ABB ACS880 Firmware Manual page 325

No. Name / Range /
Selection
Normal speed
control
P-control
24.43 Speed error window
high
0.00 ... 3000.00 rpm
24.44 Speed error window
low
0.00 ... 3000.00 rpm
24.46 Speed error step
-3000.00 ... 3000.00
rpm
Description
All three terms (parameters 25.2,
observed by the speed controller.
Only the proportional term (25.2) is observed by the
speed controller. The integral and derivative terms are
internally forced to zero.
Defines the upper boundary of the speed error window.
See parameter 24.41 Speed error window control
enable.
Upper boundary of speed error window. For scaling,
see parameter 46.1.
Defines the lower boundary of the speed error window.
See parameter 24.41 Speed error window control
enable.
Lower boundary of speed error window. For scaling,
see parameter 46.1.
Defines an additional speed error step given to the
input of the speed controller (and added to the speed
error value). This can be used in large drive systems for
dynamic speed normalizing.
WARNING!
Make sure the error step value is removed when
a stop command is given.
Speed error step. For scaling, see parameter 46.1.
Parameters 325
25.3 and 25.4) are
Def / Type
FbEq 16b / 32b
0
1
0.00 rpm / real32
- / -
0.00 rpm / real32
- / -
0.00 rpm / real32
- / -