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From what can protect the Mitsubishi inverter starting

The inverter is widely used in various industries, is mainly due to the application of the energy saving and variable frequency speed regulating function in equipment and operating system, then the frequency converter is to the area from which to protect the motor from? Below we will analyze the problem answer.
The protection of the inverter motor mainly have the following several aspects: over voltage protection, under voltage protection, over current protection, open phase protection, overload protection, phase reversal protection, ground protection, short circuit protection, OC protection and stall protection. The following simple introduces the protection mode of these a few kinds of inverter for motor.
1 overvoltage protection:
The inverter output voltage detection function, can automatically adjust the output voltage of the inverter, so that the motor does not bear the overvoltage. Even in the 110% output voltage regulation failure and output voltage exceeds the normal voltage, frequency converter will be through the stop to protect an electric motor.
2 under voltage protection:
When the motor voltage is lower than the normal voltage 90%, inverter protection shutdown.
3 over current protection:
When the motor current exceeds the rated value for 150%/3 seconds, or the rated current of the inverter through 200%/10 microsecond, stop to protect motor.
The 4 phase protection:
Monitor the output voltage, when the output phase loss, inverter alarm, after a period of time by stopping to protect the motor frequency converter.
The 5 phase reversal protection:
Inverter motor can rotate along one direction, unable to set the direction of rotation, unless the user changes the motor A, B, C phase sequence, otherwise there is no RP may.
The 6 overload protection:
Frequency converter monitoring motor current, when the motor current exceeds a rated current of 120%/1 minutes, shutdown to protect the motor through the inverter.
The 7 grounding protection:
The frequency converter is equipped with special grounding protection circuit, generally by the grounding protection of transformer and relay, when one phase or two-phase grounding alarm, inverter. Of course, if the user requirement, we can also design for the ground immediately after the protection shutdown.
8 short circuit protection:
The inverter output circuit, must cause the flow, in 10 microseconds stop to protect the motor through the inverter.
9 OC protection:
The inverter has a maximum and minimum frequency limit function, to make the output frequency can only be within the scope of the provisions, thereby realizing overclocking protection function.
The 10 stall protection:
General stall protection for synchronous motor. For the asynchronous motor, accelerated the process of stall inevitably displays for over current, frequency converter by overcurrent and overload protection to implement this protection function. The slowdown in the process of stall can be avoided by deceleration time setting safety during debugging.

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