I recommend Rutex drivers.

[vacpress]

Hey benny

are you gonna use those servos on your shopbot clone? have you considered the difficulty of directly linking a servo to a rack and piniion gear?

you are going to need some reduction! like 4:1 upto 10:1? gearboxes? what are you thinking?

[ynneb]

Vac, I,ve descided to use belts.

Routerman, It was a prevoius post of yours about the gecko error that made me descide to use Rutex.
Thanks for the tip.

[Bob Quale]

I am working on the same setup but with the 200V 40Amp drives. Any idea where I can get a heat sink?

Bob

[ynneb]

Heat sink is easy to get from any electronics store.
I was lucky and bought mine from a scrap metal outlet at scrap cost.

[trubleshtr]

benny how's your rutex and ametek set-up coming along?
I received my ametek motors, they came with the renco encoders on them
I am still deciding on using the rutex boards vs the gecko's as I already have a pc interface board from axxus technologies. I looked at the rutex set-up and got a little confused with wiring?
Was just wondering how your set-up was working out for you?

[ynneb]

Trubleshtr, I am mainly concerntrating on the steel work building of the machine at the moment.

I got the servos working and put them aside to work on the machine so I could mount them.

If Rutex loses sales I suspect it is not on its preformance but on the strange way they have drawn the wiring guide. It confused me at first, but in actual fact the drawing you are looking at in the pdf, has little to do with what you need. I originally though the drawing was some way of splicing different connections into a printer cable. The drawing is infact of the mother board. All you need to do is connect a priter extension cable from your computer to the the Rutex mother board. The other outlet is for all the limit swithes. If you get the relay board that will also control things like turning on the router and trurning on the spray, etc.

I cant talk from experience but routerman abandoned Gecko for Rutex because of its low fault handling.
The higher amperage rating on the rutex setup also convinced me. I will at some stage do a better drawing of the way Rutex should be set up. Its a pity that they dont do a better drawing them selves, as I am sure it confuses others too. If you do go down the Rutex track I will make sure you wont get stuck.

[trubleshtr]

thanks ynneb, I think I will most likely go down the rutex road.....
I am trying to find out from renco encoders exactly what kind of encoder I have on these ametek motors I dont see it listed on their web site. I purchased a separate pc break out board from axxus technologies and I am trying to figure if it will work with the rutex drivers.......
I think I'll use mach2 for software and build my frame from aluminum extrusion $$$$$
thanks for your advice

[ynneb]

I guess if you bought the servos from Kevin like I did then you will have the same encoders. I have the wiring list for them. Yes they dont exist on the renco site. I think they are old stock.

What do you mean break out box? Is that a substitute for the relay card on the Rutex setup?

[trubleshtr]

Hi yneeb, sorry for the tardy reply, I bought a parallel interface board and want to use it instead of the mother board from rutex as it gives me more input and out put capabilities. I was trying to find out if I could use it with the r990h rutex drives, which it seems I can.

[ViperTX]

I'm thinking of going with Rutex to drive my servos. What I like about them is that I can see the parts and possibly even repair them. I've got a question for those with the Rutex Servos boards.....what bridge chip are they using....also I don't see the MOSFETS on the board...do they use N-Channel MOSFETS? Thanks, Paul

[rutexus]

Paul,

The Rutex boards use MOSFETS. They are sandwiched between the pcb and the black anodized aluminum plates the pcb's are mounted to.