Lincoln Electric IM10149 POWER WAVE ADVANCED MODULE - Manual (Page 36)

E-3 TROUBLESHOOTING E-3
POWER WAVE® ADVANCED MODULE
Observe all Safety Guidelines detailed throughout this manual
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your
Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.
CAUTION
SteP 2 oPen CIrCuIt
• Withtheoutputdisabled,removeshortfromWorkfromElectrodestudsontheAdvancedModule.
•AttachaDigitalMultiMeteracrosstheWorkandElectrodestudsoftheAdvancedModule.
•Confirmselectionoftestmode208(STTTestMode).
•Enabletheoutput.
Pullingthetrigger,orturnthetrimknobclockwise
NOTE:Ahighpitch“squeal”fromtheAdvancedModuleisnormal.
•ReadthevoltagemeasuredontheDigitalMultiMeter.
aC/Stt
®
FunCtIonaL teSt PreParatIon
Voltage
<70VAC
≥70VAC
Indication / Possible Cause
aC Switch Shorted:
•Faulty or disconnected Differential I/O control signal (grey cable located at rear of
module).
Verify cable connections (including those internal to the module and host
power source).
•ACSwitchShorted (typically accompanied by error 99).
Disconnect and perform aC Switch PCB test.
•LossofActiveSnubberResistors(typically accompanied by error 99).
Disconnect and measure snubber resistors at J5 pin 3 and J5 pin 5 on
g7103 (should be 100 ohms).
normal operation
K2230-1 PF-10M
K1543-XX
TO STT MODULE