Re: G201-IP

Jan,

This might be interesting to you. I personally test each and every
drive that goes out the door. The drives go thru 2 test sequences;
low stress and extreme stress. Low stress is at 24VDC on a fine Sanyo-
Denki 2A/phase motor. The supply is current limited to 1.5A. No
matter what is wrong with a bad drive, this setup does not harm it.
It has never killed a drive out of the 40,000 that have passed thru
this part.

Once a drive passes the 24VDC, 2A test, a switch is thrown that
changes everything. Now the test drive is hit with a 100VDC power
supply while connected to a 7A PacSci NEMA 42 motor. Here one out of
50 surviving drives tested smokes. Sometimes bigtime. The 100VDC
supply (a Sorensen 120VDC, 25A 19" rack-mount lab supply) literally
kills the failures. The dead ones never ship.

Mariss

--- In CAD_CAM_EDM_DRO@y..., JanRwl@A... wrote:
> Mariss:
>
> Knocking on wood, perhaps I should NOT enter my 2-bits' worth in
this regard:
>
>
> Generally, I have "never" blown a fuze nor a semiconductor of
value, as I use
> common sense (primarily the only kind I have, being
> academically-challenged!). So far, I have used only TWO G210's
(same as the
> G201 as far as this point goes, I think), in an application-
specific plotter
> I built for a customer in Ohio.
>
> Being basically a klutzy dolt, I had "tacked" stepper-wire-ends to
the
> terminals for a "try and see" run, and had stripped far more length
of
> insulation off the wire-ends than the space between these terminals
to which
> the motor was connected. Then, in my [deleted]ing around,
I "bumped into",
> thus cross-shorted two adjacent motor-wires (a "shorted winding").
This VERY
> fortunately ONLY blew the 1.5 A. fuze I was using in the "motor DC
line" from
> the power-supply, though it WAS a "dead short" to the Gecko drive!
Untoward
> utterances deleted, I fixed the temporary connections, put in a new
fuze, and
> tried again, HOPING I hadn't blown anything! The G210 was OK!
Whew! I was
> very pleased by the "toughness" of the drive, but I guess an up-to-
7-amp
> capability, with a current-set resistor for "1 amp load" installed,
I might
> expect that. But the "dead short" did have me worried
until "second test"!
> Whew!
>
> I will be using more G210's in the future (assuming I get orders
for more
> simple PC-controlled application-specific toys)!
>
> Jan Rowland, aging klutz
>
>
> [Non-text portions of this message have been removed]