Slip compensation, dynamic torque vector control, sensorless vector control, and vector control with
speed sensor used motor constants. Consequently, the following conditions should be satisfied;
otherwise, full control performance may not be obtained.
• A single motor should be controlled per inverter.
• Motor parameters P02, P03, P06 to P13 should be properly configured or auto-tuning should be
performed.
• The capacity of the motor to be controlled should be within the capacity two ranks lower than the
inverter capacity under dynamic torque vector control, and the same as the inverter capacity under
speed sensorless vector control/vector control with speed sensor. The standard applicable motor
capacity differs depending on whether inverter is the HHD or HND specification. Otherwise, the inverter
may not control the motor due to decrease of the current detection resolution.
• The wiring distance between the inverter and motor should be 50 m (164 ft) or less. If it is longer, the
inverter may not control the motor due to leakage current flowing through stray capacitance to the
ground or between wires. Especially, small capacity inverters whose rated current is also small may
be unable to control the motor correctly even if the wiring is less than 50 m (164 ft). In that case, make
the wiring length as short as possible or use a wire with small stray capacitance (e.g., loosely-bundled
cable) to minimize the stray capacitance.
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