Hall sensor detection failed with torque HUBS

ESK8 Electronics
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1

Hi, so I’ve got the torque hub 130KV and a VESC using the BLDC tool. Before I built the housing I connected the motor to the VESC ran the BLDC tool and could just hit “start detection” and I would have my sensors detected. Now I built the housing and it doesnt work anymore, it always responses

Hall sensor detection failed: -1, 2, 4, 4, 1, 1, 5, -1

I measured all 3 cables and have the rectangular signal like I know it. I also checked the connection on the board, all cables have connection. I’m really confused and dont understand that at all. Do I have to make some settings in VESC before I start the detection? It isnt the battery voltage, max input is set to 53V (12S setup), cutoff start to 45,6 and minimum at 8V.

Anyone has a clue?

2

Did you select FOC on the Motor tab and Sensored or Hybrid on the FOC tab?

3

I selected BLDC on as Motor Type and did nothing on the FOC tab. I selected sensored on BLDC tab.

4

Try setting it to FOC on th emotor tab and Sensored or Hybrid on the FOC tab and reattempt the detection.

5

Motor Type was set to FOC. in BLDC tab was the Sensor Mode set to Hybrid and in FOC tab the Sensor Mode to Hall, still just a failed detection

6

Oh I just realized now you wanted me to measure the Hall Sensors in the FOC tab. There it just popped a green message “Hall Result Received” and there are now 8 parameters. I dont know tho whether that was succesful or not?

foc_detection
foc_detection1280×1024 213 KB
This is how it looks like

7

IIRC bvedder said the hall sensor detection code in BLDC mode is very basic. He put a lot more into hall detection in FOC.

8

Hello, I connect the new BLDC motor and sk8 and try to detect the parameters in vesc tool, but detection is failed. Reason: Sensor detection failed. Can anybody help me?

Sensor%20Failed
Sensor%20Failed1777×1050 131 KB

9

I’ve had that problem many times with the newest VESC tool. One reason could be your battery charger level. Sometimes s low battery will cause a failed detection. Also, are you running 83mm wheels?

If it’s but the battery it wheels, try another firmware to isolate the issue to the VESC tool or motors.

https:///how-to-ackmaniac-esc-tool/

10

Hello mmaner, I was tried measure the motor resistance and inductance in FOC Settings with your tool, but detection mesure is bad (Could not measure the motor resistance and inductance). I have the Turnigy D5035-125KV Sensored Brushless Motor from hobbyking and 4 Li-ion Panasonic NCR18650B for testing. (https://hobbyking.com/en_us/dt6376-14p-sensored-motor-125kv.html) Can you advise please?

1 Like
11

1st, it’s not my tool. It’s built and maintained by @Ackmaniac, I just wrote a how-to (tutorial) about it.

2nd, I’ve never used those motors so Im not sure how I can help. Are you getting a successful BLDC detection? Post some screen shots of the ESC-Tool, that will help a lot.

12

For what it’s worth, you should probably just return those motors and get the 70kv version. I also had issues with these hubs, same sensor issue you had, as well as efficiency so poor you could actually only scrape 10 miles out of a 10s4p 25r pack. Additionally, when at a standstill, pulling with more than ~30% throttle would make the hubs chatter endlessly

On the other hand… They are A LOT of fun. The unwieldiness makes it interesting lol. I hit my top speed of 40mph with those, but I cant recommend it :stuck_out_tongue_closed_eyes: