Not sure why the original fan would cause that, however everything seems to be working well now. Thanks!
The S5 has protection if it cannot read the RPM it stop the miner from mining for protection. But its something you usually notice when you monitor the temps and RPM.
But it looks at the "FAN 1" connector only. If you have a single fan if you plug it into "FAN-2" and leave "FAN-1" with nothing connected it will go into safety mode after so many seconds. Just tried it on my S5 and that's what it did on mine don't hold me to anyone elses.
Just make sure there is a fan connected to FAN-1.
I always use two fans but I make sure the fan closest to the controller board is plugged into fan 1.
Yes that is correct, but that is not what the OP was experiencing, since the miner would hash for a while. If no fan is connected it go strait into beep mode after it finish booting up and read the Fan Speed.
But its possible that the Fan has a defective circuit. Which is kinda odd that it would fail after 60-120 seconds.
He should try another fan plugged into FAN-1 Just to rule out a fan problem, Then he should try using a STATIC IP in the network settings on his miner just to make sure that his router is not changing his IP to one that makes his connection drop out and start beeping this way it will rule that possibility out as well. Just a thought.