ABB ACQ580 - Speed Control Performance Figures; Torque Control Performance Figures

74 Program features
 Speed control performance figures
The table below shows typical performance figures for speed control.
 Torque control performance figures
The drive can perform precise torque control in vector control mode without any
speed feedback from the motor shaft. The table below shows typical performance
figures for vector control.
100
t (s)
T
T
N
(%)
T
load
n
act
-n
ref
n
N
Area < 10% s
T
N
= rated motor torque
n
N
= rated motor speed
n
act
= actual speed
n
ref
= speed reference
Speed control Performance
Static accuracy 20% of motor nominal
slip
Dynamic accuracy < 10% s with 100%
torque step (with
default speed
controller tuning)
Dynamic accuracy
with tuned speed
controller
< 2% s with 100%
torque step
t (s)
T
N
= rated motor torque
T
ref
= torque reference
T
act
= actual torque
Torque control Performance
Non-linearity ± 5% with nominal
torque
(± 20% at the most
demanding operating
point)
Torque step rise time < 10 ms with nominal
torque
100
< 5 ms
90
10
T
ref
T
act
T
T
N
(%)