TRIPLE OUTPUT POWER SUPPLY Agilent MODEL E3630A
Contents
1. LOWER END POINT OF THE CURRENT LIMIT LINE IS NOT AD TABLE THE ER END POINT IS SET AT THE FACTORY Fi 2 754 5 BETWEEN ITS END OINTS THE ACTUAL 3RENT LIMIT IS A STRAIGHT LINE FUNCTION Figure 3 Current Limit Characteristic of the 6V Supply this region If the line voltage is maintained in the upper end of the input voltage range however the supply probably will operate within its specifications Connecting Load Each load should be connected to the power supply output terminals using separate pairs of connecting wires This will minimize mutual coupling effects between loads and takes full advantage of the low output impedance of the supply Load wires must be of adequately heavy gauge to maintain satis factory regulation at the load Each pair of connecting wires should be as short as possible and twisted or shielded to reduce noise pick up If a shield is used connect one end to the supply ground terminal and leave the other end unconnected If load considerations require locating output power distribu tion terminals at a distance from the power supply then the power supply output terminals should be connected to the remote distribution terminals by a pair of twisted or shielded wires and each load should be connected to the remote distri bution terminals separately Parallel Operation Two or more supplies can be connected in parallel to obtain a total output current greater than that available from one sup ply2. 1 10 Electrical Check 1 10 INSTALLATION s eed bt atadas aus as aaa us 1 10 Location and Cooling aa a een 1 10 OutlineDiagrar SERRE AAA LINE LIES 1 10 Rack Mounting aa bola du REA A 1 10 INPUT POWER REQUIREMENTS us sunan 1 10 Power Cable suu u muu RY SLE 1 10 OPERATING amp a nn 1 10 INTRODUCTION Z ta a RE EE 1 10 TURN ON CHECKOUT PROCEDURE 1 11 OPERATION Sup t a 1 11 Tracking Ratio 09 1 0 1 11 Overload Protection Circuifs 1 11 Operation Beyond Rated Output 1 11 Connecting Load idas Ls to A 1 12 Parallel Operation Im Rr tte RR ee D tas 1 12 series Operation ass ve uicem s sers osugiere rs HEU RE a 1 12 LOAD CONSIDERATIONS eR Rem e ae ems e cx dra UR AR 1 12 PULSE LOADING irs ev qs e queque quete aeta ny e RS 1 12 REVERSE CURRENT LOADING 1 12 OUTPU T CAPAGITANGE n uetu
3. Close the switch set the total resistance of R and the current sampling resistor to an initial value of 2 4 Q or greater and set the output voltage to 6 volts Reduce the value of R gradually while observing the out put current indicated by the DVM The current should increase to a maximum of 2 75 A 5 2 6125 A to 2 8875 A before it begins to decrease Connect a short across R and then recheck the current indicated by the DVM The short circuit current of this out put should be 1 A 15 0 85 A to 1 15 A Disconnect the test setup from the supply Load Regulation Load Effect Definition The immediate change in the static value of DC output voltage resulting from a change in load resis tance from open circuit to the value that yields maximum rated output current or vice versa To check the load regulation a Connect the test equipment across the output of the 20 V supply as shown in Figure A 5 Operate the electronic load in constant current mode and set its current to the full rated value of the 20 V supply Input off the electronic load Turn on the supply and adjust its voltage to its maximum rated value Then input on the electronic load Record the voltage indicated on the DVM d Operate the electronic load in open input off mode and recheck the DVM indication immediately The readings difference during the immediate change should be within 0 01 plus 2 mV of the reading in step c e Repeat ste
4. Korea or four digit number Malaysia assigned sequentially If a yellow Change Sheet is supplied with this manual its pur pose is to explain any differences between your instrument and the instrument described in this manual The Change Sheet may also contain information for correct ing errors in the manual OPTIONS Options OEM 0E3 and OE9 determine which line voltage is selected at the factory The standard unit is configured for 115 VAC x 10 47 63 Hz input 1 8 Option No Description OEM 115 VAC 10 47 63 Hz Input 0E3 230 VAC 10 47 63 Hz Input OE9 100 VAC x 1096 47 63 Hz Input ACCESSORY The accessory listed below may be ordered from your local Agilent Technologies Sales Office either with the power sup ply or separately Refer to the list at the rear of the manual for address Agilent Part No Description 5063 9767 Rack Kit for mounting one or two 3 1 2 high supplies in a standard 19 rack The rack mount kit is needed for rack mounting of the E3630A power supply DESCRIPTION This constant voltage current limiting triple output power sup ply combines two 0 to 20 V tracking outputs rated at 0 5 amps with an additional single output that is rated at O to 6 volts and 2 5 amps The 20 V and 20 V tracking outputs can also be used in series as a single 0 to 40 V 0 5 amp output Connections to the supply s output and to chassis ground are made to binding posts on the front panel The supply s three o
5. Sales and Service Office for service and repair to ensure that safety features are maintained Instruments that appear damaged or defective should be made inoperative and secured against unintended operation until they can be repaired by qualified service personnel 1 3 ICES NMB 001 REGULATORY MARKINGS The CE marking is a legal compliance marking of the European Community This CE marking shows that the product complies with all the relevant European Legal Directives The C tick mark is a registered trade mark of the Spectrum Management Agency of Australia This signifies compliance with the Australia EMC Framework regulations under the terms of the Radio Communication Act of 1992 ICES NMB 001 indicates that this ISM device complies with the Canadian ICES 001 Cet appareil ISM est confomre a la norme NMB 001 du Canada This instrument complies with the WEEE Directive 2002 96 EC marking requirement This affixed product label indicates that you must not discard this electrical or electronic product in domestic household waste Bo 9 The CSA mark is a registered trademark of the Canadian Standards Association This symbol indicates the time period during which no hazardous or toxic sub stance elements are expected to leak or deteriorate during normal use Forty years is the expected useful life of the product This symbol is a South Korean Class A EMC Declaration This is a Class A instrument suitable
6. The total output current is the sum of the output currents of the individual supplies The output voltage controls of one power supply should be set to the desired output voltage and the other supply set for a slightly larger output voltage The supply set to the lower output voltage will act as a constant voltage source while the supply set to the higher output will act as a current limited source dropping its output voltage until it equals that of the other supply The constant voltage source will deliver only that fraction of its rated output current necessary to fulfill the total current demand Series Operation Series operation of two or more power supplies can be accomplished up to the output isolation rating of any one sup ply to obtain a higher voltage than that available from a single supply Series connected supplies can be operated with one load across both supplies or with a separate load for each supply The power supply has a reverse polarity diode con nected across the output terminals so that if operated in series with other supplies damage will not occur if the load is short circuited or if one supply is turned on separately from its series partners When this connection is used the output volt age is the sum of the voltages of the individual supplies Each of the individual supplies must be adjusted in order to obtain the total output voltage LOAD CONSIDERATIONS This section provides information on operating your s
7. V The maximum available output current decreases with the output voltage setting A current foldback circuit limits the output to 2 75 A 5 at 6 volts and with decreasing voltage reduces the current limit linearly to 1 A 15 at zero volts short circuited LOAD REGULATION All Outputs Less than 0 01 plus 2 mV for a full load to no load change in output current LINE REGULATION All Outputs Less than 0 01 plus 2 mV for any line voltage change within rating TRACKING ACCURACY The 20 V and 20 V outputs track within 1 with the TRACKING ratio control in the Fixed position In variable tracking ratio mode the negative tracking output can be adjusted from less than 0 5 V to within 5 of the setting of the positive output PARD Ripple and Noise Less than 0 35 mV rms 1 5 mV p p 20 Hz 20 Mhz Common Mode Current CMI Less than 1 uA for all outputs 20 Hz 20 MHz All Outputs OPERATING TEMPERATURE RANGE 0 to 40 for full rated output At higher temperatures out put current is derated linearly to 50 at 55 C maximum temperature OPERATING ALTITUDE Up to 2000 m STORAGE TEMPERATURE RANGE 20 C to 70 C LINE FUSE The line fuse is located by the AC line receptacle Check the rating of the line fuse and replace it with the correct fuse if necessary as indicated below These are slow blow fuses Line Voltage Fuse Agilent Part No 100 115 VAC 1 6 A 2110 0918 230 VAC 1 0 A 2110 0599 SPECIFICATIO
8. be several orders of the magnitude greater than the supply impedance and thus invalidate the measurement To avoid mutual coupling effects each measuring device must be connected directly to the output terminals by separate pairs of leads When performance measurements are made at the front ter minals Figure A 2 the load should be plugged into the front of the terminals at B while the monitoring device is con nected to a small lead or bus wire inserted through the hole in the neck of the binding post at A Connecting the measuring device at B would result in a measurement that includes the resistance of the leads between the output terminals and the point of connection OUTPUT TERMINAL LOAD LEAD TOR HERE Figure A 2 Front Panel Terminal Connections Selecting Load Resistors Power supply specifications are checked with a full load resistance connected across the sup ply output The resistance and wattage of the load resistor therefore must permit operation of the supply at its rated out put voltage and current For example a supply rated at 20 volts and 0 5 amperes would require a load resistance of 40 Q at the rated output voltage The wattage rating of this resistor would have to be at least 20 watts Electronic Load Some of the performance test procedures use an electronic load to test the supply quickly and accu rately An electronic load is considerably easier to use tha
9. before it is connected to any load equipment i PAGADA L N ERA D 2EIV DEA Agilent his UIFUT DG rom sum Figure 2 Front Panel Controls and Indicators CAUTION Before applying power to the supply check the label on the heat sink to make certain that the supply s line voltage option agrees with the line voltage to be used If the option does not correspond to your line voltage refer to paragraph LINE VOLTAGE OPTION CONVERSION in the service section before applying power TURN ON CHECKOUT PROCEDURE a Connect line cord to power source and turn LINE switch on b Push 6V METER switch gt and with no load con nected vary 6 V VOLTAGE control 5 over its range and check that the voltmeter responds to the control setting and the ammeter indicates zero c Setthe 6V VOLTAGE control to 6 volts and short the 6 V output terminal to COM common terminal 3 with an insulated test lead The ammeter should indicate a short circuit output current of approximately 1 0 A Remove the short from the output terminals d Push the 20 V METER switch gt and turn Tracking Ratio control 7 fully clockwise to the Fixed position With no load connected vary 20 V VOLTAGE control 5 over its range and check that the voltmeter responds to the control setting and the ammeter indi cates zero e Set 20 V VOLTAGE control to 20 volts and short
10. hey T F ero ght hed LA C12 U6 0513 ra OOD Y 40 o c c c c 02 52 X 7 911 Agilent SIPADAN 30 5020 9072 230V 0302 3002 00111 m DM MAT MARUDO an in 7 MAIN BOARD BOTTOM A 8 DISPLAY CONTROLLER TOP Agilent SIPADAN 20 7 30 Uy US C12 11 Rio gt J1 C9 C 12 153 w C1H C BE A 9020 9073 7 34 04 32805 C3002 00211 Ontos ROHS DISPLAY CONTROLLER BOTTOM LLI A O Q lt m 7 SEGMENT TOP R18 5020 9074 M R19 c3002 00311 7 051 152 058 4 11099 Tr ns DS11 JP5 JP6 JP7 7 SEGMENT BOTTOM A 12 www agilent com Contact us To obtain service warranty or technical support assistance contact us at the following phone numbers United States tel 800 829 4444 fax 800 829 4433 Canada tel 877 894 4414 fax 800 746 4866 China tel 800 810 0189 fax 800 820 2816 Europe tel 31 20 547 2111 Japan tel 81 426 56 7832 fax 81 426 56 7840 Korea tel 080 769 0800 fax 080 769 0900 Latin America tel 305 269 7500 Taiwan tel 0800 047 866 fax 0800 286 331 Other Asia Pacific Countries tel 65 6375 8100 fax 65 6755 0042 Or visit Agilent World Wide W
11. the 20 V output terminal ic to the COM terminal 5 with an insulated test lead The ammeter should indicate a short circuit output current of 0 55 A 5 Remove the short from the output terminals f Repeat steps d and e for 20 V output g Adjust the 20 V output to 20 volts Then push 20 V METER switch and check the effect of the Tracking Ratio control on the voltage of the 20 V output The 20 V output should be adjustable from less than 0 5 volts to a maximum of 19 to 21 volts If this brief checkout procedure or later use of the supply reveals a possible malfunction see the service information section for detailed test troubleshooting and adjustment pro cedures OPERATION This power supply can be operated individually or in parallel or series with another supply see Parallel and Series Opera tion paragraphs All output terminals are isolated from ground The 20 V and 6 V outputs use a single common output terminal This common COM terminal or any one of the other output terminals may be grounded to the chassis at the front panel ground terminal 77 in Figure 2 or all outputs may be left floating Loads can be connected separately between each of the 0 to 20 V output terminals and the COM terminal or between the 20 V and the 20 V terminals for a 0 to 40 V output Each output voltage or current can be quickly selected for monitoring with the push button meter switches To monitor the 0 to 40 V outp
12. with an associated piece of equipment You can determine this without removing the covers from the power supply by using the appropriate portions of the Performance Test paragraph CAUTION Before applying power to the supply make certain that its line voltage selector switch S2 is set for the line voltage to be used Open Fuse Troubleshooting Although transients or fatigue can cause a fuse to blow it is a good idea to inspect the unit for obvious shorts such as dam aged wiring charred components or extraneous metal parts or wire clippings in contact with circuit board conductors before replacing the fuse The rating of the correct replace ment fuse depends on the line voltage option of the instru ment for Option OE3 use a slow blow 1 0 amp fuse and standard and Option OE9 use a slow blow 1 6 amp fuse ADJUSTMENT AND CALIBRATION Current Limit Adjustment 6 V Supply To adjust the current limit circuit in the 6 V supply proceed as follows a Check the setting of the current limit by performing steps p and q on page A 3 Be sure to set the output voltage to 6 volts If reducing the load resistance permits the cur rent to exceed 2 9 A stop turn R6 slightly clockwise and repeat the test If instead the current begins to fall before it reaches 2 6 A turn R6 slightly counter clockwise and repeat the test b Recheck the setting and readjust R6 until the test shows that the current limit circuit beg
13. CTION A diode is connected across the output terminals with reverse polarity This diode protects the output electrolytic capacitors and the series regulator transistors from the effects of a reverse voltage applied across the output terminals Since series regulator transistors cannot withstand reverse voltage either diodes are also connected across them When operat ing supplies in parallel these diodes protect an unenergized supply that is in parallel with an energized supply Figure 4 Reverse Current Loading Solution 1 13 THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK SERVICE INFORMATION MAINTENANCE INTRODUCTION This section provides performance test troubleshooting infor mation and adjustment and calibration procedures The fol lowing operation verification tests comprise a short procedure to verify that the power supply is performing properly without testing all specified parameters If a fault is detected in the power supply while making the performance check or during normal operation proceed to the troubleshooting procedures After troubleshooting per form any necessary adjustments and calibrations Before returning the power supply to normal operation repeat the performance check to ensure that the fault has been properly corrected and that no other faults exist Test Equipment Required The following Table A 1 lists the equipment required to per form the various procedures described in this s
14. Manual Part No 5959 5329 E Agilent Technologies TRIPLE OUTPUT POWER SUPPLY Agilent MODEL E3630A OPERATING AND SERVICE MANUAL April 21 2014 Eleventh Edition Agilent Technologies CERTIFICATION Agilent Technologies certifies that this product met its published specifications at time of shipment from the factory Agilent Technologies further certifies that its calibration measurements are traceable to the United States National Institute of Stan dards and Technology formerly National Bureau of Standards to the extent allowed by that organization s calibration facility and to the calibration facilities of other International Standards Organization members WARRANTY This Agilent Technologies hardware product is warranted against defects in material and workmanship for a period of 3 years from date of delivery Agilent software and firmware products which are designated by Agilent for use with a hardware prod uct and when properly installed on that hardware product are warranted not to fail to execute their programming instructions due to defects in material and workmanship for a period of 90 days from date of delivery During the warranty period either Agilent or Agilent Technologies will at its option either repair or replace products which prove to be defective Agilent does not warrant that operation the software firmware or hardware shall be uninterrupted or error free For warranty service with the exception of warra
15. NS Table 1 lists detailed specifications for the power supply Specifications 1 9 HUMIDITY Up to 80 RH LOAD TRANSIENT RESPONSE TIME All Outputs Less than 50 usec for output recovery to within 15 mV of nominal output voltage following a load change from full load to half load or vice versa METER ACCURACY 0 5 of output 2 counts at 25 5 METER RESOLUTION All Output Voltage10 mV Current10 mA TYPICAL SUPPLEMENTAL SPECIFCATIONS TEMPERATURE COEFFICIENT All Outputs Less than 0 02 plus 1 mV voltage change per C over the operating range from 0 to 40 C after 30 minutes warm up STABILITY OUTPUT DRIFT All Outputs Less than 0 1 plus 5 mV DC to 20 Hz dur ing 8 hours at constant line load and ambient after an initial warm up time of 30 minutes OUTPUT VOLTAGE OVERSHOOT All Outputs During turn on or turn off of AC power output plus overshoot will not exceed 1 V if the out put control is set for less than 1 V If the con trol is set for 1 V or higher there is no overshoot GENERAL SPECIFICATIONS AC INPUT OEM OE9 115 VAC x 1096 47 63 Hz 115 VA 84 W 100 VAC x 10 47 63 Hz 115 VA 84 W 230 x 10 47 63 Hz 115 VA 84 W DIMENSIONS 212 3 mmW x 88 1 mmH x 269 2 mmD 8 354 inW x 3 469 inH x 10 591 inD WEIGHT 3 8 kg 8 4 Ibs net 5 1 kg 11 3 Ibs shipping This instrument is Intended for Indoor use INSTALLATION INITIAL INSPECTION Before shipment this instrument w
16. as inspected and found to be free of mechanical and electrical defects As soon as the instrument is unpacked inspect for any damage that may have occurred in transit Save all packing materials until the inspection is completed If damage is found a claim should be filed with the carrier The Agilent Technologies Sales and Service office should be notified as soon as possible Mechanical Check This check should confirm that there are no broken knobs or connectors that the cabinet and panel surfaces are free of dents and scratches and that the meter is not scratched or cracked Electrical Check Perform the TURN ON CHECKOUT PROCEDURE in the fol lowing paragraph to confirm that the supply is operational Alternately check the supply more fully using the PERFOR MANCE TEST in the service information section INSTALLATION DATA The instrument is shipped ready for bench operation Before applying power to the supply please read the INPUT POWER REQUIREMENTS paragraph Location and Cooling This instrument is air cooled Sufficient space should be allowed so that a free flow of cooling air can reach the sides and rear of the instrument when it is in operation It should be used in an area where the ambient temperature does not exceed 40 C Outline Diagram Figure 1 illustrates the outline shape and dimensions of the supply Rack Mounting This supply may be rack mounted in a standard 19 inch rack panel either by itself or alon
17. ct is a Safety Class instrument provided with a protective earth terminal To minimize shock hazard the instrument chassis and cabinet must be connected to an electrical ground The instrument must be connected to the AC power supply mains through a three conductor power cable with the third wire firmly connected to an electrical ground safety ground at the power outlet Any interruption of the protective grounding conductor or disconnection of the protective earth terminal will cause a potential shock hazard that could result in personal injury If the instrument is to be energized via an external autotransformer for voltage reduc tion be certain that the autotransformer common terminal is connected to the neutral earthed pole of the AC power lines supply mains DO NOT OPERATE IN AN EXPLOSIVE ATMOSPHERE Do not operate the instrument in the presence of flammable gases or fumes KEEP AWAY FROM LIVE CIRCUITS Operating personnel must not remove instrument covers Component replacement and internal adjustments must be made by qualified service personnel Do not replace compo nents with power cable connected Under certain conditions dangerous voltages may exist even with the power cable removed To avoid injuries always disconnect power dis charge circuits and remove external voltage sources before touching components DO NOT SERVICE OR ADJUST ALONE Do not attempt internal service or adjustment unless another person capabl
18. duces the output current limit as the output terminal voltage decreases The operating region of the 6 V output is enclosed by heavy lines in Figure 4 The maximum rated output current is 2 5 A and the current limit is factory adjusted to operate at 2 75 A 5 when the output is 6 volts At lower output voltages the circuit reduces the maximum obtainable output current linearly until 15 flows when the output is shorted The short circuit current cannot be adjusted NOTE During the actual operation of the 20 V and 6 V outputs if a load change causes the current limit to be exceeded the OL LED is lighted If overload conditions occur the 20 V sup plies will protect the load by limiting the current to 0 55 A and the 6 V supply will protect the load by reducing both voltage and current simultaneously along the foldback locus as shown in Figure 4 The 20 V and 6 V supplies are self restoring that is when the overload is removed or corrected the output voltage is automatically restored to the previously set value Operation Beyond Rated Output The supply may be able to provide voltages and currents greater than its rated maximum outputs if the line voltage is at or above its nominal value Operation can be extended up to 5 over the rated output without damage to the supply but performance cannot be guaranteed to meet specifications in OPERATING REGION NOTE
19. e of rendering first aid and resuscitation is present SAFETY SYMBOLS Caution risk of danger refer to this A manual for specific Warning or Caution information Direct current DC Alternating current AC Protective conductor terminal Out position of a bi stable push control In position of a bi stable push control Earth ground terminal Positive binding post Negative binding post Frame or chasis terminal The WARNING sign denotes a hazard It calls attention to a procedure practice or the like which if not correctly per formed or adhered to could result inper sonal injury Do not proceed beyond a WARNING sign until the indicated con ditions are fully understood and met The CAUTION sign denotes a hazard It calls attention to an operating procedure or the like which if not correctly per formed or adhered to could result in damage to or destruction of part or all of the product Do not proceed beyond CAUTION sign until the indicated condi tions are fully understood and met The NOTE sign denotes important infor mation It calls attention to a procedure practice condition or the like which is essential to highlight DO NOT SUBSTITUTE PARTS OR MODIFY INSTRUMENT Because of the danger of introducing additional hazards do not install substitute parts or perform any unauthorized modi fication to the instrument Return the instrument to a Agilent Technologies
20. e output The tracking ratio control allows the negative supply s output to be set to any value between a maximum that is within 5 of the positive supply s output and a minimum that is less than 0 5 volts Once a ratio is established by the tracking ratio control the ratio of the positive output voltage to the negative output voltage remains constant as the 20 V voltage control varies the O to 20 V output over its range The front panel also contains a line switch three overload indicators for 6 V output 20 V output and 20 V output a voltmeter and an ammeter and three push button meter switches The push buttons select one of the supply s three outputs for display The voltmeter and ammeter always moni tor any one supply simultaneously In addition to the standard 115 VAC 10 47 to 63 Hz input two other line voltage option sare available for nominal inputs of 100 and 230 Vac The supply is furnished with a detachable 3 wire grounding type line cord The AC line fuse is in an extractor type fuseholder on the rear heat sink Table 1 WARRANTED SPECIFICATIONS DC OUTPUT and OVERLOAD PROTECTION 0 to 20 V Outputs Maximum rated output current is 0 5 A Short circuit output current is 0 55 A 5 and a fixed cur rent limit circuit limits the output of each supply to this maxi mum at any output voltage setting Unbalanced loads within current rating are permitted 0 to 6 V Output Maximum rated output current is 2 5 A at 6
21. eb at www agilent com find assist Product specifications and descriptions in this document are subject to change without notice Always refer to the English version at the Agilent Web site for the latest revision O Agilent Technologies Inc 2002 2014 Printed in Malaysia Eleventh Edition April 21 2014 5959 5329 Es Agilent Technologies
22. ection Table A 1 Test Equipment Required Bandwidth 20 MHz 100 MHz TYPE REQUIRED CHARACTERISTICS USE RECOMMENDED MODEL Oscilloscope Sensitivity 100 uV Display transient response and ripple Agilent 54600A and noise waveforms RMS Voltmeter True rms 20 MHz bandwidth Sensitivity 1 mV Accuracy 5 Measure rms ripple and noise voltage Resolution 100 nV Accuracy 0 0035 Multimeter Measure DC voltages Agilent 34401A Electronic Load Voltage Range 240 VDC Current Range 10 ADC Open and short switches Transient on off Measure load and line regulation Agilent 6063A Resistive Loads RL 40 Q 20 W 2 4 Q 20 W Measure ripple and noise Current Sampling 100 0 1 15 W Resistor Shunt Measure output current Variable Voltage Auto Transformer Range 85 130 and 200 260 Volts Vary AC input Operation Verification Tests The following tests assure that the power supply is per forming properly They do not however check all the speci fied parameters tested in the complete performance test described below Proceed as follows a Perform turn on checkout procedure given in page 1 11 b Perform the load regulation performance tests given in the following paragraphs Line Voltage Option Conversion To convert the supply from one line voltage option to another the following three steps are necessary a After making certain that the line co
23. etween one half of supply s full rated value and supply s full rated value at a 1 KHz rate with 50 duty cycle Set the oscilloscope for AC coupling internal sync and lock on either the positive or negative load transient Adjust the oscilloscope to display transients as in Figure A 7 Check that the pulse width t t of the transients at 15 mV from the base line is no more than 50 usec as shown Repeat for the remaining supply outputs 25 60us 1 6t 39 06kHz Figure A 7 Load Transient Response Time Waveform Stability Drift Definition The change in output voltage DC to 20 Hz for the first 8 hours following a 30 minute warm up period with constant input line voltage constant load resistance and con stant ambient temperature To measure the stability a Connect the test equipment across the output of the 20 V supply as shown in Figure A 5 b Operate the electronic load in constant current mode and set its current to the full rated value of power supply c Turn on the supply d Turn up output voltage to the full rated value as read on the digital voltmeter e After a 30 minute warm up note the voltage on DVM A 5 f The output voltage reading should deviate less than 0 1 plus 5 mV from the reading obtained in step e over a period of 8 hours Repeat for the remaining supply outputs TROUBLESHOOTING Before attempting to troubleshoot the power supply ensure that the fault is with the supply and not
24. for professional use and in electromagnetic environment outside of the home DECLARATION OF CONFORMITY The Declaration of Conformity DoC for this instrument is available on the Agilent Web site You can search the DoC by its product model or description at the web address below http regulations corporate agilent com DoC search htm NOTE If you are unable to search for the respective DoC please contact your local Agilent representative 1 5 TABLE OF CONTENTS SAFETY SUMMARY pu a an ASAE Sosa 1 3 REGULATORY MARKINGS a s hh 1 4 DECLARATION OF CONFORMITY 1 5 GENERAL INFORMATION u ee ee us Cass s a susan siw w aia sa a 1 8 INTRODUCETION ARAS kasa ek PN ee ERR 1 8 SAFETY CONSIDERATIONS 1 8 SAFETY AND REQUIREMENTS asst 1 8 INSTRUMENT AND MANUAL IDENTIFICATION 1 8 OPTIONS min cele aa ns 1 8 ACCESSORY ouem pA arre dada de 1 8 DESCRIPTION Lala satu tata aia tt lio e 1 8 EINE ea Bee Be Dre ae ey Be ee 1 9 SBEGCIEIGATIONS 2 Arum id 1 9 INSTALLATION i EMEN RR RR uia Rm eR ATE Dar eta e 1 10 INITIAL INSPECTION Loco 1 10 Mechanical Check
25. gside a similar unit Please see the ACCESSORY page 1 8 for available rack mounting accessory The rack mounting kit includes complete installa tion instructions INPUT POWER REQUIREMENTS Depending on the line voltage option ordered the supply is ready to be operated from one of the power sources listed in Table 1 A label on the rear heat sink shows the nominal input voltage set for the supply at the factory Power Cable To protect operating personnel the supply should be grounded This supply is equipped with a three conductor power cable The third conductor is the ground conductor and when the cable is plugged into an appropriate receptacle the supply is grounded The power supply is equipped at the factory with a power cord plug appropriate for the user s location Notify the near est Agilent Sales and Service Office if the appropriate power cord is not included with the supply _ 90mm _ 3567in 2123 mm 8 354 in 269 2 mm 10 591 in 10 318 4 mm 12 534 in 86 1 3 469in LT Figure 1 Outline Diagram OPERATING INSTRUCTIONS INTRODUCTION The following steps describe the use of the front panel con trols and indicators illustrated in Figure 2 and serve as a brief check that the supply is operational Follow this checkout pro cedure or the more detailed performance test of service infor mation section when the instrument is received and
26. ia and New Zealand The warranty terms contained in this statement except to the extent lawfully permitted do not exclude restrict or modify and are in addition to the mandatory rights applicable to the sale of this product to you EXCLUSIVE REMEDIES TO THE EXTENT ALLOWED BY LOCAL LAW THE REMEDIES PROVIDED HEREIN ARE THE CUSTOMER S SOLE AND EXCLUSIVE REMEDIES AGILENT SHALL NOT BE LIABLE FOR ANY DIRECT INDIRECT SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGES WHETHER BASED ON CONTRACT TORT OR ANY OTHER LEGAL THEORY ASSISTANCE The above statements apply only to the standard product warranty Warranty options extended support contacts product maintenance agreements and customer assistance agreements are also available Contact your nearest Agilent Technolo gies Sales and Service office for further information on Agilent s full line of Support Programs SAFETY SUMMARY The following general safety precautions must be observed during all phases of operation service and repair of this instrument Failure to comply with these precautions or with specific warnings elsewhere in this manual violates safety standards of design manufacture and intended use of the instrument Agilent Technologies assumes no liability for the customer s failure to comply with these requirements BEFORE APPLYING POWER Verify that the product is set to match the available line volt age and that the correct fuse is installed GROUND THE INSTRUMENT This produ
27. ins to reduce the current when a decreasing load resistance increases it to 2 75 A 5 6 Meter Calibration Panel Voltmeters To calibrate voltmeter proceed as follows a Connect DVM across 20 V output terminal and COM ter minal of the supply b Turn on the supply Setthe output voltage below 18 V ex 15 V and adjust R11 on the display board until front panel VOLTS display reads exactly DVM value Next set the output voltage above 20 V ex 21 V and adjust R17 on the display board until front panel VOLTS display reads exactly DVM value NOTE No other voltage output needs to be calibrated after calibrating the voltmeter of 20V output Panel Ammeter To calibrate ammeter for 20 V output and 20 V output proceed as follows a Connect lt between 20 V output terminal and COM ter minal and connect DVM across Rs b Push 20 V meter switch and turn x20 V VOLTAGE con trol fully clockwise c Turn on the supply and adjust R5 on the display board until front panel AMPS display reads exactly DVM value divided by Rs d To calibrate the ammeter for 6 V output select 6 V meter switch and turn 6 V VOLTAGE control fully clock wise e Adjust R61 on the main board until front panel AMPS dis play reads exactly DVM value divided by Rs COMPONENT LOCATOR DIAGRAMS MAIN BOARD TOP BARCODE 1 R N 7 N 0 D OS U2 C ICT 0zuo T eno
28. lus 2mV of the reading in step d f Repeat steps b through e for each of the remaining supply out puts Ripple and Noise Definition Ripple and noise are measured in the rms or peak to peak value over a 20 Hz to 20 MHz bandwidth Fluctuations below the lower frequency limit are treated as drift RMS Measurement The rms measurement is not an ideal representation of the noise since fairly high output noise spikes of short duration could be present in the ripple and not appreciably increase the rms value To measure the ripple and noise of the rms value on each output supply output a Connect the test equipment across the output of the 20 V supply as shown in Figure A 6 b Turn on the supply and push 20V METER switch A 4 c Turn up output voltage to the full rated value d Check that the rms noise voltage at the true rms voltme ter is less than 0 35 mV e Repeat for the remaining supply outputs TRUE rms VOLTMETER 2 4 ohms 20 W for 6V output 40 ohms 20 W for 20 V output Figure A 6 Ripple and Noise rms Measurement Test Setup Peak to Peak Measurement The peak to peak measurement is particularly important for applications where noise spikes could be detrimental to a sensitive load such as logic circuitry To measure the ripple and noise of the peak to peak value on each output supply output a Connect the test equipment across the output of the 20 V supply as shown in Figure A 6 b
29. n a A 2 load resistor eliminates the need for connecting resistors or rheostats in parallel to handle the power it is much more sta ble than a carbon pile load 15 easier to switch between load conditions as required for the load regulation and load tran sient response tests Output Current Measurement For accurate output current measurements a current sampling resistor should be inserted between the load and the output of the supply To simplify grounding problems one end of this sampling resistor should be connected to the same output terminal of the supply which will be shorted to ground An accurate voltmeter is then placed across the sampling resistor and the output current calculated by dividing the voltage across the sampling resistor by its ohmic value The total resistance of the series combination should be equal to the full load resistance as determined in the preceding paragraphs Of course if the value of the sampling resistor is very low when compared to the full load resistance the value of the sampling resistor may be ignored The meter shunt recom mended in Table A 1 for example has a resistance of only 100 and can be neglected when calculating the load resistance of the supply Figure A 3 shows a four terminal meter shunt The load current through a shunt must be fed from the extremes of the wire leading to the resistor while the sampling connections are made as close as possible to the resistance portio
30. n itself CURRENT SAMPLING gt TERMINAL m C V Q gt TERMINAL OF ER SUPPLY SUPPLY AMPLING RESIST LOA TERMINALS Figure A 3 Current Sampling Resistor Connections Rated Output Tracking Meter Accuracy and Cur rent Limit To check that all supplies will furnish their maximum rated output voltage and current that the 20 V outputs track each other that the front panel meters are accurate and that the current limit circuits function proceed as follows Voltmeter Accuracy 6V a With no loads connected turn on the supply connect a digital voltmeter between the 6V terminal and common COM and set the 6V VOLTAGE control so that the DVM indication is as near as possible to 5 volts b Push the 6V METER switch on and check the front panel voltmeter indication It should be within 0 5 2 counts of the DVM indication 4 96 V to 5 04 V Voltmeter Accuracy 20 V a With no loads connected turn on the supply connect a digital voltmeter between the 20 V terminal and common COM and set the 20 V VOLTAGE control so that the DVM indication is as near as possible to 17 volts b Push the 20V METER switch on and check the front panel voltmeter indication It should be within 0 5 2 counts of the DVM indication 16 90 V to 17 10 V Set the TRACKING RATIO control to the FIXED position and check the 20 V and 20 V ranges of the front panel voltmeter similarly by connecting the DVM to each
31. nty options this product must be returned to the nearest sevice center des ignated by Agilent Customer shall prepay shipping charges by and shall pay all duty and taxes for products returned to Agi lent for warranty service Except for the products returned to Customer from another country Agilent shall pay for return of products to Customer Warranty services outside the country of initial purchase are included in Agilent s product price only if Customer pays Agilent international prices defined as destination local currency price or U S or Geneva Export price If Agilent is unable within a reasonable time to repair or replace any product to condition as warranted the Customer shall be entitled to a refund of the purchase price upon return of the product to Agilent The warranty period begins on the date of delivery or on the date of installation if installed by Agilent LIMITATION OF WARRANTY The foregoing warranty shall not apply to defects resulting from improper or inadequate maintenance by the Customer Cus tomer supplied software or interfacing unauthorized modification or misuse operation outside of the environmental specifica tions for the product or improper site preparation and maintenance TO THE EXTENT ALLOWED BY LOCAL LAW NO OTHER WARRANTY IS EXPRESSED OR IMPLIED AND AGILENT SPECIFICALLY DISCLAIMS THE IMPLIED WARRAN TIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE For consumer transactions in Austral
32. of these outputs in turn setting the 20 V VOLTAGE control for a 20 volts DVM indication and verifying that the panel meter is accurate within 0 5 2 counts 19 7 V to 20 3 V Tracking Connect the DVM to the 20 V output set the 20 V VOLTAGE control for a DVM indication of 20 volts and reconnect the DVM to the 20 V output without disturbing the voltage control The voltage at the 20 V output should be within 1 of the 20 V output 19 8 V to 20 2 V Variable Tracking Ratio Leave the 20 V VOLTAGE control set as in step d and use a DVM to monitor the voltage of the 20 V supply while adjusting the TRACKING RATIO control over its VARIABLE range The 20 V supply should be capable of being adjusted from less than 0 5 volts to between 19 to 21 volts Return the TRACKING RATIO control to the FIXED position NOTE Leave the TRACKING RATIO control in the FIXED position throughout the rest of the performance test Rated Output and Ammeter Accuracy Connect two 40 Q 20 W load resistors across both of the 20V outputs of the supply and set the 20 V VOLTAGE control for 20 V outputs All supplies must be fully loaded while checking the rated output voltage and cur rent of each supply Connect the test setup shown Figure A 4 to the 6 V output Make the total resistance of R and the current sampling resistor equal to 2 4 to permit operating the output at full load should have a power rating of at least 20 wat
33. ps a through d for each of the remaining supply outputs oe SUPPLY n on D ELECTRONIC UNDER LOAD TEST gt A regulated AC source is used in this load effect testing contiguration to REGULATED SOURCE maintain the AC input at a predetermined value This will ensure that the test results reflect changes in VoUT only with respect to load current changes Figure A 5 Basic Test Setup Line Regulation Source Effect Definition The immediate change Eoun in the static value of DC output voltage resulting from a change in AC input voltage from a minimum to a maximum value 10 of nominal voltage To check the line regulation a Connect a variable autotransformer between the input power source and the power supply line plug b Connect the test equipment across the output of the 20 V sup ply as shown in Figure A 5 Operate the electronic load in con stant current mode and set its current to the full rated value of the 20 V supply Input off the electronic load c Adjustthe autotransformer for a low line input 10 of nominal volt age d Turn on the power adjust the output of the supply to its maximum rated voltage then input on the electronic load Record the DVM indication e Adjust the autotransformer for high line voltage input 10 of nominal voltage and recheck the DVM indica tion immediately The readings difference during the immediate change should be within 0 01 p
34. rd is disconnected from a source of power remove the top cover from the supply and set the two sections of the line voltage selec tor switch for the desired line voltage see Figure A 1 b Check the rating of the installed fuse and replace it with the correct value if necessary For Option OE3 use a slow blow 1 0 amp fuse For standard and Option OE9 use a slow blow 1 6 amp fuse A 1 c Mark the instrument clearly with a tag or label indicating the correct line voltage to be used FRONT SUPPLY Figure A 1 Line Voltage Selector set for 115 VAC PERFORMANCE TESTS The following paragraphs provide test procedures for verify ing the power supply s compliance with the specifications of Table 1 Proceed to the troubleshooting procedures if you observe any out of specification performance CAUTION Before applying power to the supply make certain that its line voltage selector switch S2 is set for the line voltage to be used See CAUTION notice in operating section for additional information on S2 GENERAL MEASUREMENT TECHNIQUES Connecting Measuring Devices To achieve valid results when measuring load regulation ripple and noise and tran sient response time of the supply measuring devices must be connected as close to the output terminals as possible A measurement made across the load includes the impedance of the leads to the load The impedance of the load leads can easily
35. rovided with a protective earth ground terminal This ter minal must be connected to an AC source that has a 3 wire ground receptacle Review the instrument rear panel and this manual for safety markings and instructions before operating the instrument Refer to the Safety Summary page at the beginning of this manual for a summary of general safety information Specific safety information is located at the appropriate places in this manual SAFETY AND EMC REQUIREMENTS This power supply is designed to comply with the following safety and EMC Electromagnetic Compatibility requirements Safety m IEC 61010 1 2010 EN 61010 1 2010 m CAN CSA C22 2 61010 1 12 EMC m IEC 61326 1 2005 EN61326 1 2006 m CISPR11 2003 EN55011 2007 W Canada ICES NMB 001 lssue 4 June 2006 Australia New Zealand AS NZS CISPR 11 2004 INSTRUMENT AND MANUAL IDENTIFICATION A serial number identifies your power supply The serial num ber encodes the country of manufacture the week of the lat est significant design change and a unique sequential number The letter KR or MY designates Korea or Malay sia as the country of manufacture respectively For Korea the first one digit indicates the year 3 1993 4 1994 and so forth and the second two digits indicate the week For Malaysia the first two digits indicate Agilent year and the sec ond two digits indicate the work week The remaining digits of the serial number are a unique five digit number
36. s eoe et tt 1 12 REVERSE VOLTAGE PROTECTION 1 12 SERVICE 1 1 11011 A 1 MAINTENANCE Se SESS STER a o Geste eu Note e A 1 MAINTENANCE a A 1 INTRODUCTION os usa a Ua Uq ays A 1 TESTS ad 2 1 6 GENERAL MEASUREMENT TECHNIQUES A 2 TROUBLESHOOTING sea Pe rauen A 6 ADJUSTMENT AND CALIBRATION 2 1 A 6 COMPONENT LOCATOR DIAGRAMS A 7 MAIN BOARD ernennen A 7 MAIN BOARD BOTTOM A 8 DISPLAY CONTROLLER TOP A 9 DISPLAY CONTROLLER A 10 7 SEGMENT TOP 0 A 11 7 SEGMENT BOTTOM p I A 12 1 7 GENERAL INFORMATION INTRODUCTION This section contains general information concerning the E3630A triple output power supply Included are safety con siderations safety and EMC requirements instrument and manual identification option and accessory information instrument description and specifications SAFETY CONSIDERATIONS This product is a Safety Class instrument which means that it is p
37. ts Close the switch and set the 6 V VOLTAGE control so that the DVM indicates a voltage drop across the current sam pling resistor that corresponds to a current of 2 5 amps Push the 6 V METER switch and verify that the front panel ammeter indication is within 0 5 2 counts of 2 5 amps 2 47 A to 2 53 A Check the rated output and ammeter accuracy of the 20 V and 20 V supplies similarly by connecting the test setup of Figure A 4 to each output in turn For each 20 V supply make the total resistance of R and the current sampling resistor 40 Q set the 20 V VOLTAGE control for a current indication on the DVM of 0 5 A check that the panel meter indication is within 0 5 2 counts of 0 5 A 0 48 A to 0 52 A A 3 Figure A 4 Output Current Test Set UP Current Limit Disconnect all loads from the supply Connect the test setup shown in Figure A 4 to the 20 volt output Substitute a short for and leave the load circuit switch open Set the voltage of the 20 V supplies to 20 volts Close the load switch and determine the current flow through the current sampling resistor meter shunt by measuring its voltage drop with the DVM The current should be 0 55 A 15 0 5225 A to 0 5775 A Check the current limit of the 20 V supply in the same way lts short circuit current should also be 0 55 A 15 0 5225 A to 0 5775 A Connect the test setup shown in Figure A 4 to the 6V output
38. upply with various types of loads connected to its output PULSE LOADING The power supply will automatically cross over from constant voltage to current limit operation in response to an increase in the output current over the preset limit Although the preset limit may be set higher than the average output current high peak currents as occur in pulse loading may exceed the pre set current limit and cause crossover to occur and degrade performance REVERSE CURRENT LOADING An active load connected to the supply may actually deliver a reverse current to the supply during a portion of its operating cycle An external source cannot be allowed to pump current into the supply without risking loss of regulation and possible damage to the output capacitor of the supply To avoid these effects it is necessary to preload the supply with a dummy load resistor so that the supply delivers current through the entire operating cycle of the load devices OUTPUT CAPACITANCE An internal capacitor across the output terminals of the supply helps to supply high current pulses of short duration during constant voltage operation Any capacitance added externally will improve the pulse current capability but will decrease the load protection provided by the current limiting circuit A high current pulse may damage load components before the aver age output current is large enough to cause the current limit ing circuit to operate REVERSE VOLTAGE PROTE
39. ut replace the true rms voltmeter with the oscilloscope b Turn on the supply and push 20 V METER switch c Turn up output voltage to the full rated value d Set the oscilloscope to AC mode and bandwidth to 20 MHz e Check that the peak to peak noise is less than 1 5 mV f Repeat for the remaining supply outputs Common Mode Current CMI Definition Common mode current is that AC current compo nent which exists between any or all supply or output lines and chassis ground To measure the common mode current a Connect the full load for 6 V output b Connect a 100 resistor Rg and a 2200 pF capacitor in parallel between common terminal COM and chassis ground c Connect the DVM across Rs d Turn on the supply e Record the voltage across Rg and convert it to current by dividing this voltage by Rs f Check that the current is less than 1 uA Load Transient Response Time Definition This is the time for the output voltage to return to within a specified band around its voltage following a change from full load to half load or half load to full load To measure the load transient response time a Connect the test equipment across the output of the 20 V supply as shown in Figure A 5 but replace the DVM with the oscilloscope Operate the electronic load in constant current mode b Turn on the supply c Turn up output voltage to the full rated value Set the electronic load to transient operation mode b
40. ut voltage add the voltmeter readings of the 20 V and 20 V output and use either the 20 V or the 20 V meter to measure the current Tracking Ratio Control With the Tracking Ratio control in the Fixed position the volt age of the 20 V supply tracks that of the 20 V supply within 196 for convenience in varying the symmetrical voltages needed by operational amplifiers and other circuits using bal anced positive and negative inputs Turn the Tracking Ratio control counter clockwise out of the Fixed position to set the voltage of the 20V supply lower than that of the 20 V supply The negative supply can be set from a minimum of less than 0 5 volts to a maximum within 596 of the 20 V supply s output Once this is done the 20 V volt age control still controls both outputs and maintains a con stant ratio between their voltages Overload Protection Circuits 20 Volt Current Limit The 20 V and 20 V outputs are individually protected against overload or short circuit dam age by separate current limit circuits to limit the output current to 0 55 A 5 This is 110 of the maximum rated output If a single load is connected between the 20 V and 20 V outputs the circuit set for the lesser current limit will limit the output No deterioration of supply performance occurs if the output current remains below the current limit setting 6V Current Foldback The overload and short circuit pro tection circuit for the 6 V output re
41. utputs share a common output terminal which is isolated from chassis ground so that any one output terminal can be grounded All outputs are protected against overload and short circuit damage The 20 V outputs are protected by circuits that limit the output current to 11096 of its nominal maximum The over load protection circuit for the 6 V output has a current fold back characteristic that reduces the output current as an overload increases until only 1 amp flows through a short cir cuit The 6 V output current limit depends on the output termi nal voltage and varies linearly between 2 75 amps at 6 volts and 1 amp at zero volts All controls digital meter and output terminals are located on the front panel One voltage control sets the 0 to 6 V and another sets the voltages of the O to 20 V and 0 to 20 V outputs simul taneously These dual tracking outputs are made more versatile by providing a tracking ratio control in addition to the usual volt age control With the tracking ratio control turned fully clockwise to its fixed position the dual outputs have a fixed 1 1 tracking ratio As the 20V voltage control is adjusted the voltage of the negative supply tracks the positive output within 196 Turning the tracking ratio control away from its fully clockwise position Switches the dual tracking outputs into a variable tracking ratio mode In this mode the voltage of the negative output can be set lower than that of the positiv
Download Pdf Manuals
Related Search