Re: (ET) I was woundering.

["Steve Bell" <sebpv stelle net>]

Hi Joe,

 The 4QD controllers do four quadrant regen braking. I used a 300-amp /36
volt 4QD on my rebuilt E20. For field weakening you can  leave the FW
circuit just as it. I choose to take the FW circuit out the
microswitch -controlled speed controller and use a separate manually
operated rotary switch for FW; that way I get 8 speeds (in any chosen speed
range) and I use the rotary switch to select my speed range (level of FW).
This gives me very fine speed control with a total of 32 speeds in either
range of the transaxle.

The 4QD has adjustable acceleration / deceleration ramps and is fully
protected from being damage by full forward to reverse shifting without 
full
stopping between directions.

Sincerely,
Steve Bell

First time posting on ET.



----- Original Message -----
From: "Solid Technologies" <solidtech qwest net>
To: "'elec-trak'" <elec-trak cosmos phy tufts edu>
Sent: Wednesday, April 23, 2003 8:28 AM
Subject: RE: (ET) I was woundering.


> I thought the currently available controllers did not support the field
> weakening and regen braking the current ET circuit does...  Or is there
one
> that does?
>
> --joe
> E-15 in Colorado
>