Dear Sirs, Owner of an offset printing machine komori L28 equiped by the "Intelligent" Inverter toyodenki VF64. the machine fail on the morning 4 or 5 times and work normaly during the day. On the table of trouble shooting, led display "iGbt " we would like to know how to check IPM "iGbt" conduction. thanks
iGBT error is normally caused when the cooling fins and/or fans are blocked with paper fibers and dust. The inverter protrudes out the back of the main electrical cabinet towards the feeder. It has a removable cover that is open on the bottom. If you look up under the cover you should see the fans. Make sure they are clean and spin normally. Carefully blow out the cooling fins with compressed air.
In my opinion, this inverter slowly dies. It can damage the main plate. It needs to be repaired asap if you don't want to buy a new one. If you need, I can help you with repairing the inverter. Please send a mail to me - armands.untals@gmail.com Best regards, Armands Untals SIA Roll Graphic
Dear Friend You can try repairing it.I can also supply it. I have 15 years of knoweldge about komori inverters in India and abroad Pls mail me your requirement on printingpressparts@yahoo.com
