ABB ACS880 - Page 361

Def / Type
FbEq 16b / 32b
DescriptionName / Range /
Selection
No.
100 % / uint16Defines the motor load curve together with parameters
35.52 Zero speed load and 35.53 Break point. The load
curve is used by the motor thermal protection model to
estimate the motor temperature.
When the parameter is set to 100%, the maximum load is
taken as the value of parameter 99.6 Motor nominal current
(higher loads heat up the motor). The load curve level
should be adjusted if the ambient temperature differs from
the nominal value set in 35.50 Motor ambient temperature.
I = Motor current
I
N
= Nominal motor current
Drive output
frequency
I/I
N
(%)
150
100
50
35.52
35.53
35.51
Motor load curve35.51
1 = 1 % / 1 = 1 %Maximum load for the motor load curve.50...150 %
70 % / uint16Defines the motor load curve together with parameters
35.51 Motor load curve and 35.53 Break point. Defines the
maximum motor load at zero speed of the load curve. A
higher value can be used if the motor has an external motor
fan to boost the cooling. See the motor manufacturer's
recommendations.
See parameter 35.51 Motor load curve.
Zero speed load35.52
1 = 1 % / 1 = 1 %Zero speed load for the motor load curve.25...150 %
45.00 Hz / uint16Defines the motor load curve together with parameters
35.51 Motor load curve and 35.52 Zero speed load. Defines
the break point frequency of the load curve i.e. the point
at which the motor load curve begins to decrease from the
value of parameter 35.51 Motor load curve towards the
value of parameter 35.52 Zero speed load.
See parameter 35.51 Motor load curve.
Break point35.53
- / -Break point for the motor load curve. For scaling, see
parameter 46.2.
1.00 ... 500.00 Hz
Parameters 361