FW: (ET) Alltrax DCX300 ET in E20

["Raymon Ellis" <raymonellis adelphia net>]

I have mo ides what you are talking about. Please explain if you will. My
E20 DA tractor came with a thin metal shunt across which the power meter 
was
connected to display current drawn by the motor! The big shunts up front
which control field weakening have all been removed for the AllTrax. 
Thanks,
Raymon

-----Original Message-----
From: Christopher Zach [mailto:czach computer org] 
Sent: Friday, June 10, 2005 11:18 PM
To: Raymon Ellis
Cc: elec-trak cosmos phy tufts edu
Subject: Re: (ET) Alltrax DCX300 ET in E20

> WOW is right! Neil the shunt in my tractor is a copper strip which is 
> mounted up on two insulated posts. I prepared a length of #6 copper wire 
> to the specified length with lugs on each end but used instead the 
> original copper shunt. When I install the new DCX300 ET I will use the 
> fuse that Steve Richardson says he is sending with the unit. Thanks for 
> the comment. Raymon

Note: That is the wrong shunt. That shunt is used for the transistor 
turn off for the field weakening and is in series with the motor 
armature. Do not measure across that; it's drop is in volts.

My guess is this is what happened. The meter shunt voltage drop is in 
millivolts.

Chris