SPECIFICATIONS
Part No.: IS200VCRCH1BBA
Manufacturer: General Electric
Country of Manufacture: United States of America (USA)
Number of channels: 78
Input isolation: Optical isolation to 1500 V on all inputs
Input filter: Hardware filter, 4 ms
Temperature: 0 to 60oC (32 to 140 oF)
Product Type: Discrete Input/Output Board
Availability: In Stock
Series: Mark VI
Functional Description
IS200VCRCH1BBA is a Discrete Input/Output Board developed by GE. It is a part of Mark VI control system. The VCRC is a compact alternative to the VCCC (Versatile Control and Communication Card), offering similar functionality while providing convenience and flexibility in installation. The VCRC is designed as a single-slot version of the VCCC, ensuring compatibility and seamless integration within the control system architecture. While maintaining the same functionality as the VCCC, the VCRC offers a more space-efficient solution for applications where rack space is limited.
Front-Panel Connectivity
- Unlike the VCCC, which typically requires rear-panel connections, the VCRC features front-panel connectors for ease of access and convenient cable routing.
- Contact input cables plug directly into the front of the board, simplifying installation and maintenance procedures.
Discrete Input/Output Functionality
- The VCRC, like its counterpart VCCC, is capable of handling discrete inputs and controlling relay outputs.
- It accepts up to 48 discrete inputs and controls 24 relay outputs, providing robust control capabilities for various applications.
Terminal Board Compatibility
- Designed to work seamlessly with terminal boards such as TBCI (Terminal Board Contact Input) and TRLY (Terminal Board Relay Output), the VCRC ensures compatibility with existing infrastructure.
- It utilizes the standard J3/J4 plugs for cable connections to terminal boards, facilitating easy integration into the control system setup.
Space-Efficient Design
- The VCRC's narrower, single-slot form factor optimizes space utilization within the VME I/O rack, making it suitable for installations where rack space is at a premium.
- Despite its compact size, the VCRC delivers reliable performance and versatility in controlling and monitoring discrete signals.
Contact Inputs
- Wiring and Terminal Boards: The first 24 dry contact inputs are connected to a dedicated contact input terminal board, while additional inputs (25-48) require a second terminal board. These terminal boards facilitate the connection of contact input cables to the VME rack housing the VCCC processor board, ensuring efficient signal transmission.
- Power Supply: The dry-contact inputs receive power from either a floating 125 V dc supply (TBCIH1) or a floating 24 V dc supply (TBCIH2), providing flexibility based on system requirements. The voltage range for TBCIH1 is 100-145 V dc, while TBCIH2 operates within 18.5-32 V dc, accommodating different voltage levels as per specifications.
- Signal Processing and Filtering: High-speed scanning and recording capabilities enable monitoring of critical turbine variables at a rapid 1 ms rate, ensuring real-time data acquisition and analysis. The SOE (Sequence of Events) recorder captures all contact openings and closures with a remarkable time resolution of 1 ms, providing detailed event logging for diagnostic purposes. Contact chatter and pulse widths as low as 6 ms are accurately reported, allowing for precise identification of transient signal variations. Each input is equipped with filters designed to reduce high-frequency noise and suppress surge, ensuring signal integrity and reliability. A 4 ms filter effectively filters out noise and contact bounce, enhancing the accuracy of input readings and minimizing signal interference. The system boasts impressive AC voltage rejection capabilities, with a rejection rate of 60 V rms at 50/60 Hz when operating with 125 V dc excitation, ensuring immunity to external interference.
The WOC team is always available to help you with your Mark VI requirements. For more information, please contact WOC.
Frequently Asked Questions
What is IS200VCRCH1BBA?
It is a Discrete Input/Output Board developed by GE under the Mark VI series.
What do the LEDs on the I/O board front panel indicate?
The I/O board front panel features three LEDs providing status information.
What is the normal operating condition indicated by the LEDs?
In the normal operating state, the LED labeled RUN flashes green, indicating proper functionality.
How is a failure condition indicated?
A failure condition is represented by the LED labeled FAIL, which illuminates solid red when a malfunction occurs.
Is there an indication for diagnostic alarm conditions?
Yes, the third LED, labeled STATUS, remains off under normal operation. However, if a diagnostic alarm condition arises within the board, this LED emits a steady orange light, signaling the existence of a diagnostic issue.
