[GreenKeys] Woot! M15 has arrived - and I am already STUCK!

[drlegendre .]

Found the keyboard terminals are #32 and #34 - or at least I can get a
working KB from those terminals. However, a couple of questions have popped
up (imagine that..)

First off, the wiring diagram I'm using shows a jumper between #32 and #42.
Now there was a jumper on the block, but it wasn't in these locations - it
was connecting #34 and #45. Anyone know what this jumper is about? It's
exactly the right length for the #32-34 connection.

Also - since the selector magnet switch was originally in the Series
position, and I've shifted it to Parallel - this means we went from 20mA to
60mA loop. It also seems that the KB can be selected for 20mA or 60mA. In
my present setup (running the level converter) this isn't any real issue,
it seems, as the converter box puts out very little current on the keyboard
terminals.

But if I want to connect the keyboard and printer in 'local loop', won't I
need to also set the keyboard for 60mA, lest I damage something? (I'm
assuming here that if the selector magnets were set for 20mA, the keyboard
will be set the same.. this may be unfounded, but I need to know..)

How is that change made - I don't see a toggle switch?

On Sun, Sep 6, 2015 at 7:22 PM, Ralph Mowery <rmowery28146 at earthlink.net>
wrote:

> Good for you.
>
> I think you know what I ment about the coils.  The machine will have two
> coils next to each other.  They may or may not have the switch to put them
> in parallel or series.   Without the switch  you have to do the changing by
> moving the wires.  Also they have to be 'phased' right so the magnetic
> fields help each other instead of trying to cancel each other out.
>
>
> Depending on the machine the coils will be either the pulling type or the
> holding type.  The holding type are more desirable as they have less
> inductance and work slightly faster. They are sort of brown and squared off
> on the ends where the pulling coils are more round and larger.
>
> Without any power on the coils the machine does what i s called running
> open.  Lots of mechanical things going on.  Probably does not hirt anything
> more than when it is printing.  When  power is applied to the loop the
> magnets take hold and the machine quients down and about all that is moving
> is the shaft.
>
>
>
> ----- Original Message -----
> *From:* drlegendre . <drlegendre at gmail.com>
> *To:* Ralph Mowery <rmowery28146 at earthlink.net> ; Green Keys
> <GreenKeys at mailman.qth.net>
> *Sent:* Sunday, September 06, 2015 3:41 PM
> *Subject:* Re: [GreenKeys] Woot! M15 has arrived - and I am already STUCK!
>
> Nope, didn't know that there were two sets of coils - or that I needed to
> have the motor running to actually get the thing to pull in @ 60mA.
>
> So I turned on the motor and now the damn thing just seems to work!
> Awesome..
>
> The converter box seems perfectly fine as well, and the software only
> needed a couple of tweaks. I wasn't sending LF after CR, so added that. It
> also seems that there might be a minor timing bug. Should also look at
> adding all the features mentioned, such as multiple CRs, lead-in with LTRS
> etc.
>
> But for now, I've got a printer. Haven't tried the KB yet..
>
> On Sun, Sep 6, 2015 at 1:45 PM, Ralph Mowery <rmowery28146 at earthlink.net>
> wrote:
>
>>
>>
>
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