What fault does the ENC inverter show E002?

The inverter slows down the operation of the overcurrent. Possible causes: The deceleration time is too short; The load inertia of the inverter is large, and a braking resistance needs to be added; The power of the inverter is smaller.

The rectified DC voltage of the rectifier contains a pulsating voltage that is 6 times the frequency of the power supply, and the pulsating current generated by the inverter also causes the DC voltage to fluctuate.

In order to suppress voltage fluctuations, inductors and capacitors are used to absorb the pulsating voltage. If the capacity of the device is small, if there is a margin between the power supply and the main circuit components, a simple flat-wave circuit can be used without inductance.

Extended information: Based on the premise of the overall generation effect of the three-phase waveform, the three-phase modulated waveform is generated at one time for the purpose of approximating the ideal circular rotating magnetic field trajectory of the motor air gap, and is controlled by the way of inscribed polygon approximation to the circle.

After practical use, it has been improved, that is, the introduction of frequency compensation, which can eliminate the error of speed control; The flux amplitude is estimated through feedback, and the influence of stator resistance at low speed is eliminated. The output voltage and current are closed to improve the accuracy and stability of the dynamics. However, there are many links in the control circuit, and no torque adjustment is introduced, so the system performance has not been fundamentally improved.

Easy inverter fault **002 should be one, overload fault, directly press the fault reset button to deal with the fault, in the start, if this fault is also reported, it is necessary to check the load.

Inverter ** fault E012 is a phase loss fault on the input side, please check whether the input power supply and input wiring are normal.

F0012 indicates that the temperature signal of the inverter is lost, and the motor temperature sensor or cable may be in an open circuit or short circuit state, and the fault point can be determined by the elimination method.

1.A multimeter can be used to detect cable on/off.

2.If conditions permit, the inverter can be switched to other identical equipment to determine whether the inverter is good or bad.

3.Most of the hardware problems of the inverter, F0012 is the temperature sensor disconnection, if it is really disconnected, the inverter should be reported when it is powered on. When the fan is started to run for 5-6 minutes, F0012 is reported, which means that it is not a real disconnection, but a 'temperature sensor circuit disconnection' that occurs after the internal temperature of the inverter rises, which may be caused by thermal expansion and cold contraction, such as solder joint virtual welding, pin virtual connection, plug oxidation, etc.

4.The quality of the sensor itself is a problem, and the circuit is broken after being heated. This problem is relatively easy to judge, and you can know if it is a problem by trying a different temperature sensor.

Main reasons and solutions:

1) If the input voltage is abnormal, check the input power supply.

2) If the acceleration time is set too short, extend the acceleration time appropriately.

3) Restart the rotating motor and set it to decelerate and restart the function.

4) If the load is abrupt or abnormal during operation, check the load or reduce the load for abrupt changes.

Summary. What fault does the ENC inverter show E002? Inverter E002 is a deceleration overcurrent fault.

Its overcurrent protection functions mostly include: short-circuit fault (some models are light and heavy); acceleration and deceleration overcurrent; Constant speed overcurrent and other three categories. 1. When starting, it will trip as soon as the speed rises, which is a very serious phenomenon of overcurrent, mainly checked:

Whether the working machinery is stuck; Whether there is a short circuit on the load side, check whether there is a short circuit to the ground with a megohmmeter; Whether the power module of the inverter is damaged; The starting torque of the motor is too small, and the drag system cannot rotate. 2. If it does not trip immediately when starting, but trips during operation, the main check: the speed rise time is set too short, and the acceleration time is extended; If the deceleration time is set too short, the deceleration time will be extended; The torque compensation (U-F ratio) is set too much, resulting in excessive overload current at low frequencies

The electronic thermal relay is set improperly, and the action current is set too small, which causes the inverter to malfunction.

What fault does the ENC inverter show E002? Inverter E002 is a deceleration overcurrent fault. Its overcurrent protection functions mostly include:

Short-circuit fault (some models are light and heavy); acceleration and deceleration overcurrent; Constant speed overcurrent and other three categories. 1. When starting, it will trip as soon as the speed rises, which is a very serious phenomenon of overcurrent, mainly checking: whether the working machinery is stuck; Whether there is a short circuit on the slippery side of the load, check whether there is a short circuit to the ground with a megohmmeter; Whether the power module of the inverter is damaged; The starting torque of the motor is too small, and the drag system cannot rotate.

2. If it does not trip immediately when starting, but trips during operation, the main check: the speed rise time is set too short, and the acceleration time is extended; The deceleration time is set too short, and the deceleration is lengthened to make the spike time slippery; The torque compensation (U f ratio) is set too much, resulting in excessive load current at low frequency: the electronic thermal relay is set improperly, and the action current is set too small, which causes the inverter to malfunction.

What does it mean when e002 appears in the meter.

The meter appears e002 is the early loss of the code, the meter shows 02 is an error in the meter**, it may be caused by the abnormal meter, in order to avoid the subsequent impact on your electricity consumption and billing, please reflect to the owner of the meter in time. Which one: The occurrence of e1 means that the remaining power is zero, and the meter will stop working at this time

The occurrence of E3 indicates overload tripping, and the third empty dress can be restored by inserting the card: the occurrence of E4 single-phase meter indicates that the cover is tripped, the test card is restored (special for anti-theft meter), and the three-phase meter indicates the lack of phase.

Hello dear, glad to answer for you. The E002 is one of the drive faults** and usually represents an overcurrent fault. Specifically, E002 failures are usually caused by:

Short circuit of the motor or load: When a short circuit occurs in the motor or load, it causes a sudden increase in current, which triggers the protection function of the inverter. Inverter internal faults:

When the internal components of the inverter are damaged or faulty, the current increases abnormally, resulting in overcurrent faults. Overload work: If the inverter runs under overload for a long time, it will cause an overcurrent fault.

Unstable power supply: If the power supply received by the inverter is unstable, such as large voltage fluctuations or input power interference, etc., resulting in overcurrent faults. For E002 faults, the following measures can be taken:

First of all, eliminate the cause of the load such as short circuit and overload, check whether there is a problem with the motor and load, and repair or replace it in time. Check whether the components and circuits in the inverter are normal, such as IGBT modules, capacitors, resistors, etc., and replace and repair them in time if necessary. If the inverter is in an overload state, it needs to be solved by adjusting the load or reducing the chain and reducing the operating frequency.

Check whether the power supply is stable, and take corresponding measures, such as adding power filters, setting voltage regulators, etc. The above is my reply, I hope it can help you, thank you for your consultation! Please comment on my service if you have time.