ABB XZC826A102 3BHE036348R0102 Signal Conditioning Board Card

ABB XZC826A102 (Material Code: 3BHE036348R0102) Signal Conditioning Board Card
I. Product Brief Description
This ABB UNITROL series generator excitation control system is equipped with a signal acquisition / status indication backplane component that is compatible with the AC800M DCS automation system; it is an isolated multi-channel signal conversion, status indicator light driving, and circuit monitoring board. The hardware is a long strip embedded board structure, installed in the internal frame of the excitation control cabinet. It mainly completes the isolation and conversion of various analog and digital signals of the excitation system, self-check of the circuit, display of operating status points, and is the core supporting component board card for the static excitation cabinet of the generator set.

 Key Technical Parameters Table
Parameter Item Technical Indicator
Standard Power Supply DC24V (compatible range: 20.4~27.6VDC)
Overall Power Consumption ≤3.2W
Analog Signal Compatibility 4~20mA, 0~10V DC standard industrial process signals
Digital Channel Configuration 2 DI digital input channels, 2 DO digital output channels
Electrical Isolation Strength 2500V AC withstand isolation
Signal Conversion Accuracy ±0.1% of full scale (FS)
Signal Response Speed ≤5ms
Overall Dimensions 110mm × 80mm × 65mm
Net Weight of the Whole Machine Approximately 0.3kg
Operating Environment Temperature -20℃ ~ +60℃
Storage and Transportation Temperature -40℃ ~ +85℃
Environmental Humidity 5%~95% RH, no condensation
Protection Grade IP20 (used inside the cabinet)
Installation Form Rack-mounted embedded fixed / optional 35mm DIN rail installation
EMC Standard Compliant with IEC 61000 Industrial Electromagnetic Compatibility Specifications

Core Product Performance
Multi-channel Signal Isolation Conversion Adaptability
Isolating and amplifying conversion of analog signals such as excitation system terminal voltage, rotor current, power, and temperature, isolating strong electric interference and ground loop potential difference, eliminating interference-induced fluctuations in excitation regulation, ensuring stable generator voltage regulation accuracy.
Panel Status Indicator Light Driver Management
Board-mounted multiple sets of point position driver circuits (STATUS XABCDEFGHIJK status points), uniformly driving the power, operation, fault, excitation ready, grid connection allowed, etc. LED indicators on the front door of the cabinet, centrally summarizing the system operation alarm status.
Full-circuit Hardware Self-Diagnosis
Continuous inspection of power supply circuits, signal input and output channels, and internal chip conditions; channel disconnection, short circuit, power abnormality can all be detected, fault information uploaded to the excitation master control unit, facilitating fault location and troubleshooting.
Three-Defense Industrial Reinforcement of Circuit Board
The entire board PCB is sprayed with three-defense coating, capable of withstanding power plant dust, humidity, vibration, and strong electromagnetic interference, allowing for 7×24-hour continuous operation all year round.
Version Downward Compatibility and Interchangeability
The pin and installation dimensions of the same prefix series 3BHE036348R0101, R0102 hardware are completely consistent, allowing for direct replacement and upgrade without modifying the cabinet wiring.
Lightweight Compact Structure
Narrow-strip board design, suitable for the limited internal space of excitation control cabinets, saving cabinet installation volume.

Application Domains
Thermal power, hydropower, gas turbine generator sets ABB UNITROL 1000/6000 series static excitation control cabinets
Internal standard components for power plant plant power supply, synchronous condenser excitation regulation system signal monitoring and status display;
Metallurgical, chemical self-owned power generation set excitation systems maintenance spare parts replacement;
ABB AC800M/System 800xA process DCS system on-site signal isolation acquisition expansion;
Waste heat power generation, biomass power station small synchronous generator excitation matching control system.