Product Overview

• Part No: TRVC062105000, TRVC070938000, TRVC070938005.A
• Brand: ALSTOM

• Category: Turbine Actuator & Valve Position Control ModuleTRVC062105000, TRVC070938000 and TRVC070938005.A belong to ALSTOM TRVC series plug-in control printed circuit boards. These modules serve as closed-loop controllers for steam turbine control valves and actuators. They receive position setpoint commands from the main turbine controller, process LVDT position feedback signals, and output drive signals to regulate hydraulic actuators, maintaining precise valve opening under varying load conditions. TRVC070938005.A is the updated revision of TRVC070938000, while TRVC062105000 is the base hardware variant within the same product family. Designed as standard Eurocard format, these boards are critical maintenance spare parts for thermal power plant turbine governing systems.

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Core Features

• High-precision closed-loop position control for turbine control valves
• LVDT signal conditioning for actuator position feedback acquisition
• Fast response control algorithm to stabilize valve position during load fluctuation
• On-board fault diagnosis with front panel LED status indicators
• Standard Eurocard rack plug-in design supporting quick on-site replacement
• Built-in surge filtering and galvanic isolation against electromagnetic interference

• Passed EMC, vibration and wide-range thermal cycling reliability qualification

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Technical Specifications

• Operating Supply: 24 VDC
• Feedback Interface: LVDT position sensor compatible
• Operating Temperature: -10°C ~ +60°C
• Storage Temperature: -40°C ~ +85°C
• Form Factor: Standard Eurocard rack plug-in PCB

• Protection Class: IP20 when installed inside control cabinet

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Compatibility & Application

• Compatible with ALSTOM legacy steam turbine governing control platforms
• Widely deployed in thermal power plants, combined-cycle power stations and captive power facilities
• Applied for control valve positioning, actuator closed-loop regulation and turbine load control loops