Thread: FUJI VFD schematics

Hi to all from new member, this is my firts post here.
Have a MIYAMO lathe with a problem. The spindle VFD has given up life.
I am pretty well versed in electronics and would like to repair it.
FUJI ELECTRIC, FRENIC 5000G2, 8kVA
Type is RKNNG 809-22 Ser no HHE 66597R001-16H.
When starting it trips immediately on " OVERVOLTAGE" I have gone thru w/o schematics and the DC storage capacitor is faulty, has less than 0,1 % of rated capacitance ( should be 3300 microF/ 400V ) and I will replace and try the VFD out. However, a schematic would be most welcome. Can anybody give hints where to find?
Have contacted FUJI thru their site, but nothing doing.

Best regards

Ola from Sweden

Best you might find is the drives data sheet - installation instructions with a block flow type diagramme, no company's give out schematics any more, as much for intellectual property rights as litigation risks.

Hello and thanks. As for intellectual property rights, the stuff is more than 25 years old, so the risk that anybody would use this in a competitive manner to compete with a clone is quite remote. And regarding litigation , there is no real difference between replacing a broken off screw compared with a broken electronic component!
To me it looks more to be a case of locking out the educated competition. And this is about the same attitude as the home electronics mfr has.
I will continue to hope that somebody on this excellent forum has info to help me out.

Best regards .

Ola

Repaired. Brains, education and temerity were used. Have lots of some and enough of other of the three.
And the Intellectual Property Rights and also the litigation risks would be handled by Mr Havermayer, my favorite Ernie goon.
I guess pumping a bike tire will soon be outlawed.
Heribert

HP is the same way. They don not release schematics on obsolete equipment.

Originally Posted by rons

HP is the same way. They don not release schematics on obsolete equipment.

Are you talking about the modern HP computers and printers or HP (now Agilent) test equipment?

You can download complete service manuals for almost all test equipment, even very old stuff, from the Agilent website.

- Leigh