User`s manual

Startup and Tuning
GFK-1742A Appendix D Tuning GE Fanuc Digital and Analog Servo Systems D-7
D
Figure D-2. Velocity Loop Step Response Velocity vs. Time VLGN = 0
Figure D-3. Velocity Loop Step Response Torque Command vs. Time VLGN = 0
Note that in Figures D-2 and D-3 the system does not have enough damping. In this case the
controller does not have the required bandwidth and the Velocity Loop Gain must be increased.