Rockwell Automation Publication 2198-UM004A-EN-P - October 2019 485
Appendix D
Full Closed Loop Control
The full closed-loop control can be useful when some level of compliance exists
due to mechanical coupling between the motor and the load (like gear
transmission or belt transmission). Due to the gear backlash or belt slip of
mechanical transmission, it may cause the bigger position error/offset between
the motor and the load if only the encoder of the motor end is used (even if the
motor has high precision and fast response time).
The full closed-loop control function acts to reduce the position error/offset and
improve the positioning accuracy.
Figure 224 - Wiring Diagram
Topic Page
Full Closed-loop Control 486
IMPORTANT This function applies to PT: Position mode (terminal block input) and IO gear
mode.
Drive
Encoder
U
V
W
Motor Coupling
Mechanism
Main
Shaft
Encoder
MFB
AUX
Encoder (A, B, Z) Signals