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 REF610
Display operation panel REF601 CE446BB1NH
Display operation panel REF601
Display operation panel REF543KM129AAAB
Display operation panel REF543KM127AAAA
Display operation panel REF543KB127AAAA
Display operation panel REF542PLUS 1VCR007346
Display operation panel REF542PLUS 1VCF752000
Display operation panel REF542plus
Display operation panel REF542PLUS
Display operation panel REF542PLUS
Display operation panel REF541KM118AAAA
Display operation panel REF541
Display operation panel RED615
Display operation panel REC670
Display operation panel REC650
Display operation panel RDCU-12C 3AUA0000036521
Display operation panel RDCU-02C
Display operation panel RDCU-02C
Display operation panel RDCU-02C
Display operation panel RDCO-03C
Display operation panel RDCO-01
Display operation panel RB520 3BSE003528R1
Display operation panel RB520
Display operation panel RB520
Display operation panel RAPI-01C 3AUA0000036340
Display operation panel RAPI-01C 3AUA0000036340
Display operation panel RAIO-01
Display operation panel R1.SW2/3
Display operation panel R1.SW2/3
Display operation panel R1.CAIR
Display operation panel R1.CAIR
Display operation panel QHMX325
Display operation panel QHMV306
Display operation panel QHMV303A
Display operation panel QHFT201
Display operation panel QHFT200F
Display operation panel QHFG207
Display operation panel QHFG205
Display operation panel QHFG-203
Display operation panel QHFC210
Display operation panel QHFB-210
Display operation panel QHFA-301
Display operation panel PXAH401
Display operation panel PXAH401
Display operation panel PU519 3BSE018681R1
Display operation panel PU519
Display operation panel PU518
Display operation panel PU517 3BSC980050R46
Display operation panel PU517
Display operation panel PU517
Display operation panel PU517
Display operation panel PU516A 3BSE032402R1
Display operation panel PU516 3BSE013064R1
Display operation panel PU516 3BSE013064R1
Display operation panel PU516 3BSE013064R1
Display operation panel PU516
Display operation panel PU516
Display operation panel PU516
Display operation panel PU515A 3BSE032401R1
Display operation panel PU515A
Display operation panel PU515A
Display operation panel PU515
Display operation panel PU514A
Display operation panel PU514A
Display operation panel PU514 3BSE013062R1
Display operation panel PU514
Display operation panel PU514
Display operation panel PU513v2 3BSE013034R1
Display operation panel PU513
Display operation panel PU512V2 3BUR001401R1
Display operation panel PU512v2
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