Re: (ET) wiring diag help needed...

["Dave & Deb" <daveb drizzle com>]

Thanks Ralph,  nice diagram!  I've printed it off and will study it.

my machine is an E12S and the correct page/diagram for it is 3-3 and 3-4,
if I remember right.  anyway it's labeled for model E12S

could you clarify your warning below...

>DO
> NOT CONNECT THE POWER LEADS TOGETHER.  NOTHING IS GROUNDED.  There is no
> momentary contact to stop the motors, the MOTOR LEADS are connected
> together when it is turned off by the PTO contactor.

I don't think I've done that.  that is if you mean don't bypass the the
contactor.  I have wire 2 going from the main disconnect switch to the
PTO, wire 3 from the PTO to the plug, wire 20 from the PTO to the plug and
wire 24 the third wire on the plug or socket goes down to the shunt's
battery negative.   My PTO switch does indeed have 3 wires (STDP ???) But
I only use 2 of them, wire 23 brings power to the switch and it goes out
wire 27 which I routed to the PTO. I "snipped" wire 26 and don't use it. 
26 and 27 used to go to the circut card thence down to the PTO via wire
34.

I didn't take the old PTO contactor off.  It's an "open" design not sealed.
I don't understand how the motor braking works but the motors did stop
right away.  I wonder if that's when the controller got smoked?

Dave

> I do not have page 5-23, but when I installed my AllTrax I took out
> 99.9% of the wiring and started over.  It looked to confuseing to just
> remove the right wires.  My mower motors brake when I shut then off.  DO
> NOT CONNECT THE POWER LEADS TOGETHER.  NOTHING IS GROUNDED.  There is no
> momentary contact to stop the motors, the MOTOR LEADS are connected
> together when it is turned off by the PTO contactor.  It is possable to
> mix up the leads to the PTO plug at the PTO contactor and cause a short
> when it is off.   Look at my web site (the wiring page Ladder Diagram.
> http://ralphgv.tripod.com/   Line 106 is the PTO contacts  (A normally
> open, B normally closed) There is a bus bar connected on the back of the
> contactor, leave it on.  Line 109 shows the coil connections for the PTO
> contactor, a safety plug that you don't need, the PTO dash switch, (your
> circuit may be different here) and a normally open contact on the 1rtn
> relay.  Your PTO dash switch may have 3 wires on it, if you left in the
> 2rtn relay on an E20.  I used the 1rtn relay as a holding circuit for
> the seat switch.  Also see the General Wiring Diagram  #4).  Compare it
> to your wiring and see if you can find your problem.  Sorry my wire
> numbers are different then the original ET's, but I used the new
> standarts for diagraming.  Also check to see if the mower motor are
> turning in the right direction when you get eveything working.  Somehow
> mine was running backwards and  I had to switch the wires at the motors.
>  If I switched the wires at the PTO plug I lost the braking.  Good Luck!
>
> Ralph V
> ralphgv centurytel net
>
>
> ----- Original Message -----
> From: "Jim Coate" <jbc coate org>
> To: "Elec-Trak" <elec-trak cosmos phy tufts edu>
> Sent: Saturday, July 17, 2004 10:01 PM
> Subject: Re: (ET) wiring diag help needed...
>
>
>> That's a bummer! I've let that special smoke out of controllers before
>> and it's no fun... normally followed by several minutes of trying to
>> logic my way through what my nose has long since told me.
>>
>> I was going to ask about how you had it wired, but what you list
>> matches the schematic I have perfectly (page 5-23). The mower motors &
>> PTO should be totally separate circuit from the AllTrax so any shorts
>> or other faults would have no impact. Actually a true short on the PTO
>> should blow the fusible link and just shut everything down.
>>
>
>
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