Jump to content

0808THS PWM Output


Recommended Posts



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?


Link to comment
Share on other sites

  • MVP 2023

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.



Link to comment
Share on other sites

  • 1 month later...

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Create New...