Re: [CAD_CAM_EDM_DRO] Re: gecko's and voltage - Gecko Warrantee

cnchomeman wrote:

>Well I must say I am amazed at all the replies to my seemingly simple
>question. Some replies even answered the question! I must also say
>I asked Mariss this question offline as well and I recieved a very
>quick response. Goes to show that Gecko Drive is a top notch
>retailer/manufacturer, and is genuinely concerned about the customer.
>
>I will continue to run the drives at 65 volts. I would hate to break
>these perfectly good drives.
>
>Thanks for everyones help.
>
>I have one more question then. If I can obtain a 80 volt REGULATED
>powersupply, it will be perfectly safe to run the drive at the RATED
>voltage correct?
>
>

Not necessarily. Most regulated supplies will not accept current back
from the load. Some have overvoltage crowbars that will short the
output when you eceed some setpoint above the nominal setting.
Shorting the output while the motor is in motion would cause a large
current and could damage the motor or the drive. But, other than the
crowbar, if current came back from the motor to the drive, the power
supply would not have a facility to dissipate that energy, and the
voltage at the drive would rise. Mariss has a drawing somewhere
on a circuit to dissipate overvoltages safely.

Jon