ALSTOM I/OBE2 12004-104-00 Turbine Control System Board

Brand: ALSTOM (Alstom Power, later merged into GE Energy)
Part Number: I/OBE2 12004-104-00
Product Type: Turbine Valve Control Servo Drive Card
Compatible System: Alstom / GE SPEEDTRONIC Mark Vle turbine control system, VCMI rack-mounted module

Core Function

Receive controller command signals and drive the electro-hydraulic servo valve; collect the valve position feedback from LVDT/RVDT to achieve closed-loop position control of the valve, which is used for turbine regulating valves and main steam valves control; it has built-in fault diagnosis, detecting open circuit / short circuit of the servo valve coil and abnormal feedback signals for alarm.

Key Technical Parameters

Table

Project | Parameter
Instruction Input | ±10VDC or 4-20mA
Feedback Input | LVDT/RVDT displacement sensor signal
Servo Output | High current output, drives servo valve coil (±300mA level)
Board Power Supply | Rack backplane power supply +15V, -15V, +5V logic power supply, cannot be powered on independently
Operating Temperature | 0 ~ +70℃, installed in control cabinet
Installation Method | VME/VCMI chassis slot installation, backplane bus communication
Diagnostic Function | Coil fault detection, feedback disconnection, valve position deviation alarm