Unable to arm hobbywing Xrotor ESC without PWM wire plugged on the servo rail

ArduCopter Copter 4.5
1

Hello,
I am working on a build using Hobbywing Xmotor ESC with DroneCAN protocol. Everything is running fine when i plug both the CAN wire and the PWM wire on the pixhawk. Although, when I try to arm the ESC without the PWM plugged in at the beginning it doesn´t work at all. Is there any way I can bypass the use of the PWM wire and only utilize the CAN one?

2

Which Hobbywing Xmotor ESC model exactly?
Which FW version on the ESC?
Which FW version on the flight controller?

3

I used the xrotor pro-h130a-14s-bldc-rtf-hw-v2 Hobbywing ESC;
Tried 4.5.7 and 4.6.0 beta of arduplane already but nothing happened.
I couldn’t record the version of the ESC firmware since I used the DroneCan GUI tool.

4

Did you step through these instructions, what were the result at each stage?
https://ardupilot.org/copter/docs/common-hobbywing-dronecan-esc.html

Using the CAN1 interface?

You may need to connect the ground wire from the ESC PWM connector to the flight controller CAN ground (or the servo ground).

5

Are you powering the esc and pixhawk from the same source ?

6

I followed the instructions, but they didn’t explain how to bypass the ESC’s PWM for full CAN throttle. My build works with the PWM connected to the servo rail, and surprisingly, it continues to work after unplugging it. However, if I start without the PWM connected, the motor won’t arm.

I am really stuck here. Have already tried everything y’all suggested.

Is there any other parameters list (on mission planner), script, wiring or anything you could help me with?

7

Is there a signal Ground connection when using CAN ?