Protection Systems Settings

the following settings are related to protection system limits and behaviours once triggered on the micro drive lpi 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) advanced no 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 advanced yes 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) advanced no motor over temperature 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 (%) advanced yes 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 behaviour is triggered id 0x0055 dronecan name mot ovt lim units units are in degrees celsius (°c) advanced yes motor temperature response description the response to apply when the motor temperature limit is reached the 'power ramp' option will gradually reduce duty cycle down to the 'motor over temperature duty limit' in response to the motor temperature the 'power step' option will reduce output duty cycle to the 'motor over temperature duty limit' when the motor temperature limit is reached id 0x0056 dronecan name mot ovt resp units n/a advanced yes value mappings 0 > none 1 > power ramp 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 advanced yes 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 advanced yes 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 advanced yes 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 advanced yes 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 advanced yes value mappings 0 > ntc 1 > pt100 2 > pt1000 over temperature duty limit description the maximum duty cycle limit for the over temperature response id 0x004a dronecan name ovt ramp dty min units units are in % duty cycle (%) advanced yes over temperature limit description the limit at which over temperature event activation occurs on the controller the over temperature response setting defines the behaviour 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) advanced no over temperature ramp end temperature description temperature at which the ramp should end when using "power ramp" over temperature response at this temperature the maximum duty cycle is limited to over temperature duty limit id 0x001b dronecan name ovt ramp temp units units are in degrees celsius (°c) advanced no over temperature 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 "over temperature duty limit" "power ramp" linearly ramps the maximum duty cycle from 100 at "temperature limit" to "over temperature duty limit" at "over temperature 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 advanced no value mappings 0 > power step 1 > power ramp 2 > none overvoltage limit response description behaviour response when configured over voltage limit on the bus is triggered bus voltage exceeded the limit id 0x003b dronecan name ovv lim res units n/a advanced yes 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) advanced yes 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) advanced no 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 advanced yes 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 advanced yes 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) advanced yes start up bridge tests description run bridge self tests when the unit powers on id 0x001d dronecan name bridge tst en units n/a advanced yes undervoltage limit response description behaviour response when configured under voltage limit on the bus is triggered bus voltage below the limit id 0x003c dronecan name uvv lim res units n/a advanced yes 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 under voltage response id 0x001a dronecan name uvv start units units are in volts (v) advanced yes 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 advanced yes