M-7 involved in accident tonight...

[N340SG]

Phil,

In this application, the Thyristor seems to be used only as a protective device. See the explanation "right out of the book":

http://members.aol.com/N340SG/thyris.jpg

I am hearing that the code for this has been occurring.
If it happens 3 times in any 1 minute span, the system locks out.

[N340SG]

To anyone interested:

Here are some of the general specs for the LIRR M-7s, "right out of the book."



If image fails to load:
http://members.aol.com/N340SG/m7specs.jpg

I trust they are correct. They have been doing a pretty good job thus far of keeping the documentation caught up with any known changes. My book is allegedly current as of 2/27/04.

[Nasadowsk]

Interesting. I'm guessing that's to kick things out if the brake chopper fails. I wonder what would cause that under motoring, though?