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giz_60

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Hey guys...have noticed a few times that I could feel the pulsing of the device & temp rising & falling. Was finally able to catch it on Device Monitor. Seemed like every time I tried before, it would clear up. This is on a Therion 166, 250 chip, SC Aromamizer, dual coil, 24g, 316L, about 6 or 7 wraps & clocking in at .09 ohms. In the screenshots attached, you can see the fluctuation when at 350F, but when I cranked it up to 375F, the fluctuation stopped. The third screenshot shows when I cranked it up to 375F. Every thing bounced around with it except for the cold & live ohms. Atomizer analyzer showing stable build. Checked all connections, etc... Any ideas?

Edit...It has happened on different atty's as well, not just this one

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png Capture1.PNG (85.75 KB, 28 views)
png Capture2.PNG (100.95 KB, 25 views)
png Capture3.PNG (109.67 KB, 22 views)

ChunkyButt200

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Reply with quote  #2 
you appear to be hitting your "cell soft cutoff" value. that is the reason for cutting in and out of the vape. cell 1 takes a dive and cuts your vape (safety feature to keep all cells balanced and draining evenly when fired). what is the value you have set for the cutoff voltage? too high, and this is the behavior you can expect. if you're using 18650's, i would try 2.85v.
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giz_60

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Reply with quote  #3 
Cell cut off is set at 2.91...attached screen shot of mod settings.
Changed out with fresh batteries...screen shot of device monitor after battery change out
Capture12.PNG Capture11.PNG 

ChunkyButt200

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Reply with quote  #4 
you have your kanthal limit set to 100w. but you have your set wattage at 167? why?  what is lowest voltage of cell when the fire button is first pressed? seems your cells are bottoming out. put the curve at the lowest point in cell1/2's "valley" in device monitor and report back the lowest volatge seen.
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1.21 JIGAWATTS............GREAT SCOTT!........WHAT THE HELL IS A JIGAWATT?
• I am not employed by nor do I represent Evolv Inc.  All opinions are my own, they are just opinion not fact and can be wrong •
Latest versions of EScribe: DNA 200 • DNA 75  Common problems
EVOLV HELP DESK - https://helpdesk.evolvapor.com/?a=add
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giz_60

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Reply with quote  #5 
Not sure about the Kanthal limit setting...never use power mode except to burn in coils...always use TC. Here are a couple of screen shots showing 2 different fire button presses but in the same frame...
Capture13.PNG Capture14.PNG 

giz_60

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Reply with quote  #6 
Ok...haven't changed any settings & now it seems to be back to normal...this is about how this seems to happen. This is longest it has acted like this, was never able to get screen shots before. Here is a new screenshotCapture15.PNG ...
ChunkyButt200

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Reply with quote  #7 
Quote:
Originally Posted by giz_60
Not sure about the Kanthal limit setting...never use power mode except to burn in coils...always use TC. Here are a couple of screen shots showing 2 different fire button presses but in the same frame...
Capture13.PNG Capture14.PNG 
 what i meant was, when device acts up, move the cursor to see the lowest point of any of the 2 cells. your earlier screenshots showed some heavy voltage sag on cell 2. you need to measure the voltage when the device isn't working properly.

i thought the kanthal limit carried carried over to TC, it apparently doesn't.

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1.21 JIGAWATTS............GREAT SCOTT!........WHAT THE HELL IS A JIGAWATT?
• I am not employed by nor do I represent Evolv Inc.  All opinions are my own, they are just opinion not fact and can be wrong •
Latest versions of EScribe: DNA 200 • DNA 75  Common problems
EVOLV HELP DESK - https://helpdesk.evolvapor.com/?a=add
LOST VAPE WARRANTY REPAIR - http://www.lostvaperepaircenter.com
Wayneo

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Reply with quote  #8 
@giz_60 Did you change your cell soft cutoff as suggested beforehand? 
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giz_60

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Reply with quote  #9 
ChunkyButt200...those 2 screenshots are of the sag when firing...2 different fires but they fit on the same screen so took 2 screenshots so that I could move the marker from one fire point to the other...

Wayneo...haven't changed anything yet...but now the device is firing normally again...
giz_60

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Reply with quote  #10 
Here is new screenshot...10 sec. puff using the puff function in Device Monitor...not even touching the device & everything is looking normal again...haven't changed any settings..

.Capture16.PNG 

giz_60

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On the left side of this screenshot is the previous 10 sec. puff using device monitor & on the right side is me pressing the fire button

Capture17.PNG 

giz_60

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Reply with quote  #12 
Ok...Cell soft cutoff set at 2.85 now.... and uploaded to device...

Capture19.PNG Capture18.PNG 

retird

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Reply with quote  #13 
I don't think you said but are your coils contact or spaced?  Single wire, clapton, etc.?
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ChunkyButt200

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Reply with quote  #14 
something is telling the DNA board to cut power...in and out....in and out.....in and out. either sag or a poor connection whether it's cell related or....?  poor or dirty cell contacts? weak connection pressure against the cell... 

you see how cell 1 looks like a saw tooth?  but cell 2 is smoother. if you spin or wiggle the cells, while firing, does the behavior get worse/improve?

are you getting the "check battery" or "imbalanced cell" error on the mod's screen when this is happening?

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1.21 JIGAWATTS............GREAT SCOTT!........WHAT THE HELL IS A JIGAWATT?
• I am not employed by nor do I represent Evolv Inc.  All opinions are my own, they are just opinion not fact and can be wrong •
Latest versions of EScribe: DNA 200 • DNA 75  Common problems
EVOLV HELP DESK - https://helpdesk.evolvapor.com/?a=add
LOST VAPE WARRANTY REPAIR - http://www.lostvaperepaircenter.com
giz_60

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Reply with quote  #15 
This particular setup is single wire, contact coils...but have had the same thing happening on spaced coils as well...
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