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hollandm(at)pacbell.net
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 Posted: Thu Jan 05, 2006 8:07 pm Post subject: Re: Re: Z-24 Nusance trips |
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OVM arrived today, will install this weekend and run some tests. Thanks ever so much for checking this out. I don't have the equipment or skills to attempt it and am glad this has alerted B&C to a possible parts problem.
I'll fly it with the fix and try to simulate the voltage fluctuations that appeared to trigger the trips and report back.
I may have additional problems however. The charging voltage seems a bit high at 14.8 volts indicated. This would seem to reduce the "head-room" for the OVM circuit? My recollection is that most charging systems stabilize at around 13.8 while mine appears to remain higher than that by about a volt.
In testing this how much voltage difference should there be between the b-lead and ground versus the field lead and ground, with the alternator running? I'm beginning to suspect that there may be something amiss in the field circuit that accounts for a higher output voltage than "normal".
I followed Z-13 & Z24 when wiring the disconnect relay and used 20g wire for the field, is this adequate?
Regards,
Mike
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nuckollsr(at)cox.net
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| Posted: Fri Jan 06, 2006 5:55 am Post subject: Re: Re: Z-24 Nusance trips |
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At 08:07 PM 1/5/2006 -0800, you wrote:
OVM arrived today, will install this weekend and run some tests. Thanks
ever so much for checking this out. I don't have the equipment or skills
to attempt it and am glad this has alerted B&C to a possible parts problem.
|
My pleasure! One of the most difficult tasks a designer
has to do is offer field support on the products he/she
creates. The customer's application is the final test-bed
and one always hopes that problems will be few, small and
easily fixed. But they cannot even be addressed without
dialog and cooperation between the consumer and supplier
after the product is delivered. I and all honorable suppliers
DEPEND on dialog and cooperation to make sure the customer
gets good value for their purchase.
The ONLY situation that has provoked me to considerable
anger in the various discussions about my products is when
individuals indicated that they've injected themselves into
the relationship between me and my customers to the extent
that there were "unhappy users" who I was not permitted to
know. Further, it was easy to assume that those same customers
were spreading bad words about my products and services.
I have no problem competing with any other honorable supplier
of similar goods and services. But when subject of an overt
crusade to discredit my talents and services while working to
prevent me from making it right with a customer . . . well,
I think it speaks volumes about the perpetrator.
I've alerted B&C about our exchange. The OV you purchased
SHOULD have been fitted with all mods appropriate to the
current configuration. They're looking into how you came
to receive the one you had.
| Quote: | I'll fly it with the fix and try to simulate the voltage fluctuations that
appeared to trigger the trips and report back.
I may have additional problems however. The charging voltage seems a bit
high at 14.8 volts indicated. This would seem to reduce the "head-room"
for the OVM circuit? My recollection is that most charging systems
stabilize at around 13.8 while mine appears to remain higher than that by
about a volt.
|
Yes, that's a bit high. Not terribly significant with
respect to the OVM but kinda hard on batteries.
| Quote: | In testing this how much voltage difference should there be between the
b-lead and ground versus the field lead and ground, with the alternator
running? I'm beginning to suspect that there may be something amiss in
the field circuit that accounts for a higher output voltage than "normal".
|
What you need to know is what voltage the REGULATOR thinks
it sees. See figure 4-5 and associated text in the 'Connection.
| Quote: | I followed Z-13 & Z24 when wiring the disconnect relay and used 20g wire
for the field, is this adequate?
|
Yes. I presume you have a single-point ground also. We'll need
to get some high resolution (not necessarily "accurate" but
resolution to 0.1v or better). See what V1 (bus) and V2 (regulator
sense) voltages are. What kind of regulator are you using?
Bob . . .
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