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Better to avoid a stall entirely if possible
If you have a choice, put a switch at the end of travel. Even though you detect the stall condition and take steps to stop it, you are still stalling the motors. To the extent that you stall them at all, you are lessening the time that the motors will be alive to do work you really need them to do.
Current literally adds up in the form a heat. The more you can keep from heating the PTC up, the longer they will take to trip when you don't want them to.
Joe J.
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