Description
Technical Specifications
- Product Model: UT129C‑1 (alias: UT129C1)
- Brand: Alstom
- Warranty: One Year
- Input Voltage: 24 V DC logic supply (18‑32 V DC wide‑range rack backplane power
- Operating Temperature: ‑20 °C ~ +60 °C; 5‑95 %RH non‑condensing
- Storage Temperature: ‑40 °C ~ +85 °C
- Response Time: Real‑time control loop cycle ≤250 µs
- Protection Class: IP20, VME‑format plug‑in PCB board, conformal coated
- Accuracy Class: Controller processing board, no analog measurement accuracy
- Output Frequency: Supports 50/60 Hz power‑system signal processing
- Rated Current Range: Board consumption approx. 420 mA
- Communication Interface: Multiple DB‑9 serial ports, VME backplane bus, front‑panel status LED indicators
- Supported Protocols: Alstom ALSPA NC proprietary backplane protocol; serial point‑to‑point links for excitation / turbine control peripherals
- Overload Capacity: On‑board surge, ESD and reverse‑polarity protection; channel fault isolation
- Dimensions: 263 mm × 58 mm × 28 mm; weight approx. 0.43 kg
Product Overview
The Alstom UT129C‑1 is a plug‑in CPU/control board belonging to Alstom ALSPA NC series control system, widely used in legacy Alstom generator excitation and turbine control cabinets. It executes core control algorithm processing, sequence‑logic execution, and real‑time data exchange with I/O boards via VME backplane and serial interfaces. It handles generator‑set closed‑loop regulation, protection‑logic judgment and peripheral device communication tasks. It addresses typical power‑plant pain‑points: high‑reliability real‑time control requirement for excitation system, multi‑peripheral device data interaction, and harsh cabinet‑environment adaption. Power‑generation‑system engineers, commissioning technicians and plant‑maintenance teams benefit from this unit. It is deployed for simplex and redundant control cabinet configurations. It applies for existing ALSPA NC system spare‑part replacement projects.
Application Scenarios
- Thermal‑power‑plant generator excitation control cabinets: Executes core control‑logic for Alstom legacy excitation systems, processes generator‑voltage‑regulation and protection‑related algorithms.
- Combined‑cycle unit auxiliary‑control racks: Used in old‑generation Alstom turbine‑control cabinets, implements unit sequence‑control and interlock‑logic functions.
- Hydro‑power‑station generator control systems: Adapts to hydro‑generator control cabinets; stable real‑time processing under frequent load‑change conditions.
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