Re: (ET) E15 alltrax death

["David Roden" <etpost drmm net>]

On 4 Dec 2007 at 7:42, Konstanty, Walter (GE Indust, ConsInd) wrote:

> The motor can't generate a spike as
> it's a resistive element.  

What kind of motor is pure resistance?  All the motors with which I'm 
acquainted, being electromagnetic devices, have some amount of inductance. 
 
Some types have more than others, of course.

That said, my gut reaction is that the PTO contactor is the likely 
culprit, 
mainly because I've seen HUGE spikes from contactors without suppression 
diodes.

> if the voltage drops low enough it might "shut off" the Alltrax SCR's.

I'm pretty sure the Alltrax is a MOSFET design.


David Roden - Akron, Ohio, USA

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