Description
hardware flow control. It is an ideal choice in the field of industrial automation.
[Introduction] PLC and frequency converter are two important electrical equipment in the field of industrial automation control. This book
combines the introductory knowledge of PLC and frequency converter. The main contents include introduction to PLC, PLC composition and
principle, and the use and application of PLC programming software. System development, basic instructions and applications, step instructions
and applications, functional instructions and use, the structure and principle of the frequency converter, the use of the frequency converter, as well as
the selection, installation and maintenance of the frequency converter.
What is a frequency converter ? Generally speaking, it is: AC – DC – AC (it can also be said to be rectifier first – then inverter). The frequency converter
that undergoes this process is also called AC-DC-AC frequency conversion. Currently, it is also used in various industries. One of the more commonly
used ones. In addition, there is also an AC-AC conversion, which is also called an AC converter.
1. What is a frequency converter?
Frequency converter is a power control device that uses the on-off function of power semiconductor devices to convert industrial frequency power into
another frequency. The frequency converter is mainly composed of rectifier (AC to DC), filtering, inverter (DC to AC), braking unit, drive unit, detection unit, microprocessing unit, etc.
The frequency converter is a device that converts industrial frequency power supply (50Hz or 60Hz) into AC power supply of various frequencies to
realize variable speed operation of the motor. The control circuit completes the control of the main circuit, and the rectifier circuit converts the AC
power into DC power. The DC intermediate The circuit smoothes and filters the output of the rectifier circuit, and the inverter circuit reverses the DC
power into AC power. For inverters that require a lot of calculations, such as vector control inverters, sometimes a CPU for torque calculation and some
corresponding circuits are needed. Variable frequency speed regulation achieves the purpose of speed regulation by changing the frequency of power supply to the motor stator winding.
Display operation panel DO802
Display operation panel DO802
Display operation panel DO801-eA
Display operation panel DO801 3BSE020510R1
Display operation panel DO801
Display operation panel DO801
Display operation panel DO801
Display operation panel DO630
Display operation panel DO620
Display operation panel DO620
Display operation panel DO610
Display operation panel DO210
Display operation panel DNC115
Display operation panel DLM02
Display operation panel DLM01
Display operation panel DL22N-22
Display operation panel DKL032
Display operation panel DIGIFAS7201
Display operation panel DIGIFAS7116
Display operation panel DIGIFAS7108
Display operation panel DIGIFAS7105
Display operation panel DI93a HESG440355R3
Display operation panel DI890
Display operation panel DI890
Display operation panel DI885
Display operation panel DI885
Display operation panel DI840-eA
Display operation panel DI840
Display operation panel DI831
Display operation panel DI831
Display operation panel DI830 3BSE013210R1
Display operation panel DI830
Display operation panel DI830
Display operation panel DI828-eA
Display operation panel DI825
Display operation panel DI825
Display operation panel DI821Z
Display operation panel DI821-eA
Display operation panel DI821
Display operation panel DI821
Display operation panel DI820-eA
Display operation panel DI820
Display operation panel DI820
Display operation panel DI818-eA
Display operation panel DI818
Display operation panel DI814-eA
Display operation panel DI814
Display operation panel DI814
Display operation panel DI814
Display operation panel DI811-eA
Display operation panel DI811
Display operation panel DI811
Display operation panel DI810-eA
Display operation panel DI810 3BSE008508R1
Display operation panel DI810
Display operation panel DI810
Display operation panel DI810
Display operation panel DI803-eA
Display operation panel DI803
Display operation panel DI803
Display operation panel DI802-eA
Display operation panel DI802
Display operation panel DI802
Display operation panel DI801-eA
Display operation panel DI801
Display operation panel DI801
Display operation panel DI801
Display operation panel DI801
Display operation panel DI724F
Display operation panel DI651
Display operation panel DI650 3BHT300025R1
Display operation panel DI650
Display operation panel DI620
Display operation panel DI610
Display operation panel DI581-S
Display operation panel DI524
Display operation panel DI210
Display operation panel DI04
Display operation panel DI01
Display operation panel DDO02
Display operation panel DDO01
Display operation panel DDI03
Display operation panel DDI01
Display operation panel DDC779CE102 3BHE027859R0102
Display operation panel DDC779CE102 3BHE027859R0102
Display operation panel DDC779BE02 3BHE006805R0002
Display operation panel DDC779BE02 3BHE006805R0002
Display operation panel DCS150-7E
Display operation panel DCP10
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