Description
X-FAN1003 993201013 Germany HIMA
X-FAN1003 993201013 Germany HIMA
Module Clips Drive controller servo motor
Contact: Mr. Lai
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What are I/O points?
When discussing control systems, I/O points are the most commonly heard term. It refers to the input/output point, where I represents Input, indicating input, and O represents OUTPUT, indicating output. Input/output refers to the measurement parameters that enter the control system from the instrument, and output refers to the parameters that output from the control system to the actuator. Each parameter is called a point. The size of a control system is sometimes determined by the maximum number of I/O points it can control.
What are analog quantities and switching quantities? X-FAN1003 993201013 Germany HIMA
Another common term in control systems is analog quantity and switching quantity. Regardless of input or output, a parameter is either an analog quantity or a switching quantity. Analog quantity refers to a continuous numerical value that varies within a certain range in the control system, such as temperature, from 0-100 degrees, pressure from 0-10MPA, liquid level from 1-5 meters, electric valve opening from 0-100%, etc. These quantities are all analog quantities. The switch quantity refers to the physical quantity that has only two states, such as the on and off states of the switch, the closed and open states of the relay, and the on and off states of the solenoid valve.
For control systems, since the CPU is binary and each data has two states of “0” and “1”, the switch value can be represented by only one bit inside the CPU, for example, “0” represents on and “1” represents off. Analog quantity, on the other hand, usually requires 8 to 16 bits to represent an analog quantity based on accuracy. The most common analog quantity is 12 bits, with an accuracy of 2-12, and the highest accuracy is about 2.5 parts per ten thousand. Of course, in actual control systems, the accuracy of analog signals is also limited by the accuracy of analog/digital converters and instruments, and it is usually impossible to achieve such a high level.
Data collection refers to the automatic collection of non electrical or electrical signals from analog and digital units under test, such as sensors and other devices, and sending them to the upper computer for analysis and processing. The data collection system is a flexible and user- X-FAN1003 993201013 Germany HIMA defined measurement system that combines measurement software and hardware products based on computers or other specialized testing platforms. Data acquisition card, which is a computer expansion card that implements data acquisition functions, can be connected to a personal computer through buses such as USB, PXI, PCI, PCI Express, Firewire (IEEE1394), PCMCIA, ISA, Compact Flash, 485, 232, Ethernet, and various wireless networks.
In order to meet the needs of IBM-PC and its compatible computers for data acquisition and control, many domestic and foreign manufacturers have produced various data acquisition boards (or I/O boards). These types of cards are designed and produced in accordance with the bus technology standards of IBM-PC machines. Users can quickly and conveniently form a data acquisition and processing system by inserting these cards into the corresponding I/O expansion slots on the IBM-PC machine motherboard, greatly saving hardware development time and investment, and fully utilizing the software and hardware resources of IBM-PC machines, It can also enable users to focus on researching theories and methods in data collection and processing, conducting system design, and programming.
There are many types of board cards based on PC bus, and there are also many classification methods. According to the different types of signal processing on the board, it can be divided into analog input board (A/D card), analog output board (D/A card), switch input board, switch output board, pulse input board, multifunctional board, etc. The multifunctional board can integrate multiple functions, such as the digital input/output board integrating analog input and digital input/output on the same card. According to the different buses, it can be divided into PXI/CPCI boards and PCI boards.
In industrial control, some control objects are input and output of switching values, specifically requiring the use of digital I/O boards. Digital I/O boards are used in devices that control switch inputs and outputs, and most devices cannot do without the control of input and output quantities.
The main technical indicators of the digital I/O board are as follows:
1. Isolation parameters:
Some boards have isolation measures, while others do not. Generally, isolation measures are required to increase anti-interference ability. If there are isolation measures, attention should be paid to the size of the isolation voltage. Isolation voltage is an important parameter. If the isolation voltage is not selected correctly, it can damage the isolation circuit, and sometimes even the entire board.
2. Input voltage range:
At the input end of the board, an input voltage should be applied to each input signal. If the input voltage is too low, the computer will not respond. If the input voltage is too high, it will damage the board. When using it, attention should be paid to the selection of input voltage.
3. Input response time and output establishment time
From the nonlinearity of semiconductors, it can be seen that when the input voltage is applied to the input terminal, the circuit does not immediately respond and usually needs to be demonstrated for a period of time. Although this delay time is very short (a few microseconds to tens of microseconds) and cannot be felt by people, it must be considered when writing programs, especially when the input terminal is a high-speed switch.
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
