1.4 Cautions in utilization Frequency inverter is designed to be permit to run under industrial surrounding with electromagnetic interference. Usually, if install quality is good, it ensures frequency inverter safe run without fault. Pls install according to below rules to ensure reliable run and avoid the impact of electromagnetic interference. ● Ensure all equipments connected to frequency inverter are connected to star earth or common earth bus by short and thick cable as well as frequency inverter. Motor earthing should be as close as possible. Do not connect motor cruster to earth terminal of frequency inverter or protection earth of control system.
● Conductor should be flat/ multi cores what has lower impedance at high frequency. ● Cut cable neatly to ensure unshield cable as short as possible. ● Control wire should be away from the supply cable and motor cable as far as possible and use independent wire slot. While it must across to the supply cable and motor cable, should be 90є vertical acorss. ●Ensure that the contactor in the cabinet has wave surge suppresser.Or‘R-C’damping circuit is connected to the winding of AC contactor. Voltage dependent resistor corresponding to the winding voltage is used.
And freewheel diode or components such as voltage dependent resistor corresponding to the winding voltage are connected to DC contactor. It is very important while contactor, controlled by output relay of inverter, acts frequently. ● Cable connected to motor should be shielded cable or armoured cable. The two barriers are earthed reliably by cable grounding card. ● Build noise filter at the input side to reduce electromagnetic interference from other equipments at the power grid side. The noise filter should be as close to the inverter power input terminal as possible. Meantime, the filter must earth reliably as the inverter.
● Build noise filter at the output side to reduce radio interference and inductive disturbance. The noise filter must be as close to the inverter output terminal as possible.
Meantime, the filter must 5 Display Setting Function number/data Running Output frequency, give frequency, output current, input voltage, output voltage, motor speed, PID feedback, quantitative PID, module temperature, input and output terminal Fault Overvoltage, undervoltage, overcurrent, short circuit, phase missing, overload, heat, pressure stall, current limiting, data protection is damaged, current fault operating conditions, historical fault Condition Installation sites Indoor, elevation of not more than 1000 m, no corrosive gases Temperature, humidity -10—+40℃, 20%—90%RH(No condensation) Vibration Below 20Hz less than 0.5g Storage Temperature -25—+65℃ Installation mode Wall-mounted mode Protection degree IP20 Cooling Mode Forced air-cooling