Steve Hagar wrote:
>
> The Rotax installation maual, in its "Requirements for flawless operation
> of the rectifyer-regulator", states: "Never sever connection between C and
> B+ of regualator e.g. by removal of a fuse". Z-16 the way I am wiring my
> system shows a break here going to the crow bar module and the controlling
> over voltage relay that is added in extra. Can someone shed some more
> light on this for me so I feel better about it.
If the "C" line is never to be severed, it makes no sense to bring it out
external
to the regulator unless it has a useful purpose. The EXP-bus people have
no problem with severing the "C" line, as they -- also in series with its OV
relay
-- provide an "Alt" on-off switch. Apparently, letting the "C" line float
disables the regulator.
OTOH, Bob Nuckolls brings the "C" to ground upon OV trip. In his setup, in
normal
service it's always connected ultimately to B+ and R, like Rotax wants.
Ideally,
OV trip should mean the regulator has failed, so it should make no difference
what happens to this line. IOW, nothing to worry about, as best I can
tell.
Regards,
Fred F.
|