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8 PARAMETER FUNCTIONS
8-67
8
8.8 Control Parameters
Do not change the settings of these parameters since they have been factory-set to the optimum
values.
When changing their settings, you need to set 801 in Pr. 77.
<Control parameters>
Initial value
Pr. 733 "motor protection electronic overcurrent protection value" 100
Pr. Setting Range Unit Operation
733 0.0 to 200.0 %
You can change the operation reference torque of motor overheat
protection.
CAUTION
Do not use Pr. 733 at more than the initial value 100.
If you use it by force-cooling the motor, consult the factory before using it.
Initial value
Pr. 728 "low speed region acceleration time" 5
Pr. Setting Range Unit Operation
728 0.00 to 15.00 s
The maximum value of acceleration time in less than the speed
control range (less than 100r/min) is specified. The reference
speed for acceleration time is the rated speed 2000r/min.
CAUTION
Do not use Pr. 728 at more than the initial value 5.
Doing so may not provide the starting torque 150%.
Initial value
Pr. 713 "speed response time" 10
Pr. 714 "speed response adjustment" 100
Pr. Setting Range Unit Operation
713 2 to 30
714 20.0 to 300.0 %
Both parameters can make speed response faster as the setting
is increased.
CAUTION
Increasing the Pr. 713 and Pr. 714 values can make speed response faster, but use them at
their initial values since vibration may occur depending on the load conditions.
If vibration has occurred, decrease the Pr. 714 value.