English Product Details

Product Name: ABB UAD142A01 3BHE012551R0001 Excitation Signal Interface Board

Model: UAD142A01

Order No: 3BHE012551R0001

Brand: ABB

Description:

ABB UAD142A01 with part number 3BHE012551R0001 is a dedicated signal transfer interface board designed for ABB UNITROL 5000 generator excitation system. UAD142A01 works as the core bridge between power unit and main controller. This ABB board collects analog and digital signals from excitation circuit, sends IGCT trigger pulses via fiber optic port and feeds back operating status. Equipped with standalone 32-bit MCU, UAD142A01 can block pulses immediately once faults detected to protect power components. Widely installed in power plant generator excitation cabinets. UAD142A01 3BHE012551R0001 is EOL industrial DCS spare part, available as new surplus and tested used units.

• Power Supply: 24V DC (18~32V DC), Power Consumption: 5.5W
• Analog Input: 8-channel differential isolated AI, 16-bit ADC, ±0.1%FS accuracy
• Digital Input:16-channel 24VDC opto-isolated DI, 8ms hardware debounce
• Digital Output:16-channel relay DO, contact rating 2A/230VAC
• Fiber Port: Dual ST fiber port, 10kV galvanic isolation
• Processor:32-bit independent MCU, scan cycle 500μs, hardware watchdog
• Operating Temp: -20℃ ~ +60℃
• Storage Temp: -40℃ ~ +85℃
• Protection Class: IP20 (cabinet mounting)
• Mounting Type: Eurocard slot mounting, hot-swap support
• Compatible System: ABB UNITROL 5000 excitation system
  

Key Features

High precision signal sampling for generator excitation monitoring

Dual fiber communication with high voltage isolation, strong EMC resistance

Independent hardware protection, fast pulse block under fault

lot modular design for UNITROL5000 excitation cabinet

Heavy-duty power plant automation spare part with stable performance

Applications

Thermal power plant, hydropower generator excitation control, UNITROL5000 cabinet maintenance & retrofit, DCS spare parts replacement for generator sets.