Re: Harrison Lathe and Gecko's

85VDC is too high for our drives.

Mariss

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "James Owens"
<wotisname@l...> wrote:

> Hi,
>
> This post is aimed at Mariss but anyone else who can answer is free

to jump

> in.
>
> I have a Harrison 280 CNC/Trainer Lathe with a blown Z amp. The

motor is a

> four wire stepper and the board connections are motor clock, motor
> direction, +85 volts DC @ 10 amps, +24 volts DC, 0 volts and Drive

Enable.

>
> The problem is that the drive is blowing the 2 amp fuse on the +24

volts

> when the machine is powered up. When the X amp is plugged in

nothing blows

> so I assume that is ok.
>
> I cannot identify any of the components on the board except the

logic even

> with the help of the internet and a circuit diagram is out of the

question

> because I don't know the board manufacturer.
>
> Is it possible to use one of you Gecko stepper drives to replace it

with out

> pulling the whole machine apart and starting again?
>
> Regards,
>
> Terry