Cebora PLASMA SOUND PC 70/T Manual De Servicio página 36

CEBORA S.p.A.
GENERAL INFORMATION ........................................................................................................................... 37
1
Introduction ................................................................................................................................................. 37
1.1
General warnings ....................................................................................................................................... 37
1.2
Safety information ...................................................................................................................................... 37
1.3
Electromagnetic compatibility .................................................................................................................. 37
1.4
DESCRIPTION OF THE SYSTEM ............................................................................................................... 38
2
Introduction ................................................................................................................................................. 38
2.1
Technical specifications ............................................................................................................................ 38
2.2
Description of power source Item No 334 ............................................................................................. 38
2.3
- MAINTENANCE. ......................................................................................................................................... 43
3
- Periodic inspection, cleaning. ................................................................................................................ 43
3.1
- Operating sequence (fig. 3.2.1). ............................................................................................................ 43
3.2
3.2.1 - Power source controls and signals. ................................................................................................... 43
3.2.2 - Power source operation. ..................................................................................................................... 44
- Troubleshooting. ...................................................................................................................................... 46
3.3
3.3.1 - The power source does not start, LCD display (N) off. ................................................................... 46
3.3.2 -Power source powered up, LCD display board (N) on, fan (28) off. .............................................. 48
3.3.3 - The start pushbutton produces no effect. ........................................................................................ 49
3.3.4 - No gas emerges from the torch. ........................................................................................................ 50
3.3.5 - Pushbutton pressed, pilot arc does not ignite ................................................................................. 51
3.3.6 - Irregular pilot arc ignition, unstable pilot arc. ................................................................................... 52
- Error messages on LCD ......................................................................................................................... 53
3.4
3.4.1 Err 30: [no message displayed on LCD] .............................................................................................. 53
3.4.2 Err 50: [Torch protection disengaged]. ................................................................................................ 53
3.4.3 Err 51: [No torch recognition at power up] .......................................................................................... 53
3.4.4 - Err 53: [Start button pressed at power up]. ...................................................................................... 54
3.4.5 - Err 55: [Electrode end-of-life detection] ............................................................................................ 54
3.4.6 Err 67 [AC supply voltage out of range]. .............................................................................................. 54
3.4.7 Err 74: [High temperature of the IGBT group]. .................................................................................... 55
3.4.8 Err 78: [Gas inlet pressure low]. ............................................................................................................ 56
3.4.9 Err 79:[Gas inlet pressure high]. ............................................................................................................ 56
3.4.10 Err 80: [no message displayed on LCD] .............................................................................................. 56
3.4.11 Err 14: [no message displayed on LCD] .............................................................................................. 56
COMPONENTS LIST .................................................................................................................................... 57
4
Exploded view ............................................................................................................................................ 57
4.1
- Components table. .................................................................................................................................. 57
4.2
5 WIRING DIAGRAMS .................................................................................................................................... 58
Power source Item No 33400 ................................................................................................................... 58
5.1
Power source Item No 33495 ................................................................................................................... 58
5.2
- Filter board (7) code 5602595. .............................................................................................................. 59
5.3
- IGBT board (30) code 5602085. ............................................................................................................ 61
5.4
- Secondary winding board (32) code 5602210 .................................................................................... 62
5.5
- Panel board (57) code 5602083. ........................................................................................................... 63
5.6
- Control board (48) code 5602584. ........................................................................................................ 65
5.7
TESTING AN IGBT MODULE ...................................................................................................................... 67
6
Check for shorted IGBT ............................................................................................................................ 67
6.1
Turn on Q1, Q2 ........................................................................................................................................... 67
6.2
Turn off Q1, Q2 ........................................................................................................................................... 67
6.3
TESTING AN DIODE ISOTOP MODULE.................................................................................................... 68
7
Check for shorted diode ........................................................................................................................... 68
7.1
Check for good diode ................................................................................................................................ 68
7.2
3302341
CONTENTS
36
10/07/2019