4795Re: [solectria_ev] AMC320 repair
- Dec 10, 2008Perhaps it would be easier (cheaper and/or less labor) to make a cable to use something like this RS232 to RS485 converter:
or for USB only laptops:
I have not done this yet but would do so before making a complete adapter or paying North American labor rates to fabricate one.
1997 PbA (East Penn) Force
--- On Mon, 12/8/08, Wolf <wolf@...> wrote:
From: Wolf <wolf@...>
Subject: Re: [solectria_ev] AMC320 repair
Received: Monday, December 8, 2008, 7:10 PM
This is the schematic for the cable:
http://www.wolftron ix.com/amc320/ amc_i_cable. jpg
I use an old compaq laptop that still works and has a serial port on it,
it runs windows 98SE.
I could do a layout a circuit board for the adapter... but the cost at the
board house I use are:
$33.00 each, with a min order of 4 boards.
$33.00 for a panel (panel = as many boards as you can fit into 60sq
inches) + $50.00, with min order of 4 panels.
So its MUCH cheaper to just bread board your own, or just solder the parts
to a protoboard.
Unless a bunch of people want them. :)
*wags his tail*
> I will try to look at my 320. In the mean time do you have part numbers
> for the convertor that you are building? I would like to build one as
> well. Also when you reprogrammed did you need to have a particular version
> of DOS that you used and what operating system were you using?
> ____________ _________ _________ __
> From: Wolf <wolf@wolftronix. com>
> To: solectria_ev@ yahoogroups. com
> Sent: Monday, December 1, 2008 7:31:05 PM
> Subject: [solectria_ev] AMC320 repair
> I have recieved a non-working AMC320 motor controller for repair...
> I did not have that much time to look at it over the weekend, (due to the
> holiday), So I just took off the covers and did a visual inspection of all
> the parts and checked the fuses...
> The one thing that looks a bit odd is that the microcontroller seems to be
> missing its firmware... I would expect these two sockets to be populated
> with a "Hi" and "Lo" EPROMs...
> http://www.wolftron ix.com/amc320/ images/PB300070. jpg
> My E-10 is powered by two AMC320s and I have not opened up one of my
> controllers (well, not that part anyway), to look if these sockets are
> populated in mine.
> My AMC320 controllers are probably 2 years later in design, they have a
> one peice cover, which looks to be more difficult to get into.
> I will open one of mine up this weekend to check it out... but in the mean
> time, has anyone had there controller opened up? Did it have these sockets
> populated? I would expect two windowed ceramic EPROMs, or two plastic
> I also can't seem to find my RS485 to RS232 converter, so I will have to
> make another one...
> Thanks for any help.
> Oh, all the pics taken thus far are here:
> http://www.wolftron ix.com/amc320
> Its kind of scary when you look at the high power section... all the
> current for each leg of the 3 phase drive flows thru only 8 tiny MOSFET
> pins... http://www.wolftron ix.com/amc320/ images/PB290067. jpg
> *wags his tail*
> www.wolftronix. com
> [Non-text portions of this message have been removed]
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