(1) The operation circuit compares the external speed, torque and other instructions with the current and voltage signals of the detection circuit to determine the output voltage and frequency of the inverter.
(2) The voltage and current detection circuit is to detect voltage, current, etc. with the potential barrier of the main circuit.
(3) The driving circuit is the circuit that drives the main circuit equipment, which is blocked from the control circuit and controls the conduction and shutdown of the main circuit equipment.
(4) The I/O circuit makes the frequency conversion better human-computer interaction, which has the input of multiple signals (such as working at multiple speeds, etc.), as well as the input of various internal parameters (such as current, frequency, protection action drive, etc.).
(5) The speed detection circuit sets the signal of the speed detector (TG, PLG, etc.) installed on the shaft of the asynchronous motor as the speed signal, and sends it to the operation loop, and the motor can be made to work according to the command speed according to the instruction and operation.
(6) The protection circuit detects the voltage and current of the main circuit. When an abnormality such as overload or overvoltage occurs, in order to prevent damage to the inverter and asynchronous motor, the inverter stops working or suppresses the voltage and current value.
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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:
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How to distinguish the authenticity of Schneider products
One. QR code scanning
Mainly for low-voltage power distribution and industrial control products produced from September 25, 2013
Method: Scan the QR code on the left side of the product anti-counterfeiting label to enter the self-service inquiry channel
Two. The official website ...
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The UPS boot panel does not show that the UPS is not working - Schneider
Problem: After the UPS is turned on, there is no display on the panel, and the UPS does not work
Problem analysis: Judging from the problem phenomenon, the problem lies in the mains input, the battery and the mains detection part and the battery voltage detection loop:
1. Check ...
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Inverter terminal block classification - Schneider
Inverter terminal blocks belong to a kind of connector, the variety is divided into single hole, double hole, socket, hook, etc., from the data point, copper silver plating, copper galvanized, copper, aluminum, iron, etc. Their effect is mainly to transmit electrical signals or conductive use, in the project, it is the station front engineering for the station after the project reserved for the connection ...
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Pressure reducing valves in Schneider instrumentation
A kind of pressure reducing valve in instrumentation refers to a device used to control the pressure value. Pressure reducing valves are usually used in water-related categories, because from the perspective of the transmission medium, the transmission medium of the equipment is mainly water, but we all know that water is a thing that will ...
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Schneider UPS uninterruptible power supply debugging precautions
1. Check whether all switches are in the disconnected position;
2. Check whether there are foreign objects in the UPS uninterruptible power supply cabinet and transformer; Check whether the flat cable connection is correct and whether it is loose;
3. Check that the connected plug is ...
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Anti-electromagnetic interference method - Schneider
There are three main sources of electromagnetic disturbance to the industrial system: first, space field disturbance, which enters the system through electromagnetic wave radiation; the second is power disturbance, which directly damages the system; The third is the signal disturbance channel, which enters the system through the front and rear channels connected to the host. In order to ensure that the instrumentation ...
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Inverter maintenance mantra method - Schneider
Don't worry about the damage of the frequency conversion, disassemble the machine after the discharge;
It is indispensable to ask for a diagnosis and clarify the problem at the beginning of the test;
Input and output PN junction, three-phase balance and then unshelling;
Look at the nameplate before powering on, the wrong voltage will blow up;
The bus has no electricity to see that it is safe, and the rectifier filter is wrong ...
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Classification of Schneider molded case circuit breakers
1. According to the device method, it is divided into: vertical installation and horizontal installation.
2. According to the use of circuit breakers: power distribution maintenance type, motor maintenance type.
3. According to the wiring method: board front wiring, board back wiring, plug-in wiring.
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Calculation method of inverter capacity - Schneider
1. Accounting of inverter capacity when the load is continuously changed periodically
In many cases, the load of the motor changes periodically. Obviously, in this case, picking the capacity of the inverter according to the minimum load will be overloaded, and it will be uneconomical to select according to the maximum load.
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Is there a restriction on the installation direction when Schneider installs the inverter?
It should be basically stored in the plate, the problem is that the plate with a fully enclosed structure is large in size, takes up a lot of space, and the cost is higher. This can be done by:
(1) The planning of the disc should be based on the heat dissipation required by the actual device;
(2) Profit ...
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Switching power supply circuit fault phenomenon - Schneider
1. The power supply voltage of the secondary load is 0V. There is no response after the inverter is powered on, there is no indication on the operation display panel, and the 24V and 10V voltages of the measurement and control terminals are 0V. Check that the charging resistance or pre-charging circuit of the main circuit is correct, which can be identified as a switching power supply fault. The overhaul process is as follows:
1 ...
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Schneider intermediate relays
Schneider 24VDC intermediate relays are the most common components in control systems. Generally, 2 normally open and 2 normally closed are the most commonly used, but sometimes 4 normally open and 4 normally closed contacts are not enough. Both have different coil and base models.
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Frequency converter main circuit fault solution - Schneider
According to the statistical analysis of the frequency and shutdown time of the specific common problems of the inverter, the repair rate of the main power supply circuit accounts for more than 60%; The main operating parameters are set improperly, resulting in about 20% of common problems; 15% of the common problems of manipulating circuit boards; 5% of common problems are caused by incorrect operation and external anomalies ...
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Instrumentation mechanical equipment system - Schneider
1. Power system:
The wire and cable products selected in the power system mainly include overhead bare wires, busbars (busbars), power cables (plastic cables, oil-paper power cables (fundamentally replaced by plastic power cables), rubber cables, overhead insulated cables), branch cables (replacing part of the busbars), ...
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The reason for the frequent tripping of Schneider leakage switches
1. Defective device
The lead wire of each pile head is not firmly connected and loosened for a long time, which will cause the pile to heat and oxidize, burn out the outer insulation of the wire, and announce sparks and burnt smell, forming undervoltage of the line, and the air switch action.
2. The leakage switch does not match the load
The actual electricity load of the home is large ...
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Schneider touch screen touch deviation causes
(1) Problem--: Contact deviation
Phenomenon 1: The direction of the finger does not coincide with the mouse arrow.
Reason 1: After installing the driver, there is no vertical contact with the bullseye center when calibrating the alignment. Deal 1: Correct the position from the beginning.
Phenomenon 2: Some districts ...
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Schneider Electric executive support merger software Saas company
MergerWare has raised an undisclosed amount of money ahead of its Series A funding round, an executive told TechCircle. The Company provides software solutions to help integrate mergers and acquisitions-related businesses. The funding came from electrical equipment manufacturer Schneider Electric (Schneider ...
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Introduction to Schneider inverter fault code and maintenance method
1. If the fault code presented on the Schneider inverter is AnF, it means that the load of the inverter has slipped, that is, the speed of the encoder does not match the initial value. First of all, we need to check whether the parameters of the motor are stable and the size of the load, ...
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Schneider instrumentation winter insulation measures
The methods adopted usually are: selection, thermal insulation and heat tracing, protection (point inspection, sewage discharge) and so on.
Selection method
Choose the appearance of the type with insulation equipment. According to the category and use of the appearance and the geographical location of the proposed equipment, the insulation and antifreeze requirements of the appearance are proposed, and then submitted to the manufacturer for processing. ...
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