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This PowerPoint presentation explains the differences between different types of servo motor feedback devices, including:

  • The differences between absolute and incremental devices.
  • The differences between analog and digital devices.
  • Typical applications for various devices.
  • How to choose the best feedback device for your specific application.
  • How the devices affect servo system performance.
Device Safe Hiperface Encoder EN 13849-1 EN 62061 PFHD (1/h) TM (years) MTTFD (years)
Safe HIPERFACE Encoder SKS36S/SKM36S PLd, Kat.3 SIL CL2 1.3E-08 20 847

How to Read the Raw Data of a Multi-turn Encoder when using the AKD Drive’s Primary Feedback X10

Parameter FB1.P allows the user to read the position of the primary feedback device connected to X10. The position can be read as counts or in custom units. This is the raw position read back from the device. When FB1.PUNIT = 0 the output format is 32:32, the upper 32 bits represent the multi-turns and the lower 32 bits represent the position of the feedback. 

An example of how to read the feedback data:

If you suspect that you're experiencing EMC issues, this is a method used to identify intermittent communication failures on Hiperface DSL®.

Step 1 - Enable the Counter

The first thing to do is to enable logging certain events within the Workbench terminal.

DRV.MEMADDR DSL.EnableDslFaultCounter

Step 2 - Run the Script

Paste the following into a Workbench Macro and run it.

In order to support linear motors the following linear feedback devices have been tested with our drives:

Valid for S300, S400, S600, S700

Valid for S300, S400, S600, S700