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32

 
 

6.2   Fault LED Lights up and No Output 

 
 

FIG. 6.2 

 
 
 
 
 
 
 
 

 

Содержание 3 MS series

Страница 1: ...ut UPS on Battery Mode 13 4 2 Fault LED Lights up and No Output 14 4 3 Input Fuse is Burnt 16 4 4 UPS Fails to Backup when Blackout 17 4 5 No LEDs and No Output 18 4 6 Main Switch off the Fan Still Wo...

Страница 2: ...ower 50KHz PWM sine wave topology yields an excellent overall performance The high crest factor of the inverter handles all high inrush current loads without a need to upgrade the power rating To prot...

Страница 3: ...vailability of power service l Guarantees an exclusive protection against DC damage for inductive load Such as motor based devices entirely eliminating application limitation l Advanced Input PFC cont...

Страница 4: ...button 4 Fault LED Red LED lights up if UPS is faulty 5 Inverter LED a Inverter On Green LED light up b 75 for load battery level 6 Utility LED a AC normal Green LED lights up b 100 for load battery...

Страница 5: ...ac MS1K MS1KR MS2K MS2KR MS3K MS3KR 2 AC Input Fuse 10A 250V 15A 250V 25A 250V 3 External Battery Terminal This is a battery terminal to be connected with additional battery banks for longer backup ti...

Страница 6: ...Vac On Off 120V 240Vac On On 8 DIP Switches 2 For new version of CPU the DIP Switch can be used for Calibration only Not for output voltage selection 1 3 Communication Port Explanation The communicati...

Страница 7: ...7 1 2 3 4 5 6 7 8 9 Pin 6 RS232 Rx Pin 9 RS232 Tx Pin 7 Ground...

Страница 8: ...g Source Circuit Input Power Factor Correction Circuit DC to AC Converter circuit and DC Booster circuit 3 Display MS M9920 x Circuits for LED indicators 2 2 Control Logic Board Block Diagram The main...

Страница 9: ...Circuit Input Power Factor Correction Circuit DC to AC Converter Circuit and DC Booster circuit A block diagram is illustrated as follows 2 4 Display Board Block Diagram The circuitry of Display board...

Страница 10: ...Voltage and Output Power of the UPS 4 Resistance Load Bulb Fixture 700W 1400W 2100W 5 Screw Driver flat type cross type 3 3 Technical Data 3 3 1 Battery Charging Voltage 25 C Set point Model Battery...

Страница 11: ...Voltage Calibration JP4 Default Open for Internal Charger Internal External Charger Selection JP5 Reserved Driver Board MS D9917 x for 1K 2K MSCD0xx for 3K Functions JP1 JP1 Manual PFC Start on Switch...

Страница 12: ...Voltage Balance VR1 Output Voltage Selection SW1 CPU Reset SW2 B Driver Board MSD9917 x or MSADxxx for 1K MSD9910 x or MSBDxxx for 2K MSCDxxx for MS3K Charger Output Voltage VR1 3 7 2 Setting Procedur...

Страница 13: ...00W for MS1K MS1KR MS2K MS2KR And MS3K MS3KR respectively Read the input voltage and battery Voltage from the multi meters connected to see whether they are at The desired 110Vac or 220Vac and 41 4V 8...

Страница 14: ...l the desired one 5 Set the DIP SW1 ON and DIP SW2 OFF then add a resistance load Of 700W 1400W and 2100W for MS1K MS1KR MS2K MS2KR and MS3K MS3KR respectively For an UPS already been set the load is...

Страница 15: ...in front of the UPS Input AC fuse is broken Replace a new fuse with same rating one Input Power Cord is loose in connection Please re connect the loose Input Power Cord properly back to its position...

Страница 16: ...00W Battery voltage is abnormal 1 If the battery voltage is under 28 8V replace the batteries 2 Remove the battery check the charge voltage If the voltage is over 43V the charger circuit is out of ord...

Страница 17: ...nd the driver board is properly done 2 Check if pin1 of U5 HA17393 of the driver board is sending out a square wave of Utility frequency 4 2 2 Fault Status Analysis When the Fault LED lights up you ma...

Страница 18: ...laced too 2 Check Q12 U6 BD1 in PFC circuit fig4 3 If Q12 is abnormal replace both U6 and Q12 3 Check D30 D33 Q15 Q20 and U9 refer to fig 4 5 UPS Output Short Circuit or Overload Remove the output loa...

Страница 19: ...k the related circuit shown in fig 4 5 2 Check if Q15 Q20 D30 D33 of the driver board are defective 3 Check if the U9 SG3525 is out of order 4 Check if the Booster Transformer T2 is open 5 After repla...

Страница 20: ...t off the Utility Remove the control board Supply a 36Vdc to CN5 and CN4 by a DC Power supply connect CN2 to the main switch Push on the main switch and to see if DC POWER i e VDD 17 5V VCC 12V and 5V...

Страница 21: ...er replace the defective devices make sure other parts of UPS is Normal by following the steps below 1 Cut off the Utility Remove the control board Provide 36Vdc to CN5 and CN4 by a DC Power Supply co...

Страница 22: ...Q14 U7 U8 2 Check R118 R120 D24 and D25 NO NO DC fuse is burn UPS MALFUNCTION Q15 Q20 short or low resistance Booster fault 1 Replace Q15 Q20 R109 R110 R123 R124 132 R138 U9 and or F1 2 CHECK D30 D33...

Страница 23: ...R in front of the UPS Input AC fuse is broken Replace a new fuse with same rating one Input Power Cord is loose in connection Please re connect the loose Input Power Cord properly back to its position...

Страница 24: ...24 5 2 Fault LED Lights up and No Output FIG 5 2...

Страница 25: ...ental Temperature is out of windows Over 40 degree C Improve the ventilation and reduce the temperature of the environment BUS Voltage abnormal The PFC control IC U2 or the Booster control IC U9 may b...

Страница 26: ...too 2 Check Q1 U3 BD1 in PFC circuit fig5 3 If Q1 is abnormal replace both U6 and Q1 3 Check D31 D34 Q10 Q12 Q15 Q17 Q19 Q21 and U9 Refer to fig 5 5 UPS Output Short Circuit or Overload Remove the out...

Страница 27: ...25 is normal Cut the Utility Source remove the battery and remove the control board add a 72Vdc to CN10 and CN9 and 18Vdc to the pin 15 of U9 and short JP3 and check if the pin 16 of U9 is 5 1V and pu...

Страница 28: ...off the Utility Remove the control board Supply a 72Vdc to CN10 and CN9 by a DC Power supply connect CN4 to the main switch Push on the main switch and to see if DC POWER i e VDD 17 5V VCC 12V and 5V...

Страница 29: ...place the defective devices to make sure other parts of UPS is Normal please follow the steps below 1 Cut off the Utility Remove the control board Provide 72Vdc to CN10 and CN4 by a DC Power Supply co...

Страница 30: ...D12 and D13 NO NO DC fuse is burnt UPS MALFUNCTION Q10 Q12 Q15 Q17 Q19 Q21 short or low resistance Booster fault 3 Replace Q10 Q12 Q15 Q17 Q19 Q21 R111 R123 R134 R143 148 R154 U9 and or F1 4 CHECK D31...

Страница 31: ...in front of the UPS Input AC fuse is broken Replace a new fuse with same rating one Input Power Cord is loose in connection Please re connect the loose Input Power Cord properly back to its position...

Страница 32: ...32 6 2 Fault LED Lights up and No Output FIG 6 2...

Страница 33: ...vironmental Temperature is out of windows Over 40 degree C Improve the ventilation and reduce the temperature of the environment BUS Voltage abnormal The PFC control IC U2 or the Booster control IC U7...

Страница 34: ...eplaced too 2 Check Q5 U4 BD1 BD2 in PFC circuit fig6 3 If Q5 is abnormal replace both U4 and Q5 3 Check D32 D35 Q12 Q14 Q24 Q27 Q28 and U7 Refer to fig 6 5 UPS Output Short Circuit or Overload Remove...

Страница 35: ...approx 20 30A when it is at full load Please proceed to check any loose connection The IC of DC Booster stage is out of order 1 Check the related circuit is normal as shown in fig 6 5 2 Check if the U...

Страница 36: ...vices To make sure the other parts of the UPS is OK Disconnect the logic board from driver board Cut off the Utility Provide 96Vdc to CN5 and CN6 by a DC Power Supply connect CN4 to the main switch Pu...

Страница 37: ...the fan still remains spinning If so It means Q15 Q16 or Q17 could be defective CPU Shutdown function is out of order Cut off the Utility turn off the front switch then Remove of the battery to see i...

Страница 38: ...R169 R172 D28 D31 NO NO DC fuse is burnt UPS MALFUNCTION Q12 Q13 Q14 Q24 Q27 Q28 short or low resistance Booster fault 1 Replace Q12 Q13 Q14 Q24 Q27 Q28 R101 R105 R115 R142 R152 R155 U7 and or F1 2 C...

Страница 39: ...39 Appendix a 1 Wiring Diagram a 1 1 For MS 1K...

Страница 40: ...N10 CN1 CN2 CN5 CN1 CN6 CN4 CN2 CN3 CN6 Cn8 CN5 CN6 CN8 CN7 CN7 FAN FAN Control Board Logic Board Driver Board Brown Brown Blue Blue AC LINE L L N G N EMI Board OUTLET Display Board MAIN SWITCH BAT BA...

Страница 41: ...41 a 1 3 For MS3K...

Страница 42: ...42 a 2 Placements a 2 1 For MS1K 220V...

Страница 43: ...43 a 2 2 For MS2K 220V a 2 3 For MS3K...

Страница 44: ...44 a 2 3 For MS3K 220V...

Страница 45: ...45 a 2 4 For MS1K 120V...

Страница 46: ...46 a 2 5 For MS2K 120V...

Страница 47: ...47 a 2 6For MS3K 120V file smenu_ms doc...

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