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For a few bucks you have a sensor tester
https://hobbyking.com/en_us/brushless-motor-sensor-hall-tester.html?___store=en_us |
Swapped ESCs last night and now it's working fine. I guess it was either the H-bridge or the ESC sensor port that blew.
Thanks all for the support! |
Originally Posted by monsterjamman24
(Post 15439432)
There are two types of people who run bullet plugs, those that have plugged a battery in wrong and those that will. It happens bummer but in the end we are all human and make mistakes.
When I did it myself the esc worked ok that day, however at the next event when I turned the esc on it popped. |
When the sensor cable is disconnected the ESC no longer knows which position the motor is in so it'll just sequence through all the phases from a standstill. That probably made the blown ESC work from a standstill as it wouldn't get 'hung up' on the dead phase.
Originally Posted by jon003
(Post 15442527)
Cut down one ESC wire so it can't reach the far side of the battery?
Personally i use HXTs which avoids that problem although there is still the potential for having a brain fart and connecting two batteries together! |
Originally Posted by nbTMM
(Post 15443070)
When the sensor cable is disconnected the ESC no longer knows which position the motor is in so it'll just sequence through all the phases from a standstill. That probably made the blown ESC work from a standstill as it wouldn't get 'hung up' on the dead phase.
The motor is a team scream 17.5. I know it will cog cog lower rpms, but can that damage anything? |
Does anyone know if Hobbywing can fix the blown esc. I know it was human error but does the company have an in-house repair department or will they just tell you to buy a new unit? I know when Novak was still in business they have an in-house repair department but with chips and parts being so small that the naked eye can't even see it would be kinda hard to fix stuff inside them little things.
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The "In House" is back in China.
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Originally Posted by m3rcfh
(Post 15439425)
The worst part is that I do have all the countermeasures to avoid this, positive wire is red and won't reach the negative. But I held the battery in my hand for a quick test of the servo - quick test that is probably going to cost me a new ESC :(
Thanks |
Originally Posted by AndyArdmore
(Post 15439960)
From what I've seen, both the ESC and Sensors in the motors can be fried if polarity is reversed. The ESC provides voltage to the motor's sensors, and if reversed, it could fry those sensors in the motor itself. This could cause problems, even after replacing the ESC.
Its a darn shame that polarity protection circuits, which could be implemented in ESCs, would incur significant performance losses due to voltage losses, or incur significant cost increases to mitigate. Put red paint on the wires and plugs to indicate polarity. 10 cents of paint could save $300 of ESC and motor. You gotta pay attention, or pay. |
I was reading this thread after looking at some of the capacitor upgrades on Amain. In regard to Hobbywing it seems their ESCs are now reverse polarity protected but the standard capacitor will blow. It’s good to know the ESCs are protected.
EDIT: Not all HW models have polarity protection. Internal Battery-Reverse Polarity Protection Circuit With the Built-in Reverse Voltage Protection circuit, ESC's internal parts are all protected from Cross Connection of battery power. (Note: the overall power system will be protected from damage when non-polarized filter capacitors are used; the standard electrolytic (external capacitors ) supplied for this ESC have no reverse polarity protection, so the capacitors (only) ,not the ESC will be damaged when reverse polarity installation occurs.) I’m happy to see Hobbywing has reverse polarity protection because I know one day I’ll end up making a mistake. |
Originally Posted by rearviewmirror
(Post 15814915)
I was reading this thread after looking at some of the capacitor upgrades on Amain. In regard to Hobbywing it seems their ESCs are now reverse polarity protected but the standard capacitor will blow. It’s good to know the ESCs are protected.
I guess there is no incentive to put non-polarity caps by default for a few dollars more so users realise the system is wired / plugged in incorrectly. I’m happy to see Hobbywing has reverse polarity protection because I know one day I’ll end up making a mistake. |
Originally Posted by gigaplex
(Post 15815082)
Only a couple of their models have the reverse polarity protection.
Edit. I edited my post above to reflect that so future readers of this thread don't get that impression. |
FYI the XR10 Pro Stock Spec (V4) doesn't have reverse polarity protection. To my knowledge, only the XR8 Pro G2, XR10 Pro G2, and XR10 Justock G3 have this functionality. Older versions of the same models do not.
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Originally Posted by rcbuggy88
(Post 15815279)
FYI the XR10 Pro Stock Spec (V4) doesn't have reverse polarity protection. To my knowledge, only the XR8 Pro G2, XR10 Pro G2, and XR10 Justock G3 have this functionality. Older versions of the same models do not.
Good to know! Thanks |
Originally Posted by rearviewmirror
(Post 15815265)
Good thing that happens to be the model I'm using (XR10 Pro / Pro Stock Spec) across all my cars because it's only a matter of time before I plug one of them in the wrong way.
Edit. I edited my post above to reflect that so future readers of this thread don't get that impression. |
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