Troubleshooting
Common issues that may be encountered and where to seek further information.
No signal was detected. The unit is beeping. The status LED is purple.
By default the unit will respond to both a DroneCAN (CAN bus) signal and a serial (DShot/PWM) signal.
If the CAN bus signal is not being detected, confirm that the bus is correctly terminated.
If the serial signal is not being detected ensure that the correct signal type (or automatic detection) is selected in the Signal Type parameter. If the signal that is failing to acquire is a PWM signal, note that a PWM signal requires a series of zero-throttle pulses to be received before it will acquire. The serial input and output are isolated and require external power on the VCC pin. Confirm this pin is receiving power.
Relevant parameters:
Motor makes a skipping noise during throttle up or down.
The unit cannot return power to the bus, if the commanded event is a throttle down that causes the skipping. This typically indicates a power supply cannot handle reverse power, and regenerative power should be disabled. See AFW parameter.
During high-power acceleration, skipping typically indicates the unit has reached the bus current or phase current limit and is reducing output drive to remain within limits. This is visible within the data logs. Increasing the limit (within unit hardware limits) can be performed.
Relevant parameters:
The LED is blinking RED on power on.
A fault was detected on start-up, connect to the configuration tool to see further details about what error was detected. The error will need to be resolved before normal operation can continue. The errors are also reported to the DroneCAN debug message system if using DroneCAN signalling.
Relevant section:
The LED is solid RED on power up.
An unrecoverable error was detected, either in the unit's hardware or firmware. The unit should be returned.