Taida Inverter Maintenance Motor Measures
We all know that the inverter adjusts the voltage and frequency of the output power supply by the internal IGBT breaking, and supplies the required power supply voltage according to the actual needs of the motor, so as to achieve the purpose of energy saving and speed regulation. What are the ways and measures for the inverter to maintain the motor? Let's take a look at Delta Inverter.
1. Overvoltage maintenance The output of the inverter has voltage detection function. The inverter can actively adjust the output voltage so that the motor does not withstand overvoltage and the motor runs within the set voltage range.
2. Undervoltage maintenance When the voltage of the motor is lower than 90% of the normal voltage (some settings are 85%), the inverter maintenance stops.
3. Overcurrent maintenance When the current of the motor exceeds 150%/3 seconds of the rated value, or 200%/10 microseconds of the rated current, the inverter is stopped to maintain the motor.
4, lack of phase maintenance monitoring output voltage, when the output phase loss, the inverter alarm, the inverter immediately stops to maintain the motor.
5, Inverting maintenance The inverter can be set so that the motor can only rotate in one direction, and the direction of rotation cannot be set. Unless the user changes the phase sequence of the motor A, B, C wiring, there is no inversion. Possible.
6. Overload maintenance The inverter monitors the motor current. When the motor current exceeds 120%/1 minute of the set rated current, the inverter is stopped to maintain the motor.
7. The grounding maintenance inverter is equipped with a special grounding maintenance circuit, which is generally composed of a grounding maintenance transformer and a relay. When one or two phases are grounded, the inverter immediately stops. Of course, if the user asks, we can also design the grounding and immediately stop the maintenance.
8. Short-circuit maintenance After the output of the inverter is short-circuited, it will cause over-current. The inverter will stop the motor to maintain the motor within 10 microseconds.
9. Overclocking maintenance The inverter has larger and smaller frequency limiting functions, so that the output frequency can only be within the specified range, thus completing the overclocking maintenance function.
10, stall maintenance Stall maintenance is generally for synchronous motors. For asynchronous motors, the stall in the acceleration process must be an overcurrent, and the inverter performs this maintenance function after overcurrent and overload maintenance. The stall during deceleration can be avoided by setting a safe deceleration time during commissioning.