Hello,

We recently bought a P&P machine (VP-2800HP-CL64-4R), and for some time we are trying to get the PCB alignment to work properly.
The PCB is aligned using 3 fiducials on the origin, mark1 and mark2, as explained in the manual. This way a small rotation of the PCB should be compensated by the software.
However, this is not the case. When we align the PCB, the offset of the actual positions of the fiducial (and other components) remain.

To test if the software does anything with the mark points, we exaggerated the rotation (within the limits of the software) and performed an alignment. This test showed that the position of the mark points have no influence on the correction. Components are placed with a huge offset in this test case. In other words, the mark points don't do anything. Nothing is corrected.

We believe that this might be a software issue.

In the settings the mark point detection is on, and the mark points are detected prior to component placement.
We have used several versions of the vision placer, but this problem remains.

We are out of options, except for making sure there is absolutely no rotation of the PCB when placed in the machine.

I there another solution for this problem?

Best regards,
John

Hi Michael,

Thank you for your reply.
I believe your description of setting up the mark points is exactly what we did. But maybe we're missing something here, doing something wrong.

Regarding your questions 1-5: Yes, we checked this and it's ok.
We also added deviation for the head we used during the tests. This gave better results for some components (all resistors), but worse for others.
The deviation gets worse as the camera approaches mark point 2. We also checked the x and y axis movement with a ruler. This was also ok. No deviation there.

We will do a test again today, using your exact description as stated above. We designed a special test pcb for this.
When this still doesn't work, a web meeting would be very nice :-)

Best regards,
John

Yes, we followed this setup description for brightness and contrast settings. We did not do the HD camera upgrade steps.

Yes we did step 1 to 6 during the set up of the machine. I just checked the camera settings and they are still according to the steps on the website. Nothing changed there.
I also sent you an email.