Hope Sunland inverter fault code

The types of production machinery are complex, the functional and process requirements are different, and the torque characteristics are also different, therefore, before the application of the inverter, the first thing is to understand the nature of the load carried by the motor, that is, the load characteristics, and then select the inverter and the motor. There are three types of loads: ...

1. Make proper grounding After a detailed investigation of the site, we can see that the grounding situation on the site is not very ambitious. The correct grounding can not only be useful for the system to press the external disturbance, but also to reduce the disturbance of the equipment itself to the outside world, which is the most useful for dealing with the disturbance of the inverter.

(1) Brake usage rate ED% Brake usage rate ED%, that is, the brake usage rate in the clarification book ED%. The brake utilization rate ED% is said to be the deceleration time T1 divided by the deceleration cycle T2, and the brake utilization rate is mainly to allow the braking unit and the brake resistance to have sufficient time to dissipate ...

(1) The harmonic current generated will directly cause the additional heating of the motor, so that the stator of the motor surpasses the additional temperature rise of the motor itself, so that the additional output capacity of the motor will be greatly reduced. (2) The current output of the inverter ...

The direct torque control (DTC) function of the inverter is another high-performance communication frequency conversion speed regulation system developed after vector control. In the mid-80s of the 20th century, the German scholar Depenbrock proposed the theory of direct torque control in 1985, and his idea was to combine the electric motor and the inverter.

1. Due to the large moment of inertia of the air compressor, the capacity of the inverter should be determined according to the specific working conditions and the operating current of the site. 2. The pressure sensor should be in the pressure change is not relative...

1. Please explain the maintenance function of the inverter? (1) After detecting the abnormal situation, the correction action will be carried out automatically, such as overcurrent loss rate prevention, regeneration overvoltage stall prevention. (2) After detecting the abnormality, the PWM control signal of the power semiconductor device is closed, so that the motor can park automatically. As...

For the dual requirements of anti-interference and galvanic isolation, the pre-circuit of the output current detection or voltage detection of the inverter usually uses the "matching" circuit of the linear optocoupler device and the differential amplifier to complete the transmission mission of the detection signal. The circuit of the differential amplifier is based on the current detection circuit ...

In the 90s of the 20th century, PLC has formed a variety of PLCs: micro, small, medium, large and giant. According to the number of I/O points, it can be divided into five types: micro PLC (32 I/O), small PLC (256 I/O), medium PLC (1024 I/O), large PLC (4.69 I/O), and giant PLC (8195 I/O). ...

What is an inverter power supply? A variable frequency power supply converts the alternating current from the main power supply from AC→DC→AC to a pure sine wave. The output frequency and voltage can be adjusted within a specific range. Unlike the inverter governor used for the speed control of electric motors, it is also different from the general AC power supply. Aspiring AC ...

1) Operating temperature: The inverter is a high-power electronic component, which is simply affected by the operating temperature, and the general temperature requirement is 0 - 55. However, in order to ensure the safety and reliability of the operation, it is necessary to consider freeing up space when using, and it is best to control it below 40. The inverter generally requires the device to operate ...

The method of judging the damage of a power element in the rectifier part is to manipulate the single conductivity of the rectifier element, and the positive and negative resistance values should not be consistent when the static value is general, and the specific method is as follows: The three-phase bridge rectifier of the rectifier part may be two...

Planning specifications: The planning of inverter cabinets should conform to relevant national norms and industry norms, such as GB/T15576-2018 "Low-voltage Distribution Cabinet", GB7251.1-2017 "Low-voltage Complete Switchgear and Control Equipment", etc. Material specifications: The materials of the control cabinet should conform to the relevant codes and regulations.

In the process of operation, try to ensure that the inverter (hereinafter referred to as -VFD) has a satisfactory acceleration and deceleration time, and the VFD has its own soft start function when starting or accelerating; When the power is shut down or the speed is slowed down, it has the function of soft shutdown. Add acceleration and deceleration times as much as possible within the range promised by the device. When the device requires ...

1. The power-on trip or the main power terminal part of the inverter shows a spark. Detection method and discrimination: disconnect the power line, check whether the input terminal of the inverter is short-circuited, and check whether the DC side terminals P and N of the central circuit of the inverter are short-circuited. It may be due to a damaged rectifier or a central ...

Assuming that the inverter has a built-in braking unit and additional braking resistors, it is important to pay attention to the correct wiring of the braking resistors. The braking resistor should be connected between the P terminal and the DB terminal, but not between the P terminal and the N terminal, otherwise the three-phase rectifier bridge will operate at full load when it is not working, resulting in the equipment being unable to ...

Inverters often encounter a variety of problems during commissioning and use, during which overvoltage is the most common. After the overvoltage occurs, in order to avoid damage to the internal circuit, the overvoltage protection function of the inverter will work, so that the inverter will operate intermittently, resulting in the equipment can not be ...

1: In the operation of the motor, if dust, water stains and other debris enter its interior, it will constitute a short-circuit medium, which can damage the wire insulation layer, form an inter-turn short circuit, increase the current, increase the temperature and incinerate the motor. Therefore, dust, water stains and other debris should be prevented from entering the motor.

November 24, 2015 - November 26, 2015, "Germany Nuremberg Industrial Automation Exhibition" was successfully carried out at the Nuremberg International Exhibition Center in Germany, and it is expected that Sunland as a domestic professional inverter manufacturer also participated in the exhibition, in this exhibition, in addition to the usual SB70, ...