User’s Guide for EM760 series high-performance vector inverter 3. Before wiring, make sure that the power supply is OFF (zero energy). Do not carry out wiring when the controller is powered on; otherwise, electric shock may be caused! 4. Never connect the input power supply to the output terminals (U, V, W) of the inverter. Pay attention to the marks of wiring terminals, and connect wires correctly! Otherwise, the inverter may be damaged and even a fire may be caused! 5. Ground the controller correctly and reliably as required; otherwise, electric shock may be caused! 1. Connect the output terminals (U, V, W) of the inverter to corresponding input terminals (U, V, W) of the motor.
An inconsistent phase sequence will cause the motor to reverse. 2. Make sure that the lines meet the EMC requirements and local safety standards. For wire diameters, refer to the recommendations. Otherwise, an accident may occur! 3. Never connect the braking resistor directly between the DC bus and the terminal; otherwise the inverter may be damaged and a fire may be caused! 4. Use a screwdriver with the specified torque to tighten main circuit terminals; otherwise, a fire may occur! 5. Never connect the phase-shifting capacitor and LC/RC noise filter to the output circuit. 6. Do not connect the electromagnetic switch and electromagnetic contactor to the output circuit.
Otherwise, the overcurrent protection circuit of the inverter will be enabled, and internal damage of the inverter may be incurred in severe cases. 7. Do not dismantle the connecting cable inside the inverter; otherwise, internal damage may be caused to the inverter. Before power-on: Warning Danger 1. Check whether the supply voltage is consistent with the rated voltage of the inverter; otherwise, equipment damage or fire may be incurred. 2. Check whether wiring of power input terminals (R, S and T) and output terminals (U, V and W) is connected correctly; 3.
Check whether there is a short circuit among the peripheral circuits connected to the inverter and whether all connected lines are tightened; otherwise, the inverter may be damaged! 1. The inverter must not be powered on until it is properly covered; otherwise, electric shock may be caused! 2. The wiring of all peripheral accessories must be in line with the instructions in this manual. All wires should be connected correctly according to the circuit connections in this manual. Otherwise, an accident may occur! Warning After power-on: 1. Never touch the inverter and surrounding circuits; otherwise, electric shock may occur! 2.
If the indicator does not turn on or the keyboard does not display after electrification, immediately turn off the power switch; 10 minutes later, check if the wiring is connected properly. Do not touch the inverter terminals R, S and T and any power terminal by hand or with a screwdriver; otherwise, electric shock may occur! After eliminating the causes of wiring errors, contact our customer service personnel immediately. 3. Never touch any wiring terminals of the inverter after electrification; otherwise, electric shock may occur! 4. Do not disassemble any parts of the inverter while it is powered on. Danger 1.
If parameter identification is required, please pay attention to the danger of injury caused by the rotating motor. Check the safety before parameter identification; otherwise, an accident may be caused! 2. Do not change the parameters set by the inverter manufacturer without permission; otherwise, the inverter may be damaged! Warning During maintenance: Danger 4