UFC921A101 3BHE024855R0101

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UFC921A101 3BHE024855R0101 I/O Interface Module--KIMI

Part number：UFC921A101 3BHE024855R0101
Product Origin：Sweden
HS CODE：8708299000
Warehouse: Spot
Warranty： 365 days
Quality: Original module
Condition： New
Shipping method: Courier delivery

Contact person: LI MING
Contact number: +86 18059884790
WeChat：18059884790
E-mail: plc66@qq.com

Product Description

ABB UFC921A101 3BHE024855R0101 I/O Interface Module (UNITROL 5000 Series)

High-Density Analog/Digital I/O for Generator Excitation & Power Electronics Control

1. Product Overview

The ABB UFC921A101 3BHE024855R0101 is a high-density analog/digital I/O interface module designed for ABB UNITROL 5000 generator excitation systems and AC 800PEC power electronics control platforms. It serves as a critical signal hub between the main controller, field sensors, actuators, and auxiliary devices, enabling precise acquisition of process variables and reliable output of control commands in power generation and heavy industrial applications. Equipped with 8 universal analog inputs, 4 analog outputs, 16 digital inputs, and 8 digital outputs, this module supports multiple signal types (0-10 V, 4-20 mA, 24 V DC) and features 2500 V AC galvanic isolation for each channel, ensuring immunity to electromagnetic interference (EMI) and protection against voltage surges in harsh industrial environments (-25°C to +70°C). With seamless integration with ABB’s Masterbus 300 communication protocol, hot-swap capability, and advanced diagnostic functions, it is ideal for mission-critical applications in thermal power plants, hydropower stations, nuclear power facilities, and renewable energy generation systems where accurate signal processing and uninterrupted operation are essential for generator stability and grid reliability.

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Product Number

3BHE024855R1101

ABB model name

UF C921 A101: INT-2 with firmware (ACS)

Table of Contents Description

UF C921 A101: INT-2 W/ firmware (ACS); MC interface board assembly

Detailed description

UF C921 A101: INT-2 with firmware (ACS)

Change product ID (old) :

3BHE024855R0101

3BHE024855R0102

2. Key Technical Specifications

• Brand & Model: ABB UFC921A101 3BHE024855R0101

• Product Type: I/O Interface Module (UNITROL 5000 / AC 800PEC Series)

• Core Function: Analog/Digital Signal Acquisition, Control Command Output, Masterbus 300 Communication

• Analog Input Channels: 8 Universal (0-10 V, 0-20 mA, 4-20 mA; 16-bit Resolution)

• Analog Output Channels: 4 (0-10 V, 0-20 mA, 4-20 mA; 14-bit Resolution)

• Digital Input Channels: 16 (24 V DC; Sink/Source Configurable)

• Digital Output Channels: 8 (24 V DC; 2 A per Channel; Short-Circuit Protected)

• Communication Protocol: Masterbus 300 (Up to 16 Nodes; 1 Mbps Data Rate)

• Isolation Rating: 2500 V AC (Channel-to-Channel; Channel-to-Ground)

• Power Supply: 24 V DC (Typical Current: 150 mA; Input Range: 19.2-30 V DC)

• Operating Temperature: -25°C to +70°C; Storage Temperature: -40°C to +85°C

• Protection Features: Overvoltage, Reverse Polarity, Short-Circuit Protection; EMC Compliant with IEC 61000-6-2/4

• Mounting: UNITROL 5000 Standard Rack (3U Height; 1 Slot Width)

• Physical Dimensions: 170 mm × 100 mm × 20 mm; Weight: 0.3 kg

• Certifications: CE, UL 508, IEC 61010-1, RoHS Compliant

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3. Core Features

• High-Density I/O Configuration: 8 AI, 4 AO, 16 DI, 8 DO channels for comprehensive signal processing.

• Universal Analog Inputs: Support multiple signal types without hardware reconfiguration.

• Enhanced Isolation: 2500 V AC isolation per channel eliminates ground loops and protects against EMI.

• Masterbus 300 Communication: Seamless integration with UNITROL 5000 and AC 800PEC systems.

• Hot-Swap Capability: Module replacement without system shutdown minimizes maintenance downtime.

• Advanced Diagnostics: Real-time monitoring of channel status, signal integrity, and fault alarms.

• Short-Circuit Protected Outputs: Prevents damage to the module and connected devices.

• Wide Temperature Range: Operates reliably in extreme industrial environments.

UFC921A101 3BHE024855R0101 -1.png

4. Typical Applications

• Thermal Power Plants: Generator excitation control, turbine speed monitoring, boiler feedwater regulation.

• Hydropower Stations: Governor control, generator voltage regulation, auxiliary system automation.

• Nuclear Power Facilities: Reactor control, safety system monitoring, power distribution management.

• Renewable Energy: Wind turbine generator control, solar inverter synchronization, energy storage system integration.

• Industrial Power Systems: Cogeneration plants, diesel generator sets, microgrid control.

5. Installation & Maintenance

Installation Steps

• Mounting: Install into UNITROL 5000/AC 800PEC standard rack; secure with locking clips for stable backplane connection.

• Wiring: Connect analog/digital signals to terminal blocks; ensure correct polarity and shielding for analog channels.

• Power Connection: Wire 24 V DC power supply; verify input voltage within 19.2-30 V DC range.

• Configuration: Set signal types, ranges, and communication parameters via ABB Control Builder software.

• Testing: Power on module; check LED status indicators; verify signal acquisition and output accuracy with calibration tools.

Maintenance Tips

• Daily: Inspect LED indicators (Power, Communication, Channel Fault); monitor system logs for signal errors.

• Weekly: Check terminal block tightness; clean module surface and ventilation slots to prevent dust accumulation.

• Monthly: Calibrate analog channels using standard signal sources; test digital output response time.

• Quarterly: Verify communication link integrity with Masterbus 300 diagnostic tools; inspect isolation resistance.

• Annual: Update module firmware; replace aging terminal blocks and wiring if necessary.

Technical Document | ABB UFC921A101 3BHE024855R0101 | I/O Interface Module | UNITROL 5000 Series

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