Turbine control systems require rugged and reliable I/O interfaces. The GE IS200VCRCH1BBB delivers robust discrete signal handling for field devices. This board functions as a VCRC series I/O module for the Mark VIe platform. GE designed this unit specifically for gas and steam turbine applications.
Technical Specifications & Dimensions
This board supports both input and output functions for flexible configuration. The table below outlines its core technical parameters.
| Parameter | Specification |
|---|---|
| I/O Type | Discrete (mix of inputs and outputs) |
| Number of Channels | 24 total channels |
| Nominal Voltage | 24V DC |
| Input Voltage Range | 0 to 30V DC |
| Output Current | 0.5A per channel maximum |
| Logic Supply | 5V DC from backplane |
| Field Supply | 24V DC external |
| Isolation | 1500V RMS (field to logic) |
| Unit Weight | 0.52 kg (1.15 lbs) |
| Board Dimensions | 190 x 160 x 25 mm |
| Number of Components | 4 ICs + 18 resistors + 6 capacitors |
Construction and Interface Layout
This board features a flame-retardant epoxy laminate substrate with conformal coating. Such a design protects circuits from moisture and airborne contaminants. Furthermore, the GE IS200VCRCH1BBB provides two front-panel connectors for field wiring. You will find a 37-pin D-sub connector on this interface. The board also includes a 20-pin header for backplane communication. An LED array shows the real-time status for all I/O channels.
Energy Storage and Signal Processing
Unlike simple relay boards, this VCRC module uses solid-state switching for outputs. The board employs opto-isolators to separate field signals from logic circuits. Consequently, the GE IS200VCRCH1BBB offers excellent electrical noise rejection. Each input channel includes a small capacitor for contact debouncing. This capacitor stores minimal energy but effectively filters switch chatter. The board does not require battery backup for normal operation.
Installation and Mounting Requirements
Installing the GE IS200VCRCH1BBB takes only a few minutes of work. The board slides directly into a Mark VIe VME rack slot. It also locks securely with two injector/ejector handles. Always disconnect both 5V and 24V supplies before handling this board. The unit uses passive cooling through natural convection. This design eliminates any moving parts or fan maintenance. The board occupies a single VME slot in the chassis.
Integration with Turbine Control Systems
This I/O board works seamlessly with Mark VIe controllers. It interfaces with solenoid valves, limit switches, and relay contacts. Operators can configure each channel as an input or output through software. The GE IS200VCRCH1BBB also supports fast scan rates for safety-critical applications. Consequently, this model remains a standard choice for turbine I/O expansion. The unit delivers consistent performance across a -30°C to +65°C temperature range.
Details
| Weight | 0.1 kg |
|---|---|
| Dimensions | 25 × 108 × 127 mm |
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