Experimental Physics and
Industrial Control System

Heinrich du Toit <[email protected]> · Wed, 14 Nov 2007 11:59:58 +0200

Hi there
We have an Multi-sample ion source of negative ions by Ceium sputtering
for AMS application.

The thing sits at 250kV's

The Power Supplies also sits at 250kV's.

We need to control these power supplies to control the ioc source.
Now the 250kV makes for some problems.
One solution would be to put a PC up at 250kV.. but then you have no
local control (unless you put yourself at 250kV somehow) but only remote
(ssh) access. And there is the danger that a spark or something could
easily kill the PC :(
The other solution is to put the PC down at ground and then communicate
using some fiber-link.

fiber-links are expensive so we would like to only use 1 of them for all
the power-supply units.

So I was thinking maybe RS485 protocol.
Maybe somebody did work on this type of problem already and have
something that could help us?
thanks
-Heinrich

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System