A90 series Inverter User Guide Attentions Motor Insulation Inspection Motor insulation inspection shall be performed before using a motor for the first time or left unused for some time or during routine inspection, in order to avoid damaging inverter due to failure of insulation performance of motor winding. Make sure to disconnect motor cable from inverter during inspection; 500V megohmmeter is recommended. The obtained insulation resistance from test shall not be lower than 5MΩ.
Motor Thermal Protection If the selected motor does not match with inverter in rated capacity, especially when its rated power is lower than that of inverter, be sure to adjust motor protection parameters of inverter or install a thermal relay in front of the motor to protect the motor. Operation at Power frequency Output frequency of inverter ranges from 0.00 Hz to 600.00 Hz. To use inverter at over 50.00 Hz, please consider the bearing capacity of mechanical device.
Motor Heat and Noise Since output voltage of inverter presents a PWM waveform along with some harmonic waves, the temperature rise, noise and vibration of motor would increase a little in comparison with the running under power frequency. Varistor or Power Factor Improvement Capacitor on Inverter Output Inverter outputs PWM wave. Do not use inverter, if a power factor improvement capacitor or a lightning varistor is on output side, which may easily result in transient overcurrent of inverter, or even damage inverter. Beyond Rated Voltage Do not use A90 inverter beyond the operating voltage range specified in this guide, which may easily damage its internal parts.
If you have to do so, install a voltage rise or reduction device for transformation. Surge Protection A surge protection device is installed in inverter to prevent it from induction lightning stroke on a certain degree. Additional protection devices are required in front of inverter in the places where thunder and lightning occur frequently. Altitude and Derating When inverter is used in an area at an altitude of over 1,000m, the cooling effect will degrade, so it must be derated. For details, please consult SINEE. Attentions at Inverter Scrapping Burning the electrolytic capacitors of the mains and PCB may result in explosion and burning plastic parts may generate toxic gas.
Please handle them as industrial wastes when inverter is scrapped. The scope of use of this product This product is not designed and manufactured for use in equipment or systems used in the event of a life hazard. Do not use this equipment. This product is manufactured under strict quality management, but it is necessary to configure the safety device when it is used for equipment that causes a major accident or loss due to a malfunction. Anti-shock Please carefully read the safety precautions in the requirements!
Cut off the main circuit power supply, confirm the keypad display interface extinguished at least 10 minutes before the implementation of the inverter maintenance and repair, or residual capacitor on the capacitor will cause harm! 5