continuous series of short beeps after powering up - how to arm properly?

[matthewcornell]

Hi All. I've calibrated the tx throttle (I have a dx8), set up gov store, but when I power up the esc with th hold engaged I hear a continuous series of short beeps. They stop only when I give it a tiny bit of throttle, which I do via a temporary linear th curve. First question: Why does it do this? Docs say:

EXPLANATIONS FOR WARNING TONE
1. Warning tone for abnormal input voltage: when powered on the ESC, it will start testing the input voltage. If the voltage is not in the normal scope, the motor will emit the warning “beep beep, beep beep, beep beep” till the voltage returns to normal (the time interval among each group of “beep beep” is 1 second).

So I guess I don't know what it means by normal scope.

Second question: Because of this, I can't yet set up my tx with two th curves plus th hold, which is what I do/did on my yge and cc escs, by setting IU1/NORM and IU2 to be flat, and IU3/TH HOLD to be flat zero. Right now I'm wasting IU1 on the linear curve. What I'd want to do is: 1) Power on tx, enable TH HOLD, set IU1 (flat 60% say), 2) power up ESC, 3) release TH HOLD and rely on soft start to spin up.

Thanks in advance!

Ps it's a Platinum 50A v3

[Lostwages]

I had the same problem i just ran the throttle trim down a little and it has worked since. Not sure if its the best way but it worked for me.

[matthewcornell]

More experimentation (low quality docs are incomplete) indicates the beeps happen whenever I have the heli-non-gov mode active. I found no way to stop them short of putting throttle up and down again. This makes no sense. WTH?

[jml79]

With my hobbywings the short beeps mean no input or not zero throttle from either the RX or the FBL. In my case the FBL. If the FBL is slow to initialize for any reason the esc starts beeping. Sometimes it stops when the FBL gets itself sorted out, sometimes I have to disconnect. I would check that you TH matches your 0 throttle position.

[matthewcornell]

> In my case the FBL. If the FBL is slow to initialize for any reason the esc starts beeping. Sometimes it stops when the FBL gets itself sorted out, sometimes I have to disconnect.

Interesting.

> I would check that you TH matches your 0 throttle position

Could you say more about that? I did a throttle calibration by putting the stick at 100%, hearing the two beeps, then lowering the stick to 0% and hearing the usual initialization tones. I have no trim or travel adjust.

Now that I think about it - I have an AR7200BX that I have to 'race' to trick it into powering up (it needs to see 0% th) and then I give 100% the second it starts to initialize. It's a PITA but it worked with my CC. Maybe that's messing it up somehow...

[Gladius]

I'm about ready to throw mine in the trash. It just beeps, and I can't enter program mode, can't adjust endpoints, monitor shows TH at the absolute minimum, but it still won't arm. I've tried 2 different receivers, no FBL unit (it's a FB), and no kinks in he servo wire. I'm pretty much all out of ideas.

I have the old 2-in-1 program box to it, which was sent with the ESC when I bought it (used), but won't connect to the ESC.