ABB DriveIT ACH550-01 User Manual page 234

Code Description
2304 ACC COMPENSATION
Sets the derivation time for acceleration compensation.
• Adding a derivative of the reference to the output of the speed
controller compensates for inertia during acceleration.
• 2303 DERIVATION TIME describes the principle of derivative
action.
• Rule of thumb: Set this parameter between 50 and 100% of the sum
of the mechanical time constants for the motor and the driven
machine.
• The figure shows the speed responses when a high inertia load is
accelerated along a ramp.
230
No Acceleration Compensation
%
Acceleration Compensation
%
ACH550 User's Manual
Range
0...600.00 s
Speed reference
Actual speed
Parameter listing and descriptions
t
t