[400V]

This community helped me alot, and also learned me how to make some buck on the side , so i want to contribute to all you guys.


Ok, so here is my setup, and after a year there is still no major problem, only few miners show x from time to time, but no big deal!


I'm reading all the time that all you guys have problems with burned out boards,PSU, everything!

1. ALL HAPPENS FROM POWER SPIKES and NOT REGULATED VOLTAGE! of course you will have to have professionally installed electrical installation, so if anything happens the "automatic power breaker" does the job!
 
This is cheap way to go without UPS but still control your voltage spikes that do nasty stuff. I was logging the spikes in my house and saw that when the power outage occurs and when the power come back again, one time hit the 400V and our grid is 220V!! All electrical equipment have some tolerance for this spikes, BUT not for 400V AC, that is too much, the low voltage also make huge problems!
Our equipment needs constant regulated voltage to operate in normal parameters.

First see this picture


So i control the voltage spikes with the response time regulator which is set to 0.1sec, and my low threshold is 210VAC , high 242VAC, so when the power outage occurs the relay stops the voltage to the contactor and the power is out for the miners, so they don't get fried when the voltage spikes to haven, and when is back it turns on but only when the voltage is in my setup limits so only when is between 210<>242.

This beautiful monitoring relay, watch that spikes and responds every time ON TIME!

The main power is also going through 50AMP automatic breakers, my max amp per Phase is 64A.

That's it guys, for ~0.5BTC you can do this setup and keep your equipment fresh and happy

hi guys,

i have spare stoock s4 fan, it works when is connected on the s4. I want to use for other things but i cant get it to start only with PSU 12v, i tried connecting the red and black wire to adapter 12v5A but it wont start. I want to run it at full speed

Can i use this fan without pwm controller?
Thanks in advance

Hi guys

i wanted to share my setup for automatic change fans speed, frequency and possible voltage but the newest firmware for the S4 does not allow the voltage change and its stuck on 0725v.

So i have created batch file that executes in the morning to slow the fans down and downclock the frequency 187.5Mhz of my miners, and also created another batch file that executes around 17h to bring them back to normal fan mode and frequency to my choosing.

For this setup the following files are required.
1. PSCP (an SCP client, i.e. command-line secure file copy) http://www.chiark.greenend.org.uk/~sgtatham/putty/download.html
2. Plink (a command-line interface to the PuTTY back ends)  http://www.chiark.greenend.org.uk/~sgtatham/putty/download.html
3. Task Scheduler      you can use the windows version or the no installation file from freebyte  http://www.freebyte.com/fbtaskscheduler/
4.WinScp

At first i set the required voltage and frequency on my miners and after that downloaded the cgminer.sh from /etc/init.d/    and cgminer.conf from /config   and i made separate folders for every miner and put the files there.

After that i downclocked all the miners to 187.5Mhz and 0700v and also made separate folders for my slow configuration  and downloaded and saved the files there (cgminer.sh and cgminer.conf) and edited the cgminer.sh to add the --bitmain-homemode  option to slow the fans.

i also created commands.txt so i can work batch commands through pscp, in this file i put only the cgminer restart line (/etc/init.d/cgminer.sh restart)

Sometimes i must hard restart a miner because it hangs when changing back to normal but its not happening always i think its because of changing the frequency, or maybe i should  use reboot command instead of cgminer restart. -- suggestions are welcome

In the end i put the slow.bat and normal.bat in task scheduler and choose the time when to execute.

So here is the slow.bat

@echo Making Slow Antminer 10 with freq 187.5 volt 0700
pscp.exe -scp -pw admin j:\batch\slow10\cgminer.sh root@192.168.1.10:/etc/init.d/cgminer.sh
pscp.exe -scp -pw admin j:\batch\slow10\cgminer.conf root@192.168.1.10:/config/cgminer.conf
plink.exe root@192.168.1.10 -pw admin -batch -m commands.txt



@echo Making Slow Antminer 11 with freq 187.5 volt 0700
pscp.exe -scp -pw admin j:\batch\slow11\cgminer.sh root@192.168.1.11:/etc/init.d/cgminer.sh
pscp.exe -scp -pw admin j:\batch\slow11\cgminer.conf root@192.168.1.11:/config/cgminer.conf
plink.exe root@192.168.1.11 -pw admin -batch -m commands.txt



@echo Making Slow Antminer 12 with freq 187.5 volt 0700
pscp.exe -scp -pw admin j:\batch\slow12\cgminer.sh root@192.168.1.12:/etc/init.d/cgminer.sh
pscp.exe -scp -pw admin j:\batch\slow12\cgminer.conf root@192.168.1.12:/config/cgminer.conf
plink.exe root@192.168.1.12 -pw admin -batch -m commands.txt



@echo Making Slow Antminer 13 with freq 187.5 volt 0700
pscp.exe -scp -pw admin j:\batch\slow13\cgminer.sh root@192.168.1.13:/etc/init.d/cgminer.sh
pscp.exe -scp -pw admin j:\batch\slow13\cgminer.conf root@192.168.1.13:/config/cgminer.conf
plink.exe root@192.168.1.13 -pw admin -batch -m commands.txt



@echo Making Slow Antminer 14 with freq 187.5 volt 0700
pscp.exe -scp -pw admin j:\batch\slow14\cgminer.sh root@192.168.1.14:/etc/init.d/cgminer.sh
pscp.exe -scp -pw admin j:\batch\slow14\cgminer.conf root@192.168.1.14:/config/cgminer.conf
plink.exe root@192.168.1.14 -pw admin -batch -m commands.txt

And the normal.bat

@echo Making normal Antminer 10 with freq 200 volt 0725
pscp.exe -scp -pw admin j:\batch\normal10\cgminer.sh root@192.168.1.10:/etc/init.d/cgminer.sh
pscp.exe -scp -pw admin j:\batch\normal10\cgminer.conf root@192.168.1.10:/config/cgminer.conf
plink.exe root@192.168.1.10 -pw admin -batch -m commands.txt



@echo Making normal Antminer 11 with freq 200 volt 0725
pscp.exe -scp -pw admin j:\batch\normal11\cgminer.sh root@192.168.1.11:/etc/init.d/cgminer.sh
pscp.exe -scp -pw admin j:\batch\normal11\cgminer.conf root@192.168.1.11:/config/cgminer.conf
plink.exe root@192.168.1.11 -pw admin -batch -m commands.txt



@echo Making normal Antminer 12 with freq 200 volt 0725
pscp.exe -scp -pw admin j:\batch\normal12\cgminer.sh root@192.168.1.12:/etc/init.d/cgminer.sh
pscp.exe -scp -pw admin j:\batch\normal12\cgminer.conf root@192.168.1.12:/config/cgminer.conf
plink.exe root@192.168.1.12 -pw admin -batch -m commands.txt



@echo Making normal Antminer 13 with freq 200 volt 0725
pscp.exe -scp -pw admin j:\batch\normal13\cgminer.sh root@192.168.1.13:/etc/init.d/cgminer.sh
pscp.exe -scp -pw admin j:\batch\normal13\cgminer.conf root@192.168.1.13:/config/cgminer.conf
plink.exe root@192.168.1.13 -pw admin -batch -m commands.txt



@echo Making normal Antminer 14 with freq 200 volt 0725
pscp.exe -scp -pw admin j:\batch\normal14\cgminer.sh root@192.168.1.14:/etc/init.d/cgminer.sh
pscp.exe -scp -pw admin j:\batch\normal14\cgminer.conf root@192.168.1.14:/config/cgminer.conf
plink.exe root@192.168.1.14 -pw admin -batch -m commands.txt