ABB ACS880-17 - Page 241

Parameters 241
Normal Medium setting. 1
Tight Fast response. May produce too high a gain value for some
applications.
2
25.37 Mechanical time
constant
Mechanical time constant of the drive and the machinery as
determined by the speed controller autotune function. The
value can be adjusted manually.
-
0.00 … 1000.00 s Mechanical time constant. 10 = 1 s
25.38 Autotune torque
step
Defines an added torque value used by the autotune function.
This value is scaled to motor nominal torque.
Note that the torque used by the autotune function can also be
limited by the torque limits (in parameter group 30 Limits) and
nominal motor torque.
10.00%
0.00 … 100.00% Autotune torque step. 100 = 1%
25.39 Autotune speed
step
Defines a speed value added to the initial speed for the
autotune routine. The initial speed (speed used when
autotune is activated) plus the value of this parameter is the
calculated maximum speed used by the autotune routine. The
maximum speed can also be limited by the speed limits (in
parameter group 30 Limits) and nominal motor speed.
The value is scaled to motor nominal speed.
Note: The motor will exceed the calculated maximum speed
slightly at the end of each acceleration stage.
10.00%
0.00 … 100.00% Autotune speed step. 100 = 1%
25.40 Autotune repeat
times
Determines how many acceleration/deceleration cycles are
performed during the autotune routine. Increasing the value
will improve the accuracy of the autotune function, and allow
the use of smaller torque or speed step values.
10
1…10 Number of cycles during autotune routine. 1 = 1
25.41 Torque reference
Autotune2
Reserved. -
25.42 Integral term enable Selects a source that enables/disables the integral (I) part of
the speed controller.
0 = I-part disabled
1 = I-part enabled
Selected
Not selected 0. 0
Selected 1. 1
DI1 Digital input DI1 (10.02 DI delayed status, bit 0). 2
DI2 Digital input DI2 (10.02 DI delayed status, bit 1). 3
DI3 Digital input DI3 (10.02 DI delayed status, bit 2). 4
DI4 Digital input DI4 (10.02 DI delayed status, bit 3). 5
DI5 Digital input DI5 (10.02 DI delayed status, bit 4). 6
DI6 Digital input DI6 (10.02 DI delayed status, bit 5). 7
DIO1 Digital input/output DIO1 (11.02 DIO delayed status, bit 0). 10
DIO2 Digital input/output DIO2 (11.02 DIO delayed status, bit 1). 11
Other [bit] Source selection (see Terms and abbreviations on page 114). -
No. Name/Value Description Def
/FbEq16