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Description
Application Scenarios:
Consider a sophisticated water treatment facility where the precise measurement of pH levels,chlorine concentrations,and flow rates is paramount for ensuring public safety and regulatory compliance.Even a slight deviation in these parameters can lead to contaminated water or significant fines.This is where the ABB AI820 shines.Integrated into the System 800xA,the AI820 modules meticulously receive signals from numerous field sensors across the plant.With its 14-bit resolution,the AI820 provides exceptionally accurate readings,allowing operators to make informed decisions in real-time.Furthermore,its built-in diagnostic capabilities continuously monitor for wiring faults,such as open circuits,which could lead to erroneous readings.If a sensor connection is compromised,the AI820 instantly flags the issue,preventing misinterpretation of data and enabling immediate corrective action.The unwavering reliability of the AI820 ensures that the water treatment process operates safely and efficiently,safeguarding public health and maintaining environmental standards.
Parameters:
Product Model:AI820
Manufacturer:ABB
Product Category:Analog Input Module
Part Number:3BSE008544R1
Number of Channels:4 differential,bipolar inputs
Input Signal Types:Configurable for-20…+20mA,0…20mA,4…20mA,-10…+10V,0…10V,2…10V,-5…+5V,0…5V,1…5V DC
Resolution:14-bit plus sign
Isolation:Groupwise isolated from ground
Diagnostics:On-board LEDs(F,R,W),supervision for internal power supply,module/channel error
Compatibility:ABB Ability System 800xA,AC800M Controller,S800 I/O series
Installation Method:Plugs into compatible TU8xx Terminal Units
Operating Temperature:0 to+55°C(+32 to+131°F)
Dimensions(WxDxH):45 x 102(111 with connector)x 119 mm(1.77 x 4.01/4.37 x 4.7 in)
Weight:Approx.0.2 kg(0.44 lbs)
Technical Principles and Innovative Values:
High-Resolution Signal Acquisition:The AI820 leverages a 14-bit plus sign analog-to-digital converter,providing exceptional measurement precision.This high resolution ensures that even minute changes in process variables are accurately captured,enabling tighter control and optimized process performance.
Universal Input Versatility:Unlike modules limited to a single input type,the AI820 offers configurable channels supporting a wide range of current and voltage signals.This flexibility significantly reduces the number of spare parts needed and simplifies system design,making it adaptable to various sensor types without requiring different modules.
Proactive Diagnostics and Protection:The AI820 incorporates intelligent diagnostics that constantly monitor signal integrity and internal module health.It can detect wire breaks(open circuits)and signal range violations,providing early warning via dedicated LEDs and system alarms.Additionally,input shunt resistors are protected up to 30V DC,safeguarding the module from accidental overvoltage conditions.
Groupwise Isolation:The 4 channels on the AI820 are isolated as one group from the ModuleBus.This electrical isolation prevents ground loops and minimizes electrical noise interference,ensuring clean and reliable signal transmission from noisy field environments to the control system.
Application Cases and Industry Value:
In a large pulp and paper manufacturing plant,precise control of chemical additives and digester temperatures is crucial for product consistency and energy efficiency.The existing control system was upgraded with ABB System 800xA,utilizing AI820 modules for critical analog inputs.The superior accuracy of the AI820 allowed for tighter control of chemical dosing,reducing waste and improving paper quality.The module’s diagnostic capabilities also proved invaluable when an intermittent temperature reading was quickly traced to a faulty sensor cable,preventing a potential batch rework and saving significant production time and resources.
Another compelling case is from a specialized food and beverage facility,where consistent fermenter temperatures and pH levels directly impact product safety and taste.The AI820 modules were chosen for their reliability and precision in monitoring these sensitive parameters.The ability to hot-swap a module without interrupting the delicate fermentation process meant that routine maintenance or unexpected module replacement could occur without risking the integrity of an entire batch.This feature alone contributed to enhanced uptime and ensured product quality,significantly reducing operational risks and costs.
Related Product Combination Solutions:
ABB AC800M Controllers:The AI820 integrates seamlessly with various AC800M controller types(e.g.,PM851,PM861,PM866),sending its processed analog data for control logic execution.
ABB TU8xx Terminal Units:The AI820 requires a specific terminal unit(e.g.,TU810V1,TU812V1,TU814V1,TU830V1,TU833)for field wiring termination and connection to the ModuleBus.
ABB CI8xx Communication Interface Modules:These modules(e.g.,CI854,CI840)facilitate communication between the AC800M controller and the S800 I/O racks,which include the AI820.
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