Description
3500/22-01-01-R0 BENTLY vibration monitoring system
3500/22-01-01-R0 BENTLY vibration monitoring system
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
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6100BZ10010B ABB module
EL3020 ABB Power supply Unit
DSBC110 57310256-E ABB module
SPHSS13 ABB Bailey Hydraulic Servo Module
UFC719AE01 3BHB003041R0101 ABB control unit
PPA322B HIEE300016R2 HIEE400235R1 ABB control unit
PMA323BE HIEE300308R1 ABB board
DSPC174 3BSE005461R1 ABB Analog input module
DSSB140 48980001-P ABB power module
PFSK160A 3BSE009514R1 ABB processor board
PFSK162 3BSE015088R1 ABB module
PFSK164 3BSE021180R1 ABB Analog I/O Modules
PFSK130 3BSE002616R1 ABB module
IC693MDL644 GE Series 90-30 DC Voltage Input Module
IC693MDL645CA GE Programmable Logic Controllers
IC693MDL645 GE Series 90-30 module
IC693MDL645LT GE Programmable Logic Controllers
IC693MDL646 GE Series 90-30 Discrete Input module
IC693MDL646LT GE 40 Volts DC rated PLC
IC693MDL646CA GE Series 90-30, 24 VDC Positive / Negative Logic discrete input module
IC693MDL648 GE 40 Volts DC rated PLC
IC693MDL654CA GE 5/12 volt DC (TTL) Positive/Negative Logic Input module
IC693MDL653 GE Series 90-30, 24 VDC Positive / Negative Logic discrete input module
IC693MDL654 GE 5/12 volt DC (TTL) Positive/Negative Logic Input module
IC693MDL654LT GE Series 90-30 Discrete Input module
IC693MDL655CA GE Series 90-30 Discrete Input module
IC693MDL655 GE Series 90-30 Discrete Input module
IC693MDL655LT GE Series 90-30 Discrete Input module
IC693MDL660 GE Series 90-30, 24 VDC Positive / Negative Logic discrete input module
IC693MDL740 GE Series 90-30 module
IC693MDL734LT GE 12/24 positive logic DC output module
IC693MDL740CA GE OUTPUT MODULE
IC693MDL741 GE 12/24 positive logic DC output module
IC693MDL740LT GE digital I/O module
IC693MDL741CA GE 12/24 positive logic DC output module
IC693MDL741LT GE digital I/O module
IC693MDL742 GE Protection (ESCP) Output module
IC693MDL748 GE digital I/O module
IC693MDL742LT GE Series 90-30, 12/24 VDC Positive logic output module
IC693CPU351 GE Series 90-30 component
IC693MDL750 GE digital I/O module
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