ABB ACS880 Firmware Manual page 540

540 Parameters
No. Name / Range /
Selection
-30000.00 ...
30000.00
79.22 Underload curve
point 2
-30000.00 ...
30000.00
79.23 Underload curve
point 3
-30000.00 ...
30000.00
79.24 Underload curve
point 4
-30000.00 ...
30000.00
79.25 Underload curve
point 5
-30000.00 ...
30000.00
79.28 Underload curve
scale coef
-30.000 ... 30.000
79.29 Underload curve
offset
-30000.00 ...
30000.00
79.31 Recovery speed
boost
0.00 ... 1200.00%
79.32 Recovery speed drop
ref
0.00 ... 598.00 Hz
79.33 Recovery cycle time
0.0 ... 30000.0 s
Description
Underload curve point 1.
Defines underload curve point 2 load limit active at
corresponding speed set in parameter
speed point 2.
Underload curve point 2.
Defines underload curve point 3 load limit active at
corresponding speed set in parameter
speed point 3.
Underload curve point 3.
Defines underload curve point 4 load limit active at
corresponding speed set in parameter
speed point 4.
Underload curve point 4.
Defines underload curve point 5 load limit active at
corresponding speed set in parameter
speed point 5.
Underload curve point 5.
Defines multiplier coefficient applied to the underload
limit calculated out of the underload curve.
Underload curve scale coef.
Defines offset additive value applied to the underload
limit calculated out of the underload curve.
Underload curve offset.
Defines speed reference change in percent relative to
the production speed used at the moment when
underload condition was detected.
The new calculated speed is then used in course of the
underload recovery routine as first step in response to
the underload condition. If the value is set to 0, the
speed boost step is skipped from recovery routine.
Recovery speed boost.
Defines absolute speed reference used in course of the
underload recovery routine as a second step after
recovery speed boost.
If the value is set to 0, the speed drop step is skipped
from recovery routine.
Recovery speed drop reference.
Defines time for a single recovery routine step.
The recovery speed reference change will be active for
the period of time set in this parameter.
Recovery cycle time in seconds.
Def / Type
FbEq 16b / 32b
10 = 1 / 100 = 1
0.00 / real32
79.02 Load curve
10 = 1 / 100 = 1
0.00 / real32
79.03 Load curve
10 = 1 / 100 = 1
0.00 / real32
79.04 Load curve
10 = 1 / 100 = 1
0.00 / real32
79.05 Load curve
10 = 1 / 100 = 1
1.000 / real32
10 = 1 / 1000 = 1
0.00 / real32
10 = 1 / 100 = 1
10.00% / real32
10 = 1% / 100 = 1%
25.00 Hz / real32
10 = 1 Hz / 100 = 1 Hz
60.0 s / real32
10 = 1 s / 10 = 1 s