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Older QSI E-7 decoder question?

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  • Member since
    June 2006
  • From: Maryville IL
  • 9,577 posts
Older QSI E-7 decoder question?
Posted by cudaken on Sunday, August 9, 2009 8:59 PM

 The engine is a Proto 2000 E-7 with sound and Walther's owned Proto when it was made. Does it lower CV's control the same engine controls say as a Digitrax and if so is it in the same range?

 Case in point, the E-7 has all wise been a slow engine. Tonight I checked CV 5, it's CV is at 1. Does the QSI use the same range of a Digitrax? If so, no wonder it is slow! It manual cover higher CV's for sound but unless I have missed them no CV's for motor control.

 Thanks for the coming answers.

                                        Cuda Ken

I hate Rust

  • Member since
    February 2002
  • From: Reading, PA
  • 30,002 posts
Posted by rrinker on Monday, August 10, 2009 6:28 AM

 CV's for address, start, mid, stop, and some other things are part of the NMRA standard, so they do control the same things on QSI as they do a Digitrax or TCS decoder. The exact range of values is not always the same, but CV5 is VMax. Typically, if Vmax < Vmin, Vmax is ignored - since who would want a loco to go fast at speed step 1 and slower as you advanced the throttle? What value indicates "don't use Vmax" can also vary - sometimes it's 0, sometimes 255. Without looking in the QSI manual, 1 is also probably "don't use" - if the Vmax really was 1, even wide open your loco would be going so slow you could count the ties 1 by 1 as it passed. You need to go to the QSI web site and get the full decoder manual for full details. It's over 130 pages.

                         --Randy

 


Modeling the Reading Railroad in the 1950's

 

Visit my web site at www.readingeastpenn.com for construction updates, DCC Info, and more.

  • Member since
    June 2006
  • From: Maryville IL
  • 9,577 posts
Posted by cudaken on Monday, August 10, 2009 9:48 AM

 Thanks Randy, more than likely 1 is default. Engine is slow but not that slow. I looked at the on line manual and when I saw it was 160 pages I said forget it for now.

                  Ken

I hate Rust

  • Member since
    December 2001
  • From: Trois-Rivieres Quebec Canada
  • 1,063 posts
Posted by jalajoie on Monday, August 10, 2009 10:01 AM

I just checked with Decoder Pro and the default value for CV2=32, CV5=1 and CV6 is not used.

Randy is wright as usual.

Jack W.

  • Member since
    November 2002
  • From: Thornton, CO
  • 763 posts
Posted by jwils1 on Monday, August 10, 2009 11:37 AM

If CV5 is set a 1, 0 or 255 then max. motor voltage would be applied at maximum throttle.

Jerry

Rio Grande vs. Santa Fe.....the battle is over but the glory remains!

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