Table of Contents
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Chapter 1 Summarize ................................................................................................................ 3
1.1 The Working Principle of the AC Drive ......................................................................... 3
1.1.1 Rectifier Bridge ........................................................................................................ 3
1.1.2 Detachable Capacitor................................................................................................ 4
1.1.3 Switching Mode Power Supply ................................................................................ 4
1.1.4 Inverter Module ........................................................................................................ 4
1.2 Common Device Overhaul Method ................................................................................. 5
1.2.1 Detect Diode ............................................................................................................. 5
1.2.2 Detect Triode ............................................................................................................ 5
1.2.3 Optocoupler .............................................................................................................. 6
1.2.4 Static Measurements of Rectifier Bridges ................................................................ 6
1.2.5 Static Measurements of AC Drive Continuity Diodes ............................................. 7
1.2.6 Static Measurement of Brake Units .......................................................................... 7
Chapter 2 Testing and Repairing of Power Supply Boards ....................................................... 8
2.1 Driver Circuit .................................................................................................................. 8
2.2 Brake Driver Circuit ...................................................................................................... 12
2.3 Current Detection Circuit .............................................................................................. 14
2.4 Busbar Voltage Detection Circuit ................................................................................. 16
2.5 Relay Control Circuit .................................................................................................... 18
2.6 Fan Control Circuit ........................................................................................................ 20
2.7 Switching Power Supply ............................................................................................... 22
Maintenance ............................................................................................................................ 27
3.1 Summary of IC Related Information ............................................................................. 27
3.2 Access to Voltage Points on the Control Board ............................................................ 28
3.3 Detection and Maintenance Optocoupler Unit Circuits ................................................ 32
3.3.1 X Input Circuit Detection and Maintenance ........................................................... 33
3.3.2 Y Output Detection and Maintenance .................................................................... 34
3.3.3 Relay Detection and Maintenance .......................................................................... 34
3.4 Analogue Signal Detection and Maintenance ............................................................... 35
AC310 Universal AC Drive Service Manual
Catalog
I
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Table of Contents
