Mauledriver(at)nc.rr.com
Guest
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 Posted: Tue Jul 01, 2014 10:20 am Post subject: Brownout battery charging? |
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On 7/1/2014 8:46 AM, Bill Watson wrote:
| Quote: | I was away from my system for a few days. Let me know if still
interested and I'll share my diagrams. You'll also need TCW's
installation instructions which can be found here
http://www.tcwtech.com/IPS-12v.htm. I used the 8amp model to provide
backup power to (3) GRTs HXs and (1) G430.
On 6/27/2014 12:22 PM, Justin Jones wrote:
>
> <jmjones2000(at)mindspring.com>
>
> Bill,
>
> Do you have a schematic of your system by chance? Sounds like what
> I'm looking for!
>
> Thanks
>
> Justin
> On Jun 27, 2014, at 7:14, Bill Watson <Mauledriver(at)nc.rr.com> wrote:
>
>>
>> <Mauledriver(at)nc.rr.com>
>>
>> Don, I had a similar issue with my Z-14 12volt RV-10. I knew during
>> the design phase that before the start I wanted to be able to run a
>> rather extensive list of avionics (aka 'the kitchen sink'). That
>> requirement came from my experience with IFR operations in my old
>> Maule.
>>
>> A series of decisions and perhaps oversights made the list
>> particularly power hungry - (3) GRT EFISs powered on with the
>> master, a GRT EIS, and (1) G430w because that's where flight plans
>> have to be input along with a comm radio. It turns out that the (3)
>> EFISs are not only power needy but they also are sensitive to drops
>> when engine starting, i.e. they re-boot, and they take roughly 30
>> secs to come back online.
>>
>> When I had to send one unit in for service, I was warned that it may
>> well have been the result of the boot process being interrupted.
>> That shouldn't happen but it is experimental... so I make sure all 3
>> units all fully booted before starts.
>>
>> Some other issues contributed - e.g. the GRTs required clock power
>> when the master was off which tended to drag down a battery during
>> non-flying periods (later they were updated to pickup the time from
>> the GPS).
>>
>> With dual buses and batteries, my workaround was to run the
>> pre-start avionics on 1 battery and start with the other. Worked
>> okay in warm weather but a single PC680 sometimes had problems
>> turning over the cold IO-540 with it's lightweight starter. I often
>> ended up having to choose between having 2 batteries for a cold
>> start or having my avionics available for pre-start machinations.
>> Running the strobes pre-start became a 'non-starter', at least until
>> I upgraded strobe power supply units.
>>
>> Finally I put TCW's IPS product in and that finally gave me what I
>> wanted, consistently. So 3 years down the line, I've had close to 1
>> year of totally satisfactory operation of my panel around engine
>> starts. I have sat out in the rain, engine off, watching a storm
>> pass by on Nexrad, turned on the strobes for safety, cranked on both
>> batteries and gone on my merry way just as desired.
>>
>> Bill "who finds the electronics/electrics of a well equipped bass
>> boat almost as entertaining as catching bass" Watson
>>
>>
>>
>>
>>
>> On 6/26/2014 6:22 PM, donjohnston wrote:
>>>
>>> <don(at)velocity-xl.com>
>>>
>>> [quote="nuckolls.bob(at)aeroelect"]
>>>> How long does this EFIS take to 'boot'?
>>>>
>>>> Bob . . .
>>> About 30 seconds. But it is also displaying engine data.
>>>
>>>
>>>
>>>
>>> Read this topic online here:
>>>
>>> http://forums.matronics.com/viewtopic.php?p=425566#425566
>>
>>
>>
>>
> -----
> No virus found in this message.
> Checked by AVG - www.avg.com
> 06/27/14
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