ABB 3BHE020959R0127 KV C757 A127 Product Specification
1. Product Overview
The ABB 3BHE020959R0127 KV C757 A127 is a high-reliability gas turbine control module designed for ABB’s Symphony Plus and Advant OCS distributed control systems (DCS). As a core component in gas turbine control architectures, it executes key control functions including fuel regulation, speed control, and startup/shutdown logic, ensuring stable and efficient operation of gas turbine units. Widely applied in power generation (combined cycle plants), oil & gas (compression stations), and industrial energy systems, this module guarantees precise control and rapid response to load changes, supporting safe and economical energy production.
Compliant with international standards including IEC 61508 (SIL 3) and IEEE 1212, the KV C757 A127 features redundant processing units, fault-tolerant design, and high-temperature resistance. It maintains consistent performance in harsh environments with thermal cycles, electromagnetic interference, and vibration, meeting the stringent safety and reliability requirements of gas turbine control systems.
2. Technical Parameters & Specifications
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Category
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Details
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Product Model
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ABB 3BHE020959R0127 KV C757 A127
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Product Type
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Gas Turbine Control Module (SIL 3 Certified)
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Compatible Systems
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ABB Symphony Plus DCS, Advant OCS DCS
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Processing Capacity
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8 Control Loops; 1 ms Control Cycle
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Input/Output (I/O) Channels
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16 AI (4–20 mA); 8 AO (4–20 mA); 16 DI (24 V DC); 8 DO (24 V DC)
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Communication Interface
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ABB AC 800M Backplane; Modbus TCP/IP; Ethernet/IP
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Memory
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RAM: 1 GB; Flash: 4 GB (Program & Data Storage)
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Redundancy
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1+1 Hot Standby Redundancy
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Power Supply
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24 V DC ±15% (Redundant Input); Power Consumption: ≤30 W
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Environmental Ratings
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Operating Temp: -10°C–70°C; Humidity: 5%–95% (Non-Condensing); Vibration: ≤2.5 g
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Certifications
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IEC 61508 (SIL 3); IEEE 1212; UL 508; CE; ATEX Zone 2
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3. Key Features
3.1 SIL 3 Certified Safety Control
Certified for SIL 3 operation, the module integrates triple-modular redundancy (TMR) in critical circuits and 1+1 hot standby redundancy. Automatic failover (≤5 ms) ensures uninterrupted control, preventing hazardous conditions like gas turbine overspeed and fuel system malfunctions, which is vital for power plant safety.
3.2 Precise Gas Turbine Control
With a 1 ms control cycle and advanced PID algorithms optimized for gas turbines, the module achieves precise regulation of speed (±0.1% rated speed) and fuel flow. It supports load following and peak shaving functions, adapting to rapid grid load changes while maintaining turbine efficiency.
3.3 Integrated I/O & Flexible Expansion
Equipped with 48 integrated I/O channels (AI/AO/DI/DO), the module eliminates the need for external I/O modules, simplifying system architecture. It supports daisy-chain expansion of additional I/O modules via the AC 800M backplane, adapting to gas turbines of different capacities (5–50 MW).
3.4 Harsh Environment Resilience
The module operates reliably in a wide temperature range (-10°C–70°C) and features a rugged metal housing with IP40 protection. Enhanced EMC performance (compliant with IEC 61000-4) resists interference from turbine electrical systems and high-voltage equipment, ensuring stable operation in power plant environments.
4. Related ABB Products
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ABB 3BHE020960R0128 KV C758 A128: Advanced gas turbine control module with 16 control loops, suitable for large-scale 50–100 MW turbines.
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ABB AC 800M Controller: Core DCS controller, integrating KV C757 A127 to execute centralized power plant control strategies.
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ABB 3BSE038415R1 AI890 Analog Input Module: High-precision AI module for expanding temperature/pressure sensor inputs from turbine components.
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ABB 3BSE038416R1 AO890 Analog Output Module: High-reliability AO module for driving turbine fuel valves and actuators.
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ABB Symphony Plus HMI: Human-machine interface, enabling operators to monitor and configure the KV C757 A127 module in real time.
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