Protection Systems Settings

the following settings are related to protection system limits and behaviours once triggered on the nano drive 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 can 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 can 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 can name regen bus cur units units are in amps (a) advanced no 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 can 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 can name mot ovt resp units n/a advanced yes value mappings 0 > none 1 > limit motor temperature sensing description toggle the motor temperature sensor function enabling will introduce motor temperature measurement and limiting can 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 can 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 can 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 can 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 can 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 can 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 can 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 can 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 can 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 can 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 can 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 can 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 can 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 can 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 can 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 can 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 can 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 can name uvv start units units are in volts (v) advanced yes