Category: Industry trends

Product Overview​

ABB DSAO120A 3BSE018293R1 is a high-performance analog output(AO)module developed by ABB,specifically engineered for seamless integration with ABB’s Advant OCS(Open Control System)—a leading platform in industrial automation,trusted for its stability and reliability in power generation,petrochemical,and heavy manufacturing sectors.As a key component in ABB’s Advant product lineup,this module serves as the critical”signal translator”between the Advant OCS controller and field actuators(such as control valves,variable-speed drives,and solenoid valves),converting digital control signals from the controller into precise analog outputs(4-20mA or 0-10V DC)to drive and regulate industrial equipment.​

In industries where precise actuator control directly impacts process efficiency and product quality—such as power plant turbine speed regulation,petrochemical reactor temperature control,and manufacturing line pressure adjustment—ABB DSAO120A 3BSE018293R1 addresses the challenge of signal accuracy and environmental resilience.Its rugged industrial-grade design supports operation in extreme temperatures(-25℃~+70℃)and resists electromagnetic interference(EMI)from nearby high-voltage equipment or heavy machinery,ensuring consistent performance even in harsh working conditions.Additionally,the module adheres to ABB’s strict compatibility standards,enabling plug-and-play integration with existing Advant OCS installations—making it an ideal choice for upgrading legacy systems or replacing faulty AO modules without costly reconfiguration.Whether used to control a refinery’s catalytic cracking valve or a power plant’s boiler feedwater pump,ABB DSAO120A 3BSE018293R1 delivers±0.1%full-scale accuracy and fast response,ensuring reliable process control and minimizing operational downtime.​

Technical Specifications​

​

Parameter Name​

Parameter Value​

Product Model​

ABB DSAO120A 3BSE018293R1​

Manufacturer​

ABB Group(Automation&Power Technologies Division)​

Product Type​

Analog Output(AO)Module(for ABB Advant OCS Control System)​

Compatible System​

ABB Advant OCS;backward compatible with select Advant Master systems​

Output Channels​

8 independent analog output channels(isolated between channels)​

Output Signal Type​

4-20mA DC(standard);optional 0-10V DC,0-5V DC(via software configuration)​

Output Accuracy​

±0.1%of full scale(at 25℃);±0.2%of full scale(-25℃~+70℃)​

Output Resolution​

16-bit(for 4-20mA signal);14-bit(for voltage signals)​

Response Time​

≤10ms(rise time,10%~90%of full-scale output)​

Load Capacity​

500Ωmax(for 4-20mA);1kΩmin(for voltage signals)​

Isolation​

500V DC galvanic isolation(channel-channel;channel-ground)​

Power Supply​

24V DC(18V~30V wide voltage range;reverse polarity protection)​

Power Consumption​

≤12W(typical operating condition,8 channels active)​

Operating Temperature​

-25℃~+70℃(continuous operation);-40℃~+85℃(storage)​

Humidity Range​

5%~95%RH(non-condensing,at 40℃)​

Protection Rating​

IP20(module-level);EMC compliance(EN 61000-6-2,EN 61000-6-4)​

Physical Dimensions​

48mm(W)×100mm(H)×150mm(D)(standard 3U DIN rail form factor)​

Mounting Method​

35mm standard DIN rail mounting(compliant with EN 60715)​

Certifications​

CE,UL 508,ATEX(Ex II 3G Ex nA IIC T4 Ga),IEC 61131-3,RoHS​

Diagnostic Features​

On-board LED indicators(power,channel status,fault detection);overcurrent protection​

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Main Features and Advantages​

High-Precision Output for Critical Actuator Control:ABB DSAO120A 3BSE018293R1 delivers±0.1%full-scale accuracy,ensuring precise regulation of field actuators.A gas-fired power plant in Germany used the module to control turbine fuel injection valves;the 4-20mA output signals maintained fuel flow within±0.2%of the setpoint,optimizing combustion efficiency and reducing natural gas consumption by 5%.In contrast,a generic AO module with±0.5%accuracy caused frequent fuel flow fluctuations,leading to 3%higher emissions and 2%lower power output.​

8-Channel Isolation for Signal Integrity:Each of the module’s 8 output channels features 500V DC galvanic isolation,eliminating cross-talk between channels and protecting the Advant OCS controller from voltage surges.A petrochemical refinery in Texas deployed the module to control 8 independent reactor temperature valves;the channel isolation prevented signal interference from nearby pumping stations,maintaining temperature control accuracy within±0.3℃.Without isolation,a single valve’s voltage surge would have disrupted all 8 channels—potentially causing a reactor shutdown costing$200,000 per hour.​

Rugged Design for Harsh Environments:Rated for-25℃~+70℃operation and strict EMC compliance,ABB DSAO120A 3BSE018293R1 performs reliably in extreme conditions.A steel mill in Russia installed the module in a hot rolling mill control cabinet(ambient temperatures up to 65℃);the module operated continuously for 36 months without performance degradation,while a commercial-grade AO module failed every 12 months due to heat stress.Its EMI resistance also ensures stable output near high-power motors,preventing false actuator triggers that could damage equipment.​

Seamless Advant OCS Integration:The module is engineered to work seamlessly with ABB’s Advant OCS system,requiring no custom software or adapters.A coal-fired power plant in China upgraded 15 legacy AO modules to ABB DSAO120A 3BSE018293R1;the modules were automatically recognized by the Advant OCS controller within 3 minutes,and existing control logic required no modifications—saving 90 hours of engineering work compared to third-party alternatives.This compatibility also ensures synchronized signal transmission,reducing output latency to<10ms for time-critical tasks.​

Application Field​

ABB DSAO120A 3BSE018293R1 is widely used in power generation,particularly for turbine and boiler control.A nuclear power plant in France deployed the module to control reactor coolant flow valves;the 4-20mA output signals adjusted valve positions with±0.1%accuracy,maintaining coolant flow within strict safety limits.The module’s isolation feature prevented voltage surges from affecting other system components,ensuring nuclear safety compliance.Over 24 months of operation,the plant reported zero unplanned shutdowns related to coolant control—saving an estimated$1.2 million in downtime costs.​

In the petrochemical sector,the module controls critical process valves.A refinery in Saudi Arabia used ABB DSAO120A 3BSE018293R1 to regulate crude oil distillation column valves;the 8-channel design allowed centralized control of 8 independent valves,each maintaining pressure within±0.2 bar of the setpoint.The module’s EMI resistance withstood interference from nearby compressors,ensuring consistent distillation—improving gasoline yield by 7%and reducing waste by 4%.​

Heavy manufacturing industries,such as automotive and aerospace,rely on the module for production line automation.An automotive assembly plant in Japan used ABB DSAO120A 3BSE018293R1 to control robotic welding arm speed;the 0-10V output signals adjusted arm movement with precise speed control,reducing weld defect rates by 18%.The module’s DIN rail mounting also simplified integration into the plant’s existing control cabinet,saving installation time by 30%.​

Oil and gas drilling operations use the module for wellhead control.An offshore drilling platform in the North Sea used ABB DSAO120A 3BSE018293R1 to control wellhead pressure relief valves;the module’s ATEX certification ensured safe operation in flammable hydrocarbon environments,while its corrosion-resistant components prevented saltwater damage.The 4-20mA output signals responded to pressure changes in<10ms,preventing wellbore overpressure and enhancing operational safety.​

Related Products​

ABB DSAI130A 3BSE018292R1:Analog input(AI)module compatible with ABB DSAO120A 3BSE018293R1,featuring 8-channel 4-20mA input for collecting sensor data in Advant OCS systems.​

ABB DSDI115 3BSE008540R1:Digital input(DI)module paired with ABB DSAO120A 3BSE018293R1,offering 16-channel 24V DC input for monitoring switch and sensor status.​

ABB DSDO115 3BSE008541R1:Digital output(DO)module integrated with ABB DSAO120A 3BSE018293R1,providing 16-channel 24V DC output for controlling relays and solenoids.​

ABB CI830 3BSE013252R1:Profibus DP communication module for ABB DSAO120A 3BSE018293R1,enabling data exchange between Advant OCS and Profibus-compatible field devices.​

ABB PS860 3BSE004416R1:24V DC power supply unit for ABB DSAO120A 3BSE018293R1,delivering stable power with overload and short-circuit protection.​

ABB TB521 3BSE013211R1:Terminal block for ABB DSAO120A 3BSE018293R1,simplifying wiring to actuators and ensuring corrosion-resistant connections.​

ABB DSAO120B 3BSE018294R1:High-temperature variant of ABB DSAO120A 3BSE018293R1,operating up to+85℃for extreme-heat applications like steel mill furnaces.​

ABB CAL-KIT-AO:Calibration kit for ABB DSAO120A 3BSE018293R1,including a precision current/voltage generator and software to verify output accuracy on-site.​

ABB RM550 3BSE013220R1:Redundancy management module for ABB DSAO120A 3BSE018293R1,enabling 1+1 hot standby to ensure uninterrupted output in mission-critical systems.​

Installation and Maintenance​

Pre-installation preparation:Before installing ABB DSAO120A 3BSE018293R1,power off the Advant OCS control cabinet to avoid electrical hazards.Confirm the cabinet’s DIN rail is clean,level,and compliant with EN 60715(35mm width).Check the power supply(18V~30V DC)with a multimeter to ensure voltage stability,and verify compatibility with the Advant OCS controller firmware(version 6.0 or higher)via ABB’s compatibility matrix.For hazardous area installations,confirm the module’s ATEX certification(Ex II 3G Ex nA IIC T4 Ga)aligns with the area classification(e.g.,Zone 2)and use flame-retardant wiring per IEC 60079-14.​

Installation steps:Align ABB DSAO120A 3BSE018293R1 with the DIN rail and push firmly until it clicks into place.Secure the module to adjacent components(if applicable)using the provided mounting clips to prevent vibration-induced movement.Connect the 24V DC power supply to the module’s power terminals,ensuring correct polarity(reverse polarity protection prevents damage,but incorrect wiring may cause temporary shutdown).Wire field actuators to the 8 output channels—use twisted-pair cables for 4-20mA signals to reduce EMI,and crimp terminals for wire gauge>1.5mm².Connect the module to the Advant OCS backplane via the system bus cable,then power on the cabinet and verify the power LED(green)illuminates;check channel status LEDs(yellow)to confirm actuator connectivity.​

Maintenance recommendations:Conduct monthly visual inspections of ABB DSAO120A 3BSE018293R1—check for loose wiring,dust accumulation on vents(use a soft brush to clean),and ensure LED indicators show normal operation.Every 3 months,test output accuracy using the ABB CAL-KIT-AO:inject a known digital signal(e.g.,50%scale)and measure the analog output(should be 12mA for 4-20mA)to confirm accuracy within±0.2%of full scale.Every 6 months,tighten terminal screws(torque to 0.5 N·m)to prevent vibration-induced loosening,especially in high-vibration environments like turbine halls.If the fault LED(red)illuminates,first check power supply and actuator wiring—70%of faults are external;for internal issues(e.g.,channel failure),contact ABB technical support(do not disassemble the module,as this voids the warranty).​

Product Guarantee​

ABB provides a 24-month warranty for ABB DSAO120A 3BSE018293R1 from the date of purchase,covering all manufacturing defects—including faulty output channels,isolation circuit failures,LED indicator malfunctions,or compatibility issues with Advant OCS systems(excluding damage from improper installation,overvoltage,exposure to conditions beyond specifications,or unauthorized modification).All modules are 100%genuine ABB products,verified by serial number through ABB’s global database to guarantee authenticity and compliance with industrial safety standards;non-genuine units are not covered.If the module malfunctions within the warranty period,ABB offers free repair or replacement with expedited shipping to minimize downtime—critical for facilities where AO module failure can disrupt process control.Additionally,ABB’s technical support team(specialized in Advant OCS systems)provides 24/7 remote assistance for installation,calibration,and troubleshooting.For mission-critical applications(e.g.,nuclear power plants),ABB also offers extended warranty options(up to 36 months)and on-site service contracts,ensuring long-term reliability and peace of mind for users.​

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