Lenze L-force HighLine C 8400 Series Reference Manual page 242

8400 HighLine C | Reference manual
Motor control (MCTRL)
Servo control (SC)
Additional limitation of the I component of the speed controller when the voltage limit is
reached (anti-wind-up)
In dynamic acceleration processes in the field weakening range, the acceleration torque is
limited due to the limitation of the maximum output voltage of the inverter. Acceleration
ramps that are set too high (C00012) may lead to undesired charging of the integrator of
the speed controller, which result in very strong overshoots of the actual speed value when
the setpoint is reached.
The so-called anti-wind-up function serves to intelligently limit the integrator part in
dynamic acceleration processes in the field weakening range so that an overshoot of the
actual speed value can be prevented when the setpoint speed is reached.
This function is deactivated in the Lenze setting because the robustness of the drive may
decrease in the field weakening range. Possible consequences are slight speed variations.
If required by the application, the function can be activated via C00079/3.
Parameter
C00079/3
Anti-wind-up" off (without limitation):
n [rpm]
Speed setpoint
Actual speed value
[5-20] Typical signal characteristics for switched-on/off anti-wind-up function

Tip!
Lenze recommends to activate the additional limitation of the speed controller's I
component on reaching the voltage limit
processes in the field weakening range are wanted.
The function should be deactivated again if slight speed variations occur in the
field weakening range.
242
Buy: www.ValinOnline.com | Phone 844-385-3099 | Email: CustomerService@valin.com
Info
SC: n-Ctrl Anti-Wind-Up
Œ

t
L
Anti-wind-up" on (with limitation):
n [rpm] Œ

(C00079 = 1) if dynamic acceleration
Firmware ≤ 11.00 - DMS 6.0 EN - 10/2011
Lenze setting
0: Off
t