On Tue, 2011-09-20 at 19:38 +0300, Andrew wrote:
... snip
> It just stops and shows something like "Overvoltage" when connected to PC.
... snip

I've seen this message from my VFD's while setting up dynamic braking
where the motor back EMF from motor deceleration (motor becomes more
like a generator) back drives the VFD's DC bus beyond the bus maximum
voltage. Fitting an appropriate braking resistor or limiting the motor's
deceleration usually fixes this.



-- 
Kirk Wallace
http://www.wallacecompany.com/machine_shop/
http://www.wallacecompany.com/E45/index.html
California, USA


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