Today's Message Index:
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1. 07:22 AM - Tachometer (BobbyPaulk@comcast.net)
2. 08:35 AM - Re: Fw: RV10-List: Odyssey optimal charge voltage (Robert L. Nuckolls, III)
3. 09:54 AM - Re: Tachometer (user9253)
4. 11:50 AM - Tachometer (BobbyPaulk@comcast.net)
5. 12:55 PM - Re: Tachometer (user9253)
Message 1
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List
Does anyone know of of a situation where the Tachometer output of the Rotec E-Mag
( Square wave ) is hooked to a Dynon EMS?
I can not get the amplitude of the signal from Rotec and Dynon says it must be
12 v and not more than 50.
Bobby
Zodiac 601 XL "B"
Jabiru 3300 S/N 1141
Status - Flying 236 hrs.
Do Not Archive
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| Subject: | Re: Fwd: RV10-List: Odyssey optimal charge voltage |
At 04:23 PM 5/14/2015, you wrote:
>Forwarded from the RV10 list
>
>
>Begin forwarded message:
>
>>From: Kelly McMullen <<mailto:apilot2@gmail.com>apilot2@gmail.com>
>>Date: May 14, 2015 at 12:41:31 AKDT
>>To: <mailto:rv10-list@matronics.com>rv10-list@matronics.com
>>Subject: RV10-List: Odyssey optimal charge voltage
>>
>>Just wondering if anyone has researched what optimal alternator
>>setting should be using the Odyssey 925L battery? Whether it should
>>be different than the old wet cell set point between 13.8 and 14.2.
>>
>>
No.
Bob . . .
Message 3
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What model Dynon EMS are you using? The SkyView EMS has both a high voltage and
a low voltage tach input. The high voltage input can come from a "P" lead with
a 30K resistor. The low voltage input can be less than 12 volts.
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Joe Gores
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=442136#442136
Message 4
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Joe,
I am trying to tie my Dynon DEK - 180 ( 2007 vintage) Pin #32 Green / White RPM
Left into the Tachometer output ( Pin 7 Square Wave ) of the Rotec E-Mag.
I can not get a go or no go from either Dynon or Rotec.
Any help would be appreciated.
bobby
Message 5
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Bobby,
The safe way to hook it up, so as to not risk damaging anything, is to use a 30K
resistor in series between the ignition pin 7 and the EMS pin 32. If the D-180
does not display an RPM, then look at the signal with an oscilloscope or digital
meter that reads peak voltage.
Or you could use the trial and error method. If the tachometer does not work
with a 30K resistor, then remove it and connect ignition pin 7 directly to EMS
pim 32. Looking at Rotec's documentation, my guess is that the tach signal is
not high voltage.
http://www.rotecaerosport.com/faqs/ign-plug/
--------
Joe Gores
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=442145#442145
Attachments:
http://forums.matronics.com//files/rotec_tach_134.jpg
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