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.
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XVME-244 Digital I/O module
XVME-566 High performance VMEbus compatible analog input module
XVME-560 VMEbus backplane Compatible module
XVME-542 Analog input/output module
XVME-230 Intelligent counter module
XVME-232 Intelligent counter module
XVME-240 TTL I/O module of the 80 channel
XVME-200 Digital I/O modules guarantee quality
XVME-290 digital I/O module
XVME-976/204 Adapter module
XVME-212/2 Digits Enter the VME module
XVME-212/1 The number is entered into the VME module
XVME-530 8 channel isolation analog output module
XVME-201 Digital I/O module
XVME-220 digital output module
XVME-110 EEPROM memory module
XVME-977 hard disk drive/floppy disk drive module
XVME-957 Mass storage subsystem
XVME-210 32 channel digital input board
XVME-103 single height, VMEbus compatible board
XVME-293 single height, VMEbus compatible board
XVME-675 PC/AT processor module
XVME-531/2 16 channel isolated/non-isolated analog output module
ABB CMA136 3DDE300416 Generator Relay Terminal Board CMA 136
ALLEN BRADLEY 81007-465-51-R DRIVE BOARD
ALLEN BRADLEY 81003-438-51-R 80190-220-01-R REPLACEMENT PARTS KIT
ALLEN BRADLEY 81001-340-71-R Thyristor module
ALLEN BRADLEY 80165-081-51-R DRIVE BOARD
ALLEN BRADLEY 80165-081-51-R REPLACEMENT BOARD
ENTEK C6660 Vibration monitoring module
ENTEK C6691 Vibration monitoring module
PHILIPS 958481320100 LCB Digital input module
PHILIPS 958481320400 PIF Ethernet communication card
PHILIPS 958481321220 PD208 Control system module
PHILIPS 958481321300 PSB Power controller
PHILIPS 958481320201 PROC+ Analog output module
PHILIPS 958481320201 PROC PLUS CPU controller
PHILIPS 958481321220 PD208 Variable frequency driver
PHILIPS 958481320100 LCB I/o processor
PHILIPS 958481321200 PD216 Driving power module
ABB 216NG61A HESG441633R1 HESG216875/K
RELIANCE ELECTRIC S-D4043C Controller module
RELIANCE ELECTRIC S-D4041B Synchro Card
Allen-Bradley SK-H1-ASICBD-D1030 PowerFlex 700 ASIC board
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