Description
The GE IS200TBCIH1CCD is a Contact Input Termination Board (TBCI) designed for the Mark VI Speedtronic turbine control system. It acts as the physical interface point for discrete (dry contact) signals from the field, routing them to the control system for processing.
Product Parameters (Datasheet)
- Model Number: IS200TBCIH1CCD
- Board Type: TBCI (Contact Input Termination)
- System Series: Speedtronic Mark VI
- Input Channels: 24 Dry Contact Inputs
- Excitation Voltage: 24V DC or 125V DC (Depending on system configuration/jumpers)
- Redundancy: Supports Simplex, Dual, and TMR (Triple Modular Redundant) configurations
- Termination: Two 48-point terminal blocks for field wiring
- Connectors: Two 37-pin D-type connectors (JR1, JS1) for connection to the VME rack
- Revision: H1CCD (High-spec revision with specific component density)
Country of Origin
This termination board was engineered and manufactured by General Electric (GE) in the USA, specifically for high-integrity turbine control applications.
Application Fields
The IS200TBCIH1CCD is a core component in turbine protection and control:
- Gas & Steam Turbines: Monitoring limit switches, pressure switches, and emergency stop buttons.
- Generator Protection: Interfacing with lockout relays and breaker status contacts.
- Auxiliary Systems: Tracking the status of oil pumps, cooling fans, and fuel skids.
- Power Plant Automation: Providing high-speed discrete feedback for sequence-of-events (SOE) recording.
GE IS200TBCIH1CCD
GE IS200TBCIH1CCD
GE IS200TBCIH1CCD
Product Usage Instructions
- Mounting: Install the TBCI board onto the DIN rail in the turbine control cabinet. It is typically mounted in the termination area, separate from the main processor rack.
- Field Wiring: Connect the field contacts to the terminal blocks. Each input is a “dry contact,” meaning the board provides the excitation voltage and the field switch simply completes the circuit.
- Excitation Selection: Verify the onboard jumpers for the excitation voltage. Using 125V DC allows for longer cable runs and better wetting current to overcome contact oxidation.
- Cabling: Connect the 37-pin cables from the JR1/JS1/JT1 ports to the corresponding VCCC or VTCW cards in the Mark VI rack.
- Grounding: Ensure the board’s mounting bracket is making solid contact with the grounded cabinet rail to provide a path for surge suppression.
Product Technical Description
Technically, the IS200TBCIH1CCD is a passive-to-active signal conditioner. It contains optical isolation and surge suppression (typically MOVs and capacitors) for every channel to protect the sensitive VME control logic from field-induced transients or lightning strikes. The “H1C” revision is optimized for high-density environments and features specialized filtering to enable Sequence of Events (SOE) recording with 1-millisecond resolution. In a TMR system, the field signal is split three ways on the board and sent to the R, S, and T control processors simultaneously for voting.
Q&A (Common Questions)
Q: Can I use this board for 4-20 mA analog signals? A: No, the TBCI is strictly for discrete/digital contact inputs. For analog signals, you would require a TBAT or TBAI board.
Q: What is the purpose of the “CCD” at the end of the part number? A: This indicates the specific revision and assembly level. “CCD” versions often include updated surface-mount components or conformal coating for better environmental resistance compared to earlier “AAA” versions.
Q: Why are my inputs showing a “Fault” status in the Toolbox software? A: This is often caused by an open circuit in the field wiring or a failure of the excitation voltage supply (check the fuses on the power distribution module).
Q: Is the board hot-swappable? A: Yes, since it is a termination board, it can be replaced without powering down the entire controller, provided you are in a redundant configuration and follow proper isolation procedures.
Similar Model Recommendations
- GE IS200TBCIH1C (Base H1C version)
- GE IS200TRLYH1B (Relay Output Termination companion)
- GE IS200TBAIH1C (Analog Input Termination)
- GE IS200VCCCH1A (Contact Input Processor Card)
- GE IS200STCIH1A (Simplex version of the Contact Input board)
For technical support or to procure the GE IS200TBCIH1CCD, please contact our turbine control specialists.
