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Re: (ET) E15 Alltrax died



            Being a series motor, it should produce a dandy spike. :(  It wouldn't last long , but since semiconductors are the world's fastest fuses, it probably has a long enough duration to turn expensive parts back into sand. 
           GE didn't use the braking part of the contactor since there is no continuously present field such as a permanent magnet motor possesses.
            A query to AllTrax certainly seems to be in order.
 
RJ
 
----- Original Message -----
From: John Jeno
Sent: Monday, December 03, 2007 1:08 PM
Subject: (ET) E15 Alltrax died

To all you guys running with the Alltrax controller.  The first time I went to blow snow with my new (to me) rebuilt snow thrower my Alltrax died.  After two years of mowing an acre a week it seems odd that it happens the first time I ran the blower.  Everything still functions on the tractor but there is no life on the Alltrax LED and no signal to close the main contactor.  I swapped the Alltrax and everything is wonderful, but I do not want to smoke another. 

 

Question is, does the snow thrower generate a voltage spike when shutdown?

The power cord only has 2 wires hooked up to the drive, should the third be used ala the mower drive?

Should there be a clamping diode in use?

 

Thanks to whoever knows.

 

John Jeno
E-15 (2)

E-scrap (3)

 

 

 

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