sanyc Posted April 20, 2021 Report Share Posted April 20, 2021 Hi, I am using several 0808THS cards and on one of them I have both blocks 1 & 2 set to PWM. So output O0, O1, O4 and O5 are normal PWM outputs. O1 & O2 are working great, f = 3 kHz Duty Cycle at 50 the control is very smooth. On O4 & O5 with the same settings the motors are spasmodic in starting and stopping. (I mean too fast motor operation). Why on the first set of outputs the Duty Cycle at 50 is so smooth (slow motor speed) and on the second set the same Duty Cycle does not work out the same? Anyone faced a similar problem? thanks Quote Link to comment Share on other sites More sharing options...
MVP 2021 kratmel Posted April 21, 2021 MVP 2021 Report Share Posted April 21, 2021 I do not know why this happend, but i think - this module used only two hardware high speed channel - pwm, pto output or counter, encoder input can be selected. Then only one of function can be used for one channel. You test it on hardware. Two channel=two PWM. Your topic about Stepper - Encoder input has the same issue. Quote Link to comment Share on other sites More sharing options...
sanyc Posted April 21, 2021 Author Report Share Posted April 21, 2021 Halving the frequency for the second block solves the issue Quote Link to comment Share on other sites More sharing options...
MVP 2021 kratmel Posted April 21, 2021 MVP 2021 Report Share Posted April 21, 2021 Good to know... Can you post working configuration? Maybe someone can say something about.... Quote Link to comment Share on other sites More sharing options...
yamid pineda Posted June 5, 2021 Report Share Posted June 5, 2021 Hello, I am currently working with the 0808ths module configuring block 1 as pwm, however I have had problems generating the pulse train, soon you could share the program, it would be very helpful Thank you Quote Link to comment Share on other sites More sharing options...
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