Positioning and speed control with HTL encoders

Proceed as follows:

  • Start up the drive train with HTL encoders.
  • Optimize the drive train:
    • Determine the load moment of inertia
    • Stiffness of the control system
    • Zero clearance
  • Insert the MOVIKIT® "Positioning Drive" software module.
  • Assign the inputs as follows:
    • DI04: HTL signal - track A
    • DI05: HTL signal - track B
    • DI06: HTL signal - track C (optional)
Restrictions for the EI7C encoder:

Only simple positioning tasks can be implemented in combination with the MOVIKIT® Positioning Drive software module and the EI7C encoder. The achievable accuracy is 1/4 motor revolutions.

Due to the low encoder resolution, observe the following:

  • Speed control is not possible.
  • Position control is not possible at speed 0. Ensure that at speed 0, or when the "in position" signal is set, the inverter is inhibited and the brake (if present) is applied. Check whether the "Apply brake when target position reached" function is activated under the drive function FCB 09 Position control. This setting blocks the output stage when the target position is reached and allows the brake to be applied (if present).
  • SEW‑EURODRIVE recommends setting the lag range accordingly large and setting the control to soft.