EM630/TC6A Closed-Loop Vector Hoist Inverter User Manual Safety Precautions Motor Insulation Inspection Motor insulation inspection shall be performed before it is put to use for the first time, put to use after it is left unused for some time or during routine inspection, in order to avoid damaging the inverter due to Disabled insulation performance of the motor winding. Make sure to disconnect the motor cable from the inverter during inspection; the 500V megohmmeter is recommended. The obtained insulation resistance shall not be lower than 5MΩ.
Motor Thermal Protection If the selected motor does not match with the inverter in rated capacity, especially when the rated power of the motor is lower than that of the inverter, be sure to adjust the motor protection parameters of the inverter or install a thermal relay in front of the motor to protect the motor. Operation Over Industrial Frequency The output frequency of the inverter ranges from 0.00 Hz to 600.00 Hz. To use the inverter at over 50.00 Hz, please consider the bearing capacity of the mechanical device.
Motor Heat and Noise Since the output voltage of the inverter presents a PWM waveform along with some harmonic waves, the temperature rise, noise and vibration of the motor would increase a little in comparison with the running under the industrial frequency. Voltage-Sensitive Device or Power Factor Improvement Capacitor on the Output Side The inverter outputs PWM waves. Do not use the inverter, if a power factor improvement capacitor or a lightning voltage-sensitive resistor on the output side, which may easily result in transient overcurrent of the inverter, or even damage the inverter.
Beyond Rated Voltage Do not use EM630 inverter outside the operating voltage specified in this manual, 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 available in the EM630 to prevent it from induction lighting stroke on a certain degree. Additional protection devices are required in front of the inverter in the places where thunder and lightning are frequently seen. Altitude and Derating When the 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 the PCB may result in explosion and burning plastic parts may generate toxic gas. Please handle them as industrial wastes when the inverter is scrapped. 6