Re: Multi unit controls
David Johnson (trainman@ozemail.com.au)
Mon, 14 Jul 1997 14:34:37 -0700
Locos use four wires to determine the eight notches.  One wire is the 
enable wire.  The other three select which solenoids are turned on a 
small triangular plate on the governer.  Different combinations of the 
three corners allow 8 different combinations.
For example: (these are not actual settings)
Notch 1
  o
 o o
Notch 2
  .
 o o
Notch 3
  o
 . o
Notch 4
  o
 o .
Notch 5
  .
 . o
Notch 6
  .
 o .
Notch 7
  o
 . .
Notch 8
  .
 . .
-- 
David Johnson - Rail Services Authority
trainman@ozemail.com.au
trainman@railpage.org.au
http://www.ozemail.com.au/~trainman