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

drlegendre . drlegendre at gmail.com
Sun Sep 6 14:26:58 EDT 2015


Based on the measurements, they're about 90R each -  so about 180R series /
45R parallel. This is also the figure (90R) quoted in the wiring diagram
that I'm working from.

On Sun, Sep 6, 2015 at 1:21 PM, <COURYHOUSE at aol.com> wrote:

> what are the ohms  of the  coils!?!?
>
>
> In a message dated 9/6/2015 11:05:32 A.M. US Mountain Standard Time,
> drlegendre at gmail.com writes:
>
> I've done some more digging around, and came up with something I can't
> make sense of.
>
> There's a toggle switch on the typing unit, with a screw-down locking tab
> to prevent accidental movement. This seems to be the DPDT switch which
> configures the solenoid coils in the holding magnet as either series or
> parallel connection. The switch was set to 'series' and I measured ~190R at
> terminals #45 & #46 which I believe are correct for the selector.
>
> I was expecting a 55R winding.. but got 190R. Flipping the switch dropped
> the reading to about 50R, which is close to what I had initially expected -
> so OK.
>
> Trouble is, it takes way more than 60mA to pull in that magnet. When I
> connect the 120V / 60mA supply, it just maxes out the current and sits
> there. Using a bench power supply, I found that it requires more like 265mA
> to pull in the magnet.
>
> What's going on here?
>
> On Sun, Sep 6, 2015 at 11:51 AM, drlegendre . <drlegendre at gmail.com>
> wrote:
>
>> Thank you, Jim! Just digging into it now..
>>
>> On Sat, Sep 5, 2015 at 10:22 PM, Jim Haynes <jhhaynes at earthlink.net>
>> wrote:
>>
>>>
>>
>
>
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