The meaning of the inching of Schneider inverter

The inch movement in Schneider inverter means that the control signal can drive the motor intermittently according to the certain rules, and the motor acts in strict accordance with the dynamic and stop instructions of the control signal, and the motor does not roll by inertia during the shutdown. It's like moving an inch and then stopping.

Schneider inverter, the full name of "Schneider communication inverter governor", is a well-known inverter brand developed, produced and sold by Schneider Electric Group in France. It is mainly used to control and regulate the speed of three-phase AC asynchronous motors, and occupies an important position in the inverter market with its stable performance, rich combination functions, good dynamic characteristics, super overload capacity and incomparable flexibility. It is widely used in various industrial fields, especially in elevators, textiles, machine tools, lifting and transportation, and ports.

The meaning of the inching of Schneider inverter

The meaning of the inching of Schneider inverter

issue

1. Overcurrent

Overcurrent problems can be divided into acceleration, deceleration, and constant overcurrent. It may be caused by the short acceleration and deceleration time of the inverter, the sudden change of load, uneven load distribution, and short circuit of output. In this case, it is common to extend the acceleration and deceleration time, reduce the sudden change of load, add energy consumption brake elements, carry out load distribution planning, and view the line. If the load inverter is still overcurrent, it means that the inverter circuit of the inverter has been looped and the inverter needs to be replaced.

2. Overload

Overload problems include frequency conversion overload and motor overload. It may be caused by the acceleration time being too short, the grid voltage being too low, and the load being too heavy. Generally, it can be extended to speed up the time, extend the braking time, check the grid voltage, etc. The load is too heavy, and the selected motor and inverter cannot drag the load, or it may be caused by poor mechanical smoothness. If the former is necessary, it is necessary to replace high-power motors and inverters; In the case of the latter, the production machinery needs to be overhauled.

maintenance

1. When planning, installing and using the inverter, it is necessary to follow the guidance of the inverter operation manual;

2. The electrical planners and on-site electrical commissioning personnel can improve the inverter reference on this basis.

(1) Schneider inverter should be an earlier brand to enter the Chinese market, so some old products like Schneider inverter, Schneider inverter still has a lot of users in use, let's first analyze the common problems of these two series of products.

(2) Schneider inverter our most common problem is that there is no appearance when energized, the switching power supply of this series of inverter uses a UC2842 chip as a waveform generator, the damage of the chip will cause the switching power supply to not work, so that it can not be displayed normally, in addition, the working power supply of the chip is not normal, which will also make the switching power supply unable to work normally.

(3) Schneider inverter our more common problems are mainly the damage of the drive circuit, as well as the damage of the IGBT module, the drive circuit is driven by a pair of tubes to drive the IGBT module, and this pair of tubes is also the simplest damage components, the cause of damage is often because of the damage of the IGBT module, resulting in high voltage and high current into the drive circuit, resulting in damage to the components of the drive circuit.

(4) Schneider inverter, we often encounter the problem phenomenon of F008 (low DC voltage), because it is directly through the resistance step-down to obtain the sampling signal, so the appearance of the fault F008 is mainly caused by the damage of the sampling resistor.

(5) Schneider inverter F025, F026, F027, about the alarm of the missing input phase, the reason for the problem is that the 6SE70 series itself has the function of input phase detection, and the damage of the input detection circuit will lead to the input phase loss alarm.

The meaning of the inching of Schneider inverter

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