RE: [CAD_CAM_EDM_DRO] Stepper motor drivers - sugestion

There are various sources that relabel the GS-D200 and put their similar
number on it. Those are great little drivers but require a printed
circuit board. You could just use amp connectors but that makes the
installation a bit messy. The only problems with those drivers is that
they do not have automatic reduced current when not stepping and if the
x axis sync singal fails it could cause the Y and Z axcis modules to
over heat. Here in the states you can get them for about $50. I used to
assemble a three axis cnc unit with those modules and they worked fine
using a 36VDC power supply.
Dan

-----Original Message-----
From: Nigel Bailey [mailto:nigel.bailey@...]
Sent: Monday, December 16, 2002 6:35 AM
To: CAD_CAM_EDM_DRO@yahoogroups.com
Subject: [CAD_CAM_EDM_DRO] Stepper motor drivers - sugestion



All you chaps trying to drive steppers out there, have any of you
considered the SGS Thomson GS-D200 series stepper drivers. Although
there are lots of connections on it They require little wiring, as any
of the control inputs are pulled high when un-connected. They accept
logic level step & direction inputs and give constant current bipolar
outputs (settable by a single resistor or none for the factory default 1
or 2 amps) on a supply of 10-40/48V (use a 12 or 24v transformer,
rectifier & cap to give 36V (24*1.414) unregulated supply, and a 7805
for the 5V) RS components sell them for about £50 each, So they should
be available from other outlets for about half that ! Data sheet is on
the web (search on google under GS-D200S), I have 4 second-hand ones, so
I'll let you know how i get on with them soon. Nigel B



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