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Re: Sync Two Jags
We split the encoder like this.
A to both.
B to both.
GND to both.
VSupply from only one.
Don't connect the supplies together unless you diode OR them and if you do that use germanium diodes for the low voltage drop across the junction.
We had a little discussion amongst ourselves about how this shouldn't work, but given we've driven the Victor 884s unmatched into CIM gear boxes with a mere gear dividing the 2 output shafts, and given there's reverse protection on both the Jaguars and Victors (in case something turns into a generator) the risks are low.
There is a chance that one Jaguar might drive more of the mechanism load than the other, as they are able to spin each other's armature like this. It shouldn't be too much of a problem and when the load on the mechanism increases they should both start to contribute. This will make tuning them interesting considering that effectively they are both in a state of semi-permanent runaway.
Only thing I will warn you about...we did this for a velocity set point...not position (haven't thought about it the other way) and I strongly advise you to have a single harness handy in case someone thinks the split harness is causing your issues.
Last edited by techhelpbb : 02-07-2011 at 03:00 PM.
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