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Thermal Overload
The threads that wouldn't die...
- PC reliability?
- Windows, real time
- PID loops
- PCs vs. PLCs
- Replacing people
- MS 'monopoly'?
- Software quality
- Where do we go from here?
- Why pay?
- PC reliability?
- Windows, real time
- PID loops
- PCs vs. PLCs
- Replacing people
- MS 'monopoly'?
- Software quality
- Where do we go from here?
- Why pay?
Fortune
Did you know the University of Iowa closed down after someone stole the book?
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from the Automation List department...
Toshiba G7 VFDs
Hello:
We are having trouble with Toshiba G7 VFDs at one of our plants. We have had four separate failures where internal VFD capacitors have blown with the drive consequently failing.
Has anybody experienced similar events?
Regards,
Mark
We are having trouble with Toshiba G7 VFDs at one of our plants. We have had four separate failures where internal VFD capacitors have blown with the drive consequently failing.
Has anybody experienced similar events?
Regards,
Mark
I had a similar problem in another VFD. I found Input supply voltage was high. I think this may be the cause, or if IGBT might have got shorted first while VFD running this can cause the capacitor burst.
From Control Engineering magazine...
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