1) Survey and research method. The investigation and research method is to "see", "listen", "smell", "touch" and "ask" to understand the significant faulty phenomena; After visiting the operator, understand the cause of the problem; A common way to help find faults after asking others or consulting information. This method is highly efficient, empirical, and skilled, and needs to be continuously accumulated and summarized in long-term production practice.
2) Logical analysis. The logic analysis method is a method of fault analysis based on the working principle of the electrical control circuit, the action program of the control link and the connection between them, combined with the fault phenomenon. It focuses on the fault phenomenon, analyzes the circuit specifically, improves the pertinence of maintenance, shortens the policy, quickly identifies the fault part, and is suitable for checking the fault of the messy line.
3) Star measurement. The measurement method is a method of using a calibration lamp, a voltage tester, a multimeter, a buzzer, an oscilloscope, etc. to measure the live or power-off of the line. When using a multimeter ohmic block and buzzer to detect whether the electrical components and circuits are open or short-circuited, it is necessary to block the power supply. Together, when measuring, special attention should be paid to whether there are parallel branches or other circuits that have an impact on the tested line to prevent misjudgment.
4) Experimental method. The experimental method is a method to find the fault by electrifying the experiment without damaging the electrical and mechanical equipment. The power-on experiment is generally carried out in the form of "point and touch". If it is found that the operation of an electrical appliance does not meet the requirements, it means that the scope of the fault is in the circuit related to the electrical appliance, and then further check in this part of the faulty circuit to find out the fault point. Sometimes it is also possible to temporarily cut off part of the circuit (such as the main circuit) to see whether the action of each control link is normal, but it is necessary to pay attention not to use external force to make the contactor or relay act at will, so as to prevent accidents.
|
More on that
|
Schneider servo motor advantages
Schneider servo motor is one of the brands of servo motor, the performance is relatively good, is a brand made in Germany, in China ** degree is relatively high. Servo motor refers to the servo system, (servomechanism) in which the mechanical components are controlled.
|
|
Inverter power settings, waveform test issues
1. After the inverter is repaired, the power number demand is corrected, don't forget
Generally, an inverter corresponds to a power number (also known as the number of horsepower), for example, a 75 kilowatt inverter is set under heavy load, and 100 kilowatts is set under light load. In this way, the customer will not use it to present ...
|
|
The energy-saving effect of using frequency converter for fan and pump loads
Why is the use of inverter for fan and pump loads to save energy?
According to the basic laws of fluid mechanics, it can be seen that the fan pump load is a typical square rotation load, and its main characteristics are: speed n and torque T and load ...
|
|
Schneider PLC series features
Schneider TSX08 series NEZA PLC
It is a small PLC with abundant functions, small size, strong general-purpose type, and high cost performance.
NEZA series adopts a new generation of handheld programmer, and the operating system adopts PL707-WinCE to support Chinese interface. In the process of use, whether it is ...
|
|
Methods to reduce the interference of Schneider inverters themselves
When there are high-frequency impact loads such as welding machines, electroplating power supplies, electrolytic power supplies, or slip ring power supply near the power supply system of Schneider inverter, the inverter itself is simply protected due to interference. It is recommended that users choose the following methods:
...
|
|
Schneider servo model introduction
LXM23DU01M3X servo drive 0.1 kW
LXM23DU02M3X servo drive 0.2 kW
LXM23DU04M3X Servo drive 0.4 kW
LXM23DU07M3X Servo drive 0.75 kW
LXM23DU10M3X ...
|
|
Schneider inverter series at a glance
1. ATV11 series
The Schneider ATV11 series is primarily used in three-phase asynchronous motor inverters with a power range of 0.18 to 2.2 kW.
2. ATV12 series
ATV12 Schneider inverter for power scale 0.18k...
|
|
How Schneider contactors work
How it works
Contactor refers to an electrical appliance that uses a coil to flow through an electric current to generate a magnetic field, so that the contact is closed, and then the load can be controlled. Because it can quickly block the main circuit and frequently connect with the equipment of the high-current control circuit, it has been used in electrical engineering.
|
|
Precautions for the use and maintenance of instruments and meters - Schneider
Attention should be paid to the following matters during the use and maintenance of the appearance of the instrument:
1. Don't blindly knock and bump when overhauling, so as not to expand the problem, and the more you repair, the worse it will become.
2. Do not plug and unplug various control boards and plugs with electricity. Due to the power-on ...
|
|
Schneider lamellar relays
Schneider RSL Thin Sheet Relay, as a member of the large family of ZelioRelay series relays, RSL Thin Plate Relays will be committed to saving users space and time in the device, and improving the stability of the system.
Schneider Electric Vice President of China, Head of Industrial Division, Xiu De...
|
|
Technical causes of Schneider low-voltage circuit breaker accidents
(1) Operational failure
Operation failure is manifested by the dragging or misoperation of the circuit breaker. Because the fundamental and important function of the high-voltage circuit breaker is to act correctly and quickly remove the fault of the power grid. If the circuit breaker is dragged or misoperated, it will pose a serious threat to the power grid, first of all: (1) expansion ...
|
|
Schneider miniature circuit breaker problem analysis and answer
Fault 1: The shell of Schneider MCB product is yellowed or burned.
Reason 1: It is very likely that the magnetic coil inside the circuit breaker is burned out because of harmonics or high-frequency signals.
Method 1: * The good thing is that the filtering can be satisfied with the use of 50Hz/60Hz power frequency.
...
|
|
A brief description of the working principle of Schneider power soft starter
Schneider ATS48 soft starter is composed of three opposite parallel thyristors, which are connected in series between the three-phase power supply and the motor, by changing the trigger angle of the thyristor gate pulse, the conduction angle of the thyristor gradually increases from zero, according to the pre-set soft starter parameter curve, the motor output torque ...
|
|
Schneider low-voltage circuit breaker selection method
1. Determine the type and maintenance situation of Schneider circuit breaker according to the maintenance requirements of the line, and determine the selection of frame type, device type or current limiting type. Generally speaking, the short-circuit current breaking ability of Schneider frame circuit breaker is larger and larger than that of device type. Usually, the branch line chooses ...
|
|
Schneider Multi9 Series C120 FAQs
1. What are the characteristic curves of Schneider Multi9 series C120L?
A: C/D curve.
2. What is the rated current level of Schneider Multi9 series C120?
A: 63A, 80A, 100A, 125A.
3. Shi ...
|
|
Schneider Modicon M100 Programmable Controller Features and Benefits
The Schneider Electric Modicon M100 programmable controller is part of the Easy Series and is suitable for simple I/O logic control machines.
characteristic
AC power supply
High-speed processor with 0.2μs/boolean amount
Built-in a ...
|
|
The type of signal output from the Schneider sensor
The type of sensor output signal
Sensors are commonly used detection devices that convert perceived information into electrical signal outputs, and are used in a variety of applications. What can be divided into the output signal mode of the sensor ...
|
|
Common maintenance problems for Schneider drives
1. Why is the inverter used for fan and pump loads to save energy?
According to the basic law of fluid mechanics, it can be seen that the fan pump load is a typical square rotation load, and its primary feature is that the speed n has the following relationship with the torque T and the load power P: T∝n2, P∝n3. ...
|
|
Heat dissipation strategy for frequency converters – Schneider
Drives power and operate commercial and industrial motors, and thermal protection is necessary in accordance with their planning and operating environment. The main advantages of the frequency converters are flexible handling, smooth start-up and shutdown functions, and significant energy savings due to centrifugal fans and pumps operating under variable loads. ...
|
|
Schneider seizes the opportunity of e-commerce
Beijing, China, 24 August 2021 – Looking at the history of the logistics industry, the changes brought about by the development of e-commerce in recent years are rare. According to Digital Commerce 360, in 2020, United States customers spent $861.12 billion online, a year-on-year increase.
|
|
Contact
working hours
