indicates a hazardous situation which, if not avoided, could result in minor or moderate injury. WARNING indicates a haza

x Table of Contents Safety Summary ... i Compliance S

xi Constant Current (CC) Mode ... 18 Constant Voltage (

xii OPP Test Function ... 72 3.10 Key

1 1 General Information 1.1 Product Overview The 8600 Series DC Electronic Loads are versatile instruments used for static and dynamic testing o

2 1.2 Package Contents Please inspect the instrument mechanically and electrically upon receiving it. Unpack all items from the shipping carton,

3 Figure 1 – Front and Side View

4 Figure 2 - Rear View

5 1.4 Rackmount Installation The instrument can be installed in a standard 19 inch rack. The optional rackmount kit IT-E151 is required. Below i

6 1.5 Front Panel Overview Front Panel Description Power On/Off switch Local button Shift button Numeric keypad CC/OCP button CW/

7 1.6 Rear Panel Overview Rear Panel Description Cooling fan vent Remote control port (not used) RS232 Interface Current Monitor BN

8 1.7 Display Overview Figure 5 – Display Screen Display Description Measured input voltage Measured input power Settings Display Displays par

9 Rear Indicates external analog control is enabled. Auto Indicates voltage auto range is enabled. * Indicates key lock is enabled Shift Indicates s

10 2 Getting Started Before connecting and powering up the instrument, please review and go through the instructions in this chapter. 2.1 Input

11 Disconnect all cables including the power cord from the instrument when changing the instrument's line voltage. After changing the line vo

12 Figure 7 - Fuse Box 2.2 Input Connections The main DC input terminal is a screw type binding post terminal located in the front panel. To lo

13 2.3 Preliminary Check Complete the following steps to verify that the load is ready for use. 1. Verify AC Input Voltage Verify and check to m

14 Table 2 - Self-test Messages Error Message on Display Description EEPROM FAILURE The internal EEPROM is corrupted or damaged. Config Data Lost T

15 Check Model and Firmware Version The model and firmware version can be verified by using the *IDN? query remote command. It can also be found f

i Safety Summary The following safety precautions apply to both operating and maintenance personnel and must be followed during all phases of operati

16 3 Front Panel Operation 3.1 Menu Options Most settings and parameters can be configured from the built-in menu systems of the instrument. Ther

17 How to Navigate the Menu Before using the instrument, it is important to be familiarized with its menu structure and learn how to view or change

18 3.2 Configure Operation Modes (CC/CV/CR/CW) The electronic load can work in the following modes: 1) Constant current (CC) operation mode 2) C

19 The setup parameters are: Range, High (Voltage limit), Low (Voltage limit), and Rise/Fall time. Use the key to select each parameter, and use

20 Current slew rate is defined as the change in current over time. A programmable slew rate allows a controlled transition from one load setting to

21 Configure CV Parameters There are several parameters that should be set up prior to operating in CV mode. Press so that it lights up, the

22 Note: This parameter is used for Automatic Test Function ONLY. Low This parameter refers to the current low limit for the automatic test mode. D

23 The setup parameters are: Range, High (Voltage limit), and Low (Voltage limit). Use the key to select each parameter, and use the numeric keypa

24 Configure CW Parameters There are several parameters that should be set up prior to operating in CW mode. Press so that it lights up, then p

25 This parameter refers to the voltage low limit for the automatic test mode. During automatic test mode, the DUT must be operating below the conf

ii Category IV (CAT IV): Measurement instruments whose measurement inputs are meant to be connected to the primary power entering a building or other

26 Note: Restoring the instrument to factory default will change all current instrument settings and parameters back to their default values. 1.

27 Configure Power-On State The initial Power-On state of the load can be configured by following the steps below: 1. From the SYSTEM menu, sel

28 panel, through a remote command via remote interface or through the external trigger input in the rear panel. Follow the steps below to configur

29 The instrument can save up to 100 instrument settings in non-volatile memory. Memory is allocated in 10 different storage groups (group 0 to 9),

30 Select Storage Group 1. From the SYSTEM menu, browse and select Memory and press . The following screen will appear. 2. Use the current adju

31 3. Use the current adjust knob or the numeric keypad to enter the memory location in which to store current instrument settings. Select between

32 1. From the SYSTEM menu, browse and select Displ and press . The following screen will appear. 2. Select On to enable the timer, and Off (de

33 From the SYSTEM menu, browse and select Communication and press . The following screen will appear. RS-232 Follow the steps below to configur

34 5. All serial settings must match with the settings configured on the PC in order for communication to link successfully. USBTMC A USB Type A

35 3.4 CONFIG Menu All setup procedures and settings explained in this section can be accessed from the CONFIG menu. To access this menu, press

iii Do not operate in an explosive or flammable atmosphere Do not operate the instrument in the presence of flammable gases or vapors, fumes, or fi

36 Figure 9 - The Load's Operating Range with Von Latch set to ON When Von Latch is OFF, the electronic load will begin sinking current if th

37 Figure 10 - Von Latch OFF The Load's Operating Range with Von Latch set to OFF To set the Von modes, from the CONFIG menu, select Von and

38 Configure Protection Settings The electronic load has the following protection functions: Overvoltage protection (OVP), overcurrent protection (

39 5. It will then prompt to enter a value for Delay. This is the protection trip delay, which is the amount of time to delay from when the input

40 Software OPP - Users can set the electronic load’s software OPP value with the following steps. 1. Go to CONFIG menu and select Protect. Then p

41 Overtemperature Protection (OTP) There is an overtemperature protection circuit, which will turn off the input if the internal temperature excee

42 Configure Timed Input The load has a built-in timer function that can be configured to allow enabling (ON) the main input for a specified amount

43 3. To enable voltage auto range, select On and press . To disable, select Off and press to confirm the change. Measuring Rise and Fall Time

44 CR LED Function CR LED is a function that allows the instrument to simulate the loading behavior of typical LEDs, which can be used for testing

45 5. Use the numeric keypad or rotary knob to enter the values for Range, Voltage High, Voltage Low, and Vd. Vd will be the forward voltage of the

iv cord, remove the instrument from service, label it as not to be operated, and return the instrument to B&K Precision for repair. Notify B&

46 7. To enable remote sense, go to CONFIG menu and select Remote-Sense and press . 8. Select On to enable or Off to disable remote sense. The de

47 4. Connect the external analog control pins from the rear panel of the instrument to your voltage control source as shown below: Figure 13 - A

48 Disable (OFF) input: Disconnect the short between the two pins. Note: The external analog control does not have to be turned ON from the menu

49 3.6 Transient Operation Transient operation enables the module to periodically switch between two load levels, as might be required for testing

50 Figure 14 - Continuous Transient Operation Current Waveform Pulse In this mode, the electronic load generates a transient pulse of programmable

51 Figure 16 - Toggle Transient Operation To enable and setup transient mode, follow the steps below: 1. First, select the load’s mode of operat

52 4. Select the transient mode Continuous, Pulse, or Toggle. Press . 5. For CC mode, the following display will show. For all other modes,

53 11. The load will return to the Transient menu. Press to return to the normal display. The Trig annunciator will appear and the display will l

54 3.7 List Operation List mode lets you generate complex sequences of input changes with rapid, precise timing. This is useful when running test

55 Configure List Follow the steps below to configure list operation: 1. From the front panel, press and then . The following display will sho

v Hazardous voltages may be present in unexpected locations in circuitry being tested when a fault condition in the circuit exists. Fuse replacement

56 7. Press and it will prompt to enter the slew rate of the step. If High-Rate was selected earlier, units will be in A/us. Otherwise, it wil

57 Run List To run a list, follow the steps below: 1. From the List menu, select Recall and press . The load will prompt for the memory location

58 6. To disable list operation, first press to disable the input and then press and . Select Off and press to confirm. The Trig annunciato

59 6. Lastly, it will prompt to enter the Stop Timer. Use the numeric keypad or rotary knob to enter a time value in seconds. Then press to fin

60 the Automatic Test sequence, prior to running the automated test. Please see the Configure CC Parameters, Configure CV Parameters, Configure CR P

61 PROGRAM 9 Sequence 1 2 3 4 5 6 7 8 9 10 Save Group 81 82 83 84 85 86 87 88 89 90 PROGRAM 10 Sequence 1 2 3 4 5 6 7 8 9 10 Save Group 91 92 93 94

62 CC 1 A 1 CV 3 V 2 CW 0.5 W 3 CR 2 Ω 4 CC 3.8 A 5 CC 0.5 A 6 CV 2.8 V 7 Refer to section “Save/Recall Instrument Settings” in section “3.3 SYSTEM

63 indicating that they are active and will be run as part of the test program. In this example, the display will look like below: To deactivate,

64 5. Press to continue. The display will show the following: SEQ01 will be shown if sequence 1 is activated. Otherwise, it will display SEQX

65 0 ≤ Tpf ≤ (Ton+ T off) Tpf = P/F Delay Time Ton = On Time Toff = Off Time Use the numeric keypad or rotary knob to enter a value. Then press

vi Use correctly sized wires To connect the load to the power supply, use a wire diameter large enough to handle the maximum continuous output short

66 numeric keypad or rotary knob. Then press to confirm and save all settings to the selected program number. The display will not return to the

67 PRG01 from this display indicates which program has been loaded to run. Depending on which program is recalled, it will show PRG01-PRG10. STO

68 At this point, the program is in a pause state. To continue the test, press once. Note: At any time while the program is in the running sta

69 If there is a failure, fail will be indicated in place of pass. At this point, you can press to view which sequences were tested and passed/fail

70 Start Current This is the starting current value when OCP test begins. The settable range of this value is limited by Current Range. Step Curren

71 4. Follow the same steps for Current Range. The value must be within the maximum input limits of the load. Press to continue. 5. Set the St

72 3. Press to start the test. When the test is running, Run will be indicated in place of Stop. When the test ends, either Pass or Fault will

73 Delay. Step Delay This is the delay time to hold each power step in the test. This determines how fast or slow to run through the test. End Powe

74 6. Follow the same steps for Step Power and End Power. Pressafter each settings to continue. 7. Enter a value for OPP Voltage and press to co

75 3. Press to start the test. When the test is running, Run will be indicated in place of Stop. When the test ends, either Pass or Fault will

vii Compliance Statements Disposal of Old Electrical & Electronic Equipment (Applicable in the European Union and other European countries with s

76 4 Remote Operation 4.1 Interface Connection RS-232 For RS-232 connectivity, refer to the diagram below for pinout information. The RS-232 is

77 GPIB The load can be configured with a GPIB address from 0 – 31. To communicate via GPIB, connect a GPIB cable to the GPIB interface on the rear

78 5 Troubleshooting Guide Below are some frequently asked questions and answers. Please check if any apply to your instrument before contacting

79 If the instrument is damaged, appears to be damaged, or if any liquid, chemical, or other material gets on or inside the instrument, remove the

80 6 Specifications Note: All specifications apply to the unit after a temperature stabilization time of 15 minutes over an ambient temperature r

81 Models 8600 8601 8602 Transient Mode (CC mode) T1 & T2 1 20 µs – 3600 s / Resolution: 10 µs Accuracy 5 µs + 100 ppm Slew Rate

82 Notes: 1) Fast pulse trains with large transitions may not be achievable. 2) The slew rate specifications are not warranted but are descriptio

83 Dimensions and weight Model Dimensions (W x H x D) (excludes front and rear rubber bezels and side handle) Weight 8600 218 x 90 x 387 mm 4.5 kg 8

84 7 Calibration It is recommended that the instrument be returned to B&K Precision for service and periodic calibration to ensure the instru

85 Index AC input, 10 Automatic Test, 59 Constant Current, 18 Constant Power, 23 Constant Resistance, 22 Constant Voltage, 20 Firmware Version, 15