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5.1

INTRODUCTION

5.2

PREVENTIVE MAINTENANCE

5.3

SERVICE INFORMATION

5.1

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.

This unit has few boards and interconnections and the reliability is very

high. However, if a failure occurs the user himself might be able to fix the unit by
following the remedies given under particular complaint.

Read the manual completely in order to understand your unit better.

5.2

Preventive Maintenance

Please follow the following preventive steps to ensure the proper operation of your
instrument.

* Allow enough natural cooling (ventilation) around the unit.

* Avoid keeping tools, equipment etc. on the top cover.

* Keep the working area neat and clean always.

* Do not exceed the input/output limits at any time.

5.3

Complaints and Service Information

Some of the common problems that may occur and the remedy to put back

the instrument back in to a working condition as fast as possible are given below:

Section 5

Maintenance

Содержание VSP12010

Страница 1: ...MODELS VSP6020 VSP2050 VSP4030 VSP12010 High Power Switching DC Power Supplies Instruction Manual...

Страница 2: ...DESCRIPTION PAGE NO 1 TEST INSTRUMENT SAFETY 1 2 GENERAL INFORMATION 2 3 INSTALLATION 6 4 OPERATING INSTRUCTION 10 5 MAINTENANCE 19 6 REMOTE INTERFACE 21 7 CUSTOMER SUPPORT 63 8 WARRANTY INFORMATION 6...

Страница 3: ...ac powered equipment remember that ac line voltage is usually present on some power input circuits such as the on off switch fuses power transformer etc any time the equipment is connected to an ac ou...

Страница 4: ...lated analog voltage current and resis tance programming with built in isolation amplifiers It gives the option to monitor the isolated signals with the option to change either from 0 to 5 Volts or fr...

Страница 5: ...LTI TURN POTENTIOMETERS FOR V O V AND I SET FRONT PANEL OUTPUT TERMINALS FOR MONITORING SLEEK 1U HIGH 19 INCH RACK CONSTRUCTION INTERNAL FORCED AIR COOLING WITH ZERO STACKING ISOLATEDANALOG VOLTAGE CU...

Страница 6: ...n mV 0 1 of F S spec for all VSP models CV Load Regulation mA 0 1 of F S spec for all VSP models CC Load Regulation mA 0 1 of F S spec for all VSP models Output Specification Stability 0 05 Efficiency...

Страница 7: ...approx 13 7lbs 6 2 KG Dimensions WxHxD 19 x 1 75 x 18 483 x 44 5 x 457mm Dimensions with rubber feet 19 x 2 13 x 20 483 x 54 x 457mm 5 2 6 ORDERING INFORMATION MODEL NO DESCRIPTION VSP6020 60V 20A pow...

Страница 8: ...age should be noted on the carrier s receipt and signed by the driver or carrier agent Save all shipping containers and material for inspection Forward a report of any damage to the factory or the age...

Страница 9: ...0A onwards For remote sensing and the current sharing option it is provided with separate 6 way terminal block This is required if your load is far away regulation needs to be maintained at load termi...

Страница 10: ...git 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 A Resistive load or an...

Страница 11: ...17 AMX 18 VMX 19 AGND3 20 NC 21 VPSET 22 VMSET 23 IPSET 24 IMSET 25 S 1 2 3 S 4 NC 5 CS BUS 6 S 1 2 3 S 4 NC 5 CS BUS 6 Output VE Output VE LOAD REMOTE SENSING Output VE Output VE LOAD LOCAL SENSING...

Страница 12: ...RS232 interface or GPIB interface can be provided as per the order placed In case of RS232 interface a slide switch no 7 on 8 pin DIP switch array on the rear panel facilitates either LOCAL RS232 com...

Страница 13: ...erature trip condition Output ON OFF can be controlled by push button switch latch type and LED turns ON if output is available Remote LED is provided for the digital interface option It lights up whe...

Страница 14: ...12...

Страница 15: ...ling Fans 5 Input ON OFF Switch 18 SBC IEB 0504A PCB For GPIB 6 Heat Sinks 19 VSP POT IMON 0604A PCB 7 PFC Choke 20 VSP FPDAC CONV 0604A PCB 8 DC DC Converter Transformer 21 Voltage Monitoring Termina...

Страница 16: ...ng 2 Output Positive DC output terminal 3 Output Negative DC output terminal 4 S Negative Sense terminal for remote sensing 5 NC 6 CS Bus Current share bus for parallel operation 4 3 5 ANALOG INTERFAC...

Страница 17: ...itch no 5 is associated with 0 5V 0 10V programming Switch no 6 is associated 0 5V 0 10V monitoring Switch no 7 is Local RS232 and Analog interface selection Switch no 8 is associated with remote ON O...

Страница 18: ...MODE User can view the set parameters using set mode operation before turning the output ON To enter the SET mode switch off the ON OFF switch When SET key is pressed for the first time then SET LED...

Страница 19: ...f 0 to 5Volts or 0 to10 Volts between pin 4 common control pin 6 of 25 pin D type connector for voltage programming for current programming between 9 6 common control pin of 25 pin D Type connector 8...

Страница 20: ...oper address must be given To change the output voltage while working in constant voltage mode operation or to set the output current while working in constant current mode operation user has just to...

Страница 21: ...a failure occurs the user himself might be able to fix the unit by following the remedies given under particular complaint Read the manual completely in order to understand your unit better 5 2 Preve...

Страница 22: ...meter It should not be less than the output set potentiometer Check the loads at the output Check whether the temperature inside the unit is not increased abnormally No Voltage Output available at the...

Страница 23: ...f the unit is configured for RS232 interface then by proper slide switch setting by connecting a serial port of P C to 9 pin D type connector on rear panel of the unit executing RS232 interface comman...

Страница 24: ...at the same speed of the instrument as defined by the baud rate The following communication parameters are FIXED for this particular instru ment when operating in the RS232C mode POWER ON BAUD RATE 96...

Страница 25: ...RXD input the instrument is the TXD output of the host controller or PC Swapping is done internally to avoid confusion in the connection The connector definition of the COMM INTF as marked on the rea...

Страница 26: ...VSP FP DAC 1003 onto the VSP DPM CONT 1003 such that 16 pin DIL female J3 26 pin DIL female J1 on VSP FP DAC 1003 are plugged in 16 pin DIL male J7 26 pin DIL male J4 on the VSP DPM CONT 1003 card res...

Страница 27: ...nt Current mode of operation this status is also indicated on console The entire response is terminated with EOS byte For example if the Query sent is READ EOS Then the response can be as follows 14 9...

Страница 28: ...utput send the command as VOLT PROT 31 50 EOS 5 Command OUTP SP ON EOS Description Turn ON the output of power supply Function This command is used to make the OUTPUT available at the output terminals...

Страница 29: ...e trip condition occurs then the response will be 1 EOS 6 4 IEEE 488 OPERATION The IEEE 488 GPIB interface option allows the instrument to connect and form part of an Automated Test System The instrum...

Страница 30: ...m it was necessary that all interfaces be compatible To ensure this the interfaces were made to con form to a standard specification as detailed in the publication ANSI IEEE Std 488 1978 called IEEE S...

Страница 31: ...ify 6 DAV Data Valid 7 NRFD Not ready for Data 8 NDAC Not Data Accepted 9 IFC Interface Clear 10 SRQ Service Request 11 ATN Attention 12 SHIELD Screening on cable connected to Instrument Safety Ground...

Страница 32: ...ic device to send data 0 DAB Data bytes sent by currently enabled talker to all currently enabled listeners 1 UNT Disables the talker on receipt of last character UNL Unlisten LAD Listen address of sp...

Страница 33: ...nector provided for top cover earth connection after removing the cover to take it out 2 Refer to general assembly drawing for the detailed description of the cards inside the unit 3 Remove RS232 inte...

Страница 34: ...that FRC connectors provided for interconnection are placed according to following table Also place the insulation paper below the pcb route the cables below the pcb 13 Sr No Cable Type Connector No o...

Страница 35: ...The switch no A5 is not used The remaining two switches A6 A7 are used to say whether the installed IEEE 488 Interface card has to be honored or not In easy terms if switchesA6 andA7 are CLOSED ON si...

Страница 36: ...1 09 09 0 1 0 1 0 10 0A 0 1 0 1 1 11 0B 0 1 1 0 0 12 0C 0 1 1 0 1 13 0D 0 1 1 1 0 14 0E 0 1 1 1 1 15 0F 1 0 0 0 0 16 10 1 0 0 0 1 17 11 1 0 0 1 0 18 12 1 0 0 1 1 19 13 1 0 1 0 0 20 14 1 0 1 0 1 21 15...

Страница 37: ...ric Data 7 For wrong commands the command error bit will be set an error message is put into Error Queue 8 Unit will go to remote mode for all valid commands Queries will not force the unit into remot...

Страница 38: ...B SYSTEMS positioned at the top with multiple levels below each root level com mand You must specify the complete path to execute the individual lower level commands USING A COLON When a colon is the...

Страница 39: ...called Common Commands Mandatory commands for IEEE 488 2 They are required to perform the identical function for all instruments that are compliant with the IEEE 488 2 Interface Standard The Commands...

Страница 40: ...with a NEWLINE character The IEEE 488 EOI END OR IDENTITY signal is interpreted as a NEWLINE character and may also be used to terminate a message in place of the NEWLINE character Many programming l...

Страница 41: ...nt register are automatically cleared by a query of that register such as ESR or STAT QUES EVEN or by sending the CLS clear status command A reset RST or device clear will not clear bits in event regi...

Страница 42: ...SCPI STATUS SYSTEM 40...

Страница 43: ...Standard Event register bits must be enabled in enable regist 6 Request Service 64 The Instrument is requesting the SERVICE Serial Poll 7 Not Used 128 Always set to 0 The Status byte summary register...

Страница 44: ...nt for an SRQ interrupt by sending SRE 32 status byte enable register bit 5 HOW TO USE THE MESSAGE AVAILABLE BIT MAV You can use the status byte message available bit bit 4 to determine when data beco...

Страница 45: ...4 The controller tried to read the O P buffer of the instrument without giving the Query first or wrong Channel list was supplied in query 3 Device Error 8 A Self Test Calibration Or Channel TRIP err...

Страница 46: ...a event register is cleared when You execute a CLS clear status command You query the event register using STATus QUEStionable EVENt The questionable data enable register is cleared when You turn on t...

Страница 47: ...DATA 6 STATus OPERation EVENt 7 STATus OPERation ENABle 8 STATus OPERation CONDition 9 STATus OPERation ENABle SP NR DATA 10 STATus PRESet 11 CLS 12 ESE SP NR DATA 13 ESE 14 ESR 15 OPC 16 OPC 17 SRE S...

Страница 48: ...minator or EOS character will be OAH New Line character 5 For all commands AARD means Arbitrary ASCII Response Data and NR DATA means Numeric Data 6 For wrong commands the command error bit will be se...

Страница 49: ...scription Clear Status command Function This will clear status Data Structure forces the Instru ment to OCIS and OQIS state 2 Command ESE SP NR DATA Description Standard Event Status Enable command Fu...

Страница 50: ...elected device operations have been com pleted 7 Command OPC Description Operation Complete Query Function When this query is sent if the NR DATA response re ceived is 1 then it implies that the devic...

Страница 51: ...re running the Self Test with the TST Command set the OVP and OCP Limits to maximum Or else the unit will TRIP 13 Command WAI Description Wait to continue command Function This command shall prevent t...

Страница 52: ...us Questionable Enable Register in the NR DATA 0 32767 format whose corresponding HEX value repre sents the bit pattern of the Register 18 Command STATus QUEStionable CONDition Description Read Status...

Страница 53: ...sponding events in the Status Opera tion Event Register and Status Questionable Data Event Register 6 7 1 RST Conditions The following conditions are defined for the PROGRAMMABLE DC POWER SUPPLY on re...

Страница 54: ...ut at the end of the response The entire response is terminated with EOS byte Response is in Arbitrary ASCII Response Data format Channel_list indicates for which all CHANNELS the DATA has to be read...

Страница 55: ...AMPS The input CURRENT data is in Numeric Data format 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 suc...

Страница 56: ...1 2 54 5 Command SOURce VOLTage PROTection SP NR DATA Channel_list Description Set Over Voltage Protection Limit for that Channel s Function This command sets the Over Voltage Protection Limit for tha...

Страница 57: ...f operation Function This command will explicitly take the unit to remote mode All the front panel controls are disabled It is advisable to put the unit into REMOTE mode of operation using this comman...

Страница 58: ...Capability Including Local Lock Out PP0 No Parallel Poll Capability DC1 Device Clear Complete Capability Accepts DCL SDC commands and generates a communica tion soft reset and flashing out the buffer...

Страница 59: ...e Request Enable SRE Register to select which summary Bits of the Status Byte Register will set the low level IEEE 488 SRQ Signal Now write the correct data in the SRE register for enabling the SRQ re...

Страница 60: ...from remote for the Self Test 4 Wait till your BUS Controller detects an SRQ on the bus 5 When an SRQ is detected poll the SRQ from this instrument to read the SRQ response message as 80 50 Hex This m...

Страница 61: ...ecent error or event is discarded Reading an error from the head of the queue removes that error from the queue and opens a position at the tail of the queue for a new error if one is subsequently det...

Страница 62: ...error is generated To read the exact cause of the TRIP on that channel the Status Question able Data Event Register contents have to be read Message 330 Self test failed The instruments complete self...

Страница 63: ...5 CS BUS 6 Output VE Output VE LOAD 8 7 6 5 4 3 2 1 O N SWITCH CONFIGURATION ON REAR PANEL Fig 4 1a REMOTE VOLTAGEAND CURRENT PROGRAMMINGAND MONITORING NC 1 Factory Set for 0 to 5 Volts for full scal...

Страница 64: ...T 24 IMSET 25 S 1 2 3 S 4 NC 5 CS BUS 6 Output VE Output VE LOAD 8 7 6 5 4 3 2 1 O N SWITCH CONFIGURATION ON REAR PANEL Fig 4 1b EXTERNALRESISTANCE PROGRAMMING 0 TO 4 85KOHMS FOR FULL SCALE VOLTAGE CU...

Страница 65: ...l Technical advice on selecting the test instrument for a given task l Information on optional accessories for your instrument l Information on instrument repair and re calibration services l Replacem...

Страница 66: ...by completing the 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 r...

Страница 67: ...ds probes connectors and accessories that you are using with the device Customers not on open account must include payment in the form of a money order or credit card For the most current repair charg...

Страница 68: ...22820 Savi Ranch Parkway Yorba Linda CA 92887 USA TEL 714 921 9095 FAX 714 921 6422 www bkprecision com PN 481 529 9 001 Printed in India 2004 B K Precision Corp...

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