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

[drlegendre .]

Correction Correction..

When I said "It's exactly the right length for the #32-34 connection.", I
meant to say "... for the #32 - #42 connection (as shown on the diagram)".
Sorry about that.

On Sun, Sep 6, 2015 at 8:14 PM, drlegendre . <drlegendre at gmail.com> wrote:

> 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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>
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