ABB UCD240A 3BHE022287R0101 CCM6080 Excitation Control Module

Product Description
UCD240A, order code 3BHE022287R0101 (UCD240A101), also named CCM6080, is an ABB excitation converter control board for UNITROL 6000 excitation system and ACS6000 medium voltage drive system. It acts as the core closed-loop control unit for generator excitation regulation. The module collects PT voltage and CT current signals, executes AVR, PSS, over-excitation / under-excitation and V/Hz limitation algorithms, and outputs firing pulses for thyristor rectifier bridge. It is powered by 24VDC backplane supply, equipped with digital input and relay output channels for status interlock and fault alarm. Rack slot mounted inside excitation cabinet, widely used as OEM spare part for power plant generator excitation retrofits and maintenance.

Key Functions

• Automatic Voltage Regulator (AVR) and PSS power system stabilizer control
• Over-excitation, under-excitation, V/Hz protection and limitation logic
• PT voltage, CT current and excitation current signal acquisition and processing
• Thyristor firing angle calculation and pulse output for excitation rectifier
• Digital input for remote/local control, breaker status and channel switching
• Relay digital output for operation, warning and fault alarm signals
• Communicate with main controller via backplane C-bus interface
• Built-in hardware self-diagnosis for circuit fault detection and LED status indication
• 24VDC power supply (18~30VDC wide range), industrial anti-interference design

Application Scenarios

• ABB UNITROL 6000 generator excitation control system
• ACS6000 medium voltage AC drive control system
• Thermal power, hydropower plant synchronous generator excitation cabinet
• Power station excitation system renovation, spare parts replacement and upgrade
• Industrial large synchronous motor excitation control projects

FAQ

Q: What is the alias name of UCD240A 3BHE022287R0101?
A: CCM6080, hardware version UCD240A101.

Q: Which system does this module belong to?
A: UNITROL 6000 excitation system and ACS6000 medium voltage drive platform.

Q: What is the main power supply of this board?
A: 24VDC backplane power supply, operating range 18 ~ 30 VDC.