I have motor driver Jrk 12v3. I have configured it to get input data throught the TTL serial line,
because I need to get actual current throught the motor. I use driver without feedback, also I
set directly the PWM. When I set the PWM so, that digital A-meter displays aprox. 400 mA,
than the driver send value 0x01 to current query. When I set the PWM so, that digital A-meter
displays aprox.1 A, than the driver send value 0x09 to current query. When I set the PWM so,
that digital A-meter displays aprox. 2 A, than the driver send value 0x22 to current query.
I thought, the error is caused by the A-meter, because of non-sinusoidal waveshape of
output current at PWM driver. So I tried to supply the motor from linear DC laboratory power
suply. It displays cca 4,2 V at 2 A of current consumpiton. Then I set the PWM at Jrk 12V3 so,
that mean value was cca 4,2 V. The A-meter displays aprox. 2 A too.
Also, the actual current consunption readed from Jrk 12v3 is very non-linear. Is it OK, or
is it mulfunction? Or I do something wrong?
Thank You for Your reply