How to identify overload conditions in crane frequency converters

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During the use of cranes, it is inevitable that the frequency converter may experience overload; this situation leads to frequent tripping of the frequency converter, thereby affecting the normal operation of the crane. There are now many ways to detect overload in frequency converters, and the editors at China Crane Network will introduce them to you below! 1. Check whether the motor of the crane is overheating; if not, verify whether the preset value of the electronic thermal protection function of the inverter is appropriate ； If the motor reaches high temperatures, a major reason for this is that the load on the motor is too high, which in turn causes the crane’s frequency converter to become overloaded. 2. Check whether the three-phase voltages at the output terminals of the motor and the inverter are balanced. If they are balanced, it is likely that there is a poor connection in the wiring between the inverter and the motor, which can lead to overload of the inverter. If the voltages are unbalanced, it may indicate a problem inside the inverter, and this too can cause overload of the inverter.