On 2013.04.25 19:55, andy pugh wrote: > On 25 April 2013 15:20, propcoder <[email protected]> wrote: > >> 1. buy and use another servo drives. Mesa 8i20 (2200W 3 Phase Amplifier) > 5i23 + 7i49 + 7i44 + 6 x 8i20 would work (and is very much like my > setup) but that's $1628 (plus, i suspect, tax and import duties) I calculate a difference of only $1215 to $1294 as I count 5i23 anyway (and probably resolver card 7i49 too). I think this will not be too much for my customer. Shipping and import duties will add up, but that's ok.
> Not a cheap option unless you can make money back on the existing > hardware. (PLC Center have a single Reiss IRT listed at $1440, but I > wouldn't read too much into that) > >> Will it be enough, just not at full power > It depends which motor it is, whether you would be losing slew speed > (maybe unimportant) or end up with a robot that can't lift its own arm > (which would be embarrassing) It is the motor which raises main arm (second joint). Regarding 8i20 - I don't understand how 2200W are calculated. Let's take 310V and 15A RMS: 4650W (calculation may be incorrect, but I understand that result may be even bigger). Or take 230V and 15A RMS: 3450W. This would make me 100% happy! Not even talking about 400V. >> 2. reverse-engineer the protocol of existing electronics, copy and use it >> 3. program chips on servo boards to work like I need >> 4. find points where to connect to to control obvious electronics like >> transistor HI/LO inputs, disconnect existing parts and connect mesa >> cards with hostmot2 >> >> What do you think? > I think I would put a lot of effort into 2,3 and 4 before trying 1. ------------------------------------------------------------------------------ Try New Relic Now & We'll Send You this Cool Shirt New Relic is the only SaaS-based application performance monitoring service that delivers powerful full stack analytics. Optimize and monitor your browser, app, & servers with just a few lines of code. Try New Relic and get this awesome Nerd Life shirt! http://p.sf.net/sfu/newrelic_d2d_apr _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
