Feature or bug?

Started by Volvo Farmer, February 11, 2012, 10:29:49 AM

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Volvo Farmer

I needed to fool with batteries lately so have had to shut all the power off to the Classic 150 for the wind turbine.  I am using a graph set in memory spot "2", and the graph I have set in memory spot "1" has my cut in voltage a few volts lower.

On hard reset, the Classic reverted to memory slot "1" and I went out during solar absorb, and heard the relays clicking away with no wind and the controller trying to cut in at 25V on 29V batteries.  I recalled memory "2" with 30V cut-in  and all was well again.

Would it be an easy thing to change in firmware to have the controller remember which curve I was using after a hard reset?  My firmware is very old and has never been updated, but I did not see this phenomenon on the list of fixes.




Halfcrazy

#1
Volvo
Can you explain "Hard Reset" is this just s power cycle? To the best of my knowledge this has never worked that way. Let me know and I will look deeper into it.

One possible explanation would be if you went to the Wind graph and hit mem and found preset 2 and hit recall. If you did not hit enter at this point the Classic would use location 2 but if power cycled would revert back to the last Saved curve.

Ryan
Changing the way wind turbines operate one smoke filled box at a time

boB


Ryan has the answer here but   for the sake of clarity, (hopefully), let me throw some
redundancy at it...


While in the power curve graph editor,
ENTER tells the Classic to remember the curve in its internal memory that is displayed on the graph.
MEM---RECALL will put the recalled curve into the Classic but unless you press ENTER,
the Classic will not remember that graph when it is reset (powered down and back up)

The MEM 1 through 9  are actually in the MNGP itself. Pressing SAVE in the MEM screen
will save whatever graph is displayed into that MEM location in the MNGP and the MNGP
will remember what MEM location you were on when you last pressed SAVE.

One way to help remember what is going on here is when the Classic/MNGP is powered
down and back up again, MNGP comes up in the status screen.  The MNGP's status screen
doesn't have any MEM or wind graphs associated with it, so the Classic loads
the graph last shown when you pressed ENTER last time in the wind graph
screen.  You could unplug the MNGP and the Classic will still load that last curve from
its internal non-vomitable memory.

So if, when in the wind graph editor, you do a MEM---SAVE and then press ENTER,
the MNGP's MEM number, the graph stored in that MEM number location and the
Classic's memorized power curve should be the same, even if you turn the power
off and back on again.

Whenever you go to the wind graph editor, the MNGP reads the power curve from
the Classic.  You can adjust the curve right there or recall another curve from
the MNGP's MEM and it will be sent to the Classic and will be displaying that curve
on the graph, but the Classic will not remember that adjusted or recalled curve
until the ENTER button is stored and the message says that the data was sent
and saved.

Hope that helps to clarify it more.

boB

K7IQ 🌛  He/She/Me

Volvo Farmer

Aha!, neither feature nor bug... Operator error!  Thanks for the explanation.   By hard reset, I meant power off. I will be sure to save/enter the graph I want before powering off next time. I didn't know the thing would use the graph without saving it!