EM600 High-Performance Vector Control Inverter User Manual Attentions 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 inverter due to disabled insulation performance of motor winding. Make sure to disconnect motor cable from inverter during inspection; 500V megohmmeter is recommended. Obtained insulation resistance shall not be lower than 5MΩ.
Motor Thermal Protection If a selected motor does not match with inverter in rated capacity, especially when rated power of motor is lower than that of inverter, be sure to adjust motor protection parameters of inverter or install a thermal relay in front of motor to protect it. Operation Over Grid 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 Output voltage of inverter presents a PWM waveform along with some harmonic waves, so motor temperature rise, noise and vibration would increase a little in comparison with running under grid 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 EM600 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 EM600 to prevent it from induction lighting stroke on a certain degree.
Additional protection devices are required at the front end of inverter in the places where thunder and lightning are frequently seen. Altitude and Derating When inverter is used in an area at an altitude of over 1,000 m, the cooling effect will degrade, so it must be derated. For details, please consult SINEE. Attentions at Inverter Scrapping Burning electrolytic capacitors of 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. 5