Invert DC Motor Direction

[adistr]

Hi,
How I Invert DC Motor Direction (the DC motor connect via fan pin).
I mean - how I do this in the config file and not via the changing between he electric cables.

Thanks,
Adi

[jens55]

@adistr, I hope you are not suggesting to do this to an actual fan ....
Unless I am way off base, you can't do this for a reversible DC motor on the fan pin anyway. The positive end is always a set voltage and the Duet switches the negative line to ground on or off. There is no way to reverse the voltage.

[adistr]

@jens55 Hi thank you.
I want to predefined the motor cycle side and not change it due the running.
If it possible (and I guess that most an option) how can I define it in the config file?

Thank you,
Adi

[jens55]

@adistr, I am sorry, I have no clue what you were just trying to say ....

[rjenkinsgb]

@adistr said in Invert DC Motor Direction:

I want to predefined the motor cycle side and not change it due the running.
If it possible (and I guess that most an option) how can I define it in the config file?

You cannot "reverse" a fan output, the hardware does not exist.

The only way to control a motor direction would be by using a relay, with that controlled by a different output from the Duet.

The relay would need to have the contacts wired as two pole changeover, to swap the motor connections over, with motor power from a fan connector.

[adistr]

@rjenkinsgb
Great, thank you very much!