Still trying to set up my ARC200…it’s taking weeks 
The motor now responds to the remote but once it starts it won’t stop even when I take my finger off the trigger.
I am using the ‘Torque mode forward only’ and Jez has been kind enough to suggest a few options including reducing the RPM in the speed settings but this hasn’t worked, I’m now experimenting with changing the ‘current command offset’ settings
Has anyone else experienced this problem?
Thanks
Maybe a dumb q but, is there some kind of a failsafe? Min allowed throttle or some crap like that?
There is a failsafe wherby if you loose signal from the remote it will kill the power but haven’t tested it yet
Try setting the ‘max phase regen’ current to a small positive value eg 10A. I have the same if I set it to zero. (Keeps spinning)
I remember type of failsafe with arducopter where on letting go of the gas stick, throttle would be 25% by default. Almost chopped my head off 1 time. I did read here or somewhere some1 used this for a kind of copter so maybe there is a “hidden setting”. I dont have arc so just a thought.
Tried upping the ‘max phase regen’ to 10 still doing the same.
I wonder if it’s a problem with my Maytech?
Ask FR what Kv the motor he used was. Alternatively set your RPM limit to 35000 and then look at what RPM is actually reached when you run your motor in the telemetry panel in the ARC GUI.
Then export your Arc200 config and put it here so I can take a look at it.
Hi Jez,
FR said that it is a 360 kv motor.
Also looking back through previous conversations with him when I first got the motor it is limited to 90 amps when using a 12s battery, so 4000W
Not sure how this affects my ARC set up
Set the rpm to 18000 as that’s the max RPM the motor can get to.
Send me all the settings your motor has as well.
Thanks Jez, I’ll have another go tomorrow and try the RPM at 18000 and see if that does the trick, I’ll then also share the data
Changed it to 18000rpm but now it won’t start, just pops and gurgles
How do I share the numbers? Do I need to send you the CSV file?
Many thanks
There’s an option to save the config file. Then just post it here…
I downloaded the config file but unfortunately the only option was to save it as a UMDS2 file and I can’t attach it. I also can’t open it to copy and paste it into this message
Yeah, just copy and paste it.
Yeah I can’t as I can’t open the file.
I will try and just type it out later or take some screen grabs
Just open it with Notepad
Thanks Jez, that saved me a lot of typing!
Here is my current configuration:
comboParam$Control Mode$Torque Forward Only (±A)
numericParam$Current Command Offset$-0.15$A/(VDC * PWMdec)
numericParam$Torque-Forward-Only Regen Foldback Start-Below PWM$5$% PWM
numericParam$Smart Reversal Threshold$10$A
numericParam$Smart Reversal Time$10$ms
comboParam$Input Throttle Mode$PWM Throttle on Encoder Line
numericParam$Input Throttle Min$999.375$ms if in PWM
numericParam$Input Throttle Zero Neutral$999.375$ms if in PWM
numericParam$Input Throttle Deadband$49.82185$+/- (ms if in PWM)
numericParam$Input Throttle Max$1995.812$ms if in PWM
numericParam$Input Brake Min$0$
numericParam$Input Brake Max$65535$
numericParam$Throttle Expo$0$%
comboParam$Sensored vs. Sensorless$Sensorless
comboParam$Sensorless Speed-Mode Startup$Ramp Mode
comboParam$Sensorless Torque-Mode Startup$Jitter Start
comboParam$Sensored Mode$3 Hall Sensor
numericParam$Sensored Offset$1$
comboParam$Sensored Hall Code$A (120 deg)
numericParam$Sensored Abs. Encoder Min$0$
numericParam$Sensored Abs. Encoder Max$65535$
numericParam$Sensorless Transition Start$400$RPM
numericParam$Sensorless Transition End$700$RPM
numericParam$Quadrature Cal Current$0$A
numericParam$Pole Pairs$6$Pairs
numericParam$Resistance$20.69458$mOhms
numericParam$Inductance$12.16281$uH
numericParam$KV$0.003458983$Vp/RPM
comboParam$Direction Reverse$No
numericParam$Overvoltage Cutoff$50.4$V
numericParam$Overvoltage Foldback Start$49.4$V
numericParam$Undervoltage Cutoff$38.4$V
numericParam$Undervoltage Foldback Start$40.8$V
numericParam$Max Battery Draw$150$A
numericParam$Max Battery Regen$0$A
numericParam$Max Phase Accel Current A$0$A
numericParam$Max Phase Accel Current B$0$A
numericParam$Max Phase Accel Current MIN$150$A
numericParam$Max Phase Accel Current MAX$150$A
numericParam$Max Phase Accel Available With Throttle$150$A
numericParam$Max Phase Regen Current A$0$A
numericParam$Max Phase Regen Current B$0$A
numericParam$Max Phase Regen Current MIN$10$A
numericParam$Max Phase Regen Current MAX$10$A
numericParam$Max Phase Regen Available With Throttle$10$A
numericParam$ESC Temp Cutoff$65$Deg C
numericParam$ESC Temp Foldback Start$65$Deg C
comboParam$Retransmit Commands via CAN as Primary?$No
comboParam$Disable BTLE$No
numericParam$Forward RPM Foldback Start$18000$RPM
numericParam$Forward RPM Foldback End$18000$RPM
numericParam$Reverse RPM Foldback Start$0$RPM
numericParam$Reverse RPM Foldback End$0$RPM
numericParam$RPM Closed Loop 1$333.3$RPM
numericParam$RPM Closed Loop 2$166.7$RPM
numericParam$Jitter Speed 1$30$RPM
numericParam$Jitter Speed 2$60$RPM
numericParam$Jitter Frequency$10$Hz
numericParam$Jitter Current Multiplier$3$x
numericParam$Jitter Advancement Time$50$ms
numericParam$Ramp Current$50$A
numericParam$Ramp Rate$100$RPM/s
numericParam$DQ Park Filter$0$ms
numericParam$Super-DQ Park Filter$5$ms
numericParam$Q-Current Int A$0$V/(A-s)
numericParam$Q-Current Int B$0$V/(A-s)
numericParam$Q-Current Int MIN$5.937831$V/(A-s)
numericParam$Q-Current Int MAX$5.937831$V/(A-s)
numericParam$Q-Current Proportional$0.08908974$V/A
numericParam$D-Current Int A$0$V/(A-s)
numericParam$D-Current Int B$0$V/(A-s)
numericParam$D-Current Int MIN$5.937831$V/(A-s)
numericParam$D-Current Int MAX$5.937831$V/(A-s)
numericParam$D-Current Proportional$0.08908974$V/A
numericParam$Q-Current Int Startup$5.937831$V/(A-s)
numericParam$Q-Current Proportional Startup$0.08908974$V/(A-s)
numericParam$RPM Deriv Filt$0$ms
numericParam$Super-Diff$0$Vs^3/RPM
numericParam$Forward RPM Command Max$0$RPM
numericParam$Reverse RPM Command Max$0$RPM
numericParam$Slew Up A$0$RPM/s
numericParam$Slew Up B$0$RPM/s
numericParam$Slew Up MIN$0$RPM/s
numericParam$Slew Up MAX$0$RPM/s
numericParam$Slew Down A$0$RPM/s
numericParam$Slew Down B$0$RPM/s
numericParam$Slew Down MIN$0$RPM/s
numericParam$Slew Down MAX$0$RPM/s
numericParam$KP Up A$0$A/RPM
numericParam$KP Up B$0$A/RPM
numericParam$KP Up MIN$0.02$A/RPM
numericParam$KP Up MAX$0.02$A/RPM
numericParam$KP Down A$0$A/RPM
numericParam$KP Down B$0$A/RPM
numericParam$KP Down MIN$0.02$A/RPM
numericParam$KP Down MAX$0.02$A/RPM
numericParam$RPM Integrator$0$A/(RPM-s)
numericParam$RPM Integrator Max$0$A
numericParam$Thrust Drag$0$A/RPM^2
numericParam$Angle P Gain$1$RPM/Deg
numericParam$Angle D Gain$1$RPM-command/RPM
numericParam$Flux VIR HPF$500$ms
numericParam$Flux VIR LPF A$0$ms
numericParam$Flux VIR LPF B$0$ms
numericParam$Flux VIR LPF MIN$10$ms
numericParam$Flux VIR LPF MAX$10$ms
numericParam$Sensorless Angle Filter$4$ms
numericParam$Speed Filter$6$ms
numericParam$Minimum Diff Flux$0.0013765$Delta-Wb
try set this to -2.15
In water the prop will stop much faster as well…
Thanks For looking through the configuration Jez I will try that.
Do you think I need to make any other changes based on the fact that FR told me the motor is limited to 90 amps when using a 12s battery, so 4000W
Such as max batter my draw etc which I think at the moment are set at 150 amps