Description
GE IS200VCRCH1BBC – VCRC Control Board for Mark VI Turbine Racks
The GE IS200VCRCH1BBC is a VCRC-series control board designed for GE Mark VI turbine control systems. From my experience, this module sits in the VME-based controller rack and handles internal rack communications and signal management between the controller and I/O subsystems. You might notice the “H1B” revision and the trailing “C” in the model—on GE hardware that typically indicates a later hardware build with conformal coating, which many plants prefer for higher humidity or airborne contaminants.
Typical use cases include hot environments around gas or steam turbines where reliable backplane communication is mission-critical. Maintenance teams choose this board as a one-for-one replacement when the existing VCRC starts throwing intermittent rack communication faults or after scheduled life-cycle refresh.
Order Placement Process & Guarantees
- Warranty: 365 days
- Lead time: typically 1 week if in stock; no more than one month at the latest
- Payment: 50% advance payment; full payment prior to delivery
- Express options: FedEx, UPS, DHL
- Each unit is inspected, packed for industrial transit, and ESD-protected
Key Features
- Mark VI rack compatibility – Fits standard GE Mark VI VME control racks for gas/steam turbine applications.
- VCRC function – Manages internal rack communications and timing so the controller and I/O boards stay synchronized.
- Conformal-coated variant – The “C” suffix typically indicates coating for improved resistance to moisture and pollutants.
- Field-proven reliability – In many cases these boards run for years without drift; most replacements are due to age or cabinet heat stress.
- Service-friendly – Front faceplate with captive screws; slides into the rack guides for quick swap during planned outages.
- Status indication – Typically provides front-panel LEDs for quick at-a-glance rack health checks.
Technical Specifications
| Brand / Model | GE IS200VCRCH1BBC (VCRC series) |
| HS Code | 8538.90 (Parts suitable for use with industrial electrical apparatus) |
| Power Requirements | Supplied via VME/Eurocard backplane, typically 5 VDC rack power |
| Dimensions & Weight | 6U Eurocard form factor (approx. 233 × 160 mm); weight ~0.4–0.5 kg |
| Operating Temperature | 0 to +60°C cabinet ambient, non‑condensing (typical Mark VI rack conditions) |
| Signal I/O Types | Backplane-level digital/serial signaling; no direct field terminations on the board |
| Communication Interfaces | VMEbus backplane interface; proprietary rack communications within Mark VI system |
| Installation Method | Slides into the Mark VI rack guides; secure with front faceplate screws; ESD-safe handling required |
Related or Supporting Products
- IS200VCRCH1BBA / IS200VCRCH1BBB / IS200VCRCH1BBD – Closely related VCRC board revisions; differences are usually hardware artwork or coating changes.
- IS200VPROH1B (VPRO) – Protection interface board used alongside core Mark VI controls.
- IS200VTURH1B (VTUR) – Turbine control processing board; pairs with VCRC in the same rack in many systems.
- Terminal boards (e.g., IS200TBCIH1B) – Field I/O termination; while VCRC doesn’t wire to field directly, these boards handle the I/O wiring.
- Cabling sets for Mark VI racks – Backplane and front-panel ribbon/connector sets to streamline board replacement.
Installation & Maintenance
One thing I appreciate is how straightforward the swap can be if the cabinet is prepared. Keep the cabinet within spec temperature and ensure steady airflow across the cards. In most cases, technicians complete the change during a short outage window.
- Cabinet & environment: Use a standard Mark VI enclosure with adequate ventilation; keep ambient below 55–60°C and avoid condensation.
- Wiring: No field wires land on the VCRC; verify backplane seating and adjacent card connectors before power-up.
- Safety: ESD protection (wrist strap, antistatic mat); power down and lock out before removal/installation—this board is not hot-swappable.
- Commissioning: After install, run system diagnostics in ToolboxST and verify rack communications and LED states.
- Routine care: Keep filters/fans clean, inspect for dust on card edges, and check rack connectors during annual outages. Firmware handling, if applicable, should follow site change-control procedures.
Feedback from a maintenance lead at a combined-cycle plant: “Swapping the VCRC brought our rack comms back to green immediately. We kept a conformal-coated spare this time—it seems to hold up better in our coastal environment.”
Quality & Certifications
- Manufacturing quality: GE production under ISO 9001 quality systems (typical for this product family)
- CE / UL: Mark VI systems are commonly CE-marked and operated within UL-listed panels; board-level marking may vary by revision
- RoHS: Legacy boards may be non-RoHS; coated variants are often specified for harsh environments—confirm per lot/revision
- Warranty: 365-day warranty from us on this module
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