Description
1. Product Title
GE IS200TDBSH2ACC – Mark VI Simplex Digital Contact Input Termination Board
2. Product Overview
The IS200TDBSH2ACC is a Simplex Digital Contact Input (TDBS) termination board designed for the General Electric Mark VI Speedtronic turbine control system. This module serves as the primary physical interface for discrete field wiring, such as limit switches, pressure switches, and auxiliary contacts from breakers. Its primary function is to receive digital (on/off) signals and route them to the VME-based I/O processors within the control rack.
Designed for standard reliability applications, the <span style=”color: blue;”>IS200TDBSH2ACC</span> provides organized termination for up to 24 contact inputs. It features onboard signal conditioning and high-voltage isolation to protect the sensitive control electronics from the electrical noise and transients typical of power plant environments. This board is essential for monitoring the non-critical auxiliary systems of gas and steam turbines, providing a ruggedized point of connection that ensures accurate status reporting to the HMI.
3. Technical Specifications
- Brand: General Electric (GE)
- Model: IS200TDBSH2ACC
- Warranty: One Year
- Condition: 100% New & Original
- Series: Mark VI Speedtronic
- Input Channels: 24 Discrete Contact Inputs
- Redundancy: Simplex (Single channel interface)
- Excitation Voltage: Typically supports 24 VDC
- Termination: Two-tier screw-type barrier terminal blocks
- Protection: MOV (Metal Oxide Varistor) surge suppression for each channel
- Operating Temp: -30°C to +65°C (-22°F to +149°F)
- Humidity: 5% to 95% non-condensing
4. Key Features & Benefits
- Cost-Effective Monitoring: The IS200TDBSH2ACC is optimized for Simplex configurations, providing a space-efficient and economical solution for monitoring secondary turbine systems where triple redundancy is not mandatory.
- Transient Protection: Each input channel is equipped with passive surge suppression hardware, preventing field-side voltage spikes from damaging the internal I/O processing modules.
- Organized Field Wiring: The board’s two-tier terminal block design allows for high-density wiring while maintaining clear access for testing and maintenance, reducing the risk of wiring errors.
- Native System Integration: Fully compatible with the GE Mark VI cabinet architecture, ensuring that the IS200TDBSH2ACC is automatically recognized and mapped within the GE Toolbox configuration environment.
5. Application Scenarios
- Auxiliary Equipment Monitoring: Used to track the status of lube oil pumps, cooling water fans, and enclosure heaters in a gas turbine package.
- Non-Critical Interlocks: Acts as the landing point for building security switches, fire panel feedback, and other “info-only” discrete signals that do not require TMR voting.
- Balance of Plant (BOP) Systems: Integrated into secondary control cabinets for managing water treatment or fuel handling facilities where Simplex reliability meets operational standards.
6. Frequently Asked Questions (FAQ)
- Q: What is the primary function of the IS200TDBSH2ACC ?
- A: It is a termination board that provides the physical connection for 24 digital contact inputs to the GE Mark VI control system.
- Q: How does the “H2ACC” suffix impact compatibility?
- A: This suffix denotes the specific hardware revision and grouping. It is critical to match this version exactly when replacing a board to ensure proper physical fit and electrical compatibility with your existing I/O cables.
- Q: Does this board support Sequence of Events (SOE) recording?
- A: Yes, when connected to a compatible Mark VI I/O pack, the IS200TDBSH2ACC can facilitate time-stamping of input changes for detailed fault analysis.
