ABB ACS880 - Page 406

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
406 Parameters