7.4.4 Bad or varying position accuracy
Error description
The position accuracy is bad or varying.
Probable causes
There can be several causes why the position accuracy is bad or varying. To check
all the possible causes the following must be verified.
• Verify that the Counts Per Meter calibration is accurate. Verify several times.
Include verification in scheduled maintenance.
• Avoid drive shaft encoders, since belt slippage between roller and belt can
vary.
• Check the camera calibration. Poor quality of calibration grid will give
inaccurate calibration result.
• Check if there are differences between calibration paper height and product
height.
• Check if there are parallax errors when identifying high products.
• Make sure that the camera is not mounted on robot frame because this can
cause camera vibrations.
430 Application manual - PickMaster® Twin - PowerPac
3HAC064218-001 Revision: B
© Copyright 2021 ABB. All rights reserved.
7 Troubleshooting
7.4.4 Bad or varying position accuracy
To Next Page
Loading...
Need help?
General
