Protections
The protection comprises low-level, high-priority mechanisms that are responsible for protecting the controller itself. If any of the systems is triggered, the controller intervenes to prevent the hazardous situation from further developing and the driver state will signalize it. On the contrary to the low-priority limiters, high-priority protections are intervening on the global scale, e.g. disregarding the field weakening, etc.
All the limiters and protections are designed act proportionally in a natural feedback loop. Unless the absolute thresholds are crossed, the controller never 'cuts off', but finds a stable point at which the derated performance is matching the required criteria.
| Protection | Minimum reaction time |
|---|---|
| over-current | < 2 us |
| under-voltage | < 2 us |
| over-voltage | < 50 us |
| sensor error | < 50 us |
| sync error | < 50 us |
| range error | < 50 us |
| over-temperature | < 1 ms |
| ADC error | < 1 ms |
For information about protecting motor or battery, check the Limiters section.