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Troubleshooting 6-4 Manual 0-5206
WELDSKILL 200AC/DC INVERTER
TROUBLESHOOTING
6.06 Preliminary check of the main inverter board
!
Read and follow safety information in Section 6.02 before proceeding.
IGBT Testing
Multimeter Lead Placement
Diode Voltage
IGBT T3 &T4
Positive meter lead to testpoint 4
Negative meter lead to testpoint 1
0.2 – 0.8 VDC
IGBT T5 & T6
Positive meter lead to testpoint 3
Negative meter lead to testpoint 5
0.2 – 0.8 VDC
Table 6-3: IGBT’s, Multimeter set to measure Diode Voltage
IGBT Testing
Multimeter Lead Placement
Ohms
IGBT T3 & T4
Positive meter lead to testpoint 1
Negative meter lead to testpoint 4
>150 Ω
IGBT T5 & T6
Positive meter lead to testpoint 5
Negative meter lead to testpoint 3
>150 Ω
Table 6-4: IGBT’s, Multimeter set to measure ohms (Ω)
Inrush PTC
Multimeter Lead Placement
Ohms
PTC
Positive meter lead to testpoint 6
Negative meter lead to testpoint 7
0 to 100 Ω
Table 6-5: Inrush PTC, Multimeter set to measure ohms (Ω)
6.07 Check main input rectifier
Input Rectifier Testing
Multimeter Lead Placement
Diode Voltage
AC1 to DC+
Positive meter lead to testpoint 8
Negative meter lead to testpoint 9
0.2 – 0.8 VDC
AC2 to DC+
Positive meter lead to testpoint 10
Negative meter lead to testpoint 9
0.2 – 0.8 VDC
AC1 to DC-
Positive meter lead to testpoint 11
Negative meter lead to testpoint 8
0.2 – 0.8 VDC
AC2 to DC-
Positive meter lead to testpoint 11
Negative meter lead to testpoint 10
0.2 – 0.8 VDC
Table 6-6: Input Rectifier, Multimeter set to measure Diode Voltage
6.08 DC Bus voltage measurement
Apply voltage to the Power Source.
!
WARNING
There are extremely dangerous voltage and power levels present inside these Power Sources. Do not
attempt to diagnose or repair unless you have had training in power electronics measurement and
troubleshooting techniques.
Once power is applied to the Power Source, there are extremely hazardous voltage and power levels present.
Do not touch any live parts.
Содержание WeldSkill 200AC/DC
Страница 6: ...WARRANTY TERMS INSIDE REAR COVER GLOBAL CUSTOMER SERVICE CONTACT INFORMATION REAR COVER ...
Страница 16: ...WELDSKILL 200AC DC INVERTER INTRODUCTION Introduction 2 2 Manual 0 5206 Notes ...
Страница 40: ...Theory of Operation 5 2 Manual 0 5206 WELDSKILL 200AC DC INVERTER THEORY OF OPERATION Notes ...
Страница 58: ...Troubleshooting 6 18 Manual 0 5206 WELDSKILL 200AC DC INVERTER TROUBLESHOOTING Notes ...
Страница 70: ...WELDSKILL 200AC DC INVERTER DISASSEMBLY PROCEDURE Disassembly Procedure 7 12 Manual 0 5206 Notes ...
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