BK Precision 9240 Series User Manual
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BK Precision 9240 Series User Manual

Multi-range dc power supplies
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Summary of Contents for BK Precision 9240 Series

  • Page 2 Safety Summary The following safety precautions apply to both operating and maintenance personnel and must be followed during all phases of operation, service, and repair of this instrument. Before applying power to this instrument: • Read and understand the safety and operational information in this manual. •...
  • Page 3 You must ensure that each accessory you use with this instrument has a category rating equal to or higher than the instrument’s category rating to maintain the instrument’s category rating. Failure to do so will lower the category rating of the measuring system. Electrical Power This instrument is intended to be powered from a CATEGORY II mains power environment.
  • Page 4 • In environments with restricted cooling air flow, even if the air temperatures are within specifications. • In direct sunlight. This instrument is intended to be used in an indoor pollution degree 2 environment. The operating temperature range is C to 40 C and 20% to 80% relative humidity, with no condensation allowed.
  • Page 5 Fuse replacement must be done by qualified service-trained maintenance personnel who are aware of the instrument’s fuse requirements and safe replacement procedures. Disconnect the instrument from the power line before replacing fuses. Replace fuses only with new fuses of the fuse types, voltage ratings, and current ratings specified in this manual or on the back of the instrument.
  • Page 6 Symbol Description Indicates a hazardous situation which, if not avoided, will result in death or serious injury. Indicates a hazardous situation which, if not avoided, could result in death or serious injury Indicates a hazardous situation which, if not avoided, will result in minor or moderate injury Refer to the text near the symbol.

  • Page 7: Table Of Contents

    Contents Introduction Product Overview Contents Features Dimensions Rackmount Installation Front Panel Display Rear Panel Getting Started Input Power and Fuse Requirements Fuse Requirements Check or Replace Fuse Preliminary Check Self test Errors Basic Front Panel Operation Keys 3.1.1 Function Keys 3.1.2 Soft Keys 3.1.3...
  • Page 8 Battery Charge Function Charge Test 6.1.1 Start/Stop Test 6.1.2 Save/Load Profile 6.1.3 V Full 6.1.4 I Limit 6.1.5 I End 6.1.6 End Delay Battery Test Settings 6.2.1 Sampling Time 6.2.2 A-h On/Off 6.2.3 W-h On/Off 6.2.4 Trigger Source 6.2.5 File Path 6.2.6 T.
  • Page 9 10 Save/Recall 10.1 Save the Output Settings 10.2 Recall the Instrument’s Settings 10.3 Power-On Settings 10.4 Screenshot 11 Calibration Adjustment Procedure 11.1 Voltage Calibration Adjustment 11.2 Current Calibration Adjustment 11.3 OVP Calibration Adjustment 11.4 OCP Calibration Adjustment 11.5 RTC Calibration Adjustment 12 Performance Verification 13 Specifications 14 Service Information...

  • Page 10: Introduction

    9241: 60 V / 4 A / 120 W Figure 1.1 Front View The 9240 series multi-range DC power supplies combine industry-leading power density and performance with an extensive set of features in a compact 2U form factor. The series produces 120/200 W of clean power with exceptionally low ripple and noise characteristics. An advanced list mode programming, data logging, battery charging and protection features make these power supplies suitable for a wide range of benchtop or test system applications.

  • Page 11: Features

    • LabVIEW , IVI-C, and IVI.NET drivers provided �� �� 1.4 Dimensions The 9240 Series dimensions are approximately: 213 mm (8.4 in) x 88.2 mm (3.47 in) x 330 mm (13 in) (W x H x D). Figure 1.2 Dimensions...

  • Page 12: Rackmount Installation

    Introduction 1.5 Rackmount Installation The 9240 Series is compatible with the optional 19-inch rackmount kit model RK2US. The RK2US installation instructions can be downloaded from bkprecision.com Figure 1.3 Dimensions...

  • Page 13: Front Panel

    Introduction 1.6 Front Panel The front panel interface allows for control of the unit. Figure 1.4 Front Panel Item Name Description Power Button Power the instrument ON or OFF Function Keys section 3.1.1 for details. USB Host Port USB port used to connect flash drives. Display Visual presentation of the device function and measurements.

  • Page 14: Display

    Introduction 1.7 Display Icon Description The output is disabled. The output is enabled and in constant voltage mode The output is enabled and in constant current mode Data loggin is enabled but not recording. Data logging is enabled and recording. The instrument is connected to a network.

  • Page 15: Rear Panel

    Introduction 1.8 Rear Panel Figure 1.5 Rear Panel Item Name Description Rear panel output with remote sense. Internal relays switch between local and Output/Sense remote sensing. Lock the instrument to a fixed location using the security lock via the lock hole. Kensington security slot Lock is not included.

  • Page 16: Getting Started

    Getting Started Before connecting and powering up the instrument, please review and go through the instructions in this chapter. 2.1 Input Power and Fuse Requirements The supply has a universal AC input that accepts line voltage input within: 9240 9241 9242 AC Line Input 100 - 240 VAC ±...

  • Page 17: Fuse Requirements

    Getting Started 2.2 Fuse Requirements An AC input fuse is necessary when powering the instrument. The below table shows the fuse required for all models. Model Fuse Specification 9240 3.15 AT, 250 V 9241 3.15 AT, 250 V 9242 4 AT, 250 V 2.3 Check or Replace Fuse For safety, no power should be applied to the instrument while changing line voltage operation.
  • Page 18 Table 2.1 Wire Gauge Rating Output Isolation The output terminals of the 9240 Series are isolated from earth ground. An earth ground terminal is provided on the front panel for convenience. Any output terminal may be grounded. However, output terminals must not exceed ±200 VDC.

  • Page 19: Preliminary Check

    Getting Started 2.4 Preliminary Check Complete the following steps to verify the Power supply is ready for use. Verify AC Verify and check to make sure proper AC voltages are available to power the instrument. Input Voltage The AC voltage range must meet the acceptable specification as explained in section “2.1 Input Power and Fuse Requirements”.

  • Page 20: Self Test Errors

    Getting Started Note: The initial power on state is based on the settings set on Power-ON 2.5 Self test Errors The following errors will be displayed if the self-test did not complete successfully: Error Message Description EEPROM Fail The internal EEPROM is corrupted or damaged. System Lost Last system settings within the EEPROM are lost.

  • Page 21: Basic Front Panel Operation

    Basic Front Panel Operation At power-on, the power supply will automatically enter the front-panel operation mode and the instrument can be controlled via the front panel keys and knob. 3.1 Keys 3.1.1 Function Keys There are three main keys: Navigates the 2 available screens. Opens up a menu giving access to Opens the main menu bar.

  • Page 22: Output Control

    Basic Front Panel Operation Figure 3.2 Numeric Keys 3.1.4 Output Control button toggles the output On/Off. When output is enabled, the ON button will turn green and the supply will display the state of the channel. represents constant current mode. represents constant voltage mode.

  • Page 23: Display

    Basic Front Panel Operation 3.2 Display The power supplies have two main display modes: output overview and live output monitoring display. Press the button to cycle between the different display modes or to return home when viewing any other menu. Output Overview Provides information of the outputs’: Allows configuration of:...
  • Page 24 Basic Front Panel Operation Live Output Monitoring The live output monitoring display shows metered output voltage and current over time. It is always active and will continuously plot and overwrite the oldest value when the display graph is full. Figure 3.4 Live Output Monitoring Display The Live output display can be configured by setting the: Voltage, Current, and Time Scale.

  • Page 25: Check Model And Firmware Version

    Basic Front Panel Operation Voltage Offset A voltage offset can be added. The offset can be set from 0 V up to 32.2 V on the 9240 and 0 V up to 60.6 V on the 9241/9242. 1. While in Live Output Display use the softkeys to select Voltage Offset. 2.

  • Page 26: Output Configuration

    Output Configuration 4.1 Protection Settings 4.1.1 Over Voltage Protection (OVP) Over voltage protection is always enabled, however the user can set the OVP voltage limits. 1. Press the button then use the soft keys to select Output config > Protection settings 2.

  • Page 27: Protection Clear

    Output Configuration 4.1.5 Protection Clear Protections are cleared from the output configuration settings as shown in the following steps. 1. Press the button then use the soft key to select Output config > Protection Clear. 2. Press the soft key to clear the triggered protections. 4.2 Output Settings 4.2.1 Remote Sense Remote sense can be used to compensate for voltage drops (up to 1 V) due to resistance from test leads connected to...

  • Page 28: Output Timer

    Output Configuration DO NOT at any time disconnect the wires from the S+ and S- terminals to the DUT while output is enabled (ON). Doing so may damage the power supply and cause unstable output. Remote sense is disabled by default, to enable remote sense: 1.

  • Page 29: On/Off Delay

    Output Configuration 4.2.5 On/Off Delay A channel on or off delay in seconds can be applied to any channel. These delays can be set from 0.001 s to 3600.0 s. 1. Press the button then use the soft key to select Output config > Output Settings. 2.

  • Page 30: List Mode

    List Mode The 9240 series is capable of storing up to 10 programmable lists in the internal memory. Each list can have up to 100 configurable steps. If all ten list numbers are taken, a list can also be saved to a USB drive. Lists can be loaded from a USB drive, allowing for a larger collection of programmed lists.
  • Page 31 List Mode Pace: Set the pace in which steps are executed. a. Dwell: The next step outputs once the dwell time elapsed. b. Trigger: After the dwell time elapsed, wait for a trigger before outputting the next step. Trigger Source Set the trigger source.

  • Page 32: Edit List

    List Mode Note: If the list is aborted, the output will return to the last set voltage and current output values before the list began, even if After List is set to Last. 5.2 Edit List Press the button then use the soft key to select List Setup > Edit List. Use the softkeys to set the following parameters.

  • Page 33: List Number

    List Mode Load from USB Load a previously saved list from a USB to selected List Number. Use the rotary knob to navigate through the file paths of the USB. Use the button to expand folders. Once the desired location has been found select Load by pressing the softkey furthest to the left. Figure 5.4 Load from USB Note: The list must be saved/overwritten at the selected list number location before it is able to be assigned.

  • Page 34: Repeat

    List Mode 5.2.3 Repeat To repeat a list, set Repeat using the numeric keypad or rotary knob and press 5.2.4 Steps Add, delete, clear all, or edit steps. Add Step Use the softkeys to add a step to the list. The step added will be a duplication of the step selected before pressing Add Step.
  • Page 35 List Mode Edit Step Use the rotary knob to navigate the steps available.(select a row) To edit parameters of the step, use the keys.(selects a column) See figure for the parameter each row edits. Press to toggle enable/disable BOST and/or EOST. Figure 5.6 List Configuration Description Step Parameters...

  • Page 36: List Run

    List Mode 5.3 List Run Before running a list its parameters must be configured. 1. Configure the parameters of each step. See 2. Set the settings of the channel which will output the list. See a. Enable on desired channel. List State b.
  • Page 37 List Mode – The interaction with the list will vary depending on the chosen Pace. See 5. Select List Abort to end the list before all steps elapse. If the all steps elapse the list will end and the output will be set to chosen After List parameter.

  • Page 38: Battery Charge Function

    Battery Charge Function The Battery Charge Function can be configured to set the desrired charging parameters. 6.1 Charge Test Press the button then use the soft key to select List/Battery > Batt Test Setup > Charge Test. Figure 6.1 List Setup Use the softkeys to select one of the available functions/parameters.

  • Page 39: Full

    Battery Charge Function – Use the corresponding softkey to select the Save to USB or Load from USB function. – Use the rotary knob and the key to navigate through the file path of the USB. Once the desired location has been found select Save or Load by pressing the softkey furthest to the left.

  • Page 40: I End

    Battery Charge Function 6.1.5 I End Set a current limit value to interprertrated as the stop charging value of the battery. – Use the numeric keypad or the rotary knob to enter or adjust the I End value. – Press the to set the I End value.

  • Page 41: Trigger Source

    Battery Charge Function 6.2.4 Trigger Source Press the button then use the soft key to select List/Battery > Batt Test Setup > Batt Test Settings > Trigger Source. Datalog can be triggered in three ways: Manual, Digital IO, and Remote. •...

  • Page 42: Stamp Filename

    Battery Charge Function 6.2.6 T. Stamp Filename Press the button then use the soft key to select List/Battery > Batt Test Setup > Batt Test Settings > Next Pg. > T. Stamp File. Press the corresponding softkey to toggle stamp filename. Example Enabled 9240_log_20201017002307 Disabled 9240_log...

  • Page 43: Stop Ah

    Battery Charge Function 6.3.3 Stop Ah Set a Ah stop time. Press the button then use the soft key to select List/Battery > Batt Test Setup > Fail Safe Settings > Stop Ah. – Use the numeric keypad or rotary knob to set the desired stop time. (0 to 9999.99 s) –...

  • Page 44: Data Logger

    Data Logger The data logger can record the output voltage, current, and the error codes. The Data Logger can be configured to record either Voltage only, Current only, or both. Connect a USB flash drive to the front panel USB port. Max. Recording time will vary based on the flash drive size and the amount of the data being logged.

  • Page 45: Parameters

    Data Logger 7.2 Parameters 7.2.1 Sampling Interval Press the button then use the soft key to select Data logger > Sampling Interval. Use the numeric keypad or rotary motor to select the sampling interval. Press to assign the selected value. (.2s to 300s) 7.2.2 File Path Press the...

  • Page 46: Log Data

    Data Logger 7.2.4 Log Data Press the button then use the soft key to select Data logger > Next Pg. > Log Data. Select data to be logged. – All: Record both voltage and current. – Voltage: Record the voltage. –...

  • Page 47: Status Code

    Data Logger 7.2.5 Status Code Press the button then use the soft key to select Data logger > Status Code. Toggle to enable/disable status code. Enabled Status Code will record all codes reported. See for an example. In figure the code 0x0001 is returned. This indicates OVP has been triggered. Table defines each code.

  • Page 48: Utilities Menu

    Utilities Menu Configure the settings in the following menus: • User Settings • Remote Interface • I/O Configuration • Test/Admin • Error Log • Help 8.1 User Settings Press the button then use the soft key to select Utilities > User Settings. The system’s settings can be configured here.

  • Page 49: Time

    On Screen Help see section 8.2 Remote Interface The 9240 series supports remote communication on up to three interfaces: USB, LAN, and GPIB (optional). While in remote mode the screen displays “RMT” in the upper right corner. Switching to remote mode does not impact the supply’s output parameters.

  • Page 50: Usb Settings

    Utilities > I/O Config > USB Settings. The USB device port is located in the rear-panel. See The 9240 series are both USBTMC and USB VCP compliant. In the USB Settings menu use the soft keys to select either: –...

  • Page 51: Lan

    Utilities Menu 8.2.2 LAN To configure the LAN Settings Press the button then use the soft key to select Utilities > I/O Config > LAN Settings. The following settings are available in LAN Settings: • IP Mode • IP Address •...
  • Page 52 Utilities Menu Subnet Mask Subnet Mask divides the IP address into network address and host address. To set Subnet Mask: Press the button then use the soft key to select Utilities > I/O Config > LAN Settings > Subnet Mask. Use the numeric keypad to enter the subnet mask.
  • Page 53 Utilities Menu LAN Reset LAN Reset resets all LAN settings and webpage passwords. To reset LAN : Press the button then use the soft key to select Utilities > I/O Config > LAN Settings > LAN Reset . Before resetting a warning will display informing both LAN settings and webpages passwords will be reset. Figure 8.4 Reset Select Yes to finalize the reset.
  • Page 54 Utilities Menu Restore Default Restore Default will set all LAN settings to their factory defaults. To restore factory defaults: Press the button then use the soft key to select Utilities > I/O Config > LAN Settings > Restore Default . Before restoring LAN settings to default the following warning will display.
  • Page 55 Utilities Menu LAN Status LAN Status provides an overview of the LAN settings. To view the LAN status: Press the button then use the soft key to select Utilities > I/O Config > LAN Status . Figure 8.6 LAN Status...

  • Page 56: Gpib (Optional)

    Utilities Menu 8.3 GPIB (optional) In GPIB the GPIB address can be changed from 01 to 30. To change the GPIB address: Press the button then use the soft key to select Utilities > I/O Config > GPIB. Figure 8.7 GPIB Address Use the numeric keypad to enter the new address, then press the key.

  • Page 57: Digital I/O

    Utilities Menu 8.4 Digital I/O To enter the Digital I/O menu: Press the button then use the soft key to select Utilities > I/O Config > Digital I/O. Select the function and polarity of pins: 1, 2, and 3. • Pin Functions •...

  • Page 58: Polarity

    Utilities Menu Digital In Toggle to select In/Out digital function. Digital In: Receive a signal from external device. Digital Out: Send a signal to external device. The input voltage range for digital I/O pins is 0 V to 5 V. To prevent damage to the instrument, do not exceed 5 V or supply a negative voltage to the digital I/O pins.

  • Page 59: Inhibit Mode

    Utilities Menu 8.4.1 Inhibit Mode Receive an external input signal that controls the output state. Default: Off To set Inhibit Mode: 1. Assign the inhibit In function to pin 3 by: Press the button then use the soft key to select Utilities > I/O Config > Digital I/O > Pin 3 > Inhibit 2.

  • Page 60: Test/Admin

    Utilities Menu 8.5 Test/Admin 8.5.1 Self Test Run a Module test. Press the button then use the soft key to select Utilities > Test/Admin > Self-Test > Start. Figure 8.9 Self Test Complete 8.5.2 Security The Security Settings are locked and can be accessed by entering the default code 77416699. Figure 8.10 Security Locked Note: The default password can be change in the Change Code menu.
  • Page 61 Utilities Menu Use the password to gain access to the following settings. • Change Code • Calibrate • Firmware Update • NISPOM • Lock Change Code Changes the security code. Press the button then use the soft key to select Utilities > Test/Admin > Security > Change Code. Calibrate Enter calibration mode.

  • Page 62: Error Log

    Utilities Menu If Done is selected without locking the security settings, the user will be prompted that the security settings will not be locked. 8.6 Error Log View up to 50 previously set error codes. Press the button then use the soft key to select Utilities > Error Log. Figure 8.11 Error Log Errors are placed in the order that they were encountered.

  • Page 63: Help

    Utilities Menu 8.7 Help To enter the Help menu: Press the button then use the soft key to select Utilities > Help. Figure 8.12 Help Menu Use the rotary knob to navigate the help options shown in figure 8.12. To select the Quick help topic press the key or press the Select softkey.

  • Page 64: Key Lock

    Key Lock Lock all front panel keys including Press the button then use press and hold the soft keys Key Lock for 3 seconds. Figure 9.1 Key Lock If Key Lock Output is enabled, holding Key Lock for 3 seconds locks all front panel keys except See section to enable/disable Key Lock Output.

  • Page 65: Save/Recall

    Save/Recall Save/Recall the instruments Output Settings and Power-On Settings. 10.1 Save the Output Settings Save to Internal Memory Save the instrument’s output settings to the internal memory. A total of 10 (0 to 9) output settings can be saved. To save the output settings : Press the button then use the soft keys to select Save >...

  • Page 66: Recall The Instrument's Settings

    Save/Recall Figure 10.2 Save to USB 10.2 Recall the Instrument’s Settings Recall previously saved output settings from the internal memory. A total of 10 (0 to 9) user settings can be saved. To recall settings : Press the button then use the soft keys to select Recall > Recall from INT. Use the numeric keypad to enter a number from 0 to 9 to recall the output settings stored in that address.

  • Page 67: Power-On Settings

    Save/Recall Use the rotary knob to navigate through the file paths of the USB. Use the button to expand folders. Once the desired location has been found press Load. The settings will be recalled after a short delay. Figure 10.4 Recall from USB 10.3 Power-On Settings Load previously saved output parameters on power-on.

  • Page 68: Screenshot

    Save/Recall Default Values and Ranges Set the instrument’s output settings to default. Press the button then use the soft keys to select Set to Default. 9240 9241 / 9242 Parameter Unit Default Default VSET 32.32 60.6 ISET 8.08 .015 4.04 / 10.01 .015 Vmax 32.32...

  • Page 69: Calibration Adjustment Procedure

    Calibration Adjustment Procedure Calibration Interval The recommended calibration interval for the 9240 series is one year. To enter the Calibration Menu: Press the button, then use the soft key to select Utilities > Test/Admin > Security > Calibrate. In the Calibration Menu use the softkeys to select a parameter from the menu to calibrate.

  • Page 70: Voltage Calibration Adjustment

    Calibration Adjustment Procedure 11.1 Voltage Calibration Adjustment For the voltage calibration procedure a precise DMM will be needed. To adjust the voltage calibration: 1. Enter the Calibration Menu • Press the button, then use the soft key to select Utilities > Test/Admin > Security. Use the numeric keypad to enter security code.

  • Page 71: Current Calibration Adjustment

    Calibration Adjustment Procedure 11.2 Current Calibration Adjustment For the current calibration procedure a precise DMM will be needed. To adjust the current calibration: 1. Enter the Calibration Menu • Press the button, then use the soft key to select Utilities > Test/Admin > Security. Use the numeric keypad to enter security code.

  • Page 72: Ovp Calibration Adjustment

    Calibration Adjustment Procedure 11.3 OVP Calibration Adjustment For the over voltage protection calibration the instrument’s voltage must be calibrated. To adjust the OVP calibration: 1. Enter the Calibration Menu • Press the button, then use the soft key to select Utilities > Test/Admin > Security. Use the numeric keypad to enter security code.

  • Page 73: Ocp Calibration Adjustment

    Calibration Adjustment Procedure 11.4 OCP Calibration Adjustment For the over current protection calibration the instrument’s current must be calibrated. To adjust the OCP calibration: 1. Enter the Calibration Menu • Press the button, then use the soft key to select Utilities > Test/Admin > Security. Use the numeric keypad to enter security code.

  • Page 74: Rtc Calibration Adjustment

    Calibration Adjustment Procedure 11.5 RTC Calibration Adjustment To adjust the Real-Time Clock(RTC) calibration: 1. Enter the Calibration Menu • Press the button, then use the soft key to select Utilities > Test/Admin > Security. Use the numeric keypad to enter security code. See the subsection Security. Press the button to enter the security menu.

  • Page 75: Performance Verification

    Performance Verification Performance verification ensures the instrument will meet specifications listed in the datasheet. Load regulation can be tested for both the front and rear outputs. Note: All specifications apply to the unit after a temperature stabilization time of 15 minutes over an ambient temperature range of 23 °C ±...
  • Page 76 Performance Verification 5. Set the electronic load settings to the stated values in table 12.1. 6. Enable remote sense. See section Remote Sense. 7. Enable the channel output. 8. Enable the electronic load. Monitor the power supply to ensure it remains in CV mode.If the power supply switches to CC slightly lower the current on the electronic load until the power supply return to CV mode.
  • Page 77 Performance Verification 5. Set the electronic load settings to the stated values in table 12.1. 6. Enable remote sense. See section Remote Sense. 7. Enable the channel output. 8. Enable the electronic load. Monitor the power supply to ensure it remains in CV mode.If the power supply switches to CC slightly lower the current on the electronic load until the power supply return to CV mode.

  • Page 78: Specifications

    Specifications...
  • Page 79 Specifications Model 9240 9241 9242 Output Rating Voltage 32 V 60 V Current 10 A Maximum Output 120 W 200 W Load Regulation ± (% output + offset) Voltage ≤0.01% + 3 mV Current ≤0.1% + 3 mA Line Regulation ± (% output + offset) Voltage ≤0.01% + 3 mV Current...
  • Page 80 Specifications General Remote Sense Compensation Command 10 ms Response Time 0.98 / 115 VAC Power Factor 0.94 / 230 VAC USB (USBTMC & USBVCP), LAN (1.5 LXI device I/O Interfaces specification 2016), GPIB (optional) 100 VAC to 240 VAC ± AC Line Input 10%, 47 Hz to 63 Hz Maximum Rated Input...

  • Page 81: Service Information

    Service Information Warranty Service: Please go to the support and service section on our website at bkprecision.com to obtain an 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.

  • Page 82: Limited Three-Year Warranty

    LIMITED THREE-YEAR WARRANTY B&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 three years from date of purchase. B&K Precision Corp. will, without charge, repair or replace, at its option, defective product or component parts. Returned product must be accompanied by proof of the purchase date in the form of a sales receipt.

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