1. Recording of operation data and shortcomings: The operation data of Delta's inverter and motor should be recorded every day, including the output frequency, output current, output voltage, DC voltage inside the inverter, radiator temperature and other parameters, and compare them with reasonable data to facilitate early detection of shortcomings and dangers. If the inverter trips, it is necessary to record the defect code and the working condition of the inverter when tripping, so as to analyze the cause of the defect in detail.
2. Routine inspection of Delta inverters: Conduct inspections every two weeks to check the output three-phase voltage of the inverters in the recorded operation, and pay attention to the balance between them; Check the three-phase output current of the inverter and pay attention to the balance between them; Check and record the ambient temperature and radiator temperature; Investigate whether the inverter has abnormal vibration, movement and static, and whether the fan is operating normally.
3. Delta's inverter maintenance: Each inverter should be cleaned and maintained once a quarter. Maintenance should remove the dust and dirt inside the inverter and in the air path, and wipe the surface of the inverter clean; The surface of the inverter should be kept clean and bright; During maintenance, the inverter should be carefully inspected to investigate whether there is a heating and discoloration part in the inverter, whether there is cracking in the cement resistance, whether the electrolytic capacitor has swelling and leakage explosion-proof holes, whether the PCB board is abnormal, and whether there is a hot and yellow part. After the maintenance is completed, the parameters and wiring of the inverter should be restored, and the power should be sent, and the motor should be operated at a low frequency of 3Hz for about 1 minute to ensure the normal operation of the inverter.
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1. Armature loop string resistance
The applied resistor is connected to the armature circuit.
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Synchronous control parameter setting method for two or more inverters - Delta
Step 1
Two inverters, two wires, and one power supply.
Step 2
The inverter wiring defines the two inverters as a master and a slave respectively, the host port 485A is connected to the slave port 485A, and the host port 485B is connected to the slave port 485B.
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1. The environmental requirements of the inverter
Ambient temperature - 10 °C - 40 °C;
Ambient humidity: The relative humidity does not exceed 90% (no condensation);
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