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BRAND Axpert VM II-3000 Service Manual Download Page 17

SERVICE MANUAL 

Axpert VM II-5000                 

and VM II-3000 

 

17 

 

Parts 

Attribute 

Reference values 

Failure status 

R48/R144/R140/R137 

R139/R145/R150/R152 

Resistor 

47 ohm 

Open or other 

values 

D5/D6/D12/D16

1

 

Resistor 

+ to -: 270k 

- to +: OL 

Short or explosion 

Diode 

+ to -: 0.6V 

- to +: OL 

Note1: 

When test the diode; please remove the R139/R145/R150/R152 from the board, 

ortherwise the test result is not right 

 

Optocoupler: U1/U2/U3/U4/U12 

 

ALL of the optocoupler are (FOD3150ASD SO-8) 

Parts 

Attribute 

Reference values 

Failure status 

U2/U4/U12 

Resistor 

PIN8 TO PIN5: 57k 

PIN7 TO PIN5: 145k 

Short or explosion 

U1/U3 

Resistor 

PIN8 TO PIN5: 355k 

PIN7 TO PIN5: 410k 

 

 

 

 

 

Summary of Contents for Axpert VM II-3000

Page 1: ...SERVICE MANUAL Axpert VM II 5000 and VM II 3000 1 Axpert VM II 5000 VM II 3000 Service manual ...

Page 2: ...n 5 2 3 Test step 6 3 Checking and measuring guide 7 3 1 Check the battery side components on MAIN board 7 3 2 Check the bus side components on MAIN board 13 3 3 Check the buck circuit on MAIN board 14 3 4 Check the INV full bridge on MAIN board 16 3 5 Check BATT and Main Power SPS on MAIN board 18 3 6 Check AC SPS on MPPT board 22 3 7 Check the bus soft start circuit on MPPT board TX1 Especially ...

Page 3: ...ake the board outside and fix the new one Cables connection guide This part will present the signal cables connection of the inverters 1 2 Basic topology introduction The topology of the inverter shows as below Compare with UPS or normal inverter INVERTER combines a solar charger inside Solar charger can be a supplement for battery when there is not grid or for saving energy purpose And with the s...

Page 4: ...r is already installed with anti dusk kit from factory Inverter will automatically detect this kit and activate internal thermal sensor to adjust internal temperature This kit also keeps dusk from your inverter and increases product reliability in harsh environment 1 4 2Clearance and Maintenance Step 1 Please loosen the screw in counterclockwise direction on the top of the inverter ...

Page 5: ...rter then feedback the checking result to the service center It will be very helpful for solving the problem as soon as possible 2 2 Fault condition Note When open the top cover please have a look first are there any obviously damaged parts When take the main board out please have a look around are there any obviously damaged parts 2 2 1 Not working at all No display Description The inverter could...

Page 6: ...e main board by following 3 1 3 2 3 3 3 4 How to solve Repair the main board and MPPT board or replace it directly 2 2 3 56 fault Description Battery couldn t be detected Possible reason Wire connection or fuse was burnt How to check 1 Check the wire connection the priority of the battery cable 2 Check the main board by following 3 1 How to solve Repair the main board or replace it directly 2 3 Te...

Page 7: ...cking and measuring guide 3 1 Check the battery side components on MAIN board Fuse and capacitors F3 FUSE 150A Parts Attribute Reference values Failure status F1 Resistor 0 ohm Open For VMII 5000 C18 C13 C8 6800UF 63V For VMII 3000 C18 C13 C11 C8 4200u 35V ...

Page 8: ...3V DS OL Note1 When you use the multimeter to measure the resistor of the transistor because of the capacitor in the circuit it will cause the changing of the values when you measure the DS and GD So we recommend you measure the diode forward voltage of SD and the resistor of GS These two values can reflect the situation of the transistor more correctly Note2 If one or more of them were damaged pl...

Page 9: ...206 Use multimeter to measure each resistor find the burnt resistors and replace them don t need to replace them all Parts Attribute Reference values Failure status All 22ohm Resistor 22 ohm Open or other values If the resistors need to be replaced please also check the driver transistors and control IC The Q46and Q48 are 2SC2655 2A 50V NPN TO 92 The Q47and Q49 are A1020 2A 50V PNP TO 92 ...

Page 10: ...ure status Q46 Q48 Resistor BE 430k BC 430k EC 16k Short or explosion Diode BE 0 65V BC 0 65V CE 0 28V Q41 Q43 Resistor BE 430k BC 425k EC 104k Short or explosion Diode BE 0 65V BC 0 65V CE 0 28V Q47 Q49 Resistor BE 430k BC 430k EC 8k Short or explosion Diode BE 0 65V BC 1 5V CE 0 20V Q15 Q16 Resistor BE 430k BC 430k CE 100k Short or explosion Diode BE 0 65V BC 1 5V CE 0 28V ...

Page 11: ... SOT 89 The Q51and Q52 are 2SD1624 2A 50V NPN SOT 89 The Q50and Q53 are 2SA1020 3A 50V PNP SOT 89 Parts Attribute Reference values Failure status Q54 Q56 Q51 Q52 Resistor BE 12k BC 280k CE OL Short or explosion Diode BE 0 64V BC 0 64V CE OL Q55 Q57 Q50 Q53 Resistor BE 12k BC OL CE 280k Short or explosion Diode BE 0 64V BC OL CE 1 09V ...

Page 12: ...atus Q60 Q61 Resistor GS 5 637k GD 107k SD 98k Short or explosion Diode SD 0 28V DS 1 14V The U9 is IC PWM CNTL SG3525ANG DIP 16 Parts Attribute Reference values Failure status U9 Resistor PIN13 TO PIN12 8 8k PIN11 TO PIN12 432k PIN14 TO PIN12 432k Short or explosion Note If you are not sure about these components we recommend you replacing them all ...

Page 13: ...ou use the multimeter to measure the resistor of the transistor because of the capacitor in the circuit it will cause the changing of the values when you measure the CE and GE So we recommend you measure the diode forward voltage of EC and the resistor of GE These two values can reflect the situation of the transistor more correctly Note2 If one or more of them were damaged please replace all of t...

Page 14: ... Resistor to 270k to OL Short or explosion Diode to 0 6V to OL Note1 When test the diode please remove the R90 R99 R94 R97 from the board or the test result is not right 3 3 Check the buck circuit on MAIN board Power devices BUCK MOSFET and Diode Q32 D13 For VMII 5000 the IGBTs Q32 is 4063DPBF 48A 600V TO 247 For VMII 3000 the IGBTs Q32 is 45HF60WDA 45A 600V TO 247 The D13 is RHRP1560 15A 600V TO ...

Page 15: ...9V to OL Drivers This part is only used for repair checking The R125 are 47R 1206 The R124 are 10R 1206 The D38 are 1N4148W 0 15A 75V SMD Parts Attribute Reference values Failure status R125 Resistor 47 ohm Open or other values R124 Resistor 10 ohm D381 Resistor to 240k to OL Short or explosion Diode to 0 6V to OL Note1 When test the diode please remove the R124 from the board otherwise the test r...

Page 16: ...l of the IGBT are 4063DPBF 48A 600V TO 247 Parts Attribute Reference values Failure status QA1 QC1 QB2 QD2 Resistor GE 23k GC 235k CE 700k Short or explosion Diode EC 0 4V CE OL Note1 If one or more of them were damaged please replace all of them Drivers R48 R144 R140 R137 R139 R145 R150 R152 47R 1206 D5 D6 D12 D16 1N4148W 0 15A 75V SMD ...

Page 17: ... to OL Short or explosion Diode to 0 6V to OL Note1 When test the diode please remove the R139 R145 R150 R152 from the board ortherwise the test result is not right Optocoupler U1 U2 U3 U4 U12 ALL of the optocoupler are FOD3150ASD SO 8 Parts Attribute Reference values Failure status U2 U4 U12 Resistor PIN8 TO PIN5 57k PIN7 TO PIN5 145k Short or explosion U1 U3 Resistor PIN8 TO PIN5 355k PIN7 TO PI...

Page 18: ...2 are NTC 5ohm 5A For VMII 5000 the MOSFET Q65 are IRF740 10A 400V TO 220 For VMII 3000 the MOSFET Q65 are IRF640NPBF 18A 200V TO 220 For VMII 5000 the R246 are NC For VMII 3000 the R246 are RES 3W 0 15ohm The TX2 are FER EC28 The R245 are RES 3W 0 15ohm The D61 are MUR4100ERLG 4A 1000V UFST The D60 are RHRP860 8A 600V SFST The U14 are IC UC3845BNG DIP 8 The Q6 are PMBT2907A 0 6A 60V SMD The TX3 a...

Page 19: ...GD 44 6k VMII 3000 SD 336K VMII 5000 SD 115K VMII 3000 Short or explosion Diode SD 0 55V GS OL U14 Resistor PIN7 TO PIN5 77K PIN6 TO PIN5 40K Short or other values Q6 Resistor EB 512k CB 456k Short or other values Diode CB 0 69V EB 0 69V VMII 5K TX2 Resistor PIN7 to PIN9 0 2ohm Short or other values VMII 3K TX2 Resistor PIN7 to PIN9 0 5ohm Short or other values TX3 Resistor PIN9 to PIN10 0 3ohm Sh...

Page 20: ...C5353BL 3A 750V TO 126C The U8 are IC PWM UC3845BNG DIP 8 The R203 are RES 5W 0 5ohm The R204 are 100R 1206 The D53 are 1N4148W 0 15A 75V SMD The R67 are 10R 1206 The D3 are MUR460RLG 4A 600V UFST The D49 and D57 are HER303 3A 200V UFST The U7 are IC L7912CV 3P TO 220 The U10 are IC MC78M05CDTRKG DPAK 3 The TX4 are FER EE28 ...

Page 21: ...other values R204 Resistor 100 ohm Open or other values D531 Diode to 0 52V to OL Short or explosion R67 Resistor 10 ohm Open or other values D3 Diode to 0 4V to 0 7V Short or explosion D49 D57 Diode to 0 45V to OL Short or explosion U7 Diode PINI to PINO 0 56V PINO to PING 0 44V PINI to PING 0 45V Short or explosion U10 Diode PINA TO PINI 0 45V PINA TO PINO 0 5V Short or explosion TX4 Resistor PI...

Page 22: ...tor 10 ohm PTC1 Resistor 6 5 ohm D9 Diode to 0 45V to OL Short or explosion REC1 Diode Pin2 to Pin1 0 57V Pin3 to Pin1 0 57V Pin4 to Pin3 0 57V Pin4 to Pin2 0 57V Short or explosion 3 7 Check the bus soft start circuit on MPPT board TX1 Especially for 09 fault The D6 are RHRP8120 8A 1200V UFST The R29 are RES 0 62 J The MOSFET Q3 are IRFBG30 3 1A 1000V TO 220 The D7 and D10 are MUR4100ERLG 4A 1000...

Page 23: ...II 3000 23 Parts Attribute Reference values Failure status D6 Resistor to 212k to OL Short or explosion Diode to 0 45V to OL Q3 Resistor GS 1 17k SD 301k DS OL Short or explosion Diode SD 0 5V DS OL R29 Resistor 0 62 ohm Open or other values ...

Page 24: ...N7 TO PIN5 72k PIN6 TO PIN5 1 21k Short or explosion TX1 Resistor PIN2 to PIN4 2 8ohm PIN7 to PIN9 1 4ohm Short or other values When 09 fault happens and you couldn t find other damage please check TX1 3 8 Check the Boost on MPPT board Power devices Boost IGBT Q1 Q6 and Diode D1 The D1 are 30DQ60BG 30A 600V TO 247 The Q1 and Q6 IGBT are 4063DPBF 48A 600V ...

Page 25: ...3 and D2 are 1N4148W 0 15A 75V SMD The R12 and R50 are 10R 1206 The R52 and R47 are 47R 1206 Parts Attribute Reference values Failure status U1 Resistor PIN8 TO PIN5 355k PIN7 TO PIN5 460k Short or other values D13 D2 Diode to 0 6V to OL Short or explosion R12 R50 Resistor 10ohm Open or other values R52 R47 Resistor 47 ohm Open or other values Note When test the diode please remove the R12 R50 fro...

Page 26: ...ve 12 screws on top cover and rear panel Remove LED cable and LCD cable and take out the top cover Note If you just only need to replace the control board you can replace it at this step Remove comm cable and MPPT Comm cable and Anti dust cable and screw and take out comm board ...

Page 27: ... Remove the plastic screws of wind pipeline Be careful not to damage them You can use an oblique mouth clamp to help you to remove the clip Note Please make sure that put the plastic sheet back and fix well Otherwise it will affect the heat dissipation ...

Page 28: ...SERVICE MANUAL Axpert VM II 5000 and VM II 3000 28 Remove I P and O P cables Remove AC SPS cable and MPPT power supply cables Remove the fan cables ...

Page 29: ...SERVICE MANUAL Axpert VM II 5000 and VM II 3000 29 Remove PV IN cable and SW cable Remove BUS cable and BUS soft cable MPPT NTC and Converter NTC and INV NTC ...

Page 30: ...M II 5000 and VM II 3000 30 Remove 16 screws on main board and MPPT board and take out the main board and MPPT board Total wiring diagram Note Wrong connection of wires may cause inverter damage Please connect wires with care ...

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