DNA 200 Watt

[druckle]

It's happened most often with resistance between .4 and .8 ohms. I also have difficulty getting the dna 40 to detect that it should be in Temp control mode sometimes in this range. I have 3 working dna 40's and I get the same behavior from all three and with various atomizers so I don't think it's a malfunction of the DNA's or a problem with a specific atomizer.

I usually can manage to remove batteries multiple times and get it to work but it's a bit of a pain in the backside. It would be nice if I could lock IN TC mode as well as lock OUT TC mode.

Since the DNA 200 will have the capability for Titanium wire support I sort of assumed that there would either be a way to facilitate mode lock which would preclude the problem or adjustments in the autosensing capability to correct the issue but confirmation of the real capabilities would be helpful.

Thanks

Duane

 

[druckle]

The DNA200 has resistance locking. While this is mainly a band aid feature, in conjunction with profiles it enables something no other TC can do at this time -- switching between multiple hot atties.

Resistance locking doesn't address the issue I'm seeing.

Duane

 

[dr g]

It's happened most often with resistance between .4 and .8 ohms. I also have difficulty getting the DNA 40 to detect that it should be in Temp control mode sometimes in this range. I have 3 working DNA 40's and I get the same behavior from all three and with various atomizers so I don't think it's a malfunction of the DNA's or a problem with a specific atomizer.

I usually can manage to remove batteries multiple times and get it to work but it's a bit of a pain in the backside. It would be nice if I could lock IN TC mode as well as lock OUT TC mode.

Since the DNA 200 will have the capability for Titanium wire support I sort of assumed that there would either be a way to facilitate mode lock which would preclude the problem or adjustments in the autosensing capability to correct the issue but confirmation of the real capabilities would be helpful.

Thanks

Duane

You can lock it out of TC mode by turning off TC.

 

[druckle]

You can lock it out of TC mode by turning off TC.

I want to lock IN TC mode.

Duane

 

[dr g]

I want to lock IN TC mode.

Duane

That will be a tough sell with 200W preheat.

That said, the algorithm for detecting TC is different in the DNA200 to my knowledge and could well be tuned in the future if problems come up.

 

[druckle]

That will be a tough sell with 200W preheat.

That said, the algorithm for detecting TC is different in the DNA200 to my knowledge and could well be tuned in the future if problems come up.

Good that you brought that up. I'm curious why the user cannot select a lower preheat value. Ramp control is allowed in power control mode as I understand it but not allowed in TC mode. If so I don't understand the reason. It seem hmmmm backward.


Duane

 

[dr g]

Good that you brought that up. I'm curious why the user cannot select a lower preheat value. Ramp control is allowed in power control mode as I understand it but not allowed in TC mode. If so I don't understand the reason. It seem hmmmm backward.


Duane

DNA 200 Watt

 

[puffon]

It's happened most often with resistance between .4 and .8 ohms. I also have difficulty getting the DNA 40 to detect that it should be in Temp control mode sometimes in this range.

I'm pretty sure those resistances are too high for DNA40 TC mode?

 

[druckle]

DNA 200 Watt

Does the ability to set Preheat Power, Preheat Punch and Preheat Time Limit apply to both Temp Control and Power Control modes?

 

[dr g]

I'm pretty sure those resistances are too high for DNA40 TC mode?

No they are within spec, it's the titanium TCR curve that is too slow to be recognized.

Does the ability to set Preheat Power, Preheat Punch and Preheat Time Limit apply to both Temp Control and Power Control modes?

Preheat is only available in temperature control mode.

 

[druckle]

I'm pretty sure those resistances are too high for DNA40 TC mode?

They would work fine if there was the ability to lock in TC mode I think. They work fine with the SXM with titanium coils although the SXM currently requires a temp offset setting because it currently has no support for Titanium wire.

The DNA 40 also works fine with Titanium wire (with a temp offset setting)
as long as the sensing doesn't kick me out of TC mode. That's why I was asking whether one could both lock in and lock out TC mode.

Duane

 

[dr g]

They would work fine if there was the ability to lock in TC mode I think. They work fine with the SXM with titanium coils although the SXM currently requires a temp offset setting because it currently has no support for Titanium wire.

The DNA 40 also works fine with Titanium wire (with a temp offset setting)
as long as the sensing doesn't kick me out of TC mode. That's why I was asking whether one could both lock in and lock out TC mode.

Duane

Thinking about it further, with the implementation of TCR curves, the problem should go away.

 

[druckle]

No they are within spec, it's the titanium TCR curve that is too slow to be recognized.



Preheat is only available in temperature control mode.

OK...then I understood the situation completely backwards and one can set the power level of preheat power in TC mode.

Apologies

Dr g Why did you mention "That will be a tough sell with 200W preheat".

If one can set the preheat level in TC mode I guess I don't understand the "toughsell with 200w preheat" thing.

Duane

 

[dr g]

OK...then I understood the situation completely backwards and one can set the power level of preheat power in TC mode.

Apologies

Dr g Why did you mention "That will be a tough sell with 200W preheat".

If one can set the preheat level in TC mode I guess I don't understand the "toughsell with 200w preheat" thing.

Duane

The availability of preheat is the purpose of auto-detection -- you don't want kanthal/nichrome fired way above watt setting. With the availability of 200w preheat, that is more important than ever. So Evolv is unlikely to remove the ability of the board to sense kanthal/nichrome. even if you could theoretically tune preheat out entirely.

 

[druckle]

Thinking about it further, with the implementation of TCR curves, the problem should go away.

I agree. I'm growing more and more committed to Ti wire and just wanted to confirm that the DNA 200 has addressed all the little niggles that make it's use with the DNA 40 sometimes problematic.

Has anyone with a DNA 200 acquired some experience with Grade 1 or Grade 2 Ti wire? Your comments would be appreciated.

Duane

 

[druckle]

The availability of preheat is the purpose of auto-detection -- you don't want kanthal/nichrome fired way above watt setting. With the availability of 200w preheat, that is more important than ever. So Evolv is unlikely to remove the ability of the board to sense kanthal/nichrome. even if you could theoretically tune preheat out entirely.

Is there something inherently bad about user setting of TC manually as on or off as long as there is the ability to select the appropriate preheat parameters?

Duane

 

[dr g]

I agree. I'm growing more and more committed to Ti wire and just wanted to confirm that the DNA 200 has addressed all the little niggles that make it's use with the DNA 40 sometimes problematic.

Well technically it hasn't. The same safety feature exists, you are just able to tune the board differently. Coming at it from the standpoint of the manufacturer, it's not necessarily problematic for the device to not TC wire it isn't designed for.

Is there something inherently bad about user setting of TC manually as on or off as long as there is the ability to select the appropriate preheat parameters?

Duane

Yes, there is no way of really knowing what parameters are appropriate.

 

[druckle]

Well technically it hasn't. The same safety feature exists, you are just able to tune the board differently. Coming at it from the standpoint of the manufacturer, it's not necessarily problematic for the device to not TC wire it isn't designed for.



Yes, there is no way of really knowing what parameters are appropriate.

I certainly know that we have to be smart enough to not set 200 watts to fire a 0.2 ohm Kanthal coil. But I assume we'll always have to know that much whether we're in TC mode or power mode.

If anyone has Ti coil experience with the DNA 200 HELP.

Duane

 

[druckle]

Well technically it hasn't. The same safety feature exists, you are just able to tune the board differently. Coming at it from the standpoint of the manufacturer, it's not necessarily problematic for the device to not TC wire it isn't designed for.



Yes, there is no way of really knowing what parameters are appropriate.

What is it about autosensing that saves someones backside if they have a .3 ohm Ti Coil and lock in TC mode (assuming that could be done)? If any value can be set for the preheat in TC mode as I assume it can then isn't it possible for someone to set inappropriate values for a given coil with the DNA 200 now?

Also,what is it about autosensing that keeps someone from firing a 0.3 ohm kanthal coil at 200 watts with power mode locked in?

I'm really becoming more confused here and I thought I was confused when I started.

I just want to understand the DNA 200 well enough to be able to purchase a Cloudmaker Whiteout DNA 200 and know that it will work well for my Ti coils.

Duane

 

[BlueridgeDog]

I understand your question and think that it is going to come up more and more as resistance ranges get close to crossing, such that large Ti builds have resistance values that are approaching subohm Kanthal builds. You are looking for a way to force TC mode in the event that it reads your coil as likely to be Kanthal when it is not. The new joytech device is getting some coverage for a similar issue, where you can give it a TC coil, set it to the full wattage for pre-heat and it can pop out of TC mode, delivering the full wattage to a TC coil not suitable for it. I think as these devices support Ti they will eventually need a way the user can force TC mode.