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Old 05-31-2006, 06:48 PM
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Verboten Verboten is offline
 
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Al - thanks for the reply,

The 3 phase input is color coded Red, Brown, and Black.

The black branches to a KTK-1 fuse (I assume 1 means 1 Amp) and becomes a Green (I don't know why, maybe they didn't have that many wire colors, but it does). The Green and Brown then go to a control transformer that has 4 outputs (8 wires). The Red as far as I can tell goes directly to the 3 phase rectifier. I think that I can see part of the logic power supply on the power board - I'm not sure if it is a switching supply (from the discussions that I've read and viewing other power supplies - it also looks like they got a good deal on the same size capacitor).

Unfortunately there is no fan or terminals for one inside of the drive, I think that an external fan was used to blow through the channel at the back of the drive.

So, If I were to connect the 230 1ph to the Brown and Black and the logic was under voltage that would not cause a problem (if all is well) - it would just not power up, right? If that was the case after trying that could I place another control transformer before the one on the drive to increase (I'm assuming double) the Voltage at that point? - I just double checked the colors of the wires entering the control transformer and noticed that it appears to have another input available, hopefully the one that I would need (I believe that I can check this pretty easily with my multimeter) , but would the extra transformer idea work just in case?

I guess that it would be nice to see if the drive works before I rip it apart (carefully disassemble).

But if all that does not work and I had to (for the sake of a hobby project) control the modules or similar ones that I already have (I think they are IGBT Half bridges) by another method could I use an IR2130 3-Phase Bridge Driver or similar (if there are any)?

http://www.irf.com/product-info/data...ata/ir2130.pdf

Here is a Design Tip pdf from IR for a "3-Phase Bridge Drive With Overcurrent Protection" using the IR2130

http://www.irf.com/technical-info/designtp/dt94-11.pdf

I don't know what type of logic signals it wants for Hin 1-3 or Lin 1-3 but it looks simple and interesting to me. Any ideas on this? Would there be a better/simpler method?

Thanks again,
-Jason
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