Trace/Onan starting [RE-wrenches]

Sat Jul 14 20:53:51 PDT 2001

Most Onan type generator controls are push one to start, push 2 to stop.
Both momentarily ground their respective terminals.  A relay in the Onan
generator does the rest.  Therefore parallel manual switches with SW control
seems to be no trouble.  Advantage is you can start the generator from one
control location and stop it from another, as many manual switches parallel
as you want.  can't do that with a 2-wire control. In two wire parallel
controls, ANY switch turned on starts the generator, but it stops only when
ALL switches are off, so you have to turn it off at the same switch where it
was started, of course.
Either way I don't see where a DPDT is needed because the switches do work
in parallel.

I used to have an Onan.  When they discontinued the CCK cast iron engine
line, we switched to selling Kohler for a cast iron 1800 rpm.  In this case
I liked the 3 wire control's flexibility so well that I built a relay box
with electrically latched relay to adapt my Onan 3-Wire system to the Kohler
2-wire, and I still keep the 2 button controls in home and shop so I can
start from one location, stop from any other.
Steve Willey      Backwoods Solar Electric Systems www.backwoodssolar.com
----- Original Message -----
From: blair Tump may <tump at midcoast.com>
To: <RE-wrenches at topica.com>
Sent: Saturday, July 14, 2001 11:36 AM
Subject: Re: Trace/Onan starting [RE-wrenches]
>
> >Allen , we usually install a DPDT toggle switch (interupting the hot lead
> >to R7/R8 or the remote switch) so that the customer can  bypass the
> >inverter and alows one to use the remote in the event of inverter
failure.
> >Any tips on paralleling Onan's factory remote or on-unit start switch
with
> >the SW? Thank you.
> >Allan at +E
> >----- Original Message -----
> >From: Drake Chamberlin - Electrical Energy <solar at eagle-access.net>
> >To: <RE-wrenches at topica.com>
> >Sent: Friday, July 13, 2001 9:40 AM
> >Subject: Re: Trace/Onan starting [RE-wrenches]
> >
> >
> > > Hi Dave,
> > >
> > > I found my notes from when I talked to Gary at Trace several years
back,
> > > concerning the auto start on the Onan.  The manual that I used is for
> > > Version 4.01.
> > >
> > > The manual stated:
> > >
> > > "For this type of generator, relay RY 8 duplicates the "START"
position
> >and
> > > relay RY 7 is used to duplicate the "STOP" position (using the common
and
> > > normally closed contacts). "
> > >
> > > Gary at Trace told me that the error in the above quotation from the
> >manual
> > > is that both relays must use the common and normally open contacts.
The
> > > generator connected in this way has started (and stopped) reliably
from
> >the
> > > inverter for several years.
> > >
> > > Drake
> > >
> > >
> > > At 03:17 PM 07/12/2001 -0400, you wrote:
> > > >Wrenches,
> > > >This just came in today. I did not do the install, or sell the
equipment.
> > > >Any body have any experience with Onan's and Trace SW remote
starting?
> > > >"Dave - In my house I have a Trace SW series
> > > >inverter/charger. I have two Onan generators, the
> > > >first, 6.3 NHDFB 7512M, propane fueled, the second, a
> > > >JC Industrial Engine, 12.5 Kwatt, 1964 vintage,
> > > >propane fueled, can be converted for gas operation.
> > > >I had the 6.3 NHD hooked up using a 3 wire start
> > > >setup. All the electrical work was done by a licensed
> > > >electrician, who had no previous Onan/Trace
> > > >experience. When I would start the generator via the
> > > >Trace unit. The generator would start no problem but
> > > >as soon as it would start, a grinding noise would
> > > >occur & the generator would shut down. I put 4
> > > >starters into this unit. I then purchased the second
> > > >Onan generator, convinced that the first generator was
> > > >a lemon. I still have the same 3 wire hook up. Now the
> > > >second generator is doing the same thing. The last two
> > > >times that grinding noise has come about, I have
> > > >immediately shut the generator off via the Trace unit,
> > > >& walked out to the generator & started the generator
> > > >via the Start/Stop switch located on the generator. It
> > > >starts fine with no grinding. I would appreciate any
> > > >assistance that you might have to offer. Thank you. - Jim______"
> > > >
> > > >Dave
> > > >
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