Product Overview

The ABB UFD203A101 3BHE019361R0101 is a high-performance,32-channel digital input/output(I/O)module specifically engineered for the AC 800PEC(Power Electronics Controller)platform—a specialized variant of ABB’s AC 800M controller family optimized for ultra-fast,deterministic control in power electronics and high-voltage applications.This module delivers microsecond-level response times,making it indispensable in demanding environments such as HVDC(High-Voltage Direct Current)transmission,STATCOM/SVC(Static Var Compensator)systems,FACTS(Flexible AC Transmission Systems),and large-scale grid-connected converters.The ABB UFD203A101 3BHE019361R0101 provides 16 isolated digital inputs and 16 isolated digital outputs,all featuring optical galvanic isolation and robust surge protection to ensure reliable operation in electrically noisy substations and converter halls.

Designed for integration into ABB’s real-time control architecture,the ABB UFD203A101 3BHE019361R0101 interfaces directly with the AC 800PEC backplane via a high-speed parallel bus,bypassing standard fieldbus latency to achieve true hard real-time performance—critical for protection,synchronization,and pulse-width modulation(PWM)sequencing.Each channel supports 24 VDC signals with configurable filtering and debouncing,allowing precise capture of breaker status,gate drive feedback,or interlock conditions.The module’s rugged construction includes conformal coating,wide operating temperature tolerance,and compliance with stringent EMC standards(IEC 61000-4),ensuring decades of service in harsh utility environments.As a cornerstone of ABB’s power electronics control ecosystem,the ABB UFD203A101 3BHE019361R0101 enables engineers to implement complex,time-critical logic with confidence and precision.

Technical Specifications

Parameter Name Parameter Value

Product Model UFD203A101 3BHE019361R0101

Manufacturer ABB Ltd.

Product Type High-Speed Digital Input/Output Module

Compatible Controller AC 800PEC(e.g.,PM866PEC,CM866)

Number of Channels 16 digital inputs+16 digital outputs

Input Voltage Range 15–30 VDC(nominal 24 VDC)

Output Type Sinking(NPN open-collector),24 VDC,max 100 mA per channel

Isolation Optical isolation,2.5 kV between field and backplane

Response Time<1µs(input to CPU);<2µs(CPU to output)

Filter Time(Configurable)0µs,10µs,100µs,1 ms

Operating Temperature–25°C to+70°C

Certifications IEC 61000-4(EMC),IEC 60255(relay standards),CE,cULus

Main Features and Advantages

Sub-Microsecond Determinism for Power Electronics:Unlike standard PLC I/O modules that operate on millisecond scan cycles,the UFD203A101 3BHE019361R0101 is built for real-time control at the microsecond level.This enables direct implementation of protection functions—such as overcurrent trip,valve short detection,or DC link fault isolation—without relying on external relays,significantly improving system responsiveness and safety.

Tight Integration with AC 800PEC Architecture:The UFD203A101 3BHE019361R0101 connects directly to the AC 800PEC’s high-speed internal bus,eliminating communication delays inherent in Ethernet-or fieldbus-based I/O.This allows the controller to read inputs and update outputs within a single control cycle(as fast as 10–50µs),essential for synchronized gate firing in multi-level converters or dynamic reactive power compensation.

Robust Design for Substation Environments:Featuring 2.5 kV optical isolation,transient voltage suppression,and conformal-coated PCBs,the UFD203A101 3BHE019361R0101 withstands the intense electromagnetic interference(EMI)generated by switching thyristors,IGBTs,and high-current busbars.Its extended temperature range(–25°C to+70°C)ensures reliable operation in both arctic HVDC converter stations and desert-based solar inverters.

Flexible Signal Handling:Inputs support configurable debounce filters to suppress contact bounce from mechanical breakers,while outputs can directly drive auxiliary relays,LED indicators,or gate driver enable lines.All channels are individually protected against short circuits and overloads,minimizing downtime due to field wiring faults.Configuration is performed via Control Builder M,with full diagnostic visibility in System 800xA for predictive maintenance.

Application Field

The UFD203A101 3BHE019361R0101 is primarily deployed in high-voltage power transmission and grid stabilization infrastructure.In HVDC converter stations,it monitors valve hall door interlocks,cooling system status,and thyristor firing feedback while issuing emergency block commands during fault conditions.In STATCOM and SVC installations,the module captures grid voltage zero-crossings and triggers thyristor switches with precise timing to inject or absorb reactive power—maintaining voltage stability during load fluctuations.

It is also critical in renewable energy integration,where large-scale wind or solar farms use ABB converters to interface with the grid;the UFD203A101 3BHE019361R0101 handles rapid disconnect sequences during anti-islanding events or grid code violations.Industrial applications include large motor drives(e.g.,in mining hoists or rolling mills)and electrolysis plants,where fast shutdown logic prevents equipment damage during DC faults.Even in rail traction power systems,this module supports substation protection and regenerative braking coordination.Wherever microsecond-level digital I/O reliability determines system safety and grid compliance,the UFD203A101 3BHE019361R0101 delivers unmatched performance.

Related Products

UFD201A101(3BHE019359R0101):16-channel fast digital input module,predecessor to UFD203A101 3BHE019361R0101

UFD202A101(3BHE019360R0101):16-channel fast digital output module,complementary to input-only variants

AC 800PEC CPU(e.g.,PM866PEC):Host controller required for UFD203A101 3BHE019361R0101 operation

UFH201A101:High-speed analog input module for AC 800PEC,used alongside UFD203A101 in mixed-signal control

TB521:Terminal base for UFD203A101 series,providing field wiring terminals and mechanical support

CI871:PROFINET/PROFIBUS communication module for AC 800PEC(non-real-time I/O gateway)

Installation and Maintenance

Pre-installation preparation:Before installing the UFD203A101 3BHE019361R0101,confirm compatibility with the AC 800PEC controller model and ensure the correct terminal base(TB521)is mounted in a properly grounded rack.Use shielded,twisted-pair cables for all field connections,with shields grounded at the controller end only.Verify that all connected devices(e.g.,contactors,sensors)provide clean 24 VDC dry contacts or solid-state outputs within the specified voltage range.Avoid routing signal cables parallel to high-power AC conductors to minimize inductive coupling.

Maintenance recommendations:The UFD203A101 3BHE019361R0101 should be inspected during scheduled outages for signs of overheating,corrosion,or loose terminal screws.Use Control Builder M to perform loop-back tests or force output states to validate channel functionality.Monitor diagnostic counters for input glitches or output overloads,which may indicate failing field devices.If a channel fails,verify wiring before replacing the module—many“faults”originate from external shorts or ground loops.Always de-energize the I/O power supply before removal to prevent backplane damage.Store spare UFD203A101 3BHE019361R0101 units in ESD-safe packaging in a climate-controlled environment.

Product Guarantee

Every UFD203A101 3BHE019361R0101 is sourced from ABB-authorized channels or meticulously refurbished to meet original factory test specifications.Each unit undergoes rigorous validation,including microsecond-level timing verification,isolation resistance testing,and full channel functional checks under simulated substation noise conditions.We provide a comprehensive 12-month warranty covering defects in materials and workmanship,backed by direct access to ABB-certified AC 800PEC application engineers for integration support and troubleshooting.Our commitment ensures that your real-time control infrastructure remains resilient,precise,and ready to protect critical power assets—because when grid stability is on the line,only proven,high-integrity I/O will do.

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