SAFETY TERMS AND SYMBOLS
Contents
1. 4 3 1 UNPACKING THE SWITCHING POWER SUPPLY cs dncesosscnasmcascaccusbanneaasansadeunnaanaonaaunageeeacseenaancetsusanansanmaolwaeagoeandesanncdeuseadeieneaceenes 4 E A 10 41 120 125 LINE ATE 4 as ic ce esses sa ates Sass aE aides Sosa RIR een get ser ges Ge T RR eee 5 22 INSTALLATION AND OPERATION ss 5 4 THEORY OPERATION SEE FIGURE 4 11 6 S S CONTROLS AND INDICATORS PET Veg CU EER EU 9 MEI VeRO TUN TER CARRO CRE RS CRER RD AR RN NEI RR 9 OUI EUM ND RR DD 9 6 OPERATION 5 12 o MIU 12. 2 Ro 4 R 55 5 R Figure 6 4 The power supply with remote error sensing protection 17 6 6 Remote Control Short the Remote Control terminal for output ON and open the Remote Control terminal for output OFF 6 7 OVP Setting Firstly adjust the OVP ADJ knob clockwise to the maximum OVP then adjust output voltage to reach the voltage of OVP Secondly adjust the OVP ADJ knob counter clockwise slowly until the OVP message appears Then the setting value of OVP is slightly less than the OVP which you intend to set 18 7 MAINTENANCE WARNING The following instructions are used by qualified personnel only To avoid electrical shock do not perform any servicing other than the operating instructions of the manual unless you are qualified to do so 7 1 Fuse Replacement If the fuse blown the CV or CC indicators will not light and the power supply will not operate The fuse should not normally blow unless a problem has developed in the unit Try to determine and correct cause of the blown fuse then replace only with a fuse of the correct rating and type The fuse is located on the rear panel see Fig 5 2 WARNING For continued fire protection Replace with 250V fuse of the specified type and rating and disconnect the power cord before replacing fuse 7 2 Line Voltage conversion The primary winding of the power transformer is tapped to permit operation from 115 230 VAC 50 60 Hz line voltage Conversion from on
3. damaged if connected to the wrong AC line voltage WARNING To avoid electrical shock the power cord protective grounding conductor must be connected to ground When line voltages are changed replace the required fuses shown below Range Range Fuse 115V 97 133 250V 230V 195 250V T6 3A 250V WARNING avoid personal injury disconnect power cord before removing fuse holder 3 3 Environment The normal ambient temperature range of this instrument is from 07 to 40 C 32 to 104 F Operation of the instrument above this temperature range may cause damage to the circuits Do not use the instrument in a place where strong magnetic or electric field exists as it may disturb the measurement 3 4 Equipment Installation and Operation Ensure there is proper ventilation for the vents in the SPS power supplies case If this equipment is used in a manner not according to the specification the protection provided by the equipment may be impaired WARNING This is a Class A product In a domestic environment this product may cause radio interference in which case the user may be required to take adequate measures WARNING This equipment is not for measurements performed for CAT II and IV 4 THEORY OF OPERATION See Figure 4 1 Block Configuration of SPS System The SPS Series comprise a Bridge rectifier a Pulse Width Modulation a Driver Circuit a Driver Transformer a Rectifier Circuit a Voltage Con
4. 2 timc 15 6 3 CONSTANT VOLTAGE CONSTANT CURRENT CROSSOVER CHARACTERISTIC cccccssccsssccssccssscsscesscessseesscesscessseusscesscenss 15 6 4 OPERATION MODE VOLTAGE OPERATION eg Raps 16 SES LACE BABERE dA PECTORE RE RINDO SODA ERR DR 16 SEES LEUR B ORTOS 18 CENE PATI S dei CNRC 18 LEAN TENAN omc 19 Fo PEE IINE I IdIMENT Tm 19 7 2 LINE VOLTAGE CONVERSION 19 CN Nc dk E O 20 22 1V 1 INTRODUCTION The series of switching power supplies for measuring instrument have ruled out the inconvenience of big volume and heavyweight of a traditional power supply possess The output voltage and current is controlled by two variable resistors with coarse and fine regulation for more handy and precise adjustment Features With more extensive range of input voltage at 97V 133V for 115V and 195V 265V for 230V With high frequency operation can reduce the size of power transformer O With small size light weight and high density power Entire effici
5. 2 Adjustment of the rating Current Qmnunmuouou 1 Set the CURRENT control to HI Set the COARSE and FINE CURRENT controls to minimum fully counterclockwise Set the COARSE and FINE VOLTAGE controls to the center position Connect an external multi meter to measure dc current of output terminal Adjust trimmer VR304 to have a reading 0 00 indicated on the current meter Set the COARSE and FINE CURRENT controls to maximum fully clockwise Adjust trimmer VR303 for a reading on the multi meter to be 20 10A for SPS 1820 10 10A for SPS 3610 and 6 10A for SPS 606 15 1A for SPS 2415 30 1A for SPS 1230 Adjust trimmer VR2 to set the reading value of Amp meter as the same as the one shown on the multi meter Set CURRENT control to LOW Adjust trimmer VR310 to set the reading value of Amp meter as 0 5 times to the rating current Adjust trimmer VR401 to set the OVP value see Fig 7 3 20 Es vI 505 01 1 Fig 7 1 Adjustment Location PS05P02 Fig 7 2 Adjustment Location Fig 7 3 Adjustment Location 2 7 4 Cleaning To clean the power supply use a soft cloth dampened in a solution of mild detergent and water Do not spray cleaner directly onto the instrument since it may leak into the cabinet and cause damage Do not use chemicals containing benzene benzene toluene xylem acetone or similar solvents Do not use abrasive cleaners on any port
6. 25 26 Fuse holder Power socket AC selects switch Fan S sense terminal S sense terminal output terminal output terminal Ground terminal Remote Control OVP ADJ sense terminal M sense terminal Lights when the power is on and in constant voltage operation Lights when in constant current operation For the coarse adjustment of the output voltage For the fine adjustment of the output voltage For the coarse adjustment of the output current For the fine adjustment of the output current Positive polarity Red MAX 3A output only Earth and chassis ground Green Negative polarity Black MAX 3A output only Indicates the output voltage Indicates the output current On Off switch Current indicates HI LO range selection HI range Output current range is from 0 to rating current LO range Output current range is from 0 to half rating current With 115V or 230V voltage and current ranges selection Refer to the diagrammatic instruction to prevent mis operating Cooling fan A positive input voltage remote sense terminal A negative input voltage remote sense terminal Screw type output terminal Screw type output terminal Screw type ground terminal connected to case chassis Short or open the remote control terminal for output on or off Adjust trimmer VR401 to set the OVP value A positive output voltage monitor terminal A negative output voltage monitor terminal Rema
7. ED The wire which is coloured Blue must be connected to the terminal which is marked with th Letter N or coloured Blue or Black IMPORTANT The wires in this lead are The wire which is coloured Brown must be connected to the terminal marked with the letter coloured in accordance with or P or coloured Brown or Red the following code Cocoa If in doubt consult the instructions provided with the equipment or contact the supplier ree Yellow Earth Blue Neutral Brown Live Phase This cable appliance should be protected by a suitably rated and approved HBC mains fuse refer to the rating information on the equipment and or user instructions for details As a guide cable of 0 75mm 2 should be protected by a 3A or 5A fuse Larger conductors would norm require 13A types depending on the connection method used Any moulded mains connector that requires removal replacement must be destroyed by rer of any fuse amp fuse carrier and disposed of immediately as a plug with bared wires is hazarc if a engaged in live socket Any re wiring must be carried out in accordance with the inform detailed on this label EC Declaration of Conformity We GOOD WILL INSTRUMENT CO LTD No 7 1 Jhongsing Rd Tucheng City Taipei County 236 Taiwan GOOD WILL INSTRUMENT SUZHOU CO LTD No 69 Lushan Road Suzhou New District Jiangsu China declare that the below mentioned products SPS 1230 SPS 1820 SPS 3610 SPS 2415 SPS 606 are herewi
8. SAFETY TERMS AND SYMBOLS These terms may appear in this manual or on the product WARNING Warning statements identify condition or practices that could result in injury or loss of life CAUTION Caution statements identify conditions or practice that could result in damage to this product or other property WARNING This equipment is not for measurements performed for CAT Il IIl and IV gt gt gt Measurement category 1 is for measurements performed on circuits not directly connected to MAINS Measurement category Il is for measurements performed on circuits directly connected to the low voltage installation Measurement category lll is for measurements performed in the building installation Measurement category IV is for measurements performed at the source of the low voltage installation The following symbols may appear in this manual or on the product A A GO l DANGER DANGER X ATTENTION Protective Earth ground High Voltage Hot Surface refer to Manual Conductor terminal Terminal FOR UNITED KINGDOM ONLY NOTE As the colours of the wires in main leads may not correspond with the colours marking This lead appliance must only identified in your plug appliance proceed as follows be wired by competent persons The wire which is coloured Green amp Yellow must be connected to the Earth terminal marke WARNING with the letter E or by the earth symbol coloured Green Green amp Yellow THIS APPLIANCE MUST BE EARTH
9. ature If exceeding 40 C please refer to the drawing shown as 3 of next page 12 3 Output Current Temperature Cure Line Chart 100 Output Current 507 90 10 20 30 40 50 00 Environment Temperature 13 4 Output Test lead Selection The Selection of Output Test Lead and Feedback Test Lead For safety assurance please select the adequate output test lead according to the following list Conductor Maximum Permissible Component Cross Section Area Outer Conductive Current pc mm mm paced Resistor A amp km 24 11 0 16 Po 17 0 16 L wi os 095 Remark 1 The ambient temperature of Permissible Current is at 40 C withstanding temperature of conductor is at 105 C according to the condition of the distributed single wire 2 The permissible current listed as above is suggested to be used under 7090 3 If the feedback test leads in need the level above UL CSA AWG24 22 20 can be accepted Besides when the load is a capacitive load please use the twine wire by twisting output test lead with S feedback test lead Same way used on output test lead and S feedback test lead 4 When the current value exceeds above suggestive list can select more wires used in parallel according to above list 14 6 2 Setting Current Limit 1 Determine the maximum safe current for the device to be powered 2 Temporarily short the and terminals of th
10. covery response Please refer to figure 6 2 If there is any test lead connected between load and output terminal the best characters of power supply can not be shown up on the load terminal Power supply P Wn AVoz0 AVoz0 Figure 6 2 The power supply with local error sensing 16 The function of Remote Error Sensing can only be applied to Constant Voltage mode as shown in Figure 6 3 The feedback point of power supply must start from the load terminal directly Therefore the power supply can display its function on the load terminal instead of output terminal To compensate the voltage drop causing from the test lead it needs to shift the voltage from the output terminal of power supply and the voltage on the load terminal remains unchanged A large test lead 1s recommended in order to reduce the voltage drop as less as better on the test lead typical 0 5 maximum Never use the Sense connections without connecting the normal large test lead to output terminal Power supply Figure 6 3 The power supply with remote error sensing Error Sensing Open Protection The sensing circuit must avoid open circuit without equipping with Relay Switch and Connector When the open circuit is occurred abruptly on the sensing circuit it will cause overshoot on the output terminal To prevent this kind of phenomenon add small resistance R1 and R2 or replace with diode as shown in the Figure 6 4 Power supply
11. e line voltage to another is done by change AC selects switch as shown in Fig 5 2 To convert to different line voltage perform the following procedure 1 Make sure the power cord is unplugged 2 Set the AC switch to the desired line voltage position 3 The change of line voltage may also require a corresponding change of fuse value Install correct fuse value according to the instruction shown on rear panel 19 7 3 Internal adjustments The unit was accurately adjusted at the factory before shipment So readjustment is suggested only when the accuracy of circuit is affected by the repair or when you have the reason to believe that the unit is out of accuracy The recommended calibration device is a multi meter with an accuracy of 0 1 dcv or better GOOD WILL model GDM 8145 or equivalent If readjustment is required proceed the following procedure Locations of the adjustments are shown in Fig 6 1 and Fig 7 2 1 Adjustment of the Rating Voltage A B Connect accurate 0 1 external multi meter to measure dc voltage at output terminals of power supply Set the COARSE and FINE VOLTAGE controls to maximum fully clockwise Adjust trimmer VR301 for a reading on the multi meter to be 18 50V for SPS 1820 36 50V for SPS 3610 and 60 50V for SPS 606 24 5V for SPS 2415 12 5V for SPS 1230 Adjust trimmer pot VR2 to set the reading value of voltmeter as same as the one shown on the multi meter
12. e power supply together with a test lead 3 Rotate the COARSE VOLTAGE control away from zero sufficiently to have the CC indicator lightened 4 Adjust the CURRENT control for the desired current limit Read the current value on the Ammeter 5 The current limit overload protection has now been preset Do not change the CURRENT control setting after this step 6 Remove the short between the and terminals and hook up for constant voltage operation 6 3 Constant Voltage Constant Current Crossover Characteristic The working characteristic of this series is called a constant voltage constant current automatic crossover type This permits continuous transition from constant current to constant voltage modes in response to the load change The intersection of constant voltage and constant current modes is called the crossover point Fig 6 1 shows relationship between this crossover point and the load For example if the load is such that the power supply is operating in the constant voltage mode a regulated output voltage is provided The output voltage remains constant as the load increases up until the point where the preset current limit is reached At that point the output current becomes constant and the output voltage drop is proportioned to further increases in load The crossover point is indicated by the front panel LED indicators The crossover point is reached when the CV indicator goes out and the CC indicator is on Cro
13. ency rate higher up to 70 O Auto control the voltage and current mode o Zero adjustment for the output of voltage and current 2 SPECIFICATION 2 1 supply Rating dimension and weight Table 2 1 MAX RATING 115V 230V 15 50 60Hz Switch selectable See Table 2 1 INPUT RATING FUSE STYLE amp RATING WEIGHT Model voltage Current Watts VA usy zo k SIE dv 3A T10A 250V T63A 250V SPS 3610 Dimensions T e x E x 285 D mm connecting power supplies in series to achieve voltage higher than 60V DC totally or 60V WARNING Voltage over 60V DC is a lethal shock hazard to user Be careful when DC between any connection and earth ground Operation Environment Operation Temperature amp Humidity Storage Temperature amp Humidity Accessories Indoor use Altitude up to 2000m Installation Category Pollution degree 2 0 to 40 C 80696 10 to 70C lt 70 Pest Lead current x 1 Operation X 2 2 Constant Voltage Operation 1 Output Voltage ranges from 0 to rating voltage with continuous adjustment 2 Voltage regulation line regulation lt 5mV load regulation 5mV 3 Recovery time 500 s 50 Load change minimum load 0 5 4 Ripple Noise lt 5mVrms 100mVp p tested by 20MHz osci
14. ion of the instrument 22
15. lloscope 5 Temperature coefficient 100ppm C 2 3 Constant Current Operation 1 Output current ranges from 0 to rating current with continuous adjustment 2 Current regulation line regulation load regulation 3mA 3 Ripple amp Noise SPS 606 SPS 3610 SPS 2415 5 5 1820 5 5 1230 2 4 Indicator Meter 1 Voltage Display 3 1 2 Digits 0 39 Green LED display Accuracy 0 5 of rdg 2 digits 2 Current Display 3 1 2 Digits 0 39 Red LED display Accuracy 0 5 of rdg 2 digits 2 5 Over Voltage Protection 1 Over Voltage Protection ranges from 5 rating to rating 5 5 2 OVP Accuracy Vset 1 0 6V 2 6 Insulation Between Chassis and Output Terminal 220 DC500V Between Chassis and AC Cord 230 DC500V 3 3 PRECAUTIONS BEFORE OPERATION 3 1 Unpacking the Switching Power Supply The instrument has been fully inspected and tested before shipping from the factory Upon receiving the instrument please unpack and inspect it to check if there 15 any damages caused during transportation If any sign of damage is found notify the bearer and or the dealer immediately 3 2 Checking the Line Voltage The instrument can be used with line voltages shown in the table below Before connecting the power plug to an AC line outlet make sure the voltage selector of the rear panel is set to the correct position and the proper fuse installed corresponding to the line voltage The unit may be
16. rk As the front panel has 3A current limit and no remote sense terminal it is recommended to use rear output terminal for most of the applications Fig 5 1 Front Panel 10 2 8 8 GG 09 WARNING AC LINE SELECT TOAVOD EUECTRIC SHOCK THE POWER DT PROTECTIVE GROUNDING CONDUCTOR MUST EHI CONNECTED TO GROUND FOR CONTINJED FIRE PROTECTION REPLACE FUSE ONLY WITH 2504 FUSE OF THE SPEGFED TYPE ANO RATING SESVICEARLE COMPONENTS INSIDE REMOVE COVERS REFER SERVICING QUALIFIED PERSONNEL REPLACE FUSE AS SPECIFIED FUSE RATING DISCONNECT POWER CORD BEFORE REPLACING FUSE 500 WATTS SODVA S060 Xx COMPLIANCE WITH 61010 1 REGULATION Fig 5 2 Rear Panel 11 5 OVP 8 5 e 5 33 2 5 REMOTE l CONTROL a D OJO OG 6 OPERATION INSTRUCTIONS 6 1 Precaution 1 AC input AC input should be within the range of line voltage 15 50 60Hz N WARNING To avoid electrical shock the power cord protective grounding conductor must be connected to ground 2 Installation Avoid using the power supply in a place where ambient temperature exceeds 40 The heat sink located at rear of the power supply must have sufficient space for radiation CAUTION To prevent the instrument from damage ensure the working environment is under 40 of temper
17. ssover Point Voltage Range Voltage Output Current Fig 6 1 Constant Voltage Constant Current Characteristic 15 Similarly crossover from constant current to the constant voltage mode automatically occurs from decrease in load a good example of this would be seen when charging a 12 volt battery Initially the open circuit voltage of the power supply may be preset for 13 8 volts A low battery will place a heavy load on the supply and it will operate in the constant current mode which may be adjusted for a amp charging rate As the battery becomes charged and its voltage approaches 13 8 volts its load decreases to the point where it no longer demands the full 1 amp charging rate This is the crossover point where the power supply goes into the constant voltage mode 6 4 Operation mode Voltage Operation Mode Set Power switch to OFF position Make sure that line voltage is correct for the input power voltage Plug power cord into the power outlet Set Power switch to ON position Adjust Voltage and Current control to the desired output voltage and current Connect the external load to the output binding posts Make sure both and terminals are connected correctly gt 6 5 Remote Error Sensing A normal power supply can perform its best load regulation line regulation low output impedance and low output ripple and noise as well as the rapidly transient re
18. th confirmed to comply with the requirements set out in the Council Directive on the Approximation of the Law of Member States relating to Electromagnetic Compatibility 89 336 EEC 92 31 EEC 93 68 EEC and Low Voltage Equipment Directive 73 23 EEC 93 68 For the evaluation regarding the Electromagnetic Compatibility and Low Voltage Equipment Directive the following standards were applied EN 61326 1 Electrical equipment for measurement control and laboratory use EMC requirements 1997 A1 1998 A2 2001 55011 1998 Class Radiated Emission ES SS SS ee REIN Low Voltage Equipment Directive 73 23 EEC amp amended by 93 68 EEC Low Voltage Directive IEC EN 61010 1 2001 Current Harmonic iii CONTENTS Pio NEM y 22 1 FA Ly 12118 mE 2 LOB gon 2 Ze I CONSTANT CURRENT PERATION OO re A 3 ad INDICATOR 218101 22 ENAA EAEE EE EAEAN EA EENE EAEE EEEN EENE ENA AENEAN ainena 3 T 3 ONE YI C EROR 3 3 PRECAUTIONS BEFORE OPERA TION
19. tput of Reference voltage Please refer to the following formula R311 R313 R313 If Vref 10V R311252 3k R313 20kQ 52 3k 20k 210 72 3k 23615V 20k 20k And the R316 R317 C313 C314 and C315 are compensated circuits for voltage frequency Vout Vref Vout Vref 3 Current Adjusting Circuit R326 100k i ifi i 28401 0302 is an Error Amplifier with gain at R342 357k Iox R341x A 10V Vpinl2 Vpin13 R321 4 R322 VR303 For example SPS 1820 Io220A gt R341 10mQ Vpin12 IoxR341xA220x0 01x28 0125 602V 7 Figure 4 1 Block Diagram BRIGED Us 115U 238U RETIFIER PULSE WIDTH DRIVER DRIVER MODULATOR CIRCUIT TRANSFORMER RETIFIER CIRCUIT VOL TAGE T CONTROL CONTROL CIRCUIT CURRENT SHUNT CURRENT ADJUST CIRCUIT OUTPUT FILTER ERROR AMPLIFIER BUFFER CIRCUIT METERING CIRCUIT 50 AUXILIARY OLTAGE SWITCHING ADJUST CIRCUIT 18U REFERENCE CIRCUIT SUPPLY 15U 5 PANEL CONTROLS AND INDICATORS 5 1 Front panel 1 2 3 4 5 6 CV Indicator CC Indicator Voltage coarse Voltage fine Current coarse Current fine output terminal GND terminal output terminal Meter Meter Power control Current HI LO control 5 2 Rear panel 14 15 16 17 18 19 20 21 22 23 24
20. trol Circuit a Current Shunt an Output Filter a Voltage Current Adjusting Circuit a Buffer Circuit an Error Amplifier an Opto Isolator and an Auxiliary Switching Supply and etc Component List for each circuit configuration Bridge Rectifier BD101 Pulse Width Modulation U102 Driver Circuit T104 Q105 Q108 Driver Transformer T301 Rectifier Circuit D301 D3011 Voltage Control Circuit Q303 Current Shunt R341 Output Filter Common Choke L302 C325 Voltage Current Adjusting Circuit U302 Buffer Circuit U302 Q301 Error Amplifier U301 U303 Opto isolator U304 Auxiliary Switching Supply U201 U202 T201 OVP U401 U402 Remote Control RL401 D402 Description of Circuit Theory 1 10V Voltage reference circuit Start up the circuits of R306 and D302 to ensure the output voltage of OPA U301 PIN 1 is in positive status when power 15 on At this moment the output voltage of PIN will pass through R307 to maintain the voltage of both ends of ZENER DIODE ZD301 6 2V to 6 2V As OPA has the character of false short circuit so U301 PIN3 6 2V refer to the VR301 R304 R305 262 01 4 99 10 10V R305 10 Vref 6 2 following formula Therefore the OPA s output voltage can be changed by adjusting the VR301 as shown in the following formula Vrefz10V VR301 1 14kQ 2 Voltage Adjusting Circuit The R311 and R313 are voltage feedback attenuating resistors while R312 is to control the ou
Download Pdf Manuals
Related Search