Re: [CAD_CAM_EDM_DRO] Gettys servo control

Sounds like Gettys dc servos with tacho feedback to the Gettys controller
with a motor mounted (possibly geared) resolver whose signal was fed to the
NC or CNC. This was a fairly standard setup and the Gettys controller
required between 5v and 10v (plus or minus with respect to ground) to give
motor top speed in either direction.


Regards Peter

----- Original Message -----
From: <juha.keisala@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Thursday, January 16, 2003 11:08 AM
Subject: [CAD_CAM_EDM_DRO] Gettys servo control


> I found a junked Cincinnati Milacron and I got grazy idea if I could
> rebuild it.
>
> There are the servo motors and controllers still in the machine. My
> idea is to control the servos by the computer.
> But, I have some major difficulties, since I am not a servo expert in
> any way, so I do not have a faint idea what kind of
> controlling input is required for servo cotrollers or can I say
> amplifiers. Neither I know is there a feedback from the servo
> (resolver) straight to controller or does the feedback go somehow
> through the computer of the machine. If I could know what kind of
> input is required into servos, I could try to change, e.g. pulse &
> direction control from the PC to the signal required, assumed the
> feedback goes straight to the controller.
>
> Servos are made by Gettys, they are most probably DC motors.
> The type of the controller is 11-1010-97.
>
> Tell me if I am totally on a wrong track.
>
> Terveisin,
> Juha
>
>
>
>
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