Product Overview
The GE IS200VCRCH1B is a Contact Input/Relay Output Board from the Mark VI series, engineered for gas turbine control systems. This I/O board accepts 48 dry contact voltage inputs and manages 24 relay outputs through four terminal boards and an accompanying daughterboard. As a double-width VCCC module, it fits into the VME I/O rack, providing robust signal processing and relay control for critical turbine monitoring.
Designed for both TMR (Triple Modular Redundant) and Simplex applications, the IS200VCRCH1B ensures high reliability in demanding industrial environments. It is referenced in GEH-6721L and comes as new surplus in factory packaging, ready for immediate deployment.
Technical Specifications
| Parameter |
Value |
| Part Number |
IS200VCRCH1B |
| Manufacturer |
General Electric (GE) |
| Series |
Mark VI |
| Number of Channels |
48 Dry Contact Voltage Input Channels |
| Product Type |
I/O Board |
| Input Isolation |
1500 V |
| Availability |
In Stock |
| Country of Origin |
USA |
| Application Types |
TMR, Simplex |
| Mark VIe Compatible |
No |
| Referenced In |
GEH-6721L |
| Group / Variation / Revision |
H / 1 / B |
The IS200VCRCH1B provides 1500 V input isolation, protecting the control system from electrical noise and surges. With 48 input channels, it supports high-density monitoring of turbine variables, while the 1 ms SOE (Sequence of Events) recording captures fast transients with precision.
Operational Highlights
The contact inputs are powered by a floating 125 V dc supply (100–145 V dc) and are sampled at frame rate for control functions and at 1 ms for SOE reporting. Each input includes a 4 ms filter to suppress noise and contact bounce, and the ac voltage rejection at 50/60 Hz is 60 VRMS with 125 V dc excitation. This ensures accurate signal acquisition even in electrically noisy environments.
For TMR configurations, the IS200VCRCH1B supports voting via the VCMI board, enhancing fault tolerance. The relay outputs include failsafe features: if a cable is unplugged or communication is lost, the relays de-energize, preventing unsafe conditions.
Installation Guidance
To install the IS200VCRCH1B:
- Power off the VME I/O processor rack.
- Slide the board into the rack, ensuring edge connectors seat properly, and push the top and bottom levers inward.
- Tighten the captive screws on the front panel.
- Power on the rack and verify front-panel diagnostic lights.
Proper installation ensures reliable operation and minimizes downtime.
Applications
This board is ideal for gas turbine control systems, particularly in power generation and industrial processing. It excels in:
- Monitoring critical turbine variables with high-speed scanning.
- Driving solenoids and relays for protective actions.
- Sequence of Events recording for post-trip analysis.
Whether in TMR or Simplex architectures, the IS200VCRCH1B delivers dependable performance.
Selection Guide
When selecting the IS200VCRCH1B, verify compatibility with your existing Mark VI system and confirm the required relay board type (TRLY, DRLY, or SRLY). For expert assistance and to ensure authentic parts, choose PLC Source PRO as your trusted supplier.