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[DPRG] Copal / Hitachi Rotary Encoder

Subject: [DPRG] Copal / Hitachi Rotary Encoder
From: Kipton Moravec kip at kdream.com
Date: Sun Nov 10 07:21:01 CST 2002

On a lot of encoders Z is a zero.  It pulses once per revolution so you can
know if you missed a pulse, or reset to a known position at power-up.

Kip

----- Original Message -----
>From: "Earl Bollinger" <earlwbollinger at attbi.com>
To: "DPRG" <dprglist at dprg.org>
Sent: Saturday, November 09, 2002 11:04 PM
Subject: RE: [DPRG] Copal / Hitachi Rotary Encoder


> Thanks that help, the ones I am looking at seem to be a older version.
> But that does reasonably solve the voltage question.
> Thus it looks like
>      Vcc is input voltage 5 to 12v (5v to be safe of course)
>      O' is the ground common pin
>      A and B are the quadrature output pulses
>      Z is the single pulse output (sort of a A&B) if it is made available
>    The part number implies they may be a 100 pulses per revolution model,
> which would be nice for me (easy math).
>
> Now to figure out what the HP QEDS-7099's are. They just couldn't be nice
> and mark them like the
> Copal ones.
> Thanks,
> Earl
>
> -----Original Message-----
> From: dprglist-admin at dprg.org [mailto:dprglist-admin at dprg.org]On Behalf
> Of Rodent
> Sent: Saturday, November 09, 2002 10:13 PM
> To: DPRG
> Subject: Re: [DPRG] Copal / Hitachi Rotary Encoder
>
>
> http://info.tactnet.co.jp/copal/e/product/pdf/rotary_encoders/re30e_en.pdf
>
>
>
> > COPAL, RE30-100-200-B. It's a really fancy machined aluminum cylinder
like
> > shape or style.
> > On the connector end there are 5 pins marked A, Z, VCC, O', B ; arranged
> in
> > a circle, and the number 828DA
> > Google (and Alta-Vista) search comes up empty.
> > It looks like its another quadrature encoder of some type.
> > The pinouts (what do they do or used for) would be immensely welcome.
> (Open
> > collector?).
>
>
>
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