Re: [CAD_CAM_EDM_DRO] Please help Permanent Magnet Field Servo Motor???????????

There are 2 big wires that are for the armature and 2 for the thermal
overload the ends of the getty's motors have a 7 or 9 volt dc tachometer
also. Should be no problem to use servo dynamic drives but you should put
line reactors between the drives and the motors.


Harko

On 3/13/06, Jon Elson <elson@...> wrote:
>
> Babar wrote:
>
> >Hi All,
> >
> >Can anyone give me some info about "Permanent Magnet
> >Field Servo Motor" Is this a AC servo or DC sevo?
> >
> >I have these motors (from Gettys) in a milling , I
> >want to change the SCR drives with Servo dynamics DC
> >drives, can I do this?
> >
> >There are 4 wires going to the motor from Drive.
> >
> >
> Hmm, odd. What are the 4 wires? The label seems to indicate
> it would be a brush servo motor, and only need 2 wires.
> One more might be a safety ground. It is also common
> to have a temperature sensor in the motor to put the drive on
> reduced current if the motor gets hot.
>
> Can you check if these wires are connected together at the drive
> end? Sometimes they run 2 pairs of 2 wires in parallel, because
> the cable can bend more easily. In this case, a 4 brush motor
> may have each brush connected to one wire. Opposite brushes
> on the motor are connected together at the drive end.
>
> Jon
>
>
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