AES MM500 [RE-wrenches]

[David Henry]

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William,

I have two of them set up with 6400 watts/ea of PV. Coastal Ca, north 
of SF so I doubt if they'll ever see more than 90 amps (rated to 100) 
but normally should peak at 75 or 80 amps on any given day.  They 
seemed to work fine then one went down in a cloud of smoke, 
literally. Smoke pouring out of the upper half. Mark at AES was 
apologetic and readily agreed to replace the unit. They had seen a 
few with a similar problem. They are in the process of writing new 
software and testing it under high load and high heat conditions to 
ensure there are no repeats. While we were waiting for the 
replacement..... inverter number two developed burning, ozone, smells 
so it's shut down & getting replaced also.

I was originally attracted to MPP charge controls, Zero Current 
battery charge mode and the tidy all-in-one design. Not to mention 
Xantrex was out of the grid tie business at the time (last December 
). I still like the idea but problems below need to be addressed.

Some other problems on the software to be fixed list, promised to be 
out in weeks if not days:

1) Using two inverters to generate 240v single phase (or "split 
phase" as Rob Wills @ AES likes to call it).

2) Allowing two inverters to share a single battery bank eg 24 - 2 volt cells

3)  Allowing the grid or a generator to charge batteries after a 
power outage has drawn down the batteries.

4) Inverter shut down prevents pass through power from getting to 
critical loads.

Website 
<http://www.advancedenergy.com/Software/PC200v1_8.zip>http://www.advancedenergy.com/

David Henry
Harmony Farm Supply
3244 Hwy 116 N.
Sebastopol, Ca 95472
voice 707-823-9125 X14
fax 707-823-1734
david at harmonyfarm.com
www.harmonyfarm.com

>Kids:
>
>I have tried several times to find info on the web regarding the AES MM500,
>without luck.  Anyone know the web address for this?
>
>On a related subject, is anyone using the AES inverters?  How are they
>working out?
>
>William Miller
>
>__________________________________________________________________
>William Miller
>Miller Power and Communications
>PO Box 50, Santa Margarita, CA 93453
>Voice :805-438-5600		Fax: 805-438-4607	VMail: 805-546-4875
>email: wrmiller at slonet.org
>http://millerpowerandcomm.com
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