ABB ACSM1 Manual page 194

194
45.06 MOT LOAD CURVE
Defines the load curve together with parameters
POINT.
The value is given in percent of nominal motor current. When the parameter is set to 100%, the
maximum load is equal to the value of the parameter
up the motor). The load curve level should be adjusted if the ambient temperature differs from the
nominal value.
45.07
The load curve is used by the motor thermal protection model when parameter
SOURCE
50...150%
45.07 ZERO SPEED LOAD
Defines the load curve together with parameters
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.
The value is given in percent of nominal motor current.
The load curve is used by the motor thermal protection model when parameter
SOURCE
50...150%
45.08 BREAK POINT
Defines the load curve together with parameters
LOAD. Defines the break point frequency of the load curve, ie, the point at which the motor load curve
begins to decrease from the value of parameter
45.07 ZERO SPEED
The load curve is used by the motor thermal protection model when parameter
SOURCE
0.01...500 Hz
Parameters and firmware blocks
I/I
N
(%)
150
100
50
45.08
is set to (0) ESTIMATED.
is set to (0) ESTIMATED.
LOAD.
is set to (0) ESTIMATED.
FW block: MOT THERM PROT
45.07 ZERO SPEED LOAD
99.06 MOT NOM CURRENT
I = Motor current
I = Nominal motor current
N
45.06
Motor current above breakpoint.
FW block: MOT THERM PROT
45.06 MOT LOAD CURVE
Motor current at zero speed.
FW block: MOT THERM PROT
45.06 MOT LOAD CURVE
45.06 MOT LOAD CURVE
Load curve breakpoint.
(see above)
and
Drive output frequency
45.02 MOT TEMP
(see above)
and 45.08 BREAK
45.02 MOT TEMP
(see above)
and 45.07 ZERO SPEED
to the value of parameter
45.02 MOT TEMP
45.08 BREAK
(higher loads heat