Inverter maintenance mantra method - Schneider

Create Date: 2024-8-30 12:03:23|Source: Schneider/Schneider

Don't worry about the damage of the frequency conversion, disassemble the machine after the discharge;

It is indispensable to ask for a diagnosis and clarify the problem at the beginning of the test;

Input and output PN junction, three-phase balance and then unshelling;

Look at the nameplate before powering on, the wrong voltage will blow up;

The bus is safe without electricity, and the rectifier filter is wrong for pressure sensitivity;

There is no electricity on the bus, and the switching power supply goes to make up for the lesson.

It appears that the motherboard is messy and dismantled, and eighty percent of the program has to be rewritten;

Showing normal error reporting, problem code check manual;

Undervoltage and overvoltage are the most common, and resistance sampling and op amp calculations;

The current transformer is prone to error;

The overheating error is unstable, and the fan does not turn thermal disconnecting;

The main control chip has many functions, and it is the expansion of detection;

Run without reporting an error when powering on, two methods to test the machine;

The panel controls the adjustment parameters, and the terminal controls the signal;

The overcurrent in operation is very simple, and the driving circuit should be looked at first.

Module damage is also common. If the motor is going to shake,

The three-phase voltage is unbalanced, and the optocoupler or capacitance should be checked.

Lack of phase is generally checked on the periphery, broken wire or bad touch;

Parameter reset must be cautious, on-site backup to two people,

There are many other problems, and you can't go wrong by looking at the map.

Inverter maintenance mantra method - Schneider

Inverter maintenance mantra method - Schneider

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