•
In the manual torque boost function, set the output voltage and output frequency characteristics of
the inverter.
•
The automatic torque boost function automatically adds the output voltage and output frequency to
the characteristics set in the manual torque boost function.
•
Adjust the manual torque boost function when the automatic boost function is disabled or if the motor
stalls at low speeds.
•
Set the 1st/2nd Manual Torque Boost Frequency (A043/A243) to the rotation speed that provides the
required output torque.
While observing the movement of the load, gradually increase the 1st/2nd Manual Torque Boost Volt-
age (A042/A242) value so that the motor speed does not decrease.
Check the output current of the inverter and adjust it to 150% of the rated current of the motor or less.
•
Set A042/A242 as 100% of the 1st/2nd Motor Rated Voltage Selection (A082/A282) value.
•
Set A043/A243 as 100% of the 1st/2nd Base Frequency (A003/A203) value.
•
Setting the Manual Torque Boost Voltage data too high may cause motor overexcitation. An overex-
cited motor is inefficient, and causes overload or overcurrent conditions easily.
Output voltage [%]
100
A042/A242
A043/A243
Base Frequency
(100%)
Output frequency
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