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Limp mode via CAN

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totalgeek9224
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Joined: 2019-10-16 16:51
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Limp mode via CAN

If some sort of parameter were to be able to cause the VESC to enter Limp mode, via a signal over CAN, it would allow for the hardware to protect itself.



An implementation of this could be considered with a BMS. If a CAN enabled BMS could communicate to the VESC, triggering a limp mode, in which acceleration cannot be increased, and braking ability remains, this could prevent a hard cut-off being reached, or possible hardware failure (eg a battery fire due to severely discharged P group).

A2
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the weird thing on my setup is that some boards do have limp mode (going <5mph near the end of the battery) and some do not. Any idea why this would be?

 

A2
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the weird thing on my setup is that some boards do have limp mode (going <5mph near the end of the battery) and some do not. Any idea why this would be?

 

A2
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Joined: 2019-09-08 00:38
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for some reason I have some boards I have made that have limp mode (going <5mph at low battery) and some just go full power until battery cutoff. Any idea how this could happen? all the same software and hardware.