Requirements for electrical barriers. Between A and B circuits, signal transmission is required, but because of the disparity between the power supply levels of the two circuits, one is hundreds of volts, and the other is only a few volts; Two very different power supply systems, unable to share the power supply;
A circuit is related to strong electricity, and there is a risk of electric shock to human touch, so it needs to be blocked. The B circuit board is a part that is often touched by the human body, and it should not be mixed with high-risk voltage. Between the two, it is necessary to complete the signal transmission and electrically block it;
The use of high-impedance equipment such as op amp circuits, and the transmission of weak voltage signals by circuits to analog circuits, make the anti-interference treatment of circuits a more troublesome thing - the noise disturbance mixed from various channels may be anti-customer-oriented, and the useful signals will be "drowned";
In addition to considering the safety of human touch, it is also necessary to consider the safety of circuit equipment, when the input side of the photocoupler is damaged by strong voltage (field) impact, due to the blocking effect of the optocoupler, the output side circuit can be safe and sound.
The above four reasons have contributed to the research and development, development and practical use of optocoupler equipment. The fundamental function of optocoupler is to make useful electrical blocks on the input and output side circuits; Able to transmit signals in the form of light; It has a good anti-disturbance effect; The output-side circuitry can avoid the introduction and shock of strong voltages to a certain extent.
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Problems affecting the normal operation of the inverter - Delixi
Seriously affect the normal operation of the inverter. The core components of the inverter are IGBT power semiconductor switching components. When they are working properly, they generate a lot of heat. If there is no fan forced cooling, the sensing head will immediately detect (IGBT) overheating (IGBT) and send it ...
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Delixi rangefinder analysis
Delixi Group focuses on low-voltage power distribution and industrial automation in the field of comprehensive solutions suppliers, founded in 1984, is a collection of industrial operations, brand operations, capital operations as one of the large enterprise groups, for 18 consecutive years ranked among the top 500 Chinese enterprises. Delixi rangefinder is designed for ...
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The type of regulated power supply - Delixi power supply
(1) Ferromagnetic resonant communication regulator. It consists of a full choke and a corresponding capacitor, and has a constant voltage volt-ampere characteristic (AC regulated power supply).
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Brief description of power distribution appliances - Delixi
1. The difference between power distribution appliances and control appliances
Power distribution appliances: As the name suggests, it is a device that distributes electricity. Electricity, after coming out of the generator, is output by the bus, and can not be directly connected to the power equipment, and the demand is first output into the power station, which is the power distribution equipment, which is ...
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The structure of Delixi small contactor
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Inverter plus output reactor - Delixi
input/output reactor for frequency conversion speed regulation; Because the inverter is often affected by the impact of inrush current and surge voltage in the process of driving the inverter motor operation governor, which will seriously damage the performance and service life of the inverter and the motor, so it is necessary to install a transmission in front of it.
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The reason for the instability of the voltage regulator output - Delixi
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This...
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The main components of Delixi inverter are composed
1) Rectifier
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Is a circuit breaker an air switch? - Delixi
1. Circuit breaker refers to a switchgear that can turn on, carry and turn off the current under normal circuit conditions and turn on, carry and turn off the current under abnormal circuit conditions within a regular time.
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Precautions for leakage vacuum circuit breaker circuit - Delixi
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Low dropout linear regulator parameters and advantages and disadvantages - Delixi
Grounding current, also become quiescent current, load regulation (the smaller this value, the stronger the LDO can press the load) linear regulation (the smaller, the less influence of the input voltage on the output voltage, the better the LDO function) power supply ratio (PSSR), reflecting the Delixi LDO to the interference signal ...
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Characteristic:
1. It has good stability and reliability to ensure the stability and safety of the system operation.
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2. Single-phase three-phase connection, the divider on the market is scored as A, B, and C three-phase wiring for three-phase electricity, which is not only inconvenient for installation, but also prone to phase sequence errors.
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First, press the "Cancel Recovery Button" 4 times in a row;
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In the process of practical speed regulation, an ordinary AC power supply with adjustable frequency can not meet the requirements of speed regulation and control of asynchronous motors, and must also take into account the effective use of the motor magnetic field, the pressing starting current and the desired torque characteristics, such as low-frequency torque characteristics.
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Delixi inverter built-in bypass soft starter CDRA-K3
Delixi built-in bypass soft starter CDRA-K3 series is a set of soft start, soft parking and multi-functional protection in one of the motor control equipment. Realize a smooth starter motor without impact during the entire starting process. CDRA-K3 series has built-in bypass contactor and control power supply.
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The five provinces of the "Strong Foundation Plan" take the lead in building a win-win ecology
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Delixi inverter parameter setting method
P0.00: Set to G type (constant torque load type).
P0.01: Set to 1 fundamental efficacy model.
P0.02: Set to 1V/F control.
P0.03: Set to 0 keyboard control.
P0.04: Set to be given by the external terminal for multi-segment commands.
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Forte:
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