Oh, I just had a read through a few previous posts and they seem to suggest PSU problems or the Brake resistor not connected, where the MOSFET has a latched protection nFAULT which can go away by quickly grounding the EN_GATE pin, although I wouldn’t try anything like this without first writing a support post to one of the guru’s.
Has your brake resistor become detached or gone open circuit. I was a little worried about the screw terminals for these high current devices, especially on moving platforms, hence why I have now soldered them directly to the board.
Here’s a bit on the EN_GATE: -
When the EN_GATE pin goes low to high, it will go through a power-up sequence, and enable gate driver, current amplifiers, charge pump, internal regulator, and so forth and reset all latched faults related to gate driver block. The EN_GATE will also reset status registers in the SPI table. All latched faults can be reset when EN_GATE is toggled after an error event unless the fault is still present.
Hope that helps.
I just spotted that you said 2 ODrives, probably PSU as towen mentioned above.