IS200VCRCH1B Mark VI Discrete I/O Board

The GE IS200VCRCH1B is a Discrete Input/Output Board for the GE Speedtronic Mark VI turbine control system, purpose-built to handle large volumes of contact input and relay output signals. It is a core component for safety interlock and auxiliary equipment control in gas and steam turbine applications. As a single-slot alternative to the VCCC board, this module delivers the same functionality while eliminating the daughterboard structure, significantly conserving VME rack space. The front panel integrates cable connectors (J33/J44) and LED status indicators for convenient field wiring and fault diagnosis. The board supports both TMR (Triple Modular Redundant) and simplex system configurations, enabling redundant monitoring of critical protection parameters and control functions.