Re: what alim for my servos

--- In CAD_CAM_EDM_DRO@yahoogroups.com, R Rogers <rogersmach@y...>
wrote:

> 110vac secondary for a 120 volt DC servo? That would be 156 volts

DC due to the RMS. These servos are 4 amp continuous, 20 amp peak. A
20-40 amp drive? at 20 amps they would be a puddle of aluminum. Peak
is bye-bye servo.

>
> To use Gecko's, the power supply should should be around 80 volts

DC at 6 amps. To get that he would need a transformer with a 120vac
primary, 55 volt secondary and va rating of 600 and a 750 va rating
would probably be ok but a little too big. 80 volts DC is 2/3 of the
plated rating which will represent a 1/3 drop in total RPM without
any loss in torque because the neccessary amperage is available.

>
> Fred Smith at IMservice has a toroidal transformer close to this

size for like 48 bucks.

>
> Ron
>
>

Hi,
Thanks for so fast reply But I'm located in Belgium and here , the
main power is 220V AC at 50hertz but I suppose that the values you
gived me are the sames exept for the primary of the transfo that
should be 220V
If I'm right, What should be the value of the "condensator"? ( I
suppose given in micro farads)?

Patrick

>
> Lance Hopper <snaggletto@c...> wrote:
>
>