Description

ABB UFC765AE102 High-Reliability Control & Communication Board (3BHE003604R0102)

Technical Specifications

• Product Model: UFC765AE102
• Full Part Number: 3BHE003604R0102
• Brand: ABB
• Warranty: One Year
• Input Voltage: 24 VDC (18–30 VDC backplane powered)
• Operating Temperature: -25°C to +70°C
• Storage Temperature: -40°C to +85°C
• Response Time: ≤ 50ms TMR fault voting and automatic failover
• Protection Class: IP20 rack-mounted enclosure, PCB conformal coating
• Accuracy Class: 0.2% for analog closed-loop regulation
• Output Frequency: Synchronized to 50/60Hz grid frequency
• Rated Current Range: Max 0.45A total power consumption
• Communication Interface: Dual Ethernet, Profibus DP, Internal Masterbus 300 backplane bus
• Supported Protocols: Profibus DP, Modbus TCP, ABB proprietary system bus protocol, HART 7 pass-through
• Overload Capacity: Per-channel short-circuit, reverse polarity, ESD and surge electronic protection
• Dimensions: 152 mm × 110 mm × 36 mm

Product Overview

The UFC765AE102 is a TMR triple modular redundant control and communication circuit board developed for ABB AC800M PAC, PCS6000 medium voltage converters and UNITROL generator excitation systems, certified to SIL 3 functional safety standards. It undertakes two core missions: executing high-speed closed-loop regulation for thyristor trigger pulses, generator AVR voltage control and electric arc furnace electrode positioning, and serving as a redundant communication gateway between the main controller, field I/O devices and upper SCADA monitoring platforms. This module addresses critical pain points including single-point hardware failure causing full system shutdown, delayed network fault localization, distorted control pulses under strong electromagnetic interference, and insufficient safety certification for power and metallurgy critical loops. Its triple-core voting architecture eliminates erroneous output from single component anomalies, while dual redundant communication ports prevent data link interruption during bus breakdowns. Power plant excitation system engineers, metallurgical EAF automation supervisors, DCS system integrators and medium-voltage drive maintenance teams gain significant operational reliability from its fault-tolerant design and coated PCB construction that resists dust, humidity and temperature fluctuations in harsh industrial control rooms.

3BHE003604R0102 UFC765AE102

Core Functional Features

1. TMR triple modular redundant processor architecture with 50ms automatic fault voting and failover, reaching SIL 3 safety integrity level for high-risk industrial loops
2. Conformal coated printed circuit board improves durability against condensation, dust and corrosive airborne particles in power and metallurgy plant environments
3. Redundant multi-port communication interfaces including Profibus DP and dual Ethernet to build fault-tolerant control network topology
4. Precise trigger pulse generation for PCS6000 medium voltage frequency converters and synchronous generator UNITROL excitation rectifier bridges