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

74 Program features
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Speed control performance figures

The table below shows typical performance figures for speed control.
Speed control
Static accuracy
Dynamic accuracy
Dynamic accuracy
with tuned speed
controller
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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.
Torque control
Non-linearity
Torque step rise time
Performance
20% of motor nominal
slip
< 10% s with 100%
torque step (with
default speed
controller tuning)
< 2% s with 100%
torque step
Performance
± 5% with nominal
torque
(± 20% at the most
demanding operating
point)
< 10 ms with nominal
torque
T
(%)
T
N
T
100
n -n
act ref
n
N
T = rated motor torque
N
n = rated motor speed
N
n = actual speed
act
n = speed reference
ref
T
(%)
T
T
N
ref
100
T
90
10
< 5 ms
T = rated motor torque
N
T = torque reference
ref
T = actual torque
act
load
t (s)
Area < 10% s
act
t (s)