9474 motor control

[Jo_1]

Hi together,

i´m new here in LABview forum.

I got the following problem.

I got a EC-motor, which were controlled by PWM- signal.

base:

The interface of the motor has a "high"- Signal the whole time on it´s control- input, which is ok, because i want to interrupt it (PWM from 0-100%) with my NI card.

I can generate the PWM- signal by NI cDAQ-9174 with NI9474 digital module from 0-100% if it´s not connected with the control-input of the interface, but í´m worry when i connect it, because then i got the whole time a "High- signal" and can´t steer this motor

I already checked my wirements, but they are ok (same GND a.s.o)

Thanks and the best regards

Jo

[Naity]

hi Jo,

How do you manage to determine that your duty cycle is correct when the motor control is not connected but incorrect when the control is wired?

Best regards