Contents
Technical data…….……………………………....………3
Switches and connectors…....…………………………….3
Operation principle………………………………………4
Simplified main circuit diagram…….………...………...5
Main circuit components………………………………...5-8
Control cable connectors………………………………...9
Troubleshooting diagram….........……………………….10
Control card A001 layout….…………………...………..11
Control card A001 jumper….....................……………...11-12
Control card A001 leds….………….……………………12
IGBT gate pulse…...……………………………………...13
Voltage over the lower IGBT………….……………....... 14
Voltage after the secondary diode cards….………….....15
Cooling unit control…….............………………………...16
Structure (Kemppi WELDFORCE
TM
4500)……………...... 17
Notes……………………………………………................18
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