Re: [CAD_CAM_EDM_DRO] Big Gecko servo question!!

markpowerplus wrote:

> Morning all,
> Yesterday I was given the opportunity to obtain a Mitsui Seiki 4 axis
> machine centre for $500.00, was $300,000 new! It has a dead Fanuc
> controller and has some humungous sevo motors with tachometers to
> drive the axis'. Now what would one do to get it going I ask? If the
> motors are rated within the Gecko servo specs( don't laugh it's just
> a question)( it's just they are so small and the machine is so big )
> could they replace the complete Fanuc control,with appropriate power
> supply, one has to remember this is a very big machine. So what would
> one do? Mariss can you give me any idea?
> Sorry at the moment I do not have the literature supplied with the
> machine but hope to have some specs from it soon.

First, you have to determine the type of servo motor on this machine.
If it is an AC servo, the current Gecko servo drive will not run it. Mariss
is working on an AC drive, but I don't think it will be ready for a while.
Check what servo amps are in the unit. If they take +/- 10 V velocity
command signals, you can use a Servo-to-Go card or my parallel port
motion control card set (see http://pico-systems.com/PPMC.html
for more info) to drive it. Most likely, the servo amps are just boxes
inside the control cabinet. Also, find out what type of position feedback
it has (linear encoder, shaft encoder, or resolver). Shaft encoders may
be inside the servo motors, or separate.

Jon