|Dec 10, 2012, 06:07 PM|
Almost a disaster
As coordinated previously with Alan T, I am powering a geared brushed Astro 25 with two 3S 2220 mah lipos in series
(25 volts) using an Astro 211 ESC and using an Optima 6 Lite receiver, powering the servos with a Kool Flite UBEC and the receiver direct from the motor battery through the SPC port. The throttle signal output from the receiver is fed through a Li-Saver (not shown on diagram) from which provides a low voltage cutoff feature that the old ESC is lacking.
When I plugged in the motor battery, nothing worked except the UBEC got very hot and started to smoke faintly. I disconnected the battery and let the UBEC cool off. I found that I had the connector to the SPC port plugged in backwards which somehow caused the UBEC to get hot nearly letting the magic smoke out. I disconnected the battery and let the UBEC cool. When I plugged power lead back into the SPC port with proper polarity, everything worked normally and Kool Flight UBEC stayed cool. Moral: Make sure to get the plus and minus orientation of the SPC pigtail connector correct before applying power.
|Category||Thread||Thread Starter||Forum||Replies||Last Post|
|Discussion||Help! Disaster Assembling new Radian||EddGee||Sailplane Talk||13||Apr 21, 2012 07:30 AM|
|Discussion||Training for disaster?||Hixxer||Simulators||1||Mar 19, 2012 06:37 AM|
|For Sale||I HAD A disaster almost burn the house down :(, got some parts to help you guys out||sherlockshah||Aircraft - Electric - Jets (FS/W)||8||Nov 23, 2010 06:42 PM|
|Discussion||Disaster Area's latest disaster||Disaster Area||Mini Helis||19||Dec 13, 2007 04:06 AM|