Dual SW4048 Software [RE-wrenches]

Nick Nicholas, APS APS at SBCGLOBAL.NET
Sat Dec 28 21:39:26 PST 2002


Hi
One way to know what revision software is in the 4.2 SW is:
    - With the inverter on, go to menu heading 3, Trace Engineering
    - Scroll down to where the display reads Rev. 4.2
    - If the software is the most current, the display will also read "SW
Series"
SW Inverters manufactured after 08/02 should have current software.

Alternative Power Systems
www.alternativepowersystems.com
aps at sbcglobal.net
135 Colfax Ave.
Grass Valley, CA 95945
(530) 274-0588 phone
(530) 274-0589 fax
----- Original Message -----
From: "David Palumbo, Independent Power & Light" <ipl at sover.net>
To: <RE-wrenches at topica.com>
Sent: Saturday, December 21, 2002 2:12 PM
Subject: RE: Dual SW4048 Software [RE-wrenches]


> Jeff,
> What error message are you getting with your problem system?
>
> My situation here is that the master inverter (starts and stops gen) on
this
> PP(2)SW4048 system shuts off immediately after a charge cycle is completed
> the inverter goes to float and the gen shuts down. The error message is
> "Relay Failure". Which Xantrex says is a software problem with Rev 4.2
>
> Best,
> Dave
>
> -----Original Message-----
> From: Jeff Yago [mailto:jryago at earthlink.net]
> Sent: Saturday, December 21, 2002 9:40 AM
> To: RE-wrenches at topica.com
> Subject: RE: Dual SW4048 Software [RE-wrenches]
>
>
> This may not be a software problem.  What is the RPM of your generator?
We
> installed the exact same off grid system and had no problems for four
years
> using the 1800 RPM version of the Kohler 8.5 generator.  Then the
generator
> gave out and the owner replaced it on his own with the same 8.5 size model
> but having the 3600 RPM engine.
>
> The shut down problems started immediately after that.  It appears the
> higher speed engine has less low end torque, and cannot adjust its speed
to
> meet the fast load changes from the inverter, causing "error" messages and
> shutdown.  It has been a real problem trying to do an equalize charge
after
> the generator change out.  We have tried to re-program setpoints on the
> inverter to show less generator capacity, but the problem is still around.
>
> Jeff Yago
>
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