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rickofudall
Joined: 19 Sep 2009
Posts: 1392
Location: Udall, KS, USA
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 Posted: Wed May 02, 2012 10:01 am Post subject: Hour meter ground |
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I have finished all the wiring of using Z-17 for a Rotax 582 powered LSA. The last thing I have is to install is the hour meter. It's a Westach 2C10-2 that I want to run off the AC side of the voltage regulator. Can I use the instrument panel ground bus or should I give it its own ground. Should I put a diode on the instrument panel ground? Should I use a shielded wire for the power connection?
Rick Girard
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Zulu Delta
Mk IIIC
Thanks, Homer GBYM
It isn't necessary to have relatives in Kansas City in order to be unhappy.
- Groucho Marx
[quote][b]
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nuckolls.bob(at)aeroelect
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| Posted: Wed May 02, 2012 10:17 am Post subject: Hour meter ground |
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At 12:56 PM 5/2/2012, you wrote:
| Quote: | I have finished all the wiring of using Z-17 for a Rotax 582 powered
LSA. The last thing I have is to install is the hour meter. It's a
Westach 2C10-2 that I want to run off the AC side of the voltage
regulator. Can I use the instrument panel ground bus or should I
give it its own ground. Should I put a diode on the instrument panel
ground? Should I use a shielded wire for the power connection?
|
If you run it directly off the two AC wires from
the PM alternator. No grounding necessary. No shielding
necessary. Don't the instructions for it describe
an AC connection?
Bob . . .
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rickofudall
Joined: 19 Sep 2009
Posts: 1392
Location: Udall, KS, USA
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| Posted: Wed May 02, 2012 11:47 am Post subject: Hour meter ground |
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Bob, Yes, as you can see they show one side of the AC leg going to ground.
Rick
On Wed, May 2, 2012 at 1:14 PM, Robert L. Nuckolls, III <nuckolls.bob(at)aeroelectric.com (nuckolls.bob(at)aeroelectric.com)> wrote:
| Quote: | --> AeroElectric-List message posted by: "Robert L. Nuckolls, III" <nuckolls.bob(at)aeroelectric.com (nuckolls.bob(at)aeroelectric.com)>
At 12:56 PM 5/2/2012, you wrote:
| Quote: | I have finished all the wiring of using Z-17 for a Rotax 582 powered LSA. The last thing I have is to install is the hour meter. It's a Westach 2C10-2 that I want to run off the AC side of the voltage regulator. Can I use the instrument panel ground bus or should I give it its own ground. Should I put a diode on the instrument panel ground? Should I use a shielded wire for the power connection?
|
If you run it directly off the two AC wires from
the PM alternator. No grounding necessary. No shielding
necessary. Don't the instructions for it describe
an AC connection?
Bob . . .
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--
Zulu Delta
Mk IIIC
Thanks, Homer GBYM
It isn't necessary to have relatives in Kansas City in order to be unhappy.
- Groucho Marx
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Bob McC
Joined: 09 Jan 2006
Posts: 258
Location: Toronto, ON
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| Posted: Wed May 02, 2012 4:23 pm Post subject: Hour meter ground |
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Not exactly. Read the Note on the drawing you provided. They say IF one leg of the AC is grounded then pin 5 should go to the grounded leg. It doesn’t say that it should be grounded, only that if it is then pin 5 is the grounded pin.
Bob McC
From: owner-aeroelectric-list-server(at)matronics.com [mailto:owner-aeroelectric-list-server(at)matronics.com] On Behalf Of Richard Girard
Sent: Wednesday, May 02, 2012 3:46 PM
To: aeroelectric-list(at)matronics.com
Subject: Re: AeroElectric-List: Hour meter ground
Bob, Yes, as you can see they show one side of the AC leg going to ground.
Rick
On Wed, May 2, 2012 at 1:14 PM, Robert L. Nuckolls, III <nuckolls.bob(at)aeroelectric.com (nuckolls.bob(at)aeroelectric.com)> wrote:
--> AeroElectric-List message posted by: "Robert L. Nuckolls, III" <nuckolls.bob(at)aeroelectric.com (nuckolls.bob(at)aeroelectric.com)>
At 12:56 PM 5/2/2012, you wrote:
I have finished all the wiring of using Z-17 for a Rotax 582 powered LSA. The last thing I have is to install is the hour meter. It's a Westach 2C10-2 that I want to run off the AC side of the voltage regulator. Can I use the instrument panel ground bus or should I give it its own ground. Should I put a diode on the instrument panel ground? Should I use a shielded wire for the power connection?
If you run it directly off the two AC wires from
the PM alternator. No grounding necessary. No shielding
necessary. Don't the instructions for it describe
an AC connection?
Bob . . .
===========
-List" target="_blank">http://www.matronics.com/Navigator?AeroElectric-List
===========
http://forums.matronics.com
===========
le, List Admin.
="_blank">http://www.matronics.com/contribution
===========
--
Zulu Delta
Mk IIIC
Thanks, Homer GBYM
It isn't necessary to have relatives in Kansas City in order to be unhappy.
- Groucho Marx
[quote][b]
| | - The Matronics AeroElectric-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
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Bob McC
Falco #908
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rickofudall
Joined: 19 Sep 2009
Posts: 1392
Location: Udall, KS, USA
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| Posted: Wed May 02, 2012 7:14 pm Post subject: Hour meter ground |
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Thanks, Bob, I didn't catch the note.
Rick
On Wed, May 2, 2012 at 7:21 PM, Bob McCallum
<robert.mccallum2(at)sympatico.ca>wrote:
[quote] ** ** **
*Not exactly. Read the Note on the drawing you provided. They say IF one
leg of the AC is grounded then pin 5 should go to the grounded leg. It
doesn’t say that it should be grounded, only that if it is then pin 5 is
the grounded pin.*
* *
*Bob McC*
* *
------------------------------
*From:* owner-aeroelectric-list-server(at)matronics.com [mailto:
owner-aeroelectric-list-server(at)matronics.com] *On Behalf Of *Richard
Girard
*Sent:* Wednesday, May 02, 2012 3:46 PM
*To:* **aeroelectric-list(at)matronics.com**
*Subject:* Re: Hour meter ground****
** **
Bob, Yes, as you can see they show one side of the AC leg going to ground
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nuckolls.bob(at)aeroelect
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| Posted: Wed May 02, 2012 8:15 pm Post subject: Hour meter ground |
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At 02:46 PM 5/2/2012, you wrote:
| Quote: | Bob, Yes, as you can see they show one side of the AC leg going to ground.
Rick
|
Hmmm . . . separate winding for the tachometer. Your
AC power to the rectifier/regulator cannot be grounded
on one side so that you can have full-wave rectification.
This tach coil is a very low power source. Do you have
an electronic tach reading this output too? In any case,
exactly where it grounds (if at all) is of little
consequence. These two systems are neither potential
antagonists nor victims. Does your tach wiring call out
grounding of one side of the signal wire?
Bob . . .
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rickofudall
Joined: 19 Sep 2009
Posts: 1392
Location: Udall, KS, USA
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| Posted: Thu May 03, 2012 6:30 am Post subject: Hour meter ground |
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On Wed, May 2, 2012 at 11:13 PM, Robert L. Nuckolls, III <nuckolls.bob(at)aeroelectric.com (nuckolls.bob(at)aeroelectric.com)> wrote:
| Quote: | --> AeroElectric-List message posted by: "Robert L. Nuckolls, III" <nuckolls.bob(at)aeroelectric.com (nuckolls.bob(at)aeroelectric.com)>
The tach has its own signal wire. None of the Rotax wiring diagrams for the various regulators has an AC going to ground. As pointed out, the note on the drawing for the hour meter says if one of the AC feed wires is grounded that wire is used for pin 5 on the meter. Otherwise the two AC wires feed the meter and it makes no difference which goes to the meter connections. |
Rick
| Quote: | At 02:46 PM 5/2/2012, you wrote:
| Quote: | Bob, Yes, as you can see they show one side of the AC leg going to ground.
Rick
|
Hmmm . . . separate winding for the tachometer. Your
AC power to the rectifier/regulator cannot be grounded
on one side so that you can have full-wave rectification.
This tach coil is a very low power source. Do you have
an electronic tach reading this output too? In any case,
exactly where it grounds (if at all) is of little
consequence. These two systems are neither potential
antagonists nor victims. Does your tach wiring call out
grounding of one side of the signal wire?
Bob . . .
====================================
-List" target="_blank">http://www.matronics.com/Navigator?AeroElectric-List
====================================
http://forums.matronics.com
====================================
le, List Admin.
="_blank">http://www.matronics.com/contribution
====================================
|
--
Zulu Delta
Mk IIIC
Thanks, Homer GBYM
It isn't necessary to have relatives in Kansas City in order to be unhappy.
- Groucho Marx
[quote][b]
| | - The Matronics AeroElectric-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?AeroElectric-List |
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_________________
The smallest miracle right in front of you is enough to make you happy.... |
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