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 DSTA180
Display operation panel DSTA180
Display operation panel DSTA171
Display operation panel DSTA170
Display operation panel DSTA160
Display operation panel DSTA133I
Display operation panel DSTA131
Display operation panel DSTA131
Display operation panel DSTA-121A57120001
Display operation panel DSTA-121A
Display operation panel DSTA121
Display operation panel DSTA002
Display operation panel DSSS170
Display operation panel DSSR122M
Display operation panel DSSR122 ABB控制器
Display operation panel DSSR122 4899001-NK
Display operation panel DSSR122 48990001-NK
Display operation panel DSSR122 48990001-LH
Display operation panel DSSR122
Display operation panel DSSR122
Display operation panel DSSR121
Display operation panel DSSR120
Display operation panel DSSR116
Display operation panel DSSR115
Display operation panel DSSR110
Display operation panel DSSC-01C
Display operation panel DSSB170
Display operation panel DSSB146
Display operation panel DSSB145
Display operation panel DSSB140 48980001-P
Display operation panel DSSB140
Display operation panel DSSB140
Display operation panel DSSB120
Display operation panel DSSB110
Display operation panel DSSB-01C 3AFE68300746
Display operation panel DSSB-01C
Display operation panel DSSB-01C
Display operation panel DSSB-01C
Display operation panel DSSA165
Display operation panel DSSA165
Display operation panel DSSA165
Display operation panel DSRF197 3BSE019297R1
Display operation panel DSRF182K13
Display operation panel DSRF182AK02 3BSE014078R1
Display operation panel DSRF182
Display operation panel DSRF180M
Display operation panel DSRF180A 57310255-AV
Display operation panel DSRF180A
Display operation panel DSRF160M
Display operation panel DSRF160
Display operation panel DSRF154M
Display operation panel DSRF150
Display operation panel DSRC113
Display operation panel DSRB310
Display operation panel DSRB110
Display operation panel DSQT239
Display operation panel DSQS118
Display operation panel DSQC697
Display operation panel DSQC697
Display operation panel DSQC679 3HAC028357-001
Display operation panel DSQC679 3HAC028357-001
Display operation panel DSQC679
Display operation panel DSQC679
Display operation panel DSQC668 3HAC029157-001
Display operation panel DSQC668
Display operation panel DSQC664
Display operation panel DSQC663 3HAC0298180881
Display operation panel DSQC663 3HAC029818-001/14
Display operation panel DSQC663 3HAC029818-001
Display operation panel DSQC663
Display operation panel DSQC661 3HAC026253-001
Display operation panel DSQC661
Display operation panel DSQC659
Display operation panel DSQC658
Display operation panel DSQC658
Display operation panel DSQC653
Display operation panel DSQC652 3HNA025917-001
Display operation panel DSQC652
Display operation panel DSQC651
Display operation panel DSQC643 3HAC024488-001
Display operation panel DSQC639 3HAC025097-001
Display operation panel DSQC639
Display operation panel DSQC639
Display operation panel DSQC633
Display operation panel DSQC627 3HAC020466-001
Display operation panel DSQC627 3HAC020466-001
Display operation panel DSQC627
Display operation panel DSQC626A
Display operation panel DSQC626
Display operation panel DSQC626
Display operation panel DSQC611
Display operation panel DSQC611
Display operation panel DSQC609
Display operation panel DSQC609
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