Model Boat Mayhem
Technical, Techniques, Hints, and Tips => DC Motors (Brushed) and Speed Controllers => Topic started by: Bob K on August 25, 2016, 10:10:54 am
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I had a weird problem with a 5A Mtroniks ESC. Re-set it up five times as per the leaflet, no difference.
After going into flashing LED set up mode, N set, then full fwd, then full reverse.
Problem kept repeating. Anything over 2/3 forward throttle the motor just stops.
So, I got a 5A Deans "Viper" ESC instead (yes, Viper is a brand name of Mtroniks) and now it works perfectly.
No idea what the problem was, but at least the new ESC works as it should.
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Hi Bob, sounds like the ESC was going into failsafe mode, what motor are you using?? at 5 amps, does not leave a lot of room for a tight bearing etc.
Regards
Mark
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I had noticed a problem with some Mtronics ESCs a few years ago where, if the transmitter throttle was advanced beyond the range that was acceptable to the ESC, rather than just agreeing that the range limit had been reached and continuing to give full output, its control program went into a panic mode and stopped giving any output. Different batches will have different versions of the control program.
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The plug and play esc's that I have from a few years ago are of this batch.
A fine thing for the grandchildren's boats as they learn a bit of throttle stick
control.Full stick means stop so they are a bit more gentle on the stick.
Ned
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The new Mtroniks Tio range of speed controllers don't have this issue, but the earlier Vipers do. It gets a mention on Mtroniks own site. The problem usually only manifests itself if using two controllers via a mixer. Then on two of the extremes of travel, for example full throttle and full left, the units would exceed their 'range' and stop working. Nothing you can do about it, it is in their software.
It can also show up on a small number of transmitters that have greater than normal travel from end to end on their sticks. Nothing current that I can remember, but sets of about ten to twelve years old, brands I cannot remember either ( getting old, or not caring any more, one or t'other!).
The third way it can occur is if the potentiometer in the transmitter stick has started to physically drift out of its as produced position. This does not affect servos, but can bother some speed control brands. Easily fixed with a quick tweak of the pots position in the set, followed with a dab of glue to stop it moving. Acoms, Hitec and some Futaba 2 channels used to do this..also easily fixed by throwing them out the window and buying a new set, but I digress :}