Re: [CAD_CAM_EDM_DRO] Servo Motor Identification

Brian,
I also have a couple of the NMI servos and have tried e-mailing those
folks last weekend for the same information!

To date, they have not responded, but IF/WHEN they do, will post the
results to you. I believe they are 24 V as the other servos in my
blown up Calcomp 4034 are also 24V I beleive the cable out of the end
is for an encoder, but so far don't have a clue as to type or wiring.
Pulled the cover and visually examined and it doesn't seem to be the
hoped for optical units like the HEDs units. Hope to have some
information this week:-})

--
Bubba

OLDER THAN DIRT
Country Bubba
(Actually the inventor of Country and Bubba)

axtein@...
LaGrange, GA

http://members.dicomm.net/~axtein

On Fri, 22 Feb 2002 13:21:25 -0000, Dr Brian H Le Page wrote:
>I have just gone from having no servo motors to having 8! My
>problem is
>that I cannot find out the electrical characteristics of any of
them.
>
>The first two came from a Calcomp plotter, the type with a 3 foot or
>so pen
>movement, possibly a 4XXX. The motors are labelled:
>
>Universal Magnetics Corp.
>Subsidiary of IMC Magnetics corp.
>10211-301-001
>ME21026017
>8709
>Cerritos. CA 90701.
>There is no reference to voltage or current, apart from a plus sign
>next to
>one of the brushes. There is an encoder on the end. I do not have
>the
>controller. They are about 2 inches in diameter and about 4 inches
>long,
>excluding the encoder.
>
>
>
>The next 6 are from a Unimate Puma 500 series robot. There are two
>different sizes, NEMA 23 and 34.
>
>The base motors, NEMA 34, are about 4 and 3/8 long excluding the
>encoder and
>potentiometer. They also contain a brake. Total length is 6.5
>inches.
>
>There are no labels on the motors. Hand written on the flange
>mounting
>plate is:
>
>ST = 14.0 (possibly lb ins)
>SC = 7.1 AMP
>BT = 1.8
>
>No mention of voltage.
>
>The wrist motors, NEMA 23, are about 1.75 inches long, excluding the
>encoder
>and potentiometer. There is a label saying Unimation (Europe) Ltd,
>dated
>March 1983. There re no other markings.
>
>>From the little I have been able to find on the PUMA motors I
>>believe the
>NEMA 34 motors are rated at 8 amps and the NEMA 23 motors at 4 amps.
>
>If the SC = 7.1 Amps written on the NEMA 34 motors means stall
>current,
>could I lock the armature and measure the voltage to get to 7.1
>Amps, or
>would this destroy the motor?
>
>
>Can anyone help me with any information on these motors? I do not
>want to
>destroy them!
>
>Thanks
>
>B
>
>Brian H Le Page