Yuanxin Electric YX2000, User Manual

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YX3000 Senseless Vector Type Inverter Manual
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If the motor rating does not match that of the inverter, especially when the rated power of the
inverter is higher than that of the motor, adjust motor protection parameters in the inverter or
install thermal relay to protect motor.
1.2.3 Operating with the Frequency Higher than Grid Power Frequency
Output frequency of YX3000 is 0.00Hz
～
500Hz. If YX3000 is required to operate above
50.00Hz, please take the endurance of mechanical devices into consideration.
1.2.4 Mechanical Vibrations
Inverter may encounter mechanical resonance point of the load device at certain output
frequencies which can be avoided by setting the skip frequency parameters of the inverter.
1.2.5 Motor Heat and Noise
Since output voltage of inverter is PWM wave and contains a certain amount of harmonics,
so that the temperature, noise and vibration of the motor will be higher than those when the
inverter runs at grid power frequency.
1.2.6 Voltage-sensitive device or capacitor on output side of the AC drive
Do not install the capacitor for improving power factor or lightning protection
voltage-sensitive resistor on the output side of the AC drive because the output of the AC
drive is PWM wave. Otherwise, the AC drive may suffer transient overcurrent or even be
damaged.
1.2.7 Contactor at the I/O terminal of the AC drive
When a contactor is installed between the input side of the AC drive and the power supply,
the AC drive must not be started or stopped by switching the contactor on or off. If the AC
drive has to be operated by the contactor, ensure that the time interval between switching is
at least one hour since frequent charge and discharge will shorten the service life of the
capacitor inside the AC drive.
When a contactor is installed between the output side of the AC drive and the motor, do not