Hypertherm Powermax 125 Service Manual

Powermax125 Service Manual 808070 11
Contents
FineCut consumables .......................................................................................................................................................... 96
FineCut – mild steel ............................................................................................................................................................. 97
FineCut – stainless steel ..................................................................................................................................................... 98
7 Mechanized Cutting ................................................................................................................... 99
Connecting an optional remote-start pendant ....................................................................................................................... 99
Connecting the machine interface cable .............................................................................................................................. 100
Machine interface pinout ................................................................................................................................................... 102
Setting the five-position voltage divider ........................................................................................................................ 103
Accessing raw arc voltage ....................................................................................................................................................... 104
Connecting an optional RS-485 serial interface cable ..................................................................................................... 104
Serial port cables ................................................................................................................................................................ 105
Using the machine torch ........................................................................................................................................................... 105
Setting up the torch and table ................................................................................................................................................. 105
Understand and optimize cut quality ...................................................................................................................................... 105
Cut or bevel angle .............................................................................................................................................................. 106
Dross ..................................................................................................................................................................................... 106
Piercing a workpiece using the machine torch .................................................................................................................... 107
Common machine-cutting faults ............................................................................................................................................. 107
8 Troubleshooting and System Tests ..................................................................................... 109
Controls and indicators ............................................................................................................................................................. 109
Rear panel ............................................................................................................................................................................ 109
Front panel ............................................................................................................................................................................ 110
Status screen ............................................................................................................................................................... 110
Theory of operation .................................................................................................................................................................... 111
480 V and 600 V CSA 3-phase power supply functional description .................................................................. 111
400 V CE, 380 V CCC 3-phase power supply functional description ................................................................. 111
Sequence of operation ...................................................................................................................................................... 112
Troubleshooting preparation .................................................................................................................................................... 113
Test equipment .................................................................................................................................................................... 113
Troubleshooting procedures and sequence ................................................................................................................. 113
External inspection .............................................................................................................................................................. 115
Internal inspection ............................................................................................................................................................... 115
Initial resistance check .............................................................................................................................................................. 115
Check the power switch ................................................................................................................................................... 115
Hypertherm IGBT tester .................................................................................................................................................... 118
Indicator LEDs and device tests ..................................................................................................................................... 119
IGBT test preparation ........................................................................................................................................................ 119
IGBT device test using the Hypertherm tester ............................................................................................................ 121
Troubleshoot the Hypertherm IGBT tester ................................................................................................................... 121

Hypertherm Powermax 125 Specifications

General

Brand	Hypertherm
Model	Powermax 125
Category	Welding System
Language	English