The difference between a voltage converter and a current converter
For example, the operating principle of voltage inverter is mainly to regulate the voltage source, and the voltage source regulates the current to achieve the effect of conditioning, while the current inverter directly regulates the current to achieve the effect of conditioning.
Which one is better? In fact, both have advantages, you can choose according to your own needs, and generally choose more voltage conditioners, because the use conditions of current conditioners are more stringent, and the use of too large current or too small current at once is not good for the line.
What should be paid attention to when using motor inverter?
For the sake of convenience, some people plug in one inverter directly to another machine without shutting down after the end of use, which will damage the inverter. Therefore, after using the inverter, the inverter should be stopped first, let the inverter rest for a few minutes, and then restart the inverter, so that the inverter can be used for a long time.
And the inverter should be grounded, if it is not grounded, the current of the inverter may overflow to the machine, and the operator may be electrocuted when touching.
All in all, there are two points to pay attention to when using the motor inverter, the grounding treatment of the inverter and the inverter can not be directly used on another machine without shutting down, in addition to these two points, there are other places that need to be paid attention to, such as the hands of personnel should be dry and can not be plugged in when wet.
|
More on that
|
Inverter interference solution - Sunland inverter
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.
|
|
Sunland inverter soft start advantages
Sunland inverter and soft start is a first-class, reliable and reliable motor control system, which is able to meet the needs of various applications. The advantages of expected Sunland inverters and soft start are:
1. Performance: Expect Sunland inverter and soft start...
|
|
The change of frequency conversion control mode - Senlan
In the process of practical speed regulation, a general frequency-adjustable communication power supply can not meet the requirements of speed regulation and control of asynchronous motors, and must also take into account the problems of using the magnetic field of the motor, pressing the starting current and obtaining the desired torque characteristics, such as low-frequency torque characteristics.
|
|
The harm of low temperature to the inverter - Senlan
Most VFDs are suitable for -10°C-50°C, and if the temperature is too low, the VFD will be affected.
Precautions for low-temperature operation of VFD:
1. VFD should be operated in an environment above minus 10°C as much as possible, preferably indoors.
|
|
The sequence of inverter commissioning steps - Sunland inverter
Investigation of the function of the inverter system
Before debugging the inverter, it is necessary to carefully read the instruction manual and related information of the inverter to be debugged to understand the use environment and precautions. Especially before the inverter is energized, it is necessary to carefully investigate and check whether the inverter has obvious problems.
|
|
It is hoped that Senlan will become the most powerful shore power solution provider in China
Founded in 1998, Hope Lansen is a national high-tech enterprise in the fields of energy conservation and environmental protection, new energy, transmission control and intelligent equipment in China, integrating R&D, manufacturing, system integration and customer service. Its products cover high and low voltage frequency conversion control systems, automated production lines and robot transmission systems.
|
|
Senlan inverter selection points
1. Select the inverter according to the load characteristics, such as the load is constant torque load, you can choose Siemens MM440 inverter, ABB ACS800 series inverter, etc.; If the load is a fan or pump load, you can choose Siemens MM430 inverter, ABB ACS510 series inverter, etc.
2、 ...
|
|
Misunderstanding of the use of inverter - Senlan inverter
Poor choice
This should be the situation that friends have encountered the most in the Z, the situation of large horse-drawn carts and small horse-drawn carts is everywhere. The big horse-drawn trolley is not bad, at least there is no big problem in use, the most investment has been added, and the equipment can still operate normally; But the small horse-drawn cart ...
|
|
Sunland inverter control panel button function
1. The "FUNC/DATA" key is a programming key, press this button once to convert the operation mode, and press it again to read and write the function code;
2. The "SET/>>" button is the display switch and shift key, press this key to switch the display content, and press it again to ...
|
|
Hope Sunland grid-connected PV inverter
Grid-connected photovoltaic inverter is one of the core components of solar photovoltaic power generation system, the main types are: central inverter, modular inverter, micro inverter, DC ...
|
|
Motor starting mode - Senlan inverter
The inverter is a motor control (speed regulation) device that uses the on-off effect of power semiconductor devices to convert the power frequency power supply to another frequency.
Composition 1:
1. Rectifier unit: convert the communication electricity with fixed operating frequency into DC ...
|
|
Quickly determine whether the inverter used is suitable - Sunland inverter
First of all, we need to understand a truth, that is, many times the good and bad of things are relative. The variable frequency drive (VFD) is used as a power source to drive the operation of the motor, and its fundamental role is to regulate the speed. If the wiring is normal, the parameters are reasonable, and the load is not ...
|
|
Senlan inverter motor failure analysis
1. The motor slows down too slowly
1) If the deceleration time is set too long, reduce the deceleration time
2) Install a braking resistor
3) Add DC braking
2. The motor is overheated
1) The load is too large, and the practical moment has exceeded the ...
|
|
Introduction to the speed regulation mode of inverter motor - Senlan
1. Mechanical speed regulation form
There are three methods of mechanical speed regulation: electromagnetic clutch, hydraulic coupling, and viscous clutch. Among them, the hydraulic coupling device is widely used, that is, a hydraulic coupling device is connected in series between the motor and the load, and the concave and convex liquid level is used to adjust the hydraulic coupling between the motor and the load.
|
|
Common maintenance methods of inverter - Senlan inverter
1. Step-by-step decreasing method
The so-called gradual reduction method is to gradually reduce the scale of the problem through the analysis of the problem phenomenon and the identification of measurement parameters, and finally implement it to the specific circuit or component that causes the problem. In essence, it is a certainty, a negation, a negation, a negation, a final ...
|
|
Practical installation precautions for frequency converters
When the line power supply exceeds the driver's kV-A rating by 10 times, add a line reactor.
A 3% impedance line reactor should be used to reduce power line transient voltages caused by capacitor switching, line notching, DC bus overvoltage tripping, and inverter overcurrent and overvoltage conditions. Line...
|
|
Inverter control scheme for fan and water pump - Senlan inverter
There are many control methods for inverters for fans and pumps, which can be selected according to specific conditions. Here are a few common scenarios.
(1) Manual adjustment This is the simplest control method, that is, the operator instructs according to the instrument, ...
|
|
Overload trip analysis of an inverter
The motor is able to rotate, but the operating current exceeds the rated value, which is called an overload. The fundamental reflection of overload is that although the current exceeds the rated value, the fluctuation of the excess is not large, and it generally does not constitute a large inrush current.
1. The main reason for overload
(1) Excessive mechanical load ...
|
|
Inverter protection and braking force issues – Sunland
1. What is regenerative braking?
If the motor decreases the command frequency during operation, the motor becomes an asynchronous generator and works as a brake, which is called regenerative (electrical) braking.
2. Can you get more braking power?
Regenerated from the motor ...
|
|
The reason for the humming sound after the motor plus the frequency conversion governor - Senlan
The so-called "hum" sound, that is caused by the frequency of the inverter's output waveform carrier, generally if the inverter you use is a fixed carrier, at the moment the motor is screaming, the human ear is more stimulated, then you can adjust the carrier frequency (inverter skills manual function table ...
|
|
Contact
working hours
