|
OK before I start this, I need to know if I'm
reading the schematic right. 1st I'm building a E20 puller, an I am stripping
the control circuit down to the bear bones, no PTO, no RTNs, no CC, etc... I'm
looking at a schematic for an E20 DA when I hit the foot feed the start swt
brings in 1F an 2F, I now have power to the motor a A1 an S2 thru R1, R2, R3,
wire #8(or #24) feeds a diode to wire #62 to Field F1..F2 draws from R4,
wire #37, FW2, wire #22 a complete circuit ( so far so good?)...so I want the
field strong? with only one resistor in the line and as I go up in speed ( 1A,
then 2A, then 3A, I still only have R4 in line if I go on up in speed I add R 5,
R 6, R 7 for a weak field?
All safeties will be in the line ...ie key swt,
seat swt, brake swt, CB 3 will be replaced by a deadman swt ( which will also be
in wire #15) ..diodes will be added for feedback control..
So am I way out in left field...it looks ok on
paper...an it looks to work with the testing I've done on a mockup
board..
I'm open to all input you got..thanks in
advance
it will only be running hard for about 90
sec
Jerry NW Ohio
|