Panaflo fans...RPM sensor

[MrGoodTimes]

If I use the 3-wired tail instead of the 2-wired tail, will I get the RPM reading? I'm thoroughly confused by the specs on the Panaflo site & they don't state very clearly whether or not the Panaflo fans will give a readout of the RPMs or if there are even 3-wire tails available for these fans. I would like to use the L1A 80mm, because I've heard so many good things about them. The only thing is if I use them on my Soyo Dragon Plus (on CPU Fan Header 1), I would still like to leave the Fan Sensor enabled. Technically, I could still use the Panaflo (w/ the 2-wire tail) AND disable the Fan Sensor in the BIOS, but if the fan fails, it's bye bye CPU. What the f**k am I gonna do?

 

[DS1MCSE]

In my experience with the L1A, even tailed with a 3-wire connector you will not get an RPM reading. I don't believe the fans support it.

 

[CheapGator]

There are panaflo's out there that support it. They aren't L1A's though, they're L1BX 's. And if a fan doesn't support monitoring it won't register to the board. The l1a's "have none here" don't have 3 wires I believe, so since you can't send signals without a wire putting the plug on it without a wire at all wouldn't cause problems, but wouldn't register any speed either. And if someone has the l1a from bgmicro could you tell me if it came with 2 or 3 wires.

 

[Neuroanatomist]

Panaflo L1A's from bgmicro come with 2 wires.

 

[beatle]

I tried 2 different 3-pin tails from frozencpu. Neither even turned the known good fans on. I rewired them and got the fans to come on, but no rpm monitoring.

 

[HowDoesItWork]

Just something to keep in mind, but in 7 years of building my own PCs (and for friends and family) I have yet to see a CPU or case fan fail. Maybe I have been lucky, but....

Also, I'm not convinced that the fan failing alone would instantly lead to a fried CPU (no, I don't care to test it). A friend of mine ran a 1 gig Athlon-C for a week (by accident) for a week without the CPU fan plugged in, his CPU was fine. Granted he had really good case airflow and the 1 gigas didn't run as hot as the 1.13s or other CPUs... Anyway, you can have some backup with BIOS or software based heat cutoff ranges.

 

[MrGoodTimes]

Can anyone recommend a similar fan that has comparable CFMs AND low dB levels AND an RPM sensor? If none exist, then I'll seriously consider disabling the fan sensor in my BIOS as an extreme last resort. Thanks again for all the info.

By the way, Cheap Gator, where to find those L1BX's?

 

[ChefJoe]

Panasonic fans at www.digi-key.com are panaflo...

 

[Shaorinor]

<< Panasonic fans at www.digi-key.com are panaflo... >>



I could be confused by the intent of your post, but if I'm not...

Panaflo fans are made by Panasonic...so anything tagged as a Panasonic fan = Panaflo.

 

[ChefJoe]

I'm not so sure "any" Panasonic fan is a panaflo... they're a big company and have several little subsidiaries.... but the FWB? series is Panaflo. Panasonic makes/is all panaflo fans.

 

[NewCompGeek]

no

but heres a panaflow with a 3-pin connector, so you dont have to do it yourslef

Text

 

[ThisIsMatt]

You can't magically add rpm monitoring by putting a 3 pinned plug on a two lead fan

The panaflo isn't going to die on you, and if it starts to die you'll hear it (unless you have other fans largely overpowering the sound of the panaflo, in which case why are you getting a panaflo?).

Also, doesn't your motherboard have thermal shutdown if the cpu temp goes above some set temp?

 

[fast_eddie]

to read fan rpm you need a fan with the rpm sensor built into it (or put one inside yourself).

with Panaflo products you need to get one with the letter X at the end of the "fan product designation code".

as in FBA08A12H1BX

go to the Panasonic/industrial_oem website to get the full breakdown of 'reading' the "desination code". good luck finding your choice of fans with the rpm wire; it seems that whenever I have actually found them they cost 2 to 3 times as much as those with only 2 wires!

 

[Shaorinor]

You sure that's a panaflo, compgeek? Panaflo's are sleeve-hydro, not single ball bearing last I checked.

 

[MrGoodTimes]

Unfortunately, the Soyo Dragon + does not have a feature in the BIOS that will allow the system to automatically shut itself down at a certain temp. It does have a feature that detects whether or not the fan is giving an RPM signal. If there's no signal, then the system automatically shuts itself down. So, it is necessary to use a CPU fan w/ RPM signal, but the feature can be disabled for use with fans w/out RPM signal or fans where the power current runs through the Molex connectors and the RPM signal connects to CPU fan header 1.

Link for the destination code reading on the Panaflo fans
Text

 

[keyeye]

I have yet to find a panaflo 80mm L1BX. If you look at the picture for the panaflo at SVC, you'll see that there are only 2 wires to the 3 pin connector. The fan itself does not say LBX, either, suggesting that it does not support RPM monitoring.

The only options if you must have RPM monitoring that I am aware of are:
1. Buy a FBA08A12M1BX at digikey. I've not done this so you may need to add a 3pin connector which is widely available on the web if you don't want to solder. You'll need a fan mate 1 or something to slow down the fan though.
2. Vantec stealth, a much easier option. Don't have one, but haven't heard anything bad.

Other point, you may not get RPM monitoring at low RPMs. On my asus TUVX, the RPM monitoring goes down to 1600-2000 i think.

Does anyone know of a vendor for L1BXs?

 

[Boobers]

Maybe I'm missing something, but I can't find even one fan at BG micro that says it's a Panaflow. All it says is "Secondary case fan found in many computers". Not very specific. Are these old used take-outs? Others have posted BGM sells the Panaflow, but now that I look, I can't find any. If you know the part number, please post it...

Personally, I don't think you can get a Panaflow for less than $10...

 

[ThisIsMatt]

<< Maybe I'm missing something, but I can't find even one fan at BG micro that says it's a Panaflow. All it says is "Secondary case fan found in many computers". Not very specific. Are these old used take-outs? Others have posted BGM sells the Panaflow, but now that I look, I can't find any. If you know the part number, please post it...

Personally, I don't think you can get a Panaflow for less than $10... >>

That's because they've been out of stock for weeks now, and anyone posting that they have them doesn't know any better. They probably won't be getting more in, because if you haven't noticed, BG Micro doesn't really stock anything in particular, they just get random stuff...

 

[ChefJoe]

argh... digi-key panasonic fans = panaflo all voltages, options are listed, could well be in stock. rpm, on/off sensors, two pin, three pin, ultra-high... digi-key.com panaflos they do not make 80mm L1BX but do the M1BX or higher and 7 volt it or control with a rheo, etc...