BK Precision VSP6020 Instruction Manual
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BK Precision VSP6020 Instruction Manual

BK Precision VSP6020 Instruction Manual

High power switching dc power supplies
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MODELS
VSP6020, VSP2050, VSP4030 & VSP12010
High Power Switching DC Power Supplies
Instruction Manual

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Summary of Contents for BK Precision VSP6020

  • Page 1 MODELS VSP6020, VSP2050, VSP4030 & VSP12010 High Power Switching DC Power Supplies Instruction Manual...

  • Page 2: Table Of Contents

    TABLE OF CONTENTS SECTION DESCRIPTION PAGE NO. TEST INSTRUMENT SAFETY GENERAL INFORMATION INSTALLATION OPERATING INSTRUCTION MAINTENANCE REMOTE INTERFACE CUSTOMER SUPPORT WARRANTY INFORMATION SERVICE INFORMATION...

  • Page 3: Test Instrument Safety

    Section 1 Test Instrument Safety WARNING Normal use of test equipment exposes you to a certain amount of danger from electrical shock because testing must sometimes be performed where exposed voltage is present. An electrical shock causing 10milliamps of current to pass through the heart will stop most human heartbeats.

  • Page 4: General Information

    Section 2 General information INTRODUCTION FEATURE MARKINGS INTERFACE SPECIFICATION ORDERING INFORMATION INTRODUCTION The VSP SERIES power supplies are designed to deliver power in constant voltage and constant current mode by switch mode conversion in sleek 1U high cabinet and in a 19’’ rack construction. This series comprises the two device soft switching technology that yields very high efficiency of conversion for dc-to-dc converter part.
  • Page 5 Some of the features of the power supply are listed below: FEATURES MAINS OPERATED, WITH WIDE INPUT RANGE. POWER FACTOR CORRECTED INPUT. ISOLATED D.C. OUTPUT. 1200-WATT OUTPUT POWER CONSTANT VOLTAGE OPERATION FROM 0 TO FULL-SCALE LEVEL. CONSTANT CURRENT OPERATION FROM 0 TO FULL-SCALE LEVEL. OVER VOLTAGE CONTROL FACILITY.
  • Page 6 SPECIFICATIONS Output Specification Model VSP6020* VSP2050* VSP4030* VSP12010* Power 1.2KW 1.2KW 1.2KW 1.2KW Output Voltage 0–60V 0–20V 0–40V 0–120V Output Current 0–20A 0–50A 0–30A 0–10A Ripple rms. (10Hz to 1MHz) <10mV <15mV <10mV <20mV Noise (10Hz to 20MHz) <45mVpp <45mVpp <45mVpp...
  • Page 7 19 x 2.13 x 20” (483 x 54 x 457mm) 2.6 ORDERING INFORMATION: MODEL NO DESCRIPTION VSP6020 60V, 20A power supply with opto-isolated analog interface and RS-232 VSP6020GPIB 60V, 20A power supply with opto-isolated analog interface and GPIB VSP4030 40V, 30A power supply with opto-isolated analog interfaceandRS-232...

  • Page 8: Installation

    Section 3 Installation INTRODUCTION UNPACKING INPUT POWER REQUIREMENTS SYSTEM CONFIGURATION INSTALLATION TEST EQUIPMENT REQUIREMENTS Introduction VSP series power supply is configured, calibrated and tested prior to shipment. This unit is therefore ready for immediate use upon receipt. The initial physical inspec- tions should be made to ensure that no damage has been sustained during shipment.
  • Page 9 Input Power Requirements The Model VSP power supply is configured at the factory to operate from 95-264 VAC at 47-63 Hz power line. System Configuration The Model VSP series power supply comes in ready to use fashion and does not require any configuration in the field for operation in the local mode.
  • Page 10 Test Equipment Requirements The following instruments will be required to test the complete installation of the unit. 1). A four and half digit or better digital multimeter for verifying the voltage and current output of the unit. 2). A 20 MHz dual channel oscilloscope for verifying the Ripple in Output of the Source. 3).

  • Page 11: Local Mode

    Fig 3.1a : CONNECTION DETAILS IN LOCAL & REMOTE INTERFACE LOCAL MODE SWITCH CONFIGURATION VPROGI VPIN (ON REAR PANEL) VPROGR AGND3 IPIN IPROGI IPROGR +12V AGND3 REMOTE ON/OFF AGND3 VPSET VMSET IPSET IMSET CS BUS CS BUS Output +VE Output +VE Output -VE Output -VE LOAD...

  • Page 12: Operating Instruction

    Section 4 Operating instruction INTRODUCTION FRONT PANEL DESCRIPTION REAR PANEL DESCRIPTION POWER ON CHECK OPERATING INSTRUCTIONS IN LOCAL MODE OPERATING INSTRUCTIONS IN ANALOG REMOTE INTERFACE OPERATING INSTRUCTIONS IN DIGITAL INTERFACE TRIP INDICATIONS INTRODUCTION The VSP series Model is a variable switch mode power supply to provide wide range of DC supply from 0 to full-scale specified voltage.
  • Page 13 FRONT PANEL DESCRIPTION Figure 4.1 shows layout of front panel. On the front panel following controls and indicators are provided. Main ON/OFF switch with neon indication. 3 digit display for Voltage/ Set Voltage/ Set Over Voltage indication 3 digit display for Current/ Set Current indication. 10 turn POT for voltage control.
  • Page 15 Sr. No. Description Sr. No. Description Input Line Cable Output Sense Terminals Input Fuse Analog Interface Connector Input R. F. Filter DIP switches for Analog Interface selection VSP-PFC-1.2KW-1103D, PCB Cooling Fans Input ON/OFF Switch SBC-IEB-0504A, PCB (For GPIB) Heat Sinks VSP-POT-IMON-0604A, PCB PFC Choke VSP-FPDAC CONV-0604A, PCB...
  • Page 16 4.3.1 LINE INPUT The mains input range is clearly indicated on rear panel. The unit comes stan- dard with a U.S. standard plug and a mains input rating of 95VAC to 265VAC, 50/60Hz. 4.3.2 INPUT FUSE This fuse protects the unit against short circuits and over loading. The 20A fuse of type ’F’...
  • Page 17 Pin no.14: N.C. Pin no.15: +12 V- Remote on/off relay supply +ve. Pin no.16: AGND3 - Common terminal for remote programming. Pin no.17: Remote On/Off - Remote on/off relay. Pin no.18: AMX- Output Current monitoring. (Factory set to 0 to 5 volts for full scale) Pin no.19: VMX - Output Voltage monitoring.
  • Page 18 OPERATING INSTRUCTIONS IN LOCAL MODE These are the instructions for operating the source in local mode. Initially after Power ON Unit work in local mode.In local mode the power supply can be controlled through front panel potentiometers. Also Refer to the settings of 8Way DIP Switch provided on rear panel to operate in Local mode.
  • Page 19 OPERATING INSTRUCTIONS IN ANALOG REMOTE INTERFACE The Remote analog interface is Provided to control the power supply with external analog signals.Before using the interface check the type of digital interface provided with the system. A slide switch no. 7 on 8 pin DIP switch array is provided at the rear panel to bypass digital and front panel pot controls.
  • Page 20 Refer figure 4.1b for external resistance programming 0 to 4.85kohms for full scale voltage and current . It also shows the load connections required in this mode. As shown in the figure for Voltage Control connect the resistance of 4.85 K ohms at pin 4 &...

  • Page 21: Maintenance

    Section 5 Maintenance INTRODUCTION PREVENTIVE MAINTENANCE SERVICE INFORMATION Introduction This chapter contains the problems that may occur in the field in the event of long use. The procedure to test the unit is explained under the proper section. The individual is advised to use the correct procedure provided for the purpose of operating the particular sequence to set proper voltages and current required to test the proper working of the unit.
  • Page 22 When the unit is not turning ON. Check if the power ON/OFF switch is turned ON. Check whether fuse mounted on the rear panel is OK? If fuse is good then check the power cord. Please make sure that the power cord connecting to the unit is properly connected. Please also check the mains switch.

  • Page 23: Remote Interface

    Section 6 Remote interface INTRODUCTION RS232C INTERFACE RS232C OPERATION IEEE-488 OPERATION INTRODUCTION TO SCPI LANGUAGE COMMAND SUMMARY MANDATORY COMMANDS INSTRUMENT COMMANDS IEEE-4888 COMPLIANCE INFORMATION 6.10 SRQ HANDLING DETAILS 6.11 ERROR MESSAGES & REPORTING 6.12 APPLICATION PROGRAM EXAMPLES Introduction VSP series power supplies are configured for either RS232C or GPIB as per the order placed (refer chapter 1 for ordering information).
  • Page 24 RS232C INTERFACE: The basic principle of RS232C operation is achieved by 3-wire interface. The 3-wire interface comprises of transmit pin (abbreviated as TXD), receive pin (abbre- viated as RXD) and a common ground pin (GND). TXD pin of host is connected to the RXD pin of the instrument and the RXD pin of the host is connected to the TXD pin of the instrument and the third line connects the GROUNDs of the two sides.
  • Page 25 6.3.1 RS232 Data Format One Start Bit 8 Data Bits No Parity Bit 1 Stop Bit 6.3.2 RS232 Connector Details On the rear panel of the unit, a 9 pin D-type male connector is provided for the RS232 communication. The DSR and DTR handshake lines are not used. But the interface cable which connects the COMM INTF on the instrument to the PC COM port (COM 1 or COM 2) should interconnect the RXD and the TXD line, such that the RXD input the instrument is the TXD output of the host controller or PC.
  • Page 26 6.3.3 INSTALLATION OF RS232 CARD The RS232 Interface (ISO_RS232_CONV-1103 Card) card may come already installed, if ordered. If this interface is to be installed later, the card can be mounted on the rear panel of the unit using L-clamp provided on the card itself & following cards &cables shall be provided along.
  • Page 27 6.3.4 RS232 Commands Following section deals with the commands set for RS232 interface. It specifies the syntax of each command, which reads the status of power supply or configures it to the requirements of users. NOTE: The command uses following notations <SP>...
  • Page 28 Command: VOLT: PROT<SP><NR.DATA><EOS> Description: Set Over Voltage Protection Limit of OUTPUT Function: This command sets the Over Voltage Protection Limit of the Power Supply output with the <NR.DATA> given in the command in Volts. The input VOLTAGE data is in Numeric Data format. Once this OVP limit is set, any time if the actual Output Voltage of the channel exceeds the OVP limit, the OUTPUT will be ‘TRIPed’.
  • Page 29 Command : STAT? <EOS> Description: Read Status Query. Function: This command reads the status of various events occurred in the system. The definition of events is given below Over voltage Trip Over Temperature Trip Power On event (Sets when unit is turn ON. The bit gets cleared after the quarry.) Internal Failure Always 1 (THIS STATUS BIT MAY BE CHANGED IN FUTURE)
  • Page 30 6.4.1 IEEE-488 Interface Configuration The IEEE-488 Interface is a parallel BUS for Communication in the Program- mable Instruments. Multiple instruments can be connected on the same BUS and can be hooked up to a single HOST controller or computer. In order that instruments from different manufacturers can be built into the same system, it was necessary that all interfaces be compatible.
  • Page 31 6.4.2 IEEE-488 Connector Details The instrument provides a standard 24 pin GPIB connector (marked as COMM INTF on the rear panel of the instrument) to connect it with the standard GPIB (IEEE- 488) bus. Refer FIG. 6.3 for connector types definition diagram. Description of the GPIB Signals is given below.
  • Page 32 6.4.3 IEEE-488 Operational Sequence Guidelines Most interface communication tasks require a sequence of coded mes- sages to be sent over the interface. It is recommended that a careful study of the available controller capabilities be made many of them assigning one programming instruction to these sequences.
  • Page 33 UNL = Unlisten SPE = Serial Poll Enable SPD = Serial Poll Disable SBN = Status Byte Negative, where BIT 6 = 0 (BIT 7 is the MSB) SBA = Status Byte Affirmative, where BIT 6 = 1 (BIT 7 is the MSB) 6.4.4 Installation procedure for GPIB interface option in the VSP series power Refer to the general assembly layout of the VSP series power supplies.
  • Page 34 f) Compile the project. g) Connect line input to the unit. Keep the front panel output ON/OFF switch in OFF position. Turn the unit on with the input ‘Line’ switch. h) Run CSPY to download program in flash memory of the controller. Press the RESET button in the window and exit from CSPY.
  • Page 35 Remove JP2,JP3, JP4 & JP5 From J3 of SBC-IEB Install JP1 From J2 Remove Jumper Link here. VSP-DPM-CONT To J7 To J5 To J1 of VSP-POT-IMON To J1 of INSTR-TO-GPIB 6.4.5 IEEE-488 Instrument Address Selection The instrument address is set manually using an eight way miniature switch near the interface connector on the rear panel.
  • Page 36 ADDRESS SWITCHES SWITCHES 5-BIT DECIMAL HEX CODE CODE A3 A2 TABLE 6.2 The Other three switches (A7 A6 A5) must be kept to 000 (ON, ON, ON).
  • Page 37 6.4.6 Special Notes For the Controller Software Writer This section will provide some valuable hints to the controller software program writer for interfacing this Programmable Unit, through the communication interface. Normal communication is in ASCII. The unit will accept both the lower case and upper case characters.
  • Page 38 13). Before sending the unit into talk mode it is also advisable to Flush out the controller’s data-in buffer by giving a dummy read. This is required because some controller can keep the last data latched into its data-in Buffer. 14).
  • Page 39 USING WHITESPACE You must use Whitespace characters, [tab], or [space] to separate a param- eter from a command keyword. Whitespace characters are generally ignored only in parameter lists. USING “?” COMMANDS The BUS controller may send commands at any time, but an SCPI instrument may only send responses when specifically instructed to do so.
  • Page 40 DISCRETE PARAMETERS: Discrete parameters are used to program settings that have a limited number of values (like BUS, EXTernal, NORmal, and INVerted). They have a short forms and a long form just like command keywords. You can mix upper case and lower-case letters.
  • Page 41 6.5.4 SCPI Status Model All SCPI instruments implement status registers in the same way. The status system records various instrument conditions in three register groups: The Status Byte register The Standard Event register and The Questionable Data register. The status byte register records high level summary information reported in the other register groups.
  • Page 42 SCPI STATUS SYSTEM...
  • Page 43 The Status Byte Register The status byte summary register reports conditions from other status registers.Query data that is waiting in the instrument’s output buffer is immediately reported through the “message available” bit (bit 4). Bits in the summary registers are not latched. Clearing an event register will clear the corresponding bits in the status byte summary register.
  • Page 44 TO INTERRUPT YOUR BUS CONTROLLER USING SRQ Send a bus device clear message. Clear the event registers with the *CLS (clear status) command. Set the *ESE (standard event register) & *SRE (status byte register) enable masks. Send the *OPC? (Operation complete query) command and enter the result to assure synchronization.
  • Page 45 Note: An error condition (standard event register bits 2,3,4 or 5) will always record one or more errors in the instrument’s error queue. Read the error queue using SYSTem: ERRor? The standard event register is cleared when: You send a *CLS (clear status) command. * You query the event register using the *ESR? (Event status register) command.
  • Page 46 BIT DEFINITIONS-QUESTIONABLE DATA REGISTER DESCRIPTION DECIMAL VALUE DEFINITION OVP trip Channel 1 Over Voltage Trip OT trip Channel 1 Over Temperature Trip OVP trip Channel 2 Over Voltage Trip OT trip Channel 2 Over Temperature Trip Always Set to 0 Not Used Always Set to 0 Not Used...
  • Page 47 SR NO. IEEE-488.2 COMMON COMMANDS *CLS *ESE<SP><NR.DATA> *ESE? *ESR? *IDN? *OPC *OPC? *RST *SRE<SP><NR. DATA> *SRE? *STB? *TST? *WAI SR NO. STATUS REPORTING COMMANDS SYSTem: ERRor? STATus: QUEStionable: EVENt? STATus: QUEStionable: ENABle? STATus: QUEStionable: CONDition? STATus :QUEStionable:ENABle<SP><NR.DATA> STATus: OPERation: EVENt? STATus: OPERation: ENABle? STATus: OPERation: CONDition? STATus:OPERation:ENABle<SP><NR.DATA>...
  • Page 48 NOTE: <SP> = Null or space character (20H) <AARD> = Arbitrary ASCII Response Data <NR.DATA> = Numeric Data <EOS> = End of string character (OAH) <Channel_list> = Channel Number operation. The format for giving the channel list is (@1) : Channel number 1 (@1,2) : Channel nos.
  • Page 49 MANDATORY COMMANDS This section explains in detail the IEEE-488.2 and SCPI MANDATORY common commands, which are supported by this Programmable Instrument. NOTE: <SP> = Null or space character (20H) <AARD> = Arbitrary ASCII Response Data <NR.DATA> = Numeric Data <EOS> = End of string character (OAH) <Channel_list>...
  • Page 50 Command *IDN? Identification Query Description : This query command will read back the specific informa- Function tion about device. There are 4 fields in the response sepa- rated by commas. Field 1: Manufacturer (DEL) Field 2: Model number (XXXXXXX) Field 3: Serial number (0 if not available) Field 4: Version number (XX.YY) Command *OPC...
  • Page 51 Command *SRE? Service Request Enable Query. Description : This query command reads back the contents of the Ser- Function vice Request Enable Register in the <NR.DATA> Numeric data format (0-255). Command *STB? Read Status Byte Query. Description : This query command reads back the contents of the Sta- Function tus Byte Register in the <NR.DATA>...
  • Page 52 Command STATus:QUEStionable:EVENt? Status Questionable Event Register Query. Description : This query command returns the <NR.DATA> format (0- Function 32767) value of the Questionable Event Register, (16 bit register) specific to instrument, to give the reason for Er- ror. After this QUERY reads the register, the contents of the Status Questionable Data Event Register are cleared.
  • Page 53 Command STATus:OPERation:ENABle? Read Status Operation Enable Register Query. Description : This query command reads the contents of the Status Op- Function eration Enable Register, in the <NR.DATA> (0-32767) for- mat, whose corresponding HEX value represents the bit pat- tern of the Register. Command STATus:OPERation:CONDition? Read Status Operation condition register query.
  • Page 54 NOTE: <SP> = Null or space character (20H) <AARD> = Arbitrary ASCII Response Data <NR.DATA> = Numeric Data <EOS> = End of string character (OAH ) <Channel_list> = Channel Number operation. The format for giving the channel list is (@1) : Channel number 1 (@1,2) : Channel nos.
  • Page 55 Volts. The input VOLTAGE data is in Numeric Data for- mat. The <Channel_list> above, indicates for which all CHANNELS the DATA has to be SET. The same data will be set on all the specified CHANNEL(S). If no such <Channel_list> is provided the SOURce command will always SET to channel 1.
  • Page 56 indicates for which all CHANNELS the LIMIT has to be SET. The same data will be set on all the specified CHANNEL(S). Once this limit is set, from that point onwards the output voltage can not be set to higher values than this. If you try to set higher value using SOURce:VOLTage command, the “...
  • Page 57 Command OUTPut[:STATe]<SP>ON <Channel_list> Set the Output relay to ON state for the specified channels. Description : This command is used to switch on the output relay & thus to Function make the OUTPUT available at the output terminals. Command OUTPut[:STATe]<SP>OFF<Channel_list> Set the Output relay to OFF state for the specified channels.
  • Page 58 IEEE-488 INTERFACE COMPATIBILITY : Although the IEEE-488 Interface specification is called a standard, variations in implementation within the specifications are permitted. These variations determine the capabilities of the particular interface and a list of abbreviations are defined in the Stan- dard Document to indicate to the User which Interface capabilities have been designed in.
  • Page 59 BIT DEFINITIONS-SERVICE REQUEST ENABLE (SRE) REGISTER DESCRIPTION DECIMAL VALUE DEFINITION Always write with 0. Not Used Always write with 0. Not Used Questionable Data If this bit is set, an SRQ will be raised when one or more bits are set in the Questionable Data register (bits must be “enabled”...
  • Page 60 To read the Status Byte Summary Register, send the IEEE-488 Serial Poll Mes- sage. Querying the Summary Register will return a Decimal value, which corresponds, to the binary - weighted sum of the bits, set in the register. Serial Poll will automatically clear the “...
  • Page 61 No method is available to read the error queue from the front panel menu. The error queue is cleared when power has been off or after a *CLS (clear sta- tus) command has been executed. To read the error queue from the remote interface, send query as: SYSTem:ERRor? Errors have the following format (the error string may contain up to 40 charac- ters):...
  • Page 62 EXECUTION ERRORS Message: -200,”Execution error” A valid command could not be executed because of the unrecoverable TRIP condition in the related channel(s) or the numeric data given in the command exceeds the maximum allowed hard limits or the Soft Upper Limits which were set by the Limit commands.
  • Page 63 Fig 4.1a REMOTE VOLTAGE AND CURRENT PROGRAMMING AND MONITORING Factory Set for 0 to 5 Volts for full scale output programming and monitoring VPROGI External Voltage Control VPIN Input + VPROGR Control Common AGND3 External Voltage Control IPIN Input + IPROGI IPROGR SWITCH CONFIGURATION...
  • Page 64 Fig 4.1b EXTERNAL RESISTANCE PROGRAMMING 0 TO 4.85KOHMS FOR FULL SCALE VOLTAGE & CURRENT Ext. Resistance for VPROGI voltage control VPIN VPROGR AGND3 Control Common IPIN Ext. Resistance for IPROGI voltage control IPROGR +12V SWITCH CONFIGURATION AGND3 (ON REAR PANEL) REMOTE ON/OFF AGND3 for Resistance...

  • Page 65: Customer Support

    Section 7 Customer support B&K Precision offers courteous, professional technical support before and after the sale of their test instruments. The following services are typical of those available from our toll-free tele- phone number. 1-800-462-9832 Technical advice on the use of your instrument. Technical advice on special applications of your instrument.

  • Page 66: Warranty Information

    Section8 Warranty information Limited One-Year Warranty B&K Precision 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 from an authorized B&K Precision distributor. B&K Precision will, without charge, repair or replace, at its option, defective product or com- ponent parts.

  • Page 67: Service Information

    Section9 Service Information Warranty Service: Please go to our website, www.bkpreicsion.com & click on the service/ repair button to obtain an RMA #. Return the product in the original packaging with proof of purchase to the address below. Clearly state in writing the performance problem and return any leads, probes, connectors and accessories that you are using with the device.
  • Page 68 22820 Savi Ranch Parkway Yorba Linda, CA 92887 TEL: 714-921-9095 PN: 481-529-9-001 FAX: 714-921-6422 Printed in India Ó 2004 B&K Precision Corp. www.bkprecision.com...

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Vsp2050Vsp4030Vsp12010

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