Description
3500/42-01-00 BENTLY overspeed protection module
3500/42-01-00 BENTLY overspeed protection module
Module Clips Drive controller servo moto
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2. Principle of frequency converter
In embedded development, the control of motors is often involved. Currently, frequency conversion control of AC motors is widely used, so let’s briefly introduce the frequency converter by looking at the diagram, assuming that you already understand the principle of the motor.
The block diagram is as follows:
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 inverter relies on the switching of the internal IGBT to adjust the voltage and frequency of the output power supply, and provides the required power supply voltage according to the actual needs of the motor, thereby achieving the purpose of energy saving and speed regulation. In addition, the inverter also has many protection functions. , such as overcurrent, overvoltage, overload protection, etc. With the continuous improvement of industrial automation, frequency converters have also been widely used.
A typical inverter system diagram is shown below. It mainly includes operation panel, VFD controller, motor and other parts.
1. Typical structure:
Mainly includes: control platform, measurement circuit, power circuit, protection circuit, etc.
There are two common types of frequency converters: voltage type and current type. Among them, the power inverter part mostly uses power tubes such as IGBT and IGCT.
2. Typical algorithm:
Among them, the control algorithm represented by Siemens is mainly based on coordinate transformation (vector control). Friends who are interested in the algorithm represented by ABB can search for information by themselves (direct torque control) and will not go into details here.
3. Vector control:
Many chip MCU and MPU manufacturers have provided block diagrams and algorithm libraries for variable frequency vector control. Those who are interested can study it. For example, the following figure is a block diagram provided by Microchip
9907-164 505 Digital microprocessor
9907-149 Overspeed protection module
9771-210 Base module TRICONEX
9200-06-02-10-00 Two-wire sensor
9199-00003 Monitoring module
8602-FT-ST Field terminal
8521-EB-MT Bus interface module
8502-BI-DP Bus interface module
8440-1713/D Governor module
8440-1706-B Synchronizer module
8327-1600 Overspeed safety device
8202-HO-IS 8-channel analog input module
8201-HI-IS 8-channel analog input module
8200-1302 505D digital governor turbine control
8200-226 Servo valve driver
6445-001-K-N High performance microstep driver
6410-024-N-N-N Stepper driver
6410-009-N-N-N Pulse encoder
6189-RDT10C Graphic color display
6186M-17PT High performance industrial display
6181P-17A2MW71DC Integrated display industrial computer
6181P-15TPXP High performance model unit
6176M-17PT Allen-Bradley’s industrial display
05704-A-0122 Analog input module
05701-A-0329 Analog input module
05701-A-0302 Honeywell Single channel control card catalysis
5601-RIO-MCM Remote I/O adapter gateway
5517B Laser interferometer system
5466-316 Programmable controller
5370-CVIM Allen-Bradley vision platform
5302-MBP-MCM4MB+ Protocol driver
5204-DFNT-PDPMV1 Ethernet /IP to PROFIBUS
5136-PFB-VME Profibus interface card
5136-PFB-PCI Communication adapter module
5136-PFB Profibus interface card
04380A Pulse generator
4301-MBP-DFCM Master/slave gateway
4073 TRICONEX Control system
TRICONEX 3720 Digital input module
3625 TRICONEX Digital input module
3100-MCM Communication interface
3096-1000 radiometer Radiant flux
3000RX-8D4A-A-13-MM-ST Power board module
2711P-T12W22D9P Programmable logic controller
2711P-T12C4D8 Man-machine interface
2711P-T10C4D8 PanelView 6 Plus 1000 series terminals.
2711P-T10C4D1 1000 Operator Terminal
2711P-T10C4A9 6 The terminal provides the extension function
2711P-T6M5D Operator Interface Terminal
2711P-T6C5A Operator Interface Terminal
2711P-RDT15C Allen-Bradley display module
2711P-K6C20D Operator Interface Terminal
2711PC-B4C20D8 Operating interface device
2711-K10C20 Graphic operation terminal
1.Has been engaged in industrial control industry for a long time, with a large number of inventories.
2.Industry leading, price advantage, quality assurance
3.Diversified models and products, and all kinds of rare and discontinued products
4.15 days free replacement for quality problems
ABB — AC 800M controller, Bailey, PM866 controller, IGCT silicon controlled 5SHY 3BHB01 3BHE00 3HNA00 DSQC series
BENTLY — 3500 system/proximitor, front and rear card, sensor, probe, cable 3500/20 3500/61 3500/05-01-02-00-001 3500/40M 176449-01 3500/22M 138607-01
Emerson — modbus card, power panel, controller, power supply, base, power module, switch 1C31,5X00, CE400, A6500-UM, SE3008,1B300,1X00,
EPRO — PR6423 PR6424 PR6425 PR6426 PR9376 PR9268 Data acquisition module, probe, speed sensor, vibration sensor
FOXBORO — FCP270 FCP280 FCM10EF FBM207 P0914TD CP40B FBI10E FBM02 FBM202 FBM207B P0400HE Thermal resistance input/output module, power module, communication module, cable, controller, switch
GE —- IS200/215/220/230/420 DS200/215 IC693/695/697/698 VMICPCI VMIVME 369-HI-R-M-0-0-E 469 module, air switch, I/O module, display, CPU module, power module, converter, CPU board, Ethernet module, integrated protection device, power module, gas turbine card
HIMA — F3 AIO 8/4 01 F3231 F8627X Z7116 F8621A 984862160 F3236 F6217 F7553 DI module, processor module, AI card, pulse encoder
Honeywell — Secure digital output card, program module, analog input card, CPU module, FIM card
MOOG — D136-001-007 Servo valve, controller, module
NI — SCXI-1100 PCI – PXIE – PCIE – SBRIO – CFP-AO-210 USB-6525 Information Acquisition Card, PXI Module, Card
Westinghouse — RTD thermal resistance input module, AI/AO/DI/DO module, power module, control module, base module
Woodward — 9907-164 5466-258 8200-1300 9907-149 9907-838 EASYGEN-3500-5/P2 8440-2145 Regulator, module, controller, governor
YOKOGAWA – Servo module, control cabinet node unit
Main products:
PLC, DCS, CPU module, communication module, input/output module (AI/AO/DI/DO), power module, silicon controlled module, terminal module, PXI module, servo drive, servo motor, industrial display screen, industrial keyboard, controller, encoder, regulator, sensor, I/O board, counting board, optical fiber interface board, acquisition card, gas turbine card, FIM card and other automatic spare parts