Motor Drive Settings

The following settings are related to the motor drive and control interfaces on the microDRIVE units.
AFW Enabled
Description
Enables regenerative braking. The result is far greater linearity on ESC output, alongside increased efficiency. Must be disabled for use with power supplies or systems that cannot handle regenerative current (eg. tethers).
CAN Name
AFW_EN
Units
N/A
Advanced
NO
Automatic Timing Advance
Description
Toggle the operation of automatically varying the timing advance to the connected motor depending on loading conditions. In most cases, leaving this function enabled results in the best overall efficiency.
CAN Name
AUTO_TIMING
Units
N/A
Advanced
YES
Beep Enable
Description
Enable the output of status beeps through the connected motor.
CAN Name
BEEP_EN
Units
N/A
Advanced
NO
Brake on Stop
Description
Enables brake once the unit is given a 0% throttle signal. Prevents windmilling of propellers.
CAN Name
BRK_ON_STOP
Units
N/A
Advanced
NO
Calibrated Values Enable
Description
Utilise the factory calibrated values for onboard sensors. Disable for base uncalibrated scaling.
CAN Name
USE_CAL_EN
Units
N/A
Advanced
YES
Drive Mode
Description
Tailor output drive method. Normal will scale 0-100% throttle in the desired direction. Reversible will scale -100-0-100% throttle.
CAN Name
DRV_MODE
Units
N/A
Advanced
NO
Value Mappings:
0 -> Normal
1 -> Reversible
2 -> RPM
Drive Topology
Description
The algorithm to use commutating the motor.
CAN Name
DRV_TOP
Units
N/A
Advanced
YES
Value Mappings:
0 -> Six Step
1 -> FOCAL
Fixed Timing Advance
Description
Force the motor timing advance to a constant value.
CAN Name
TIMING_ADV
Units
Units are in degress (°)
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
Maximum FOCAL PWM Frequency
Description
The maximum PWM frequency to allow on the output to the motor when operating using FOCAL. Higher values result in smoother motor drive, and higher controller temperatures. FOCAL has a lower frequency range than BLDC.
CAN Name
MAX_FOCAL_FREQ
Units
Units are in Hertz (Hz)
Advanced
YES
Maximum PWM Frequency
Description
The maximum PWM frequency to allow on the output to the motor. Higher values result in smoother motor drive, and higher controller temperatures.
CAN Name
MAX_PWM_FREQ
Units
Units are in Hertz (Hz)
Advanced
YES
Maximum RPM Limit
Description
The maximum RPM to limit the output to when the limit is enabled.
CAN Name
MAX_RPM_LIM
Units
Units are in Revolutions Per Minute (RPM)
Advanced
YES
Minimum PWM Frequency
Description
The minimum PWM frequency to allow on the output to the motor. Lower values result in reduced linearity and capacitor lifetimes.
CAN Name
MIN_PWM_FREQ
Units
Units are in Hertz (Hz)
Advanced
YES
Motor Kv
Description
Back EMF constant for connected motor. Used for stability calcuations. Zero value indicates automatic specification.
CAN Name
MOT_KV
Units
Units are in RPM per Volt (RPM/V)
Advanced
YES
Motor Pole Pairs
Description
Number of motor pole pairs of the connected motor, utilised for scaling eRPM to RPM.
CAN Name
MOT_POLE_PAIRS
Units
N/A
Advanced
NO
Normal Rotation
Description
Output rotation direction. Toggling this setting reverses the output direction without requiring cabling modification.
CAN Name
DIRECTION
Units
N/A
Advanced
NO
Ramp Down Rate
Description
Slew rate to apply to transients when decreasing the output duty cycle to the motor.
CAN Name
RAMP_DWN_RT
Units
Units are in % per millisecond (%/Ms)
Advanced
NO
Ramp to Stop Rate
Description
The rate at which the unit will reduce power after commanded to stop (zero throttle command). The unit is % per millisecond applied to the commanded output duty cycle.
CAN Name
RAMP_STOP_RT
Units
Units are in % per millisecond (%/Ms)
Advanced
YES
Ramp Up Rate
Description
Slew rate to apply to transients when increasing the output duty cycle to the motor.
CAN Name
RAMP_UP_RT
Units
Units are in % per millisecond (%/Ms)
Advanced
NO
RPM Limit
Description
Enable RPM limit. The unit will decrease the output duty cycle as the approach to setting limit occurs.
CAN Name
RPM_LIM_EN
Units
N/A
Advanced
YES
﻿

Description	Enables regenerative braking. The result is far greater linearity on ESC output, alongside increased efficiency. Must be disabled for use with power supplies or systems that cannot handle regenerative current (eg. tethers).
CAN Name	AFW_EN
Units	N/A
Advanced	NO

Description	Toggle the operation of automatically varying the timing advance to the connected motor depending on loading conditions. In most cases, leaving this function enabled results in the best overall efficiency.
CAN Name	AUTO_TIMING
Units	N/A
Advanced	YES

Description	Enable the output of status beeps through the connected motor.
CAN Name	BEEP_EN
Units	N/A
Advanced	NO

Description	Enables brake once the unit is given a 0% throttle signal. Prevents windmilling of propellers.
CAN Name	BRK_ON_STOP
Units	N/A
Advanced	NO

Description	Utilise the factory calibrated values for onboard sensors. Disable for base uncalibrated scaling.
CAN Name	USE_CAL_EN
Units	N/A
Advanced	YES

Description	Tailor output drive method. Normal will scale 0-100% throttle in the desired direction. Reversible will scale -100-0-100% throttle.
CAN Name	DRV_MODE
Units	N/A
Advanced	NO

Description	The algorithm to use commutating the motor.
CAN Name	DRV_TOP
Units	N/A
Advanced	YES

Description	Force the motor timing advance to a constant value.
CAN Name	TIMING_ADV
Units	Units are in degress (°)
Advanced	YES

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

Description	The maximum PWM frequency to allow on the output to the motor when operating using FOCAL. Higher values result in smoother motor drive, and higher controller temperatures. FOCAL has a lower frequency range than BLDC.
CAN Name	MAX_FOCAL_FREQ
Units	Units are in Hertz (Hz)
Advanced	YES

Description	The maximum PWM frequency to allow on the output to the motor. Higher values result in smoother motor drive, and higher controller temperatures.
CAN Name	MAX_PWM_FREQ
Units	Units are in Hertz (Hz)
Advanced	YES

Description	The maximum RPM to limit the output to when the limit is enabled.
CAN Name	MAX_RPM_LIM
Units	Units are in Revolutions Per Minute (RPM)
Advanced	YES

Description	The minimum PWM frequency to allow on the output to the motor. Lower values result in reduced linearity and capacitor lifetimes.
CAN Name	MIN_PWM_FREQ
Units	Units are in Hertz (Hz)
Advanced	YES

Description	Back EMF constant for connected motor. Used for stability calcuations. Zero value indicates automatic specification.
CAN Name	MOT_KV
Units	Units are in RPM per Volt (RPM/V)
Advanced	YES

Description	Number of motor pole pairs of the connected motor, utilised for scaling eRPM to RPM.
CAN Name	MOT_POLE_PAIRS
Units	N/A
Advanced	NO

Description	Output rotation direction. Toggling this setting reverses the output direction without requiring cabling modification.
CAN Name	DIRECTION
Units	N/A
Advanced	NO

Description	Slew rate to apply to transients when decreasing the output duty cycle to the motor.
CAN Name	RAMP_DWN_RT
Units	Units are in % per millisecond (%/Ms)
Advanced	NO

Description	The rate at which the unit will reduce power after commanded to stop (zero throttle command). The unit is % per millisecond applied to the commanded output duty cycle.
CAN Name	RAMP_STOP_RT
Units	Units are in % per millisecond (%/Ms)
Advanced	YES

Description	Slew rate to apply to transients when increasing the output duty cycle to the motor.
CAN Name	RAMP_UP_RT
Units	Units are in % per millisecond (%/Ms)
Advanced	NO

Description	Enable RPM limit. The unit will decrease the output duty cycle as the approach to setting limit occurs.
CAN Name	RPM_LIM_EN
Units	N/A
Advanced	YES

Full Parameter List

Error Handling Settings