ABB ACS 6000 - Page 60

Chapter 13 - Speed Controller Tuning
ABB
60 (of 62) 3BHS135824 ZAB E01Rev. D ACS 6000 Commissioning Manual
Required response time
Step
height
A
Error
Time
B C D E
Figure 13-1 Step Response of Speed Control
A = undercompensated, too short intergration time and low proportional
gain
B = undercompensated, too low proportional gain
C = normal
D = norma, when better dynamic performance is needed
E = overcompensated, short intergration time and high proportional gain