David and All,
Probably i am the only one who has ever opened an SR 3000 hub. There are no
mechanical
endstops. Not on the end of any travel movements. Maybe added later, that
i don't know.
The micro switches are not suitable for outdoor use. That point is left out.
The rating of the micro switches, if 16A? is probably for AC. DC ratings are
usually
1/4 to 1/3 of that. Left out. Why two in series? Doubt about the quality?
Left out.
If the normal working current range of the motor is 4 A, the stall current, or
startup current, is about 5 times higher. That stall current, startup current
probably is over 20 A for a very short period. Specifications of diodes are for
peak currents too. Peak current, even glitches break semiconductors. So any
time the (fine) endstop micro switches are opened, the reverse current,
momentarely
up to 20 A will fry a 5 A diode easily. Left out.
If the diode is short circuited, there is no electrical endstop working. If
there
would be a mechanical endstop, the motor could fry because it would be blocked.
Left out.
So David, please ask some more questions? I do very well understand, that you
are
not an outsider, as the person who got the first SR 3000 approved by the PFA.
I am not either, so that could balance things out. Your interest seems to
be to flatten issues with the Woodcomp SR3000, mine is to warn about the
product,
and maybe save lifes.
Regards,
Jos Okhuijsen
Visit - www.EuropaOwners.org
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