ABB ACS880 Firmware Manual page 406

406 Parameters
No. Name / Range /
Selection
35.51 Motor load curve
50...150 %
35.52 Zero speed load
25...150 %
35.53 Break point
1.00 ... 500.00 Hz
Description
Defines the motor load curve together with parameters
35.52 Zero speed 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
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
ambient temperature.
I/I
N
(%)
I = Motor current
I
N
150
100
50
35.52
35.53
Maximum load for the motor load curve.
Defines the motor load curve together with parameters
35.51 Motor load curve
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
Zero speed load for the motor load curve.
Defines the motor load curve together with parameters
35.51 Motor load curve
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
curve towards the value of parameter
load.
See parameter 35.51 Motor load
Break point for the motor load curve. For scaling, see
parameter 46.2.
and 35.53 Break point. The load
99.6 Motor nominal
35.50 Motor
= Nominal motor current
35.51
and 35.53 Break point. Defines
curve.
and 35.52 Zero speed
35.51 Motor load
35.52 Zero speed
curve.
Def / Type
FbEq 16b / 32b
100 % / uint16
Drive output
frequency
1 = 1 % / 1 = 1 %
70 % / uint16
1 = 1 % / 1 = 1 %
45.00 Hz / uint16
load.
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