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Table of contents
Foreword and safety instructions .................................................................................................................. 6
Safety ....................................................................................................................................................... 6
Fronius Technical Support Center (TSC) ................................................................................................. 6
General remarks ...................................................................................................................................... 6
Function overview .................................................................................................................................... 7
Fault location aid ...................................................................................................................................... 7
Detailed description ................................................................................................................................. 7
Changing components ............................................................................................................................. 7
Terms and abbreviations used................................................................................................................. 7
Spare parts list and entire circuit diagram ............................................................................................... 7
Tools and measuring instruments ............................................................................................................ 7
Tools and measuring instruments ................................................................................................................. 8
General remarks ...................................................................................................................................... 8
Tools required .......................................................................................................................................... 8
Measuring and inspection equipment ...................................................................................................... 8
Ancillary materials .................................................................................................................................... 8
Function overview ......................................................................................................................................... 9
Principle of the digital family of machines ................................................................................................ 9
Useful information .................................................................................................................................... 9
Block diagram ........................................................................................................................................ 10
Block diagram legend ............................................................................................................................ 10
Fault location aid ......................................................................................................................................... 12
General remarks .................................................................................................................................... 12
Fault flowcharts ........................................................................................................................................... 13
Overview ................................................................................................................................................ 13
Poor ignition and welding properties with „MIG/MAG welding“ ............................................................. 14
Poor ignition and welding properties with „TIG welding“ ....................................................................... 15
Poor weld properties with „rod electrode (MMA) welding“ ..................................................................... 16
Nothing happens on control panel (TPS 2700) .....................................................................................17
Nothing happens on control panel (TPS 3200/4000/5000) ................................................................... 19
No or incorrect welding current.............................................................................................................. 21
No or incorrect wirefeed speed.............................................................................................................. 22
Insufficient torch cooling (FK 4000/FK 4000 R) ..................................................................................... 23
Service code Err 50 ............................................................................................................................... 25
UST service codes ...................................................................................................................................... 27
Safety ..................................................................................................................................................... 27
Table of service codes ........................................................................................................................... 27
Special displays used with service codes .............................................................................................. 33
Service codes SR 4xA ................................................................................................................................ 34
Safety ..................................................................................................................................................... 34
Table of service codes ........................................................................................................................... 34
Service codes for push-pull calibration ....................................................................................................... 35
Safety ..................................................................................................................................................... 35
Checking actual-value pick-up............................................................................................................... 35
Error codes shown when the drive units are engaged („engaged“ calibration) ..................................... 35
Error codes shown when the drive units are engaged („engaged“ calibration) ..................................... 36
Detailed description .................................................................................................................................... 38
General remarks .................................................................................................................................... 38
Position of electronic components ......................................................................................................... 38
Overview ................................................................................................................................................ 38
ASU 27 - additional PC board..................................................................................................................... 39
General remarks .................................................................................................................................... 39
Component position in the machine ...................................................................................................... 39
Overview ................................................................................................................................................ 39
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