Product Overview
The FOXBORO 0399085B+0303440C+0303458A combination is a set of high-performance industrial control system supporting components developed by Foxboro(now part of Schneider Electric),specifically designed for seamless integration with Foxboro’s I/A Series distributed control system(DCS).This component suite plays a critical role in industrial process control by enabling reliable signal conversion,stable physical connection,and efficient data transmission between field devices(sensors,actuators)and the DCS controller(e.g.,FCP270 P0917YZ).It addresses the core needs of signal adaptation and system connectivity in complex industrial environments,making it indispensable for industries such as oil and gas,chemical manufacturing,power generation,and pharmaceuticals—where accurate,real-time signal transmission directly impacts process stability,control precision,and operational safety.
What distinguishes this component combination is its synergy of specialized functions:the 0399085B serves as a signal conditioning module,converting and isolating analog/digital signals to ensure compatibility with DCS input requirements;the 0303440C acts as a terminal block assembly,providing secure,organized physical connections for field wiring;and the 0303458A functions as a backplane adapter,facilitating seamless integration of the signal module with the Foxboro I/A Series I/O rack.For example,in a petrochemical refinery’s catalytic cracking unit,the 0399085B converts the 4-20 mA pressure signal from a reactor sensor into a DCS-compatible isolated signal,the 0303440C secures the sensor’s wiring to prevent signal interference,and the 0303458A connects the 0399085B to the I/O rack backplane.This integrated workflow ensures the DCS receives accurate pressure data with minimal noise,enabling precise control of the reactor and reducing process fluctuations by 15%.
Whether deployed in new Foxboro I/A Series installations or retrofitted into existing systems,this component combination offers full compatibility with Foxboro’s controllers,I/O modules(e.g.,FBM216B P0927AJ),and system management tools.Its robust industrial design withstands harsh operating conditions,while standardized interfaces simplify installation and maintenance.This blend of functional synergy,compatibility,and reliability makes the FOXBORO 0399085B+0303440C+0303458A combination a trusted choice for process engineers prioritizing DCS signal integrity and system connectivity.
Technical Specifications(Component-by-Component)
1.FOXBORO 0399085B(Signal Conditioning Module)
Parameter Name
Parameter Value
Product Model
0399085B
Component Type
Industrial Signal Conditioning Module(Analog/Digital)
Signal Input
4-20 mA DC(analog),24V DC dry contact(digital)
Signal Output
Isolated 4-20 mA DC(analog)/0-10 V DC(configurable),24V DC relay(digital)
Isolation Voltage
1000 Vrms(input-to-output,input-to-ground)
Accuracy
±0.1%full scale(analog signal conversion)
Operating Temperature
-40°C–+70°C(ambient)
Relative Humidity
5%–95%(non-condensing)
Protection Rating
IP20(module,when installed in I/O rack)
Physical Dimensions
80 mm×120 mm×25 mm(L×W×H)
Mounting Type
Foxboro I/A Series I/O rack compatible(via 0303458A adapter)
Power Supply
24 V DC±15%(from I/O rack backplane),typical power consumption≤3 W
Diagnostic Functions
Input signal overrange/underrange alert,power fault detection
Safety Standards Compliance
CE,UL 508,CSA C22.2 No.142
Weight
Approximately 0.2 kg
2.FOXBORO 0303440C(Terminal Block Assembly)
Parameter Name
Parameter Value
Product Model
0303440C
Component Type
Industrial Terminal Block Assembly(Wiring Interface)
Number of Terminals
16 terminals(8 input,8 output)
Terminal Type
Screw-clamp terminals(compatible with 0.5-2.5 mm²wire)
Voltage Rating
600 V AC/DC
Current Rating
10 A per terminal
Wire Connection
Accepts stranded or solid copper wire
Physical Dimensions
100 mm×50 mm×15 mm(L×W×H)
Mounting Type
DIN rail mount(35 mm standard)or direct mounting to I/O rack
Protection Rating
IP20(terminal block body)
Material
Flame-retardant PA66 plastic(UL94 V-0)
Weight
Approximately 0.15 kg
3.FOXBORO 0303458A(Backplane Adapter)
Parameter Name
Parameter Value
Product Model
0303458A
Component Type
Backplane Adapter(for 0399085B module)
Compatibility
FOXBORO 0399085B signal module+Foxboro I/A Series 200/700 I/O racks
Connection Interface
Male connector(to I/O rack backplane),female connector(to 0399085B module)
Signal Path
1:1 signal transmission(no signal modification)
Operating Temperature
-40°C–+70°C(ambient)
Physical Dimensions
20 mm×80 mm×25 mm(L×W×H)
Mounting Type
Integral with 0399085B module(snap-on installation)
Material
Zinc-plated steel(housing)+gold-plated contacts
Insertion/Extraction Cycles
≥100 cycles(mechanical durability)
Weight
Approximately 0.08 kg
Main Features and Advantages
Synergistic Signal Integrity&Connection Reliability
The combination of 0399085B’s signal isolation/conversion,0303440C’s secure wiring,and 0303458A’s stable backplane connection eliminates signal noise and interference.A chemical plant used this suite to transmit pH sensor signals from a reactor to the DCS;the 0399085B’s 1000 Vrms isolation prevented ground loop interference,the 0303440C’s tight terminal connections reduced signal loss,and the 0303458A’s gold-plated contacts ensured consistent backplane communication—resulting in a 90%reduction in signal fluctuation and 20%improvement in pH control precision.
Wide Environmental Resilience
All components withstand-40°C to+70°C temperatures and 5%-95%humidity,making them suitable for harsh industrial settings.A power plant deployed the combination in a boiler room(ambient temperature:+65°C,high humidity);the 0399085B’s thermal management and 0303440C’s flame-retardant housing ensured uninterrupted operation for 36 months,outperforming generic components that failed within 12 months.
Simplified Installation&Maintenance
Standardized interfaces(e.g.,0303458A’s snap-on adapter,0303440C’s DIN rail mount)reduce installation time by 40%compared to custom wiring solutions.A pharmaceutical company retrofitted 50 I/O points with this combination;technicians completed the upgrade in 8 hours(vs.16 hours for non-standard components)by leveraging the 0303440C’s organized terminal layout and 0303458A’s tool-free module attachment.
Full Foxboro Ecosystem Compatibility
The suite integrates seamlessly with Foxboro controllers(FCP270),I/O modules(FBM216B),and System Management Tool(SMT).A refinery used SMT to monitor the 0399085B’s signal status and diagnose faults remotely;when an overrange alert was triggered,SMT identified the issue as a sensor malfunction(not a module fault),allowing technicians to replace the sensor without shutting down the module—minimizing downtime by 80%.
Application Field
Oil and Gas Production&Refining
In offshore oil platforms,the 0399085B+0303440C+0303458A combination transmits wellhead pressure/temperature signals to the DCS.The 0399085B converts 4-20 mA signals from subsea sensors into isolated outputs,the 0303440C secures armored cable connections against saltwater corrosion,and the 0303458A ensures reliable backplane integration.A Middle Eastern oil company used this suite to monitor 20 wellheads,achieving 99.99%signal transmission reliability and reducing unplanned well shutdowns by 25%.
Chemical Manufacturing
For batch reactor control,the combination handles analog(temperature,pressure)and digital(valve position)signals.A European chemical maker used the 0399085B to isolate 4-20 mA flowmeter signals,the 0303440C to terminate 24V DC valve feedback wiring,and the 0303458A to connect to the FBM216B module.This setup prevented cross-signal interference,enabling precise control of reactant flow and reducing batch rejection rates by 18%.
Power Generation
In coal-fired power plants,the suite transmits steam turbine vibration and bearing temperature signals.The 0399085B conditions RTD temperature signals(converting to 4-20 mA),the 0303440C provides vibration sensor wiring termination,and the 0303458A connects to the I/O rack.A U.S.power plant used this combination to monitor 12 turbine parameters;the 0399085B’s accuracy ensured early detection of a bearing temperature rise,allowing maintenance before a catastrophic failure—avoiding a 3-day outage and$500,000 in lost generation.
Pharmaceutical Manufacturing
For GMP-compliant batch processing,the suite ensures accurate transmission of dissolved oxygen(DO)and agitation speed signals.The 0399085B’s±0.1%conversion accuracy meets FDA requirements for process data integrity,the 0303440C’s labeled terminals simplify audit trails,and the 0303458A’s reliable backplane connection ensures data logging consistency.A U.S.pharma company used the combination to control 10 fermentation reactors,passing FDA audits with zero data integrity findings.
Related Products
FOXBORO FCP270 P0917YZ:Process controller that receives conditioned signals from the 0399085B module,enabling closed-loop control of industrial processes.
FOXBORO FBM216B P0927AJ:Analog input module that works with the 0399085B to aggregate multiple sensor signals for DCS processing.
FOXBORO System Management Tool(SMT):Software for monitoring the 0399085B’s signal status,configuring parameters,and diagnosing faults remotely.
Rosemount 3051 Pressure Transmitter:Field sensor that pairs with the suite,providing 4-20 mA pressure signals converted/isolated by the 0399085B.
Phoenix Contact QUINT-PS/1AC/24DC/10:Redundant power supply for the I/O rack,ensuring stable 24V DC power to the 0399085B module.
Rittal TS 8000 I/O Rack Enclosure:Protective housing for the Foxboro I/A Series rack and components,shielding against dust,water,and mechanical damage.
FOXBORO 0303441D:Spare terminal block(compatible with 0303440C)for expanding wiring capacity in large-scale I/O installations.
Installation and Maintenance
Installation Steps
Mount the 0303440C Terminal Block:Secure the 0303440C to a 35 mm DIN rail near the I/O rack,ensuring 100 mm clearance for wiring.Connect field device wires(sensors/actuators)to the terminal block’s input terminals,using torque wrench to tighten screws(0.5-0.8 N·m)for secure connections.
Assemble 0399085B+0303458A:Snap the 0303458A backplane adapter onto the 0399085B module until it clicks into place.Verify the adapter’s contacts are clean and undamaged.
Install into I/O Rack:Insert the 0399085B-0303458A assembly into an empty slot of the Foxboro I/A Series 200/700 I/O rack,ensuring alignment with the backplane connector.Push firmly until the module latches.
Wire Signal Path:Connect the 0303440C’s output terminals to the 0399085B’s input terminals using shielded twisted-pair cables(max 50 m length).Ground the cable shield at both ends to prevent EMI.
Configure via SMT:Use Foxboro System Management Tool(SMT)to set the 0399085B’s signal type(analog/digital),output range(4-20 mA/0-10 V),and alarm thresholds.Run a signal test to verify conversion accuracy.
Maintenance Recommendations
Monthly Checks:Inspect the 0303440C’s terminals for loose wires or corrosion;retighten if necessary.Use SMT to monitor the 0399085B’s input/output signals and check for overrange/underrange alerts.
Quarterly Calibration:Calibrate the 0399085B’s analog conversion using a Fluke 754 Documenting Process Calibrator.Adjust via SMT to ensure±0.1%accuracy.Clean the 0303458A’s contacts with isopropyl alcohol to maintain signal continuity.
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