-----Original
Message-----
From: Stephen Izett
stephen.izett@gmail.com
<flyrotary@lancaironline.net>
To: Rotary motors in aircraft
<flyrotary@lancaironline.net>
Sent: Sun, Oct 4, 2020 5:29 pm
Subject: [FlyRotary] Re: RWS EC backup crank sensor
Hi all
I’m pretty sure I programmed my EC2 for and
had the backup sensor functioning but it was years ago and
I know with my current setup the backup sensor is
disconnected.
The backup sensor in 90deg out of phase. So
looking at the front of the engine its at ~3 o’clock as
Dave says.
Note:
We had an all electronic ignition Glasair 3
IO470 go down due to a belt failure taking out the
electronic ignition CAS.
I put a stainless steel wire in the harness
of the CAS’s to protect against this single point of
failure.
Cheers
Steve Izett
>
> Dear Finn,
> Sensor at 6:00 0’clock is primary.
Sensor at 3 o’clock is backup.
> If you cannot locate appropriate
software, I can reconfigure the sensor physical locations
if necessary.
> Dave Barker
>
> Sent from my iPad
>
>>
>>
>> Thanks Bobby
>>
>> In some of the manuals I've see 90
degrees before the primary, but in the code I looked at I
think it mentioned 180 degrees.
>>
>> So, I'll have to look further. It
sure will be interesting to find out how it determines if
primary sensor has failed. Wonder what happens when
backup sensor fails and primary is OK. With no other
inputs, I don't see how it can work.
>>
>> Finn
>>
>>> Finn,
>>>
>>> Both processors see both signals
on pins 36&37. I think the second sensor must be
mounted 180 degrees opposite the main.
>>>
>>> Bobby
>>>
>>> Sent from my iPad
>>>
>>>>
>>>> Does anyone have an RWS EC
running with backup sensor?
>>>>
>>>> Yesterday I briefly looked
at the EC code (program) and it appears that
>>>> when you have a backup
sensor controller A uses main sensor and
>>>> controller B uses the backup
sensor; is that correct?
>>>>
>>>> Or is there some automatic
detection of main sensor failure that causes
>>>> a switch-over to the backup
sensor for both A and B, that I missed?
>>>>
>>>> Finn
>>>>
>>>>
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>>
>>
>>
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