Source for replacement rotary encoder?

[DaveC]

<http://i42.tinypic.com/nbt2ci.jpg>
<http://i43.tinypic.com/10rpd3d.jpg>
<http://i39.tinypic.com/28gtmvs.jpg>

How can I find a source for this component (in the US, or anywhere)? It's a
rotary encoder used as an input to a microcontroller to rotate a motor shaft
in small increments in a 10-year old German printing machine.

There are 32 detents per revolution. The unit includes a momentary pushbutton
(when you push on the shaft there is click and tactile feedback).

I presume it's a gray-code quadrature output encoder. Optical? Mechanical?
Only 5 of the pins are used. (Typically power, ground, channel 1, channel 2,
.... ?)

Source? Data sheet?

Does this look like Klockner-Moeller? Or it may be Japanese -- the LCD
display for this equipment is Hitachi.

Thanks,
Dave

 

[[email protected]]

<http://i42.tinypic.com/nbt2ci.jpg>
<http://i43.tinypic.com/10rpd3d.jpg>
<http://i39.tinypic.com/28gtmvs.jpg>

How can I find a source for this component (in the US, or anywhere)? It's a
rotary encoder used as an input to a microcontroller to rotate a motor shaft
in small increments in a 10-year old German printing machine.

There are 32 detents per revolution. The unit includes a momentary pushbutton
(when you push on the shaft there is click and tactile feedback).

We use Bourns optical encoders, like this, for "volume" knobs (double duty for
options scrolling). Grayhill also has some nice products, a little cheaper,
too.

I presume it's a gray-code quadrature output encoder. Optical? Mechanical?
Only 5 of the pins are used. (Typically power, ground, channel 1, channel 2,
... ?)

Ours just have the quadrature output. We use a I2C attached quadrature
counter for control.

Source? Data sheet?

See above, or try Digikey's online catalog as a starting place.

http://search.digikey.com/scripts/DkSearch/dksus.dll?Cat=1966131&k=optical encoder

 

[DaveC]

Yes, I can find *a* rotary encoder. I need *this* rotary encoder.

Any idea the make & model of this one? Is EBE the manufacturer?

Thanks,
Dave

 

[Rich.]

It's made by EBE a German company. You might have to try and contact them
through email for the exact replacement part.
http://ebe-gmbh.de/cont/de/ebe/pro/itro/CESI.html

Here's the Google translation of the webpage.
http://translate.google.com/transla...de/cont/de/ebe/pro/itro/CESI.html&sl=de&tl=en

 

[[email protected]]

Yes, I can find *a* rotary encoder. I need *this* rotary encoder.

Any idea the make & model of this one? Is EBE the manufacturer?

Yes, EBE is the manufacturer, the address is 70771
Leinfelden-Echterdingen Stetten (this is near Stuttgart, the number
being the postal code of Leinfelden-Echterdingen). Their website is
<http://www.ebe-gmbh.de/> and you may try to contact them at
[email protected], with the obvious replacement.

Martin.

PS: Number of newsgroups cut down to three.

 

[[email protected]]

Yes, I can find *a* rotary encoder. I need *this* rotary encoder.
Why?

Any idea the make & model of this one? Is EBE the manufacturer?

 

[James Sweet]

Why?

Probably trying to use it in an existing design. Parts like this seem to
vary pretty widely on mechanical layout.

 

[DaveC]

Why?

Probably trying to use it in an existing design. Parts like this seem to
vary pretty widely on mechanical layout.

Yes. Because of existing electrical interface & mechanical mounting. Could
re-engineer, but easiest / quickest is to replace with identical unit.

Dave

 

[[email protected]]

Yes. Because of existing electrical interface & mechanical mounting. Could
re-engineer, but easiest / quickest is to replace with identical unit.

The electrical interfaces, at least of the models I've used, are identical.
Mounting varies somewhat across models, but it's close enough that a one-off
should be possible.

 

[DaveC]

The electrical interfaces, at least of the models I've used, are identical.

Mounting varies somewhat across models, but it's close enough that a one-off
should be possible.

Well since you're offering ;-)

The translated product page is here:

<http://babelfish.yahoo.com/translate_url?doit=done&tt=url&intl=1&fr=bf-
home&trurl=http%3A%2F%2Fwww.ebe-
gmbh.de%2Fcont%2Fde%2Febe%2Fpro%2Fitro%2FCESI.html&lp=de_en&btnTrUrl=Translate
or use this compacted URL:

<http://tinyurl.com/324gzw5>

The original page is only in German, as is the data sheet.

A translation of the 10-pin header is:

1 VCC

2 GND

3 If rotating right: low-pulse, lagging after pin 6
If rotating left: low-pulse, preceding pin 6

4 If rotating right: static low
If rotating left: static high

5 change of state at each detent

6 If rotating right: low-pulse, preceding pin 3
If rotating left: low-pulse, lagging after pin 3

7/8 pushbutton (no galvanic connection to other pins)

10 Low pulse at each detent (not connected for type V)

Phase difference between pin 3 and 6 250us independent of rotation speed.

The encoder interface in this machine uses only pins 1, 2, 3, 6 (plus the
pushbutton).

Does this product share specs with others you're familiar with? If so, can
you point to a few I might use as replacement?

Thanks,
Dave

 

[DaveC]

The original p/n is CESI-32/VS, 32 detents per revolution.

Dave

 

[[email protected]]

Well since you're offering ;-)

The translated product page is here:

<http://babelfish.yahoo.com/translate_url?doit=done&tt=url&intl=1&fr=bf-
home&trurl=http%3A%2F%2Fwww.ebe-
gmbh.de%2Fcont%2Fde%2Febe%2Fpro%2Fitro%2FCESI.html&lp=de_en&btnTrUrl=Translate

or use this compacted URL:

<http://tinyurl.com/324gzw5>

The original page is only in German, as is the data sheet.

A translation of the 10-pin header is:

1 VCC

2 GND

3 If rotating right: low-pulse, lagging after pin 6
If rotating left: low-pulse, preceding pin 6

4 If rotating right: static low
If rotating left: static high

5 change of state at each detent

6 If rotating right: low-pulse, preceding pin 3
If rotating left: low-pulse, lagging after pin 3

7/8 pushbutton (no galvanic connection to other pins)

10 Low pulse at each detent (not connected for type V)

Phase difference between pin 3 and 6 250us independent of rotation speed.

The encoder interface in this machine uses only pins 1, 2, 3, 6 (plus the
pushbutton).

Does this product share specs with others you're familiar with? If so, can
you point to a few I might use as replacement?

I'm certainly not volunteering to do your work for you, just pointing out that
there is more than one source for these things.