Wave output What does a device error mean

1. The parameter setting is unreasonable.

Solution: Re-tune the parameters, increase the starting voltage appropriately, and increase the time appropriately.

2. Start with full load when starting.

Solution: The load should be reduced as much as possible when starting.

3. The motor is out of phase.

Solution: Check the motor and peripheral circuits.

4. The main component of the soft starter is short-circuited with thyristor.

Solution: Check whether the motor and grid voltage are abnormal. Contact the manufacturer to replace the thyristor.

5. Filter plate breakdown short circuit.

Solution: Replace the filter board.

6. During the use of the soft starter, the vibration generated by the external components makes the internal connection of the soft starter loose.

Solution: Open the cover of the soft starter, connect the display and plug it back in.

7. The control board of the soft starter is faulty.

Solution: Contact the manufacturer to replace the control board.

It stands to reason that this will not happen.

When soft start commissioning, the most important point is to connect the load, whether it is a no-load motor or something else, there must be a three-phase load and three-phase balanced, as long as this condition is met, at least the panel can run.

If you need an external terminal to operate, you can set the corresponding operation mode.

Counting the body and load of about 250kg, the motor 350w 48v can be driven The driving speed is 1m per second and the speed is adjustable and can be reversed, and the motor is selected.

What should I do if the computer does not respond when it is turned on? Don't panic yet, teach you how to quickly troubleshoot and solve it in one minute! -mp4

The main reasons are as follows;

1. Component reasons: The quality of chips and other components on the motherboard is not good, resulting in aging and damage to the motherboard, resulting in the failure of the motherboard.

2. Human reasons: When using the computer, hot-swap hardware at will or touch various connectors with metal objects indiscriminately, resulting in motherboard failure.

3. Dust and static electricity causes: due to dust or static electricity, the motherboard has poor contact, short circuit or burns the chips on the motherboard, resulting in the failure of the motherboard. Causes of poor exposure:

Due to rust, oxidation, weakened elasticity, pin desoldering, breakage, etc., various chips, sockets, and interfaces in the motherboard are not in good contact, resulting in motherboard failure.

Extended material: Solutions

Step 1: First of all, check whether the external wiring of the computer is connected, and plug in each cable again to see if the fault is eliminated.

Step 2: If the fault persists, then open the main chassis to check whether there is any excess metal in the chassis, or a short circuit caused by the deformation of the motherboard, and smell whether there is a burning paste in the chassis, whether there are burned chips on the motherboard, and whether the capacitors around the CPU are damaged.

Step 3: If not, then clean the dust off the motherboard and check if the computer is in good condition.

Step 4: If the fault persists, unplug the reset cable on the motherboard and connect it with other switches and indicator lights, and then use the change cone short-circuit switch to see if it can turn on.

Step 5: If you can't turn on the computer, then use the minimum system method, unplug the data cable of the hard disk, floppy drive, and optical drive, and then check whether the computer can be turned on.

Then connect the above devices to the computer one by one, when connecting a certain device, the fault will recur, indicating that the fault is caused by this device, and finally focus on checking this device.

Step 6: If the fault persists, the fault may be caused by devices such as memory, graphics card, CPU, motherboard, etc. Then, use the plug-in method, swap method and other methods to check whether the memory, graphics card, CPU and other devices are normal, and replace the damaged devices if there are damaged devices.

1. If there is malware on the computer, or a malicious program is generated, it is recommended to clean up the garbage, check and kill the malware, and restart the computer after completion. If not, it is recommended to restore the system.

2. If there is a problem with the computer memory, you can pull out the memory and erase it, and plug it back in to try.

The computer host pressed the boot button, the host did not respond, that must be the fault of the host, the host did not start, the display screen, of course, there is no working condition.

Why don't I set my phone to turn on.,The setting that can turn off a few days ago has this kind of setting.,From the morning before yesterday, the phone said to be updated.,There's no such setting below after that.,It's very inconvenient to use.,Please restore the original settings for me.,I'm used to it.,The original is convenient.。 Thank you.

It could be a virus, or it could be that you didn't plug it in, or it could be that some part of the chassis was loose.

Same problem: Solution: Remove the motherboard battery, if the power supply has tried to boot up before but there is no response, after this operation, the computer will automatically turn on after a while Reason: The electrostatic voltage of the motherboard is too high, the power supply is blocked by a large current, and it cannot be turned on.

It may be that the power supply is not plugged in properly, or the switch is not in good contact.

1. Check whether the power supply wiring is normal 2. Observe whether the power supply fan is rotating (you can feel it with your hands) 3. Open the main chassis, unplug the jumper between the switch and the motherboard, and short it to observe whether it is started; If it starts, it is judged that the switch button is faulty, and the power supply fan is rotating if it does not start, which means that the motherboard is faulty.

Either the main unit is out of power, or the switch button is broken.

The power cord may be broken, change the power cord, is it good.

Didn't you press it?

Remove the case, and then press the source to turn on the button, is there a light, if there is a light, there is no boot screen on the display, then it is generally a little problem with the memory module, you use the eraser to wipe it, if there is no response, just change the power cable, if there is no response then you have to go to the repair shop to see.

What should I do if the computer does not respond after pressing the power button? What is the problem that the computer cannot be turned on after pressing the power button? Recently, several users have reported that the computer has not been able to turn on normally after pressing the boot button, and the following will give you an analysis of the specific reasons and solutions.

The specific reason is bai

And the solution is as follows: du

1.The computer didn't respond at all, that

It may be that the power supply is not connected proprietally, check the power strip.

genus and chassis plugs, just plug them back in.

2.There is also a computer case has been opened, but the display screen is still black, then this situation may be that the power supply of the display screen is not connected or there is a problem with the connector connected to the computer case, then you need to check whether the power supply is connected normally, and whether the display screen is also in the normal connection of the computer host.

3.If there is a problem with the motherboard wiring, then it needs to be sent to a computer repair shop for professional repair.

4.It is caused by poor contact between the memory or graphics card gold finger and the motherboard, then you need to unplug the memory and graphics card, clean the gold finger and then reinstall it.

5.There is also a possibility that the computer has been infected with a Trojan virus, and the computer has not been able to boot normally, in this case, you can go to the computer repair center to repair.

6.It may also be that there is a problem with the wire or power supply, it may be eaten by rats or damaged by other circumstances, in this case, you only need to check the wiring and replace it if there is a problem.

Represents the version of the phone.

For example, if the model number is followed by "A", then it represents the first batch of production leaving the factory, and so on.

The letters in front of this "a" can be used to distinguish the versions

CH A is the Bank of China, ZP A is the Hong Kong bank, KH A is the Korean version, LL A is the US version, DN A is the German version, TA A is Taiwan, ZA A is Singapore and Malaysia, AB A is the UAE, RS A is Russia, GR A is Greece, IP A is Italy, PP A is the Philippines, FB A is France, and C A is the Canadian version.

Check the phone model.

Take the iPhone 7 Plus phone as an example:

1. Enter the desktop of the mobile phone and click the settings button.

2. In the iPhone 7 Plus phone settings list, find and tap the universal button.

3. In the general list, click About This Mac at the top.

4. In the About This Machine list, find the model corresponding to the right side of the model.

Apple model number represents meaning, here is an example of Apple model MD242ZP A:

1. "M" - represents a normal retail model, and most of the Apple mobile phones purchased start with "M"; There are also two types of "f" and "p" starts, "f" means that it is a refurbished machine, which is also sold on Apple's official website, and "p" means that it is a customized version of the machine.

2. "D242" represents the specific model of the machine, iPhone4S is the beginning of D, iPhone5 is the beginning of E, iPhone5S is the beginning of F, where C, D, E, F are the meaning of the first generation of models.

3. "ZP A" means the region of the mobile phone**, CH A is the national bank, ZP A is the Hong Kong bank, KH A is the Korean version, LL A is the American version, DN A is the German version, TA A is Taiwan, ZA A is Singapore and Malaysia, AB A is the United Arab Emirates, RS A is Russia, and GR A is Greece.

Taking the Apple mobile phone model MD242ZP as an example, it is split into M, D242, and ZP, which represent three layers of meaning:

1. In the first part, "m" represents the normal retail model, and most people get the machine that starts with "m"; There are also two types of "f" and "p", "f" means that this is a refurbished machine, which can also be purchased on Apple's official website, and "p" means that this is a customized version of the machine (such as laser etching custom content on the back plate).

2. In the second part, "D242" represents the specific model (including color) and capacity of the machine, combined with the first part, it can be determined that this machine is iPhone 4S, black, 32G.

3. In the third part, "zp" represents the region of the machine, and zp represents the machine sold in Hong Kong and Macau.

Apple model stands for meaning: the performance, specifications, and size of Apple devices, tools, etc. Apple models can be viewed in Settings> General, > About This Mac.

To the right of the Model Number, you'll see the part number. To see the model number, tap the part number. The specific steps are as follows:

1) Tap Settings.

2. Tap General.

3. Tap About this machine.

4) You can view the details of the mobile phone model.

5) Part number to the right of the model number.

6) You can check the model number.

1. Check on your device: To find the model number on iPhone 8 or later, remove the SIM tray and look for it in the SIM tray slot. Make sure that the top of your location is well lit.

The model number is located on the upper side, which is the side of the display.

2. On iPhone 7 or earlier, iPad, or iPod touch, find the model number on the back of the device.

I am currently a junior undergraduate student in the College of Plant Protection, China Agricultural University.

During this time in Agricultural University, you can feel a strong learning atmosphere, and you can hear someone memorizing words or discussing pests and diseases, PCR, etc. Now, I don't feel comfortable not hearing these things for a day.

1. Scientific research levelTake our College of Plant Protection as an example: (because we have so many professors and so on in the past few years since the College of Plant Protection was established, let alone other colleges).

There are more than 30 professors and associate professors in our college, one "Changjiang Scholar", one national famous teacher, and one chief scientist of the 973 Program; For example, Peng Youliang and so on. There are also many high-quality courses (such as "General Entomology", etc.) and national teaching teams, and there are many experimental sites, such as "Shangzhuang", "Zhuozhou Base" and so on.

2. History of the school's developmentChina Agricultural University was first established as Beijing Normal University in 1905. In 1949, three agricultural colleges, including the College of Agriculture of Peking University, the College of Agriculture of Tsinghua University, and the College of Agriculture of North China University, were merged to form Beijing Agricultural University.

After a few years, a number of schools combined with the Department of Mechanical Engineering of Beijing Agricultural University to form Beijing Agricultural Mechanization College, also known as Beijing Agricultural Engineering University. In 1985, the two universities merged into China Agricultural University. The current principal, Sun Qixin.

It can be seen that our agriculture has a long history, and after several twists and turns, this 985 university was finally built.

3. Foreign exchange and cooperationThe full name of Agricultural University is "Open China Agricultural University", and the "openness" here not only refers to institutional teaching, etc., but also to foreign exchanges! We have close cooperation and exchanges with many universities in many foreign countries, such as the United States, Canada, Japan and other 41 countries and 208 universities have established friendly and cooperative relations.

At the same time, we cooperate with high-level universities to establish international research centers, and invest special funds to support each college to introduce foreign high-quality intellectual resources and develop high-level substantive cooperation according to the development orientation and goals of the unit.

Recently, in our college, there have been registration activities for "cultivation class", "planting class" and "planting class". Almost every year, nearly 600 high-level delegations from world-renowned universities visit the school. In 2014, a total of 562 international students from 75 countries studied at our university, of which 55% were pursuing bachelor's, master's or doctoral degrees, and 45% were visiting students for professional courses, cooperative research or advanced studies in Chinese language and culture.

Although, our school is not well-known among 985 universities, but the overall strength is beyond doubt! We are very low-key, so we don't rank so high, because we don't care about rankings, we only do practical things. Only when you come to Agricultural University can you feel the simplicity and truth-seeking of Agricultural University!