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.
Control module DCS system spare parts EI802F
Control module DCS system spare parts EI801F
Control module DCS system spare parts EHDB280-21-11
Control module DCS system spare parts EHDB280
Control module DCS system spare parts EHDB280
Control module DCS system spare parts EHDB220-21-11
Control module DCS system spare parts EHDB130
Control module DCS system spare parts EHDB130
Control module DCS system spare parts EH450C-1
Control module DCS system spare parts E5EAA HENF105240R1
Control module DCS system spare parts E3ES
Control module DCS system spare parts E3EP HENF315276R1
Control module DCS system spare parts E3EFa HENF452750R1
Control module DCS system spare parts E3EC HENF315125R1
Control module DCS system spare parts E3EB HENF315129R1
Control module DCS system spare parts DX910S
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Control module DCS system spare parts DX731F
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Control module DCS system spare parts DSVC113
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Control module DCS system spare parts DSU14
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Control module DCS system spare parts DSU10
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Control module DCS system spare parts DSTYW121 3BSE007836R1
Control module DCS system spare parts DSTXN001-0
Control module DCS system spare parts DSTX170
Control module DCS system spare parts DSTX152
Control module DCS system spare parts DSTX151
Control module DCS system spare parts DSTX150
Control module DCS system spare parts DSTX001
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Control module DCS system spare parts DSTS104 3BSE007285R1
Control module DCS system spare parts DSTK179
Control module DCS system spare parts DSTK176
Control module DCS system spare parts DSTK155
Control module DCS system spare parts DSTK152
Control module DCS system spare parts DSTK151V
Control module DCS system spare parts DSTK126
Control module DCS system spare parts DSTK114
Control module DCS system spare parts DSTD-W150
Control module DCS system spare parts DSTDN001
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Control module DCS system spare parts DSTD160
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Control module DCS system spare parts DSTD150A
Control module DCS system spare parts DSTD150A
Control module DCS system spare parts DSTD150
Control module DCS system spare parts DSTD150
Control module DCS system spare parts DSTD120
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