Seagate Stepper
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Posts: 46,084
I pulled a Stepper motor from an old 5 1/4" floppy. The only
markings on it are Seagate P/N 72041-240. There are four wires on a
5 pin header. They are Red, (blank), blue, white, yellow.
A web search only found one reference to a Seagate stepper. It
indicated that the the unit was a bipolor stepper with red being
common and the metal case being ground. The stator is said to have 6
poles.
Does anyone know anything else about this motor? If the web info is
true, then there are three control wires, but I have no clue what the
stepping sequence would be.
TIA,
Rob
markings on it are Seagate P/N 72041-240. There are four wires on a
5 pin header. They are Red, (blank), blue, white, yellow.
A web search only found one reference to a Seagate stepper. It
indicated that the the unit was a bipolor stepper with red being
common and the metal case being ground. The stator is said to have 6
poles.
Does anyone know anything else about this motor? If the web info is
true, then there are three control wires, but I have no clue what the
stepping sequence would be.
TIA,
Rob
Comments
bipolar stepper controller until the motor steps correctly.
Dennis
Original Message
From: rrothe64 [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=TpDpiOSQRTvduEOpIOVdpE6jXMXGlo3hRRjX2QZTiQ8xzMmDzDMs5uM44MFKK5UFw94UJdIcuqZxU1wboUo]rrothe@m...[/url
Sent: Sunday, August 03, 2003 5:30 PM
To: basicstamps@yahoogroups.com
Subject: [noparse][[/noparse]basicstamps] Seagate Stepper
I pulled a Stepper motor from an old 5 1/4" floppy. The only
markings on it are Seagate P/N 72041-240. There are four wires on a
5 pin header. They are Red, (blank), blue, white, yellow.
A web search only found one reference to a Seagate stepper. It
indicated that the the unit was a bipolor stepper with red being
common and the metal case being ground. The stator is said to have 6
poles.
Does anyone know anything else about this motor? If the web info is
true, then there are three control wires, but I have no clue what the
stepping sequence would be.
TIA,
Rob
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Steppers are simple.
There are 2 coils on a 4 wire motor (bi-polar) check with an ohm
meter to verify which are which.
if the motor has any data, volts or amps you are in luck. with an
ohms reading and volts or amps you can figure the watts of the unit.
if it is six wire, then you can find the 4 coils and the center tap
in the pairs of coils. more ohms readings.
http://www.hut.fi/Misc/Electronics/circuits/diskstepper.html
seems to have a lot of data about floppy steppers.
google floppy stepper and not the brand or specifc model.
Dave
--- In basicstamps@yahoogroups.com, "rrothe64" <rrothe@m...> wrote:
> I pulled a Stepper motor from an old 5 1/4" floppy. The only
> markings on it are Seagate P/N 72041-240. There are four wires on
a
> 5 pin header. They are Red, (blank), blue, white, yellow.
>
> A web search only found one reference to a Seagate stepper. It
> indicated that the the unit was a bipolor stepper with red being
> common and the metal case being ground. The stator is said to have
6
> poles.
>
> Does anyone know anything else about this motor? If the web info
is
> true, then there are three control wires, but I have no clue what
the
> stepping sequence would be.
>
> TIA,
>
> Rob