On 11/07/2010 7:16 PM, Chris Radek wrote: > Jon, I have those same resolvers and I use your resolver converter > board. I am pretty sure there are two indexes per revolution. The > gearing is 1:1 so I don't think the original spindle resolver can be > used this way. > > Very interesting! Do you get 8192 counts per rev from that? That would indicate it is a 4-pole resolver. If you only get 4096 counts/rev, then you should get exactly one index per rev. You should note that the index position is only valid when the resolver converter is powered up and left connected to the resolver from then on. If the connection to the resolver is broken at any time, the resolver converter can then find 2 possible solutions, with the index at 0 degrees or 180 degrees. This is documented in the AD datasheet.
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