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Tachometer input voltages (Read 351 times)
May 31st, 2017 at 5:03pm

Jay S   Offline
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I am installing an electronic ignition module from Rotec. I have not been able to get a response from them to my quesitons. The ICU that they use appears to be similar to a BOSCH unit with a hall sensor trigger. It has a tach output, but no indication if this is sending the hall triggering voltage as a pulse or something higher.  If you have dealt with this type of ICU tacho output in the past can you tell me if it connects to the high voltage or low voltage EMS input. Right now, I have it connected to the high voltage input. Thanks for any help you can render.

Jay
 
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Reply #1 - Jun 5th, 2017 at 4:33pm

Jay S   Offline
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Can someone please help me with this question? I am at a loss and need to hook this up.  Don't want to get it wrong and burn out my EMS or not register any RPM. Thanks.
 
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Reply #2 - Jun 8th, 2017 at 7:27am

Robski   Offline
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This is a forum for Dynon Engine Monitoring Systems.
Nothing to do with Rotec Electronic Ignition.

Maybe here?
https://forum.rotecaerosport.com/forum/main-forum/r3600/57-electronic-ignition
 

Rob Swain
Software Developer (Retired)
Shropshire, UK
Van's RV-6

If the good Lord had intended man to fly He would have given him more money.
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Reply #3 - Jun 20th, 2017 at 11:19am

Jay S   Offline
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I know this is a Dynon forum. I am installing a Dynon EMS and Skyview system. The EMS has tachometer inputs for either high or low voltage. I am asking here to see of others have connected a similar electronic ignitiion with tach output to a Dynon system. I am hoping that there is some shared experience. Have you installed an electronic ignition with a tach output to your dynon system? If so, any help would be appreciated.

Jay
 
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Reply #4 - Jun 20th, 2017 at 12:22pm

RayInGA   Offline
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Richmond Hill, GA

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I haven't dealt with a hall type sensor but I have a P-Mag (electronic ignition) that sends voltage directly to the Dynon EMS. The P-Mag documentation provides the output information necessary to determine the correct input to the Dynon EMS.

You will likely need to contact the MFG of the sensor to know which input to use since no one else here seems to have used the same setup.
 

Ray Eaker
RV-7A flying since 27 Jan 2017
Dual Skyview 1000T with all the standard Dynon VFR goodies and ADS-B out.
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Reply #5 - Jun 20th, 2017 at 4:48pm

Jay S   Offline
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Thanks Ray. I actually came here second after not getting any response from the Rotec forum. I keep trying there but crickets. I guess I will have to spend the dime to call Australia, but I was trying to avoid that.

Jay
 
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Reply #6 - Jun 22nd, 2017 at 7:31am

Robski   Offline
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As has been observed already, sounds like you need to contact Rotec themselves.
Surely they have an email address for tech support?

What is their normal 'recommendation' for a tacho?
Something like a Westach, maybe (with or without the half speed / wasted spark wire cut)?
Can you get the technical specs for that and then reverse-engineer / imply from that?

Where are you? Putting a location in your profile may get people closer to you to offer some assistance.
« Last Edit: Jun 22nd, 2017 at 7:34am by Robski »  

Rob Swain
Software Developer (Retired)
Shropshire, UK
Van's RV-6

If the good Lord had intended man to fly He would have given him more money.
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Reply #7 - Jun 22nd, 2017 at 2:52pm

Jay S   Offline
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Posted repeatedly on Rotec's forums, but no response, so I came here afterward. After reading the Dynon EMS docs, it was clear there is a high and low voltage input with selectable pulse rate, so I thought that maybe someone had been through the same exercise here. I am in western Colorado in USA.  I will keep trying Rotec. Thanks for the reply

Jay
 
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Reply #8 - Jun 22nd, 2017 at 4:17pm

jakej   Offline
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Jay, I'll try & contact them for you  Wink
 
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Reply #9 - Jun 23rd, 2017 at 9:33am

Jay S   Offline
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Thank you, Jake. Much appreciated...

Jay
 
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Reply #10 - Jun 23rd, 2017 at 4:33pm

jakej   Offline
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Australia

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It's the weekend here at the moment, will contact them  Monday morning  Smiley
 
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Reply #11 - Jun 25th, 2017 at 5:34pm

jakej   Offline
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Australia

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Jay, good news - I've sent you a pm.
 
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