MANSON ENGINEERING INDUSTRIAL LTD. SERVICE MANUAL FOR SPS-9400

Transcription

1 MANSON ENGINEERING INDUSTRIAL LTD. SERVICE MANUAL FOR SPS-9400

2 CONTENTS 1. PRODUCTION SPECIFICATION P.1 2. ALIGNMENT PROCEDURE P.2 3. TROUBLE SHOOTING P.5 4. CHANGE OF ELECTRONIC COMPONENTS P.6 5. DIAGRAMS P SCHEMATICS P PCB SILKSCREEN P.9 6. BILL OF MATERIAL P.10

3 1. PRODUCTION SPECIFICATION MODEL: SPS REV. 1.0 DATE: DESCRIPTION: 3-15V 40A SWITCHING MODE POWER SUPPLY INPUT VOLTAGE: VAC FREQUENCY: 50 Hz ENVIRONMENT TEMPERATURE: 25 0 C MIN. TYP. MAX. UNIT Rated Output Voltage Range 3 15 V Max. Output Voltage V Min. Output Voltage 3 V Fixed Output Voltage V Output Current (continue) 40 A Protection Current (start point) A Over Voltage Protection V Voltage Regulation: Load (0~100% load) 200 mv Line (207~254Vac Varition) 50 mv Ripple & Noise (r.m.s) 2 5 mv Ripple & Noise (peak to peak) mv No Load Input Current 380 ma Full Load Input Current 3.5 A Power consumption at 15V 770 W Insulation Resistance (500Vdc) 100 MΩ Withstanding Test (10mA 60s) 2.1 KV Power factor 97 % Efficiency: Loading 13.8V 40A % Loading 15V 40A % Meter Accuracy: Voltmeter ±1%1+1 Dight Ammeter ±1%1+1 Dight Fuse 5 A REMARKS: 1. Rated load is 15V 40A. 2. Insulation resistance is measured as INPUT vs. HOUSING. 3. High frequency interference test (sample 3%). Test frequency : MHz (5W) MHz (5W) Result : No function have been affected. Output Voltage 0.5V Variation.

4 2. ALIGNMENT PROCEDURE Equipment Quantity CRO 1 Digital Multimeter 1 High Frequency Micrometer 1 Electronic Load 1 Adjustable AC Transformer 1 Power Analyzer 1 DC Regulated Power Supply (Max. V>17) 1 Procedures: 1. No Load Input Current Measurement Switch ON the SPS-9400, the Power Indicator Should light up in green, the fan rotates in a low speed. The SPS-9400 Ammeter should display 00.0, the Voltmeter should not display 00.0, the Power Analyzer should display a current of less than 380mA. 2. Voltmeter Adjustment Switch SW2 located at the bottom side of the unit to position FIXED, connect a Digital Multimeter to the output terminal of SPS-9400, adjust RV4 such that the Digital Multimeter display a voltage of ~ 13.84V. Turning the control knob on the front panel will make no change to the output voltage. Switch SW2 to another position, turn the control knob on the front panel to fully-clockwise position, adjust RV2 such that the Digital Multimeter display 15.4 ~ 15.6V, then turn the control knob to fully-counterclockwise position, the Digital Multimeter should display a voltage of less than 3V. 3. Protection Current Adjustment Adjust the output voltage of SPS-9400 to 15V by turning the control knob, turn RV3 to fully-clockwise position, connect the Electronic Load, slowly adjust the loading current to 44.5A. Then, slowly turn RV3 in counter-clockwise until the overload red LED indicator lights up and the output voltage falls suddenly. Afterward, decreases the loading current to 0A, the red light should OFF and the output voltage returns to normal condition. Then, slowly increases the loading current, when the loading current is 43 ~ 44.5A, the overload red LED indicator will light up and the output voltage will fall.

5 4. Power Consumption Test Adjust the output voltage of SPS-9400 to 15V and connect the electronic load with 40A loading current, the Power Analyzer should display an input current of less than 3.5A, power factor of more than 0.97 and input power of less than 770W. 5. Voltmeter Calibration Adjust the output voltage of SPS-9400 to 15.0V, connect the Digital Multimeter to the output terminal of SPS-9400, adjust the variable resistor on the Voltmeter such that the voltage display on the Digital Multimeter is equal to the voltage display on Voltmeter. Then, check that the voltage on the Voltmeter increases as the control knob is turned in clockwise direction. Similarly, check that the voltage decreases as the control knob is turned in counterclockwise direction. Also, the difference between the voltage on Voltmeter and the Digital Multimeter should less than 0.2V. And check that the LED Voltmeter does not have missing segment. 6. Ammeter Calibration Connect the Electronic Load with 40A loading current, adjust the variable resistor of Ammeter such that the Ammeter displays Then, check that the current on Ammeter increases as the loading current on the Electronic Load increases. Similarly, check that the current on Ammeter decreases as the loading current on the Electronic Load decreases. Also, the difference between the current on Ammeter and the Digital Multimeter should less than 0.4A. And check that the LED Ammeter does not have missing segment. 7. Over-Voltage Protection Test Adjust the output voltage of the DC Regulated Power Supply to 15.9V and connect to the output terminal of SPS-9400, then disconnect it and the SPS-9400 is in working condition. Adjust the output voltage of the DC Regulated Power Supply to 16.9V and connect to the output terminal SPS-9400, then disconnect it. The overload red LED indicator of SPS-9400 will light up and the output voltage will fall. 8. Load Regulation Measurement Adjust the output voltage of SPS-9400 to 15V and connect to the Electronic Load with 40A loading current, measure the output voltage by the Digital Multimeter and record the voltage. Then, disconnect from the load and measure the output voltage again. The difference between 2 voltages should less than 200mV.

6 9. Ripple and Noise Measurement Adjust the output voltage of SPS-9400 to 15V and connect to the Electronic Load with 40A loading current. Measure the output terminal by the High Frequency Micrometer and the value should less than 5mV. Connect the output terminal to CRO and the Peak to Peak measured wave form should less than 50mVp-p. 10. Line Regulation Measurement Adjust the output voltage of SPS-9400 to 15V and connect to the Electronic Load with 40A loading current. Adjust the input voltage to 190V and 254V, record the output voltage at these 2 input voltages, the difference between these 2 output voltages should less than 50mV. 11. Loading Test Adjust the output voltage of SPS-9400 to 15V and connect to the Electronic Load with 40A loading current, turn OFF the SPS Then, make sure the Electronic Load has a 40A loading current, turn ON SPS-9400 again and check that the SPS-9400 is ON and the Overload Indicator is OFF. Remarks: 1. The above procedures should be carried out in normal condition, if the SPS-9400 has abnormal condition (e.g. Unpleasant noise, smell, smoke, etc...), turns OFF the AC source at once.

7 3. Trouble Shooting 1. The Power Supply do not turn ON. a. Switch off the unit. b. Check the fuse if it is blown, replace with the same type of the fuse. c. Check the AC Power Cord is firmly plugged into the AC socket of the Power Supply. d. Switch on the unit again if problem persists. 2. Overload LED Indicator light up once the unit is turned ON. a. Check if the loading current is not more than 40A, adjust the loading current of not more than 40A b. Check if the output voltage is not more than 16.5V. The Over Voltage Protection is at 16.5V. c. Check if the output is short circuit. d. Switch off the unit, wait 30 minutes and switch it ON again to see if problem persists.

8 4. CHANGE OF ELECTRONIC COMPONENTS Name of Component Position Before changes After changes Date of Change 1 Electrolytic Capacitor C10,C11 680uF/200V 680uF/250V 14/09/01 2 Auxiliary Transformer TR2 0.23mm/96T 5mm/136T 18/09/01 3 Fast Recovery Diode D2 MUR880 MUR860 18/01/02 4 Metal Film Resistor R9 1.3Mohm 1/4W + 1% 620K1/4W + 1% & 680K1/4W + 1% in series 28/02/02 5 Carbon Film Resistor R13 470kohm 1/4W + 5% Reason of Changes: 1. The voltage of 680uF/200V Electrolytic Capacitor is too low. 240kohm1/4W + 5%& 240kohm 1/4W + 5% in series 2. The 0.23mm/96T Auxiliary Transformer does not match to our design of the SPS When using MUR860, the voltage drop across the diode decreases, thus its temperature is lower. 4. The wattage of the Metal Film Resistor 1.3Mohm 1/4W + 1% is too low. 5. The wattage of the Carbon Film Resistor 470kohm 1/4W + 5% is too low. 28/02/02

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10 DM VDD - OUTPUT<+> OUTPUT<-> OUTPUT<+> D C B A AC FILTER OUTPUT R18 3.9K C18 10UF/50V VREF R28 2K RV2 5K INPUT SW1 12A VCC RV1 10K R R5 470K SW1 12A VAC 50HZ C1 1UF/275VAC R19 10K R20 10K C19 10UF/50V R R L2 100UH L3 100UH R29 1.8K S2 R001 39K R35 1M ZD3 13V/ 1W U4F 4069 C27 1UF 50V OUTPUT<+> OUT1 5 6 R21 56K L1 6.0MH R25 1M R36 4.7K Over Voltage Protetion F1 5A RV4 1K OUTPUT"+" MOV R30 10K R45 4.7K D R31 220K 8 C2 /275VAC U3B 7 C LM324 U4D R32 1K C U4E R K R U4A AC LINE FILTER C PF R C PF R37 33K D BR1 10G4B R26 22K R23 1.5K C22 10UF/50V R27 100K R33 4.7K R38 330K VCC Q4 C1815 Q5 C LED1 RED C C C PF R K 1% R43 3K 8 9 D C NTC1 C79 20S100L 1UF 275VAC C3 3.3/400V C /250VAC VREF VREF R46 47K R K C5 3.3/400V R40 56k U5 TL494 C33 10UF/50V C80 UF 275VAC L7 0.7MH C R24 1.5K LED2 GREEN U4C C24 10UF/50V C25 VREF C23 C31 1UF R R1 1.3M 1% VCC R47 1K R2 12K 1% C7 1UF/50V R3 100K/1W 8 U1 MC34262 R VCC D RV3 5K R48 47K R49 10K Q6 C2120 Q7 A950 Q8 C2120 Q9 A C /1KV C PF/250VAC C PF 250VAC 4 C TR3 DRIVER R4 22K D AC FILTER OUTPUT C8 100UF/50V R R5A 10 R5B 10 D Q1 FP460 R6 330 R7 /2W U3A LM324 1 R R VCC 4 11 C R R R81 1M R TR1 BOOST Q2 FP460 R8 /2W Q10 A950 R Q11 A950 L=140UH R55 10 D R60 10 C34 10UF/50V ZD4 15V D D2 MUR860 ZD5 15V 680K 1% 620K 1% VREF C C R82 47K R9 R10 8.5k 1% Q12 FP460 Q13 FP460 R83 2.4K C10 680UF 250V C11 680UF 250V C41 3.3UF/250V R65 47/3W C /1KV R11 100K/1W R12 100K/1W TR4 M.TR C /630V R84 47/3W C36 220UF/25V R66 15/1W C D15A 20DL2C D15B C C D16A 20DL2C D16B C R67 15/1W 240K 240K VCC Q14 A950 FAN C C R13 R86 22K L5 14UH/40A C U2 TOP222Y R14 15K R UF4005 D3 R87 2.2K C37 TR2 AUX PS ZD1 200V/1W D S C C16 R U3C LM324 8 R88 390K out 1 L6 0.5UH/40A C UF/25V NOTE : ALL RESISTORS ARE IN OHM&1/4W UNLESS SPECIFIED TITLE : SPS SCH INPUT VAC DWG.NO. : HZ DRAWN BY : CHECKED BY : APPROVED BY : D5 RGP10G C /100V C17 47UF/16V 10 9 C38 1UF/50V C D R16 18 ZD2 6.2V Q3 A950 R17 1K C52 C UF 1000UF 0.22 C54 R69 R75 C15 1UF/50V C58 UF L4 3.3UH C13 470UF/25V D R89 9.1K R70 R76 R90 56K R71 R77 C59 100UF 25V VREF C C R72 R78 VCC C14 220UF/25V R91 15K V A M1 M2 C R68 1KV 330/1W R73 R79 * C61 UF C R74 R80 C62 100UF 25V C uF/500V R92 PG-103J MANSON ENGINEERING INDUSTRIAL LTD. SHEET 1 OF 1 REVISION: 1.6 DATE: D C B A

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