ABB UFC921A101 (3BHE024855R0101 / 3BHE024856P201)

Model: UFC921A101; Order Number: 3BHE024855R0101 (Complete Unit), 3BHE024856P201 (Back Panel / PCB)

Type: ABB Gas Turbine Control Board (GTB), belonging to the core control module of the AC 800M / Freelance 800F system.

I. Basic Information

Brand: ABB (Swedish origin)

Series: Universal Field Controller (UFC), dedicated control card for gas turbines

Function positioning: Core board card for signal processing, logic operation, power regulation, and fault diagnosis of gas turbines/turbogenerators

II. Technical Parameters (Core)

1. Power Supply

Power: 24 V DC (18–30 V)

Power consumption: Approximately 15 W

2. Processing and Performance

Processor: 32-bit industrial-grade CPU

Control cycle: ≤ 10 ms

Accuracy: Analog input ±0.1% FS; Digital output 100% error tolerance

3. I/O and Interfaces

Analog input AI: 8 channels (4–20 mA / 0–10 V)

Analog output AO: 4 channels (4–20 mA)

Digital input DI: 16 channels (24 V DC)

Digital output DO: 8 channels (relays / transistors)

Communication: Ethernet (Modbus TCP), RS-485 (Modbus RTU), Profibus DP

4. Environment and Machinery

Operating temperature: -10 °C ~ +55 °C

Storage temperature: -40 °C ~ +70 °C

Protection level: IP20 (installed in the cabinet)

Size (width × height × depth): 150 × 100 × 70 mm

Weight: Approximately 1.2 kg

Certifications: CE, UL, RoHS, TÜV (gas turbine safety certification)

III. Core Functions

Gas turbine main control: PID closed-loop control of speed, temperature, pressure, fuel valve

High-speed signal acquisition: Real-time monitoring of key parameters such as vibration, flame, exhaust temperature

Self-diagnosis and protection in case of faults: Millisecond-level shutdown protection for overspeed, overtemperature, flameout, vibration overlimit, etc.

Redundancy support: Supports dual-machine hot standby, with no disturbance switching

Data interaction: Real-time communication with DCS, SCADA systems, supporting remote monitoring and debugging

IV. Typical Applications

Power generation field: Gas turbine control for natural gas / combined cycle power plants

Industrial drive: Large compressors, pump sets, turbine machinery control

Oil and gas industry: Turbine generator control for oil fields / natural gas gathering stations

Metallurgy / chemical industry: Turbine power system control for high-temperature, high-pressure processes

V. Model Description

UFC921A101: Product model (UFC = Universal Field Controller, 921 = Gas Turbine Control Series)

3BHE024855R0101: Complete machine order number (including motherboard + backplane + firmware)

3BHE024856P201: Backplane / PCB number (hardware component identification, used for maintenance and replacement)