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sn't it better to use a bigger Ampere fan so that its lifetime is stretched longer? I mean the controller gives the same amp when powering the fan, Interesting reasoning there..... How much power a fan draws has nothing to do with its lifetime. A fan drawing more power either means that it is moving more air against high static pressure or it has crappy motor/bearing. The controller is supplying the same voltage to the fan and the fan will then draw much current as it needs. Question is, how much current can the circuit traces running between the PCIe plug and fan connector handle? Ans: not much. They are thin and anything over 4 amps would be really pushing it. Now since the fans are 4-wire PWM all the power functions related to the fan spinning at x speed are inside the fan, all the controller itself provides is a low power pulse train (on the blue wire) telling how fast the fan needs to spin so those +12v and return traces (red & black wires on fan) should be the limiter. yet another great info.  Thank you sir. Question sir, if example I used the 4amp fan. does the fan "ASK" and "DRAW" or "PULL" (DEMAND) the 4amp from the controller? or the controller still controls the voltage and amp? Thanks again for your reply. |
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before you go replacing the fan with a different model you might want to check the power the current fan uses and how many watts the replacement uses. if the replacement uses too much ur gonna damage the controller. it may work for a bit of time but the extra wear on components will take its toll eventually and they will fail. are you willing to take that chance? that fan you posted uses almost 40 watts of power....im not sure what the stock fan is rated at.
The actual model of the fan is 'Delta QFR1212GHE" Its DC12v @ 2.70Ampere. This is the PUSH fan. located in front with your LAN cable. I have a broken S9 that's why I saw it's model inside. Isn't it better to use a bigger Ampere fan so that its lifetime is stretched longer? I mean the controller gives the same volt and amp when powering the fan, meaning the 3amp fan can handle a full power from the controller and still has extra .30ampere (3amp minus 2.70amp). Am I right? I also want to confirm this... Anyone with electronics knowledge please. I want to buy a aluminum framed 12v 4amp fan it will really look bad ass. If i can use it.. Here is my fan FAN DATASHEET |
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Guys, Please check if this is normal for an S9 13.5th. Is the temp normal? is the Frequency normal? Is the fan speed normal? (I think its running at full speed). Its running in an ambient temp of 29degrees Celsius (at night). What if it run in the afternoon at 37Degrees Celcius? Do I need to worry? @bitmain please check.  |
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I hope I got it right sir. Is this what I should do for my S9? Put a 35a fuse inline with the positive 3wires going to the Hashboard? How about the controller? Do I need to fuse it also?  Only thing I would change is the fuse size. For a s9 take it down to 20-25A per cable. Again, to save typing, ref https://bitcointalk.org/index.php?topic=1769399.msg18004006#msg18004006Will do sir. Thank you. |
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Give that person a cigar, they got it right!
As for the controller, while there is nothing there using very high power and I don't ever recall reading about one catastrophically failing on an Antminer actually it *would* be a good idea to fuse it. Because the fans pull a fair bit of current - like up to about 2.5a each at full speed - I'd think an 8-10a fuse would be perfect.
Perfect sir! Thank you for the cigar! Have a great day. |
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I hope I got it right sir. Is this what I should do for my S9? Put a 35a fuse inline with the positive 3wires going to the Hashboard? How about the controller? Do I need to fuse it also? |
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Kano or Slush for example..
What was your setup when you got this - #391994 at solo.ckpool.org ? Nice! |
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The EVGA 1600s are rated for continuous loads so that's plenty. I've read the reviews and the PSU can actually handle temporary peak loads up to 1700 watts (though it's terrible for the PSU). Proper functioning S9 shouldn't draw more than 1400 watts at the wall.
Thank you for this input. Im eyeing on the 1600w now. |
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My PSU is the Bitmain APW3+-12-1600W, It says it has every protection. but it failed.  A waste of money. They are $150-ish. The EVGAs are $300 - $400. I go higher end on those. Man, that really stinks. I wonder what caused the problem. Try calling the Colorado office for Bitmain warrenty at +1.844.248.6246??? I contacted their support, asked them why it happened, They said it was my PSU giving irregular voltage. They then asked me what PSU im using, I informed them its their Bitmain APW3+-12-1600W PSU. I'm waiting for a reply now. |
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Just *how* is an obvious failure of the hash board Vcore regulator -- probably the MOSFET's shorting -- the fault of a PSU? Just what in a PSU do you assume could have prevented this?
The Bitmain PSU can supply up to 133A continuously and probably at least 10-15% more before tripping out, the combined maximum current rating of 3x PCIe connectors is only 81 amps. Vcore regulator blew, all power took the easiest path - through the short circuit - and so yes, the connectors and wiring smoked. For what it's worth, I have 25 of the AWP1300 supplies and have had ZERO problems with them. Don't know about the newer APW1300+ but the older ones are very well made.
Now should all miners have a fuse between the power sockets and Vcore? IMHO yes they should but that is just speaking as an Engineer with over 50 years of dealing with power electronics...
Yes sir.. My power supply is still working with 12v.. that's odd. With your years experience in electronics. what can you suggest? Do I just put a 80a fuse between the power supply and miner? How do I put it? one fuse for the positive, and one fuse for the negative? I have 3 more S9's coming nxtweek. I can surely have a super advice from you sir. Thanks. |
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Thanks for this idea also. |
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I use a combo
1x 1300W -> Board 1 + 2
and
1x 1000W -> Board 3 + Controller
Running on 220V.
1x 1300W won't be enough
Will buy the 1600 instead? it will be enough i think? |
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Your P/S is a brute. Short-Circuit protection should have kick-in and save the day. A fuse should be mandatory in any high power design. In this case, miner. Didn't see any so far, and many manufacturers out there.  Power supply is where you do not want to cheap out. I learned that when investigating PSUs. I ended up going with an EVGA 1600 T2 because of these vital components. Not only are we talking about a $2000 computer, but potentially my house if a fire started. points taken. I used Bitmain APW3+-12-1600W. |
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Your P/S is a brute. Short-Circuit protection should have kick-in and save the day. A fuse should be mandatory in any high power design. In this case, miner. Didn't see any so far, and many manufacturers out there. My PSU is the Bitmain APW3+-12-1600W, It says it has every protection. but it failed. A waste of money. |
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Your P/S is a brute. Short-Circuit protection should have kick-in and save the day. A fuse should be mandatory in any high power design. In this case, miner. Didn't see any so far, and many manufacturers out there. How do I add a fuse between the PSU and Miner? Do you know any electronics? How many ampere should I put? I have 3 S9's coming. I would like to protect it. Its very frustrating to see my investment just get burned. tsk. |
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Definitely ouch.  Its very weird. my S9 has a AVR. but it still got burned. My pocket is hurting now. |
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from your current signature i see that you were talking about advertising a HIYP/Ponzi scheme (4% profit daily) and that will only result in a negative trust on your profile since you are advertising a "scam"
Its not scam, I actually am not sure. you are not sure. What I'm sure is I got profit out of it. ... That's how a ponzi scheme works. They pay out small amounts and get referrals and recommendations like yours. Then when the big money comes in, they are gone. You tested it by sending them 10 cents and they gave you back your 10 cents plus less than a penny. That's no test. Before you recommend them, please test it by putting your life savings into it. If you are unwilling to do that, then you shouldn't be recommending them. Otherwise, you are just part of the scam. ok, ill remove my refferal link. Thank you. |
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Its not scam, I actually am not sure. you are not sure. What I'm sure is I got profit out of it. I deposited 3 times, in 3 days, I was able to withdraw my initial deposit plus profit on the 4th day. Just be sure to deposit more than .000105 BTC, you cant withdraw it out after 1 day if your initial deposit is below .0001BTC, Minimun withdrawal is .0001BTC. Initial deposit when withdrawn have a 5% fee. Good luck to me. Finger crossed. and if you have referals you earn 5% from the referal deposit. thats why i'm trying to reffer.
You seem to be in the 'noob' stage of learning how to use bitcoin. Although I'd advise not to invest in any HYIP schemes, doubler schemes, 'Cloud' mining and simple ponzis, I've found learning the hard way(by losing your money) helps very nicely too. Oh and no, you can make any thread with ref links in bitcointalk. yes, still a noob. i'd be glad to have more information from you pro guys. I also have cloud mining, two sites actually. hehe.. |
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