Trace/Onan starting [RE-wrenches]

Sun Jul 15 17:38:28 PDT 2001

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>Any tips on paralleling Onan's factory remote or on-unit start switch with
>the SW? Thank you.

Allan at +E

There seems to be variation in the way the Onan remote start works.  Some 
connect a grounded wire to the start and stop wires to initiate the 
function, and others use a hot wire.

My approach is to first test to find B+ and neg, and then to hand connect 
wires to see what does what, and then test the wires coming out of the 
remote rocker switch with a meter to see which does what.  It is a good 
idea to put a small in line fuse between the wiring coming out of the 
generator, when testing it.   After all wires are identified and labeled, 
then I just connect remote start wires and inverter control wires in a 
junction box.

An Emerald 6.3 we hooked up last Fall had no hot wire in the the pigtail 
for the remote.  It was a ground - start and stop system.  This would not 
have been a problem, but we were trying to connect to a "three wire to two 
wire" start control.  The control box required a B+ connection to operate 
the relays.  A separate B+ had to be run to the box.  Nothing in the 
instructions indicated the need to do this.  The Onan tech said that the 
control wiring on the new Emeralds was different than previous models, and 
he had never run across this before, but that is what we would indeed have 
to do to make it work.

Drake

>----- 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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