Protection Systems Settings

the following settings are related to protection system limits and behaviours once triggered on the micro drive mp units bus current limit description limits the maximum current limit allowed on the bus the unit will cap the maximum power output at the limit setpoint id 0x004d dronecan name bus cur lim units units are in amps (a) ignore zero throttle after watchdog event description ignore zero throttle requirement immediately after rebooting from a watchdog reset in the event of a software crash that causes the unit to reboot, zero throttle will not be required to resume driving after boot id 0x0168 dronecan name wwdg zer tht units n/a max regeneration current description the maximum level of regenerative current (when afw is enabled) on the bus before the unit limits a higher value will result in a quicker response on throttle down regenerative current is negatively signed id 0x003f dronecan name regen bus cur units units are in amps (a) motor overtemperature duty limit description the lowest duty cycle percentage that the motor overtemperature response can reduce the output duty cycle to setting this to a high value may cause the motor to exceed its temperature limit id 0x0193 dronecan name mot t dty lim units units are in % duty cycle (%) motor temperature limit description the maximum temperature to allow the connected sensor within the motor to reach once the temperature is reached, the motor temperature response behavior is triggered id 0x0055 dronecan name mot ovt lim units units are in degrees celsius (°c) motor temperature response description the response to apply when the motor temperature limit is reached the 'limit power output' option will dynamically reduce duty cycle between the setpoint and the 'motor overtemperature duty limit' in response to the motor temperature to prevent the limit from being exceeded the 'power step' option will reduce output duty cycle to the 'motor overtemperature duty limit' when the motor temperature limit is reached id 0x0056 dronecan name mot ovt resp units n/a value mappings 0 > none 1 > limit power output 2 > power step motor temperature sensing description toggle the motor temperature sensor function enabling will introduce motor temperature measurement and limiting id 0x0050 dronecan name mot t en units n/a motor temperature sensor coefficient description the motor temperature sensor coefficient the temperature coefficient is accessible from the sensor datasheet id 0x0052 dronecan name mot t coeff units n/a motor temperature sensor nominal resistance description the motor temperature sensor nominal resistance coefficient the coefficient is accessible from the sensor datasheet id 0x0053 dronecan name mot t nomr units n/a motor temperature sensor nominal temperature description the motor temperature sensor nominal resistance coefficient the coefficient is accessible from the sensor datasheet id 0x0054 dronecan name mot t nomt units n/a motor temperature sensor type description selection of sensor type embedded into the motor, for use with motor temperature sensing id 0x0051 dronecan name mot t type units n/a value mappings 0 > ntc 1 > pt100 2 > pt1000 overtemperature duty limit description the maximum duty cycle limit for the overtemperature response id 0x004a dronecan name ovt ramp dty min units units are in % duty cycle (%) overtemperature limit description the limit at which overtemperature event activation occurs on the controller the overtemperature response setting defines the behavior note that the controller has a separate hard temperature limit at 135c at which point the controller will shutdown id 0x0045 dronecan name temp lim units units are in degrees celsius (°c) overtemperature ramp end temperature description temperature at which the ramp should end when using "power ramp" overtemperature response at this temperature the maximum duty cycle is limited to overtemperature duty limit id 0x001b dronecan name ovt ramp temp units units are in degrees celsius (°c) overtemperature response description the response to apply to limit maximum output duty cycle when the temperature limit is reached on the controller "power step" sets the maximum duty to "overtemperature duty limit" "power ramp" linearly ramps the maximum duty cycle from 100 at "temperature limit" to "overtemperature duty limit" at "overtemperature ramp end temperature" "none" does not apply any limits to maximum output duty cycle note that the controller has a separate hard temperature limit at 135c at which point the controller will shutdown id 0x0047 dronecan name ovt resp units n/a value mappings 0 > power step 1 > power ramp 2 > none overvoltage limit response description behavior response when configured overvoltage limit on the bus is triggered bus voltage exceeded the limit id 0x003b dronecan name ovv lim res units n/a value mappings 0 > limit duty cycle output 1 > hard shutdown 2 > disabled overvoltage threshold description the maximum voltage to allow the unit to operate up to before triggering overvoltage response id 0x004b dronecan name ovv start units units are in volts (v) phase current limit description the current limit to apply to drive on the phase/output from the controller id 0x004e dronecan name ph cur lim units units are in amps (a) ptc offset resistance description offset resistance calculated by the esc when using ptc temperature sensors id 0x007e dronecan name ptc ofst res units n/a ptc reference temperature description reference temperature value to calibrate motor temperature measured by the ptc this value should be the actual temperature of the ptc sensor when this value is set to non zero, the ptc temperature calibration runs and calculates the offset resistance, and this value is set back to zero id 0x007d dronecan name ptc ref temp units n/a signal timeout period description a timeout period where no valid signal is present results in shutting the output drive the drive will be resumed once a valid signal is returned and the throttle is 0% if the arm message timeout period is less than this setting, the arm timeout period will take precedence id 0x0037 dronecan name rx timeout units units are in milliseconds (ms) start up bridge tests description run bridge self tests when the unit powers on id 0x001d dronecan name bridge tst en units n/a undervoltage limit response description behavior response when configured undervoltage limit on the bus is triggered bus voltage below the limit id 0x003c dronecan name uvv lim res units n/a value mappings 0 > limit duty cycle output 1 > hard shutdown 2 > disabled undervoltage threshold description the minimum voltage to allow the unit to operate up to before triggering undervoltage response id 0x001a dronecan name uvv start units units are in volts (v) usb power lockout description when enabled, the unit will initialise into communications only mode with drive functions locked out if it detects it is being powered over usb the unit must be restarted with a bus voltage in the operational range to exit this lockout condition this should be disabled on systems where voltage rises slowly on startup id 0x01a3 dronecan name usb pwr lockout units n/a