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bnn(at)nethere.com Guest
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Posted: Mon Apr 17, 2006 5:45 pm Post subject: Rotax Charging |
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All,
I started the Rotax 582 for the first time today, and everything
was fine but the tachometer and the charging. I'd like some help
de-bugging, if I may.
Configuration: Rotax 582 grey head w/ 3-phase regulator wired per Z-17. GRT
EIS tach wire connected to yellow alternator output wire.
First start: Tachometer reads 0. No variation in voltage switching
alternator in or out, regardless of RPM. Voltage about 12.9V.
Disconnect regulator from alternator. Measure ACV across alternator and get
Rotax spec values. (~14 - 55 VAC depending on RPM.)
Re-connect regulator input wires and disconnect output wire and measure
voltage between it and ground: ~5 VDC invariant with RPM. Note that the EIS
RPM is now working.
Re-connect the output wire and clip DC volt meter between the regulator
output and ground: ~ 14.1 VDC at idle, decreasing to about 5 VDC at higher
RPM. EIS RPM is 0 again.
Basically I'm clueless as to how to diagnose whether the charging
system is working beyond the alternator output. Any help would be
appreciated. I think whatever's influencing the charging is probably
inhibiting the EIS RPM input, as well.
Thanks,
Guy Buchanan
K-IV 1200 / 582 / 99.9% done, thanks mostly to Bob Ducar.
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bnn(at)nethere.com Guest
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Posted: Mon Apr 17, 2006 7:13 pm Post subject: Rotax Charging |
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All,
I started the Rotax 582 for the first time today, and everything
was fine but the tachometer and the charging. I'd like some help
de-bugging, if I may.
Configuration: Rotax 582 grey head w/ 3-phase regulator wired per Z-17. GRT
EIS tach wire connected to yellow alternator output wire.
First start: Tachometer reads 0. No variation in voltage switching
alternator in or out, regardless of RPM. Voltage about 12.9V.
Disconnect regulator from alternator. Measure ACV across alternator and get
Rotax spec values. (~14 - 55 VAC depending on RPM.)
Re-connect regulator input wires and disconnect output wire and measure
voltage between it and ground: ~5 VDC invariant with RPM. Note that the EIS
RPM is now working.
Re-connect the output wire and clip DC volt meter between the regulator
output and ground: ~ 14.1 VDC at idle, decreasing to about 5 VDC at higher
RPM. EIS RPM is 0 again.
Basically I'm clueless as to how to diagnose whether the charging
system is working beyond the alternator output. Any help would be
appreciated. I think whatever's influencing the charging is probably
inhibiting the EIS RPM input, as well.
Thanks,
Guy Buchanan
K-IV 1200 / 582 / 99.9% done, thanks mostly to Bob Ducar.
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msm_9949(at)yahoo.com Guest
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Posted: Tue Apr 18, 2006 5:36 am Post subject: Rotax Charging |
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Guy, I'm looking at the simplified wiring schematic from Denny construction manual (page E-2 and it shows tach connected to gray wire coming from engine, through a 1K ohm resistor and 1/4 amp fuse. Solid yellow and yellow/black 16 ga wires go to the regulator.
Guy Buchanan <bnn(at)nethere.com> wrote:
All,
I started the Rotax 582 for the first time today, and everything
was fine but the tachometer and the charging. I'd like some help
de-bugging, if I may.
Configuration: Rotax 582 grey head w/ 3-phase regulator wired per Z-17. GRT
EIS tach wire connected to yellow alternator output wire.
First start: Tachometer reads 0. No variation in voltage switching
alternator in or out, regardless of RPM. Voltage about 12.9V.
Disconnect regulator from alternator. Measure ACV across alternator and get
Rotax spec values. (~14 - 55 VAC depending on RPM.)
Re-connect regulator input wires and disconnect output wire and measure
voltage between it and ground: ~5 VDC invariant with RPM. Note that the EIS
RPM is now working.
Re-connect the output wire and clip DC volt meter between the regulator
output and ground: ~ 14.1 VDC at idle, decreasing to about 5 VDC at higher
RPM. EIS RPM is 0 again.
Basically I'm clueless as to how to diagnose whether the charging
system is working beyond the alternator output. Any help would be
appreciated. I think whatever's influencing the charging is probably
inhibiting the EIS RPM input, as well.
Thanks,
Guy Buchanan
K-IV 1200 / 582 / 99.9% done, thanks mostly to Bob Ducar.
Marco Menezes
Model 2 582 N99KX
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morid(at)northland.lib.mi Guest
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Posted: Tue Apr 18, 2006 6:39 am Post subject: Rotax Charging |
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Guy, if I can add to this, when I built my M2 with early 582 engine it had a
resistor built into the stator assembly that tended to break very easily.
It was a common problem on the early models that caused symptoms as you
describe. It's been many years, but as I recall, the fix was to remove the
resistor and jumper it. I don't recall having to do anything else. Tach
problems disappeared after that.
Before tearing into your engine you might check into this with a Rotax
expert.
Deke
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bnn(at)nethere.com Guest
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Posted: Tue Apr 18, 2006 7:29 am Post subject: Rotax Charging |
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At 07:37 AM 4/18/2006, you wrote:
Quote: | Before tearing into your engine you might check into this with a Rotax
expert.
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Thanks Deke, I will. I think, though, that the stator is working, as when I
get the proper AC voltage measuring across the two output wires. It's the
regulator output that seems incorrect.
Guy Buchanan
K-IV 1200 / 582 / 99.9% done, thanks mostly to Bob Ducar.
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bnn(at)nethere.com Guest
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Posted: Tue Apr 18, 2006 7:29 am Post subject: Rotax Charging |
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At 06:31 AM 4/18/2006, you wrote:
Quote: | Guy, I'm looking at the simplified wiring schematic from Denny
construction manual (page E-2 and it shows tach connected to gray wire
coming from engine, through a 1K ohm resistor and 1/4 amp fuse. Solid
yellow and yellow/black 16 ga wires go to the regulator.
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The GRT EIS can't use the grey wire for some reason. They say to pick up
one of the PM alternator output wires instead. Thanks, though.
Guy Buchanan
K-IV 1200 / 582 / 99.9% done, thanks mostly to Bob Ducar.
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morid(at)northland.lib.mi Guest
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Posted: Tue Apr 18, 2006 8:33 am Post subject: Rotax Charging |
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In my case Guy, except for the tach, everything was working fine and
charging voltage was good. Another problem the early 582s had was the
regulator, which isn't really a regulator, but a rectifier. A new solid
state regulator from Spruce fixed that problem.
Have you talked to Greg at GRT? Good luck
Deke
Quote: |
At 07:37 AM 4/18/2006, you wrote:
>Before tearing into your engine you might check into this with a Rotax
>expert.
Thanks Deke, I will. I think, though, that the stator is working, as when
I
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Quote: | get the proper AC voltage measuring across the two output wires. It's the
regulator output that seems incorrect.
Guy Buchanan
K-IV 1200 / 582 / 99.9% done, thanks mostly to Bob Ducar.
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aerocontrols(at)clearwave Guest
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Posted: Tue Apr 18, 2006 9:22 am Post subject: Rotax Charging |
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Guy,
If you e-mail me off list with the serial no of your engine I can look it up
in a database to see if yours came equipped the resistor installed on the
stator.
Quote: | From whay your first post stated it sounds like you might have had the
regulator rectifier hooked up incorrectly.
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The yellow and yellow/black A/C wires eminating from the stator (not to be
confused with the back/yellow shorting wires) go to the regulator rectifier.
The gray wire goes to the tach.
Hope this helps
Bob Robertson
Light Engine Services Ltd.
Rotax Service Center
Aero Control Enterprises, Inc.
St. Albert, Ab. T8N 1M8
Ph: (Tech Support) 1-780-418-4164
Ph: (Order Line) 1-866-418-4164 (TOLL FREE)
www.rtx-av-engines.ca
www.aerocontrols.net
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