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Unread 13-05-2014, 11:31
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Re: 2-Speed vs 1-Speed drivetrain

Quote:
Originally Posted by Monochron View Post
Quick aside question, am I right in assuming that the wheels slipping is the only thing that prevents the breaker from tripping at low fps?

For instance, if a weird situation occurred where a gearing of 5 fps did NOT slip the wheels in a pushing match, the breaker would still trip in about the same amount of time as if the gearing was 16 fps correct? Basically, the CIMs draw the same amount of current at stall regardless of the gearing so any stalling of a 6 CIM drive is just as dangerous.

Am I right in that assessment?
If the motors are stalled, they will draw their stall current.

That said, there's pretty much no traction material available that won't slip drive wheels with 6 CIMS geared for 5 fps.

Drive trains are "traction limited" (wheels slip) for the most part. The amount of current drawn per motor while the wheels are slipping depends on your gear ratio. Going well above 40A per motor can trip the resetting breakers. Going well above 200A per system risks tripping your main breaker a bit too quickly.
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