Schneider ATV71 selection and letter meaning

(1) It is necessary to choose a four-pole switch: For the sake of repair safety: in the TT grounding system, the total equipotential bonding is done on the user side, but because the total equipotential bonding at this moment does not include the neutral wire, the line fault (for example: a phase wire grounding) occurs on the grounding electrode on the power supply side.

1. Type recognition: Recognize whether the type of inverter is common with the type of inverter purchased. 2. Transportation acknowledgement: After opening the package, check whether the inverter is damaged during transportation. 3. Voltage recognition: the power supply voltage on the site should be borne by the inverter.

The function of the thermal relay is mainly used to carry out overload maintenance on the asynchronous motor, and his operating principle is that after the overload current passes through the thermal element, the bimetal sheet is heated and twisted to advance the action organization to drive the contact action, so as to disconnect the motor control circuit to realize the motor power-off thermal relay ...

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.

The output frequency of the inverter set by the user according to the needs of the production process. For example: the original power frequency power supply of the fan motor is now transformed into frequency conversion speed regulation, you can set the given frequency to 50 Hz, and there are two ways to set it: one is to use the operation panel of the inverter to input the digital quantity of the frequency 5 ...

AC inverter is the result of the high development of microcomputer and modern power electronics technology. The microcomputer is the center of the inverter, and the power electronics form the main circuit of the inverter. As we all know, the frequency of communication electricity sent from power plants is stable and constant, in our country it is 50 weeks per second ...

1. Insist that the air is moist or unclean, and the pipes are not clean, which may have the following consequences: (1) The wet gas is decomposed into mixed gases such as hydrogen and oxygen under the action of the arc, and the insulation between the fractures after the main contact is broken is destroyed.

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 ...

RXM: Schneider's miniature center relay The first 2: indicates the number of contacts, and the normally open contact is 2 LB: Indicates that the product has LED light The second 2: indicates the number of contacts, and the normally closed contacts are 2 BD: Indicates that the supply voltage used is DC 24V ...

In daily work, the combination of circuit breaker, contactor and thermal relay is the most common combination of motor power supply circuit, and the circuit breaker is generally the short-circuit instantaneous action of magnetic maintenance, the contactor realizes relay logic control, and the thermal relay overload maintenance. The parameter selection method of these three kinds of gas parts is as follows: ( ...

1. In terms of logo, the logo of the product is a sign of identity, so the genuine products will be very exquisite. The imitation is not very well handled on the logo, the plane contrast above the letter "A" is narrow, and even the top is directly pointed. We must pay attention to this point. 2. From ...

1. Engineering planning one by oneWith data at their fingertips and intelligent and sensitive functions, engineers can easily plan and test equipment, improve process availability, and easily complete system integration together – ultimately reducing the planning time by up to 25%. ...

1. Single-phase input/single-phase output: If the capacity is relatively small, the single-entry UPS hanging on any phase of the mains will not be troublesome to the three-way distribution balance of the mains, the load capacity is small, and the output line diameter (current value) of the single-phase output is not ...

What is the difference and contact between the instrument, external work verification, calibration, and calibration? Verification, calibration, and calibration are all static measurement processes that are carried out in cycles. The meanings are: The verification ---- shall be arranged by the legal metrology department or the statutory authorization in accordance with the verification procedures, after ...

To repair the output board driven by the inverter, we must first investigate whether the components on the PCB board are burned out, replace them first, and then analyze what causes the burned out and deal with this problem. And then...

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. ...

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. ...

1. Schneider inverter uses analog output port to indicate the motor frequency, when the motor frequency is 50Hz, why is the output only 16mA? Answer: Because of the large output frequency parameter "TFR" of the inverter, the factory default value is 60Hz. So when the inverter output is 50Hz, the analog output is ...

A. Methods of Communication: (1) Radiation disturbance (2) Conduction disturbance B. Immunity Methods With regard to nuisance signals transmitted by radiation methods, they are primarily weakened by wiring and shielding the radioactive source and the disturbed lines. About Tong ...

Fundamentals of magnetic flux vector manipulation The control of a three-phase asynchronous motor is much more complicated than that of a DC motor because the current, voltage, induced potential, magnetic flux, etc., of the stator and rotor are all alternating. However, the stator winding of the three-phase asynchronous motor is a symmetrical three-phase winding, which exerts a ...