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Martin Pohl
Joined: 30 Jan 2006 Posts: 118 Location: CH-8645 Jona SG, Switzerland
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Posted: Fri Feb 09, 2007 6:53 am Post subject: Rotax Rectifier Wiring |
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Hello
The Rotax-Installation Manual, engine electric, 17-1, says: "Attention: Do not interupt circuit between Terminal C and +B of rectifier-regulator during engine run, as otherwise charging will stop."
What does that mean? Can I switch of the rectifier/regulator i.e. charging process with interupt of C/+B (similar to switching of the alternator field switch)?
Martin
Zodiac XL
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_________________ Martin Pohl
Zodiac XL QBK
8645 Jona, Switzerland
http://www.pohltec.ch/ZodiacXL/Main.html |
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vaughnray(at)bvunet.net Guest
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Posted: Fri Feb 09, 2007 8:38 am Post subject: Rotax Rectifier Wiring |
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Martin,
Based on what I've heard from Europa builders before me, the regulater will
destruct if you disconnect the "C" lead from the "B+" and "R" leads. It
looks to me like drawing Z-16 would do that, although I am dangerously
ignorant when it comes to electronics. I am waiting to speak to the Lockwood
engineers before I proceed with my schematics. If I was you, I would not
proceed until I fully understood the whats and whys of this issue. That is
why I can sign off with.....
Confused enough to consider selling the kit
Vaughn
---
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nuckollsr(at)cox.net Guest
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Posted: Sat Feb 10, 2007 9:01 am Post subject: Rotax Rectifier Wiring |
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At 11:37 AM 2/9/2007 -0500, you wrote:
Quote: |
<vaughnray(at)bvunet.net>
Martin,
Based on what I've heard from Europa builders before me, the regulater
will destruct if you disconnect the "C" lead from the "B+" and "R" leads.
It looks to me like drawing Z-16 would do that, although I am dangerously
ignorant when it comes to electronics. I am waiting to speak to the
Lockwood engineers before I proceed with my schematics. If I was you, I
would not proceed until I fully understood the whats and whys of this
issue. That is why I can sign off with.....
Confused enough to consider selling the kit
|
This is one of several reasons why I like to get a real
schematic of the device being discussed. This is especially
important when you have conflicting anecdotal data. One of
my favorite minor philosophers once offered:
"There are no contradictions. When you believe you've
encountered a contradiction, examine your premises.
You will discover that one of them is wrong."
Quote: | >The Rotax-Installation Manual, engine electric, 17-1, says: "Attention:
>Do not interupt circuit between Terminal C and +B of rectifier-regulator
>during engine run, as otherwise charging will stop."
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I'll suggest it means exactly what it says. Unless C is
connected, the regulator shuts down.
Quote: | >What does that mean? Can I switch of the rectifier/regulator i.e.
>charging process with interupt of C/+B (similar to switching of the
>alternator field switch)?
|
Some time ago, one of the readers on the List supplied me
with the following schematic:
http://www.aeroelectric.com/Pictures/Regulators/regul_912.jpg
An examination of the circuit reveals that terminal "C"
is the voltage sense lead for the regulator. Further,
it supplies power necessary to power up the regulator's
control circuits. Removal of power from this lead will cause
the system to simply shut down.
Figure Z-16 utilized terminal C as a shutdown or control
pin for about ten years with no reported difficulties. More
recently (June of last year) we modified Z-16 to move the
the control relay to the AC side of the regulator rectifier
as shown in the latest revision to Appendiz Z at:
http://aeroelectric.com/articles/Rev11/AppZ_R11J.pdf
Relays are a lot happier controlling AC voltage than DC
voltage and it seems a better location as shown . . .
but either configuration functions as intended.
Bob . . .
----------------------------------------
( IF one aspires to be "world class", )
( what ever you do must be exercised )
( EVERY day . . . )
( R. L. Nuckolls III )
----------------------------------------
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Martin Pohl
Joined: 30 Jan 2006 Posts: 118 Location: CH-8645 Jona SG, Switzerland
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