ABB +N5600 Firmware Instructions page 491

No. Name/Value
97.10 Signal injection
Disabled
Enabled (5 %)
Enabled (10 %)
Enabled (15 %)
Enabled (20 %)
97.11 TR tuning
25...400%
97.12 IR comp step-up
frequency
0.0 ... 50.0 Hz
Description
Enables signal injection.: A high-frequency alternating signal
is injected to the motor in the low speed region to improve the
stability of torque control. Signal injection can be enabled with
different amplitude levels.
Notes:
• This is an expert level parameter and should not be
adjusted without appropriate skill.
• Use as low a level as possible that gives satisfactory
performance.
• Signal injection cannot be applied to asynchronous
motors.
Signal injection disabled.
Signal injection enabled with an amplitude level of 5%.
Signal injection enabled with an amplitude level of 10%.
Signal injection enabled with an amplitude level of 15%.
Signal injection enabled with an amplitude level of 20%.
Rotor time constant tuning.
This parameter can be used to improve torque accuracy in
closed-loop control of an induction motor. Normally, the motor
identification run provides sufficient torque accuracy, but
manual fine-tuning can be applied in exceptionally
demanding applications to achieve optimal performance.
Note: This is an expert level parameter and should not be
adjusted without appropriate skill.
Rotor time constant tuning.
IR compensation (ie. output voltage boost) can be used in
step-up applications to compensate for resistive losses in the
step-up transformer, cabling and motor. As voltage cannot be
fed through a step-up transformer at 0 Hz, a specific type of
IR compensation should be used.
This parameter adds a frequency breakpoint for parameter
97.13 IR compensation
U / U
N
(%)
Relative output voltage with IR
compensation
100%
97.13
97.12 Field weakening
0.0 Hz = Breakpoint disabled.
IR compensation breakpoint for step-up applications.
as shown below.
point
Parameters 491
Def/FbEq16
Disabled
0
1
2
3
4
100%
1 = 1%
0.0 Hz
f (Hz)
1 = 1 Hz