Parameter listing and descriptions
247
ACH550-01 User's Manual
3007
MOT LOAD CURVE
50…150%
Sets the maximum allowable operating load of the motor.
• With the default value 100%, motor overload protection is functioning
when the constant current exceeds 127% of the parameter 9906
MOTOR
NOM
CURR
value.
• The default overloadability is at the same level as what motor
manufacturers typically allow below 30 °C (86 °F) ambient
temperature and below 1000 m (3300 ft) altitude. When the ambient
temperature exceeds 30 °C (86 °F) or the installation altitude is over
1000 m (3300 ft), decrease the parameter 3007 value according to
the motor manufacturer’s recommendation.
Example
: If the constant protection level needs to be 115% of the motor
nominal current, set parameter 3007 value to 91%
(= 115/127*100%).
3008
ZERO SPEED LOAD
25…150%
Sets the maximum allowable current at zero speed.
• Value is relative to 9906
MOTOR
NOM
CURR
.
3009
BREAK POINT FREQ
1…250 Hz
Sets the break point frequency for the motor load curve.
Example:
Thermal protection trip times when parameters 3006
MOT
THERM
TIME
, 3007
MOT
LOAD
CURVE
and 3008
ZERO
SPEED
LOAD
have
default values.
Code Description
Range
Frequency
Output current relative
to 9906
MOTOR
NOM
CURR
150
100 =
50
P 3007
P 3008
P 3009
127%
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